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Kashirskikh, Veniamin, Valery Zavyalov e Irina Semykina. "On the Issue of Increasing Reliability of Electric Mining Machinery". E3S Web of Conferences 174 (2020): 03024. http://dx.doi.org/10.1051/e3sconf/202017403024.
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The paper considers conditions of mining machinery electric drives operation and analyzes the causes of insufficient reliability. To improve the reliability and efficiency of induction motors the authors propose the computer system designed for dynamic identification of electric motors to monitor their parameters and variables, which are estimated on operating equipment in real time. Operation of the system allows calculating unmeasurable quantities and is based on the mathematical model of the induction motor as well as mathematical methods of estimation and the information contained in the measured phase voltages and currents of the stator. For dynamic mode the mathematical model of the motor’s state and the measurement part were developed and certain results were obtained. Real-time information can be used for both control and management of electric motors, function testing, protection, forecasting as well as acceptance testing of electric motors in mining machinery electric drives to identify their individual data and quality control of the industrial processes in the manufacture or repair of motors.
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Gmyrek, Zbigniew. "Optimal Electric Motor Designs of Light Electric Vehicles: A Review". Energies 17, n. 14 (14 luglio 2024): 3462. http://dx.doi.org/10.3390/en17143462.
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This paper summarizes the results of numerous studies aimed at improving the operating characteristics of electric motors used in light electric vehicles (LEVs). This review focuses on four types of electric motors that can be installed in the drive wheel rims of LEVs. Due to the availability of new magnetic materials and the use of advanced techniques for optimizing the design of electric motors, new motor topologies have emerged. The latest generation motors have been shown to be more efficient, have higher torque density, and generate less torque ripple. This paper indicates and discusses current trends in the topology of electric motors designed for LEV drives. In this context, the effectiveness of the proposed design modifications in terms of selected motor operational characteristics was assessed. The proposed new topologies were compared with commercial solutions, also in terms of the possibility of improving their operational parameters.
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Jin, Chili. "Current Status and Prospects of Electric Motor Applications for Electric Vehicles". Highlights in Science, Engineering and Technology 37 (18 marzo 2023): 196–201. http://dx.doi.org/10.54097/hset.v37i.6074.
Testo completoAbstract (sommario):
Nowadays, with the global pursuit of zero emissions, the trend of automobile electrification is very rapid. The drive motor is the core component of electric vehicles, which has an important impact on the working life and performance of electric vehicles. Therefore, all major manufacturers are trying to find and develop better and more efficient motors. At present, the research on driving motor has become a hot issue in the field of electric vehicles, attracting many scholars to carry out a lot of research work. This paper analyzes four common driving motors in the market, discusses their structure, principle and performance, and lists their advantages and disadvantages for comparison. Then it describes the development status of various types of motors and their applications in electric vehicles, and introduces the prospects of electric vehicle motors and suggestions for improvement of switched reluctance motors.
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Lisov, Andrey A., Alexander G. Vozmilov, Nadezhda Yu Kuleva, Andrey I. Sogrin, Ramil A. Zakirov e Rafael Yu Ilimbetov. "Selection of a traction electric motor for arctic electric transport". Modern Transportation Systems and Technologies 9, n. 2 (30 giugno 2023): 44–56. http://dx.doi.org/10.17816/transsyst20239244-56.
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Aim: selection of a traction motor for electric freight transport operating in the Arctic.
Methods: To achieve this aim, the main characteristics of existing types of DC and AC electric motors were considered, as well as data on the use of one or another type of motor in modern electric vehicle.
Results: A comparative analysis of the most common motors has led to 2 main leaders - a permanent magnet synchronous motor (PMSM) and an induction motor (IM). Both types of motors are fully suitable for solving the aim. However, as it turned out later, PMSM is more often used for light vehicles, while IM in most cases is used for heavier vehicles.
Conclusion: As a result of the analysis, it was decided that for electric transport operating in the Arctic, the best option is to use an induction motor as a traction motor.
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Suechoey, Boonlert, Somsak Siriporananon, Pana Chupun, Churirat Boonkhun e Chai Chompooinwai. "Performance Analysis and Fault Classification in a Large Electric Motor Using Vibration Assessment Technique". International Journal of Intelligent Engineering and Systems 14, n. 1 (28 febbraio 2021): 124–33. http://dx.doi.org/10.22266/ijies2021.0228.13.
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This research paper presents an analysis of electric motors performance by the assessment of vibration characteristics caused by bearing faults, housing bearing looseness and rotor unbalance. In this study, an analysis of fault that occurred in electric motor has followed ISO 10816-3 Standard. Bring the used electric motors for testing and measuring the vibration of the electric motors by using the Spectrum Analysis & Field Balancing Analyzer model ADASH A440-VA4 Pro. The vibration results of 22kW, 55kW and 75kW motor imply the malfunction of bearing faults, housing bearing looseness, and rotor unbalance. The results obtained from the analysis will be used as references and guidelines for predictions of faults in the electric motors, including maintenance scheduling of electric motors.
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Dutta, Rukmi. "Maximising energy efficiency with electric motors". Open Access Government 39, n. 1 (10 luglio 2023): 554–55. http://dx.doi.org/10.56367/oag-039-10891.
Testo completoAbstract (sommario):
Maximising energy efficiency with electric motors Rukmi Dutta from the University of New South Wales discusses the mechanisms and efficiency potential of electric motor systems, looking at how electric motors work, efficiency and losses and improving overall system efficiency for electric motors. Increased industrial activities in developing economies like India, China, and many others will push the use of motors even further. Electrical motors are the powerhouse of the industrial world, she explains, discussing efficiently converting electrical energy into mechanical power. Many critical sectors use electrical motors, including industrial, commercial, residential, agricultural and transport. The worldwide growth of electrical motor-driven systems is predicted to double by 2040. Overall, UNSW Sydney’s Electrical Machines and Drive Systems research team is at the forefront and contributes to developing novel, highly efficient motors and drives suitable for many applications.
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Badarudin, R., D. Hariyanto, M. Ali e S. Meunmany. "Electric Machines Virtual Laboratory: Testing of DC Motor". Journal of Physics: Conference Series 2111, n. 1 (1 novembre 2021): 012041. http://dx.doi.org/10.1088/1742-6596/2111/1/012041.
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Abstract This article describes the realization of testing the characteristics of a DC motor on Simulink as a virtual laboratory. Testing of DC motors based on real conditions in a physical laboratory by combining two DC machines coupled to shafts including DC motors and DC generators. The types of DC motors tested include separately excited DC motors, shunt DC motors, and series DC motors. The implementation of the Simulink model adopts the wiring diagram in the real test. The test procedure is also adopted on the real test procedure. The data from the test results are made in DC motor characteristics graph. Virtual laboratory using Simulink can be used to realize DC motor testing, including test procedures, running no-load DC motors, increasing the load of DC motors with infinitely simulation features on Simulink. The results of the study show the characteristics of the experimental data for all types of DC motors tested according to the theory.
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Edwards, C. "More motor, less power [electric motors]". Engineering & Technology 7, n. 7 (2012): 86. http://dx.doi.org/10.1049/et.2012.0717.
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Fazdi, Mohamad Farid, e Po-Wen Hsueh. "Parameters Identification of a Permanent Magnet DC Motor: A Review". Electronics 12, n. 12 (6 giugno 2023): 2559. http://dx.doi.org/10.3390/electronics12122559.
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Since permanent magnet direct current (DC) motors are mainly used in various industrial automation applications, the demand for electric motors is increasing rapidly. However, in the mass production of electric motors, often, only random inspections are used to check the specifications and performance of electric motors. For manufacturing or engineering application staff to have a more thorough understanding of the characteristics of the motor, it is necessary to conduct a full or quick inspection during the production process to ensure the quality of the electric motor. Based on this, this literature review reveals several methods and algorithms often used to estimate DC motor parameters, given the importance of knowing the parameters of the DC motor and the lack of research on estimating the parameters of the DC motor.
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Alibeik, Maryam, e Euzeli C. dos dos Santos. "High-Torque Electric Machines: State of The Art and Comparison". Machines 10, n. 8 (30 luglio 2022): 636. http://dx.doi.org/10.3390/machines10080636.
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The state of the art of high-torque electric motors has been reviewed in this paper. This paper presents a literature review of high-torque density electric machines based on their airgap classifications, which brings a unique consideration to new design ideas to increase torque density. Electric machines are classified into three main groups based on their airgap configuration, i.e., (1) machines with a constant airgap, (2) machines with a variable airgap, and (3) machines with an eccentric airgap. This paper also presents the modeling of a high-torque airgap-less electric motor based on the concept of eccentric airgap. The torque density of this motor has been compared to motors available in the literature review. Among electrical motors with no permanent-magnet, airgap-less electric motors take the lead in terms of torque density, which is almost five times greater than the next motor, “in-wheel for electric vehicle”.
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Kurayev, A. A., e V. V. Matveyenka. "Unimodal electric motor-generator". Doklady BGUIR 18, n. 7 (25 novembre 2020): 96–99. http://dx.doi.org/10.35596/1729-7648-2020-18-7-96-99.
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The commissioning of nuclear power plants in Belarus sets out wide tasking for the efficient usage of electrical energy in various electrical systems, instruments and devices. Specifically, it concerns the stationary and special-purpose electric motors. At present, they use bipolar motors with a collector – the switch of the motor armature windings during its rotation. However, there is a completely different type of motors that does not require a collector – the unipolar electric motor-generator. Some of its properties allow it to be used where the commutator motor is unsuitable, for example, in explosive and fire hazardous environments (sparking on the collector is unacceptable), in precision devices where extreme smoothness and vibration lack are required, etc. Physico-mathematical foundations of the unipolar motor-generator (moving media electrodynamics, Lorentz force, unipolar induction, magnetohydrodynamics) are described in a number of monographs and textbooks, for example, in [1–4]. The purpose of this article is to pay attention to the technical feasibility of the unipolar motor-generator in a design with separated conductors in the rotor drum.
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Mayr, Andreas, Michael Weigelt, Michael Masuch, Martin Adrion, Aljoscha Bauer, Katrin Wirsinger e Jörg Franke. "Sustainability Aspects of Current Market Developments, Different Product Types and Innovative Manufacturing Processes of Electric Motors". Applied Mechanics and Materials 882 (luglio 2018): 64–74. http://dx.doi.org/10.4028/www.scientific.net/amm.882.64.
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There are numerous levers and constraints affecting the sustainability of electric motors. While previous work mostly focuses on individual energy and resource efficiency potentials within single phases of the motor’s lifecycle, this paper summarizes sustainability aspects from three different perspectives, namely from the market, product and process view. The first part of this paper analyzes the electric motor market to emphasize the significance of this industry and to outline the importance of state-regulated efficiency classes. The second part provides an overview of the range of electric motor types and their sustainability characteristics. The third part contains an analysis of manufacturing processes in terms of energy and resource efficiency by pointing out appropriate key figures and optimization approaches. In doing so, the connection of the three perspectives market, product and processes offers a holistic view on sustainability aspects of electric motors.
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Nogal, Łukasz, Andrzej Magdziarz, Désiré Dauphin Rasolomampionona, Piotr Łukaszewski, Łukasz Sapuła e Radosław Szreder. "The Laboratory Analysis of the Thermal Processes Occurring in Low-Voltage Asynchronous Electric Motors". Energies 14, n. 8 (8 aprile 2021): 2056. http://dx.doi.org/10.3390/en14082056.
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The exact nature of thermal processes occurring in an electric motor is often unknown. Thus, the estimation of temperature rise using mathematical models and computational experiments is becoming increasingly important. Thermal analysis is the key design aspect, which has become significant in the design process for electric motors. The thermal analysis of electric motors can be helpful in developing effective thermal monitoring methods. This analysis is crucial for a better understanding of the overall performance and failure prevention for these electrical motors. In this paper, laboratory investigations of thermal processes in low-voltage asynchronous motors are described. The analysis of the results leads to the conclusion that the classic single-exponential models do not match the dynamically changing thermal processes in electric motors especially in the case of intermittent motor operation.
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Molnár, Denis, Miroslav Blatnický e Ján Dižo. "Design of the Power of an Electric Lifting Motor for a Single Girder Bridge Crane with a 500 Kg Load Capacity". Transport technic and technology 17, n. 2 (1 dicembre 2021): 23–29. http://dx.doi.org/10.2478/ttt-2021-0010.
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Abstract An electric hoist could be considered as the most important component of an electric overhead crane. Electric hoists are material handling equipment used for lifting, lowering, and transporting materials and products. They are powered by an electric motor and have a controller to adjust the lifting parameters. Three-phase induction motors are most often used as electric lifting motors for bridge cranes. This paper concerns the design of the power of the electric lifting motor for an electric hoist of the single girder bridge crane with the 500 kg load capacity. It represents the design of the electric lifting motor according to a commonly used scheme for the design of electric motors, from the power at a uniform load to the relative load of the motor. Based on the input data, the necessary motor parameters are calculated using Microsoft Excel. The main parameter is the static power of the motor, the calculated value of which is 0.823 kW. Based on the value of this power, a three-phase induction motor 1.1 kW, MS90-4 is selected. This electric lifting motor is suitable for the above-mentioned bridge crane, as it meets the condition of torque overload.
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Karasoy, Sertaç, Mustafa Burak Can, Fatma Öz e Ferhan Fıçıcı. "Electric Motor Selection Criteria for Traction System in Construction Machines". Orclever Proceedings of Research and Development 4, n. 1 (31 maggio 2024): 123–46. http://dx.doi.org/10.56038/oprd.v4i1.471.
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Recent developments in electric motors in construction machinery and the automotive sector's trend towards electric traction in recent years are among the factors triggering and influencing the shift towards electric traction in construction machinery. There is no doubt that electric construction machinery will be the first choice for urban operations in the future, but many research and development efforts are still ongoing to dominate the market. Electric motors are the most important components of power transmission systems in electric machines. The trend towards increasing power density and efficiency in power transmission systems contributes to different designs and improvements in basic electric motor topologies. This article provides an insight into the selection of electric motors to be used in power transmission components of electric construction machinery and allows for the comparison of different electric motors.
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Krishnamoorthy, Sreeram, e Preetha Parakkat Kesava Panikkar. "A comprehensive review of different electric motors for electric vehicles application". International Journal of Power Electronics and Drive Systems (IJPEDS) 15, n. 1 (1 marzo 2024): 74. http://dx.doi.org/10.11591/ijpeds.v15.i1.pp74-90.
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Electric vehicles (EVs) offer several advantages over internal combustion engines (ICE), including high energy efficiency, noise reduction, low maintenance, and a wider speed range. This results in lower fuel consumption, reducing dependency on oil imports and enhancing energy security. The motor drive is a critical component of EVs, providing the necessary propulsion force. This paper presents a comprehensive comparison of state-of-the-art motors suitable for EV applications, including DC motors, induction motors (IM), brushless DC motors (BLDC), permanent magnet synchronous motors (PMSM), and switched reluctance motors (SRM). Various design aspects relevant to traction applications, such as cost, reliability, efficiency, torque, fault-tolerance ability, excitation arrangements, and power density are also addressed. The performance of an EV based on the SRM drive is analyzed using MATLAB Simulink, with a special focus on parameters like speed, torque, flux, and state of charge (SOC). The review highlights that SRM drives have significant potential in EVs due to their reliable structure, fault tolerance capability, and magnet-free design. However, their application in EVs is currently limited due to torque ripples, as evident from the simulations. This paper is expected to serve as a foundation for further enhancing the performance of SRM drives for EV applications.
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Маiorov, A. A., e A. R. Safin. "The possibility of using permanent magnets without rare earth elements in electric motors". Power engineering: research, equipment, technology 24, n. 4 (17 agosto 2022): 116–30. http://dx.doi.org/10.30724/1998-9903-2022-24-4-116-130.
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THE PURPOSE. The use of rare earth permanent magnets in electric motors has become commonplace. The use of rare earth magnets in electric motors, such as neodymium (NdFeB), gives a significant increase in the characteristics of the electric motor. The prices of permanent magnet motors made of rare earth elements are highly dependent on the prices of magnets. So in 2012, prices for rare earth magnets increased sharply, which in turn led to a sharp increase in the cost of electric motors. The difficult situation in the world, as well as a possible new price hike for rare earth magnets, is worrying. Therefore, alternatives to rare earth permanent magnets should be considered. The aim of the study is to study and compare various alternatives to rare earth permanent magnets. Compare different types of electric motors. METHODS. When solving the tasks set, a comparative analysis of magnets made of various materials was carried out, which could replace neodymium magnets, which are most often used in electric motors. A comparison of different types of electric motors was also made. RESULTS. The article describes the relevance of the topic under consideration. The problems associated with the use of rare earth magnets are considered. Alternative options for rare-earth magnets, which are used in electric motors, are considered. Various types of electric motors are considered, the pros and cons of various types of electric motors are given. CONCLUSION. The article describes the reasons why it is necessary to abandon the use of rare earth magnets in electric motors (the most common neodymium magnets). The negative aspects of the use of rare earth magnets in electric motors are described. Alternative applications of rare-earth magnets in electric motors are described. This describes the possibility of restoring rare earth magnets, as well as the possibility of using various materials to create permanent magnets. After studying the problems with the use of rare earth magnets in electric motors, they came to the conclusion that it is necessary to consider various options for electric motors that would use magnets without the use of rare earth elements. Or consider different types of electric motors that do not use permanent magnets. So to replace the widely used neodymium magnets, ferrite magnets can come.
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Dirba, J., L. Lavrinovicha, N. Levin e V. Pugachev. "Application of Synchronous Brushless Motors in Electric Hand Tools". Latvian Journal of Physics and Technical Sciences 49, n. 1 (1 gennaio 2012): 29–34. http://dx.doi.org/10.2478/v10047-012-0003-7.
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Application of Synchronous Brushless Motors in Electric Hand Tools In the paper, the possibilities to apply synchronous brushless motors in the electric hand tools are considered. The potential of such motors is estimated in a wide range of characteristics. In particular, estimation is made for the electric hand plane with a synchronous motor having outer rotor and excitation from permanent magnets.
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V N, Dr Trupti. "BLDC Motor Speed Control with PID Controller in Electric Vehicles". INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, n. 05 (2 giugno 2024): 1–5. http://dx.doi.org/10.55041/ijsrem35332.
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This paper demonstrates that BLDC motors are the best motors for various electric vehicle control strategies. Synchronous motors are the group that includes BLDC motors. Future transportation is interested in electric vehicles because of their zero emissions, sustainability, efficiency, and variety of control methods. These motors are the best option for many applications; however, the majority of them need sensor-less control. Rotor-position sensing is necessary for BLDC motors operating in order to regulate the winding currents. A BLDC motor drive's speed can be controlled via sensor-less control, digital signal controllers, digital signal processors, fuzzy logic PI controllers, PID controllers, adaptive neuro-fuzzy controllers, genetic algorithm controllers, and other methods. The overarching goal of this research is to provide a simulation of the PID controller approach for BLDC motors in electric vehicles. Keywords: BLDC Motor, sensor, controller, sustainability
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Sakama, Sayako, Yutaka Tanaka e Akiya Kamimura. "Characteristics of Hydraulic and Electric Servo Motors". Actuators 11, n. 1 (5 gennaio 2022): 11. http://dx.doi.org/10.3390/act11010011.
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Until the 1970s, hydraulic actuators were widely used in many mechanical systems; however, recently, electric motors have become mainstream by virtue of their improved performance, and hydraulic motors have largely been replaced by electric motors in many applications. Although this trend is expected to continue into the future, it is important to comprehensively evaluate which motor is most suitable when designing mechanical systems. This paper presents the results of a survey of the performance of electric and hydraulic servo motors and aims to provide quantitative data that can be used as a reference for selecting appropriate motors. We surveyed AC, AC direct, brushless DC, and brushed DC electric motors and swash plate-type axial piston, bent axis-type axial piston, crank-type radial piston, and multistroke-type radial piston hydraulic motors. Performance data were collected from catalogs and nonpublic data. We compared and evaluated the characteristics of these diverse servo motors using indexes such as torque, rotating speed, output power, power density, and power rate.
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Glowacz, A. "Diagnostics of DC and Induction Motors Based on the Analysis of Acoustic Signals". Measurement Science Review 14, n. 5 (1 ottobre 2014): 257–62. http://dx.doi.org/10.2478/msr-2014-0035.
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Abstract In this paper, a non-invasive method of early fault diagnostics of electric motors was proposed. This method uses acoustic signals generated by electric motors. Essential features were extracted from acoustic signals of motors. A plan of study of acoustic signals of electric motors was proposed. Researches were carried out for faultless induction motor, induction motor with one faulty rotor bar, induction motor with two faulty rotor bars and flawless Direct Current, and Direct Current motor with shorted rotor coils. Researches were carried out for methods of signal processing: log area ratio coefficients, Multiple signal classification, Nearest Neighbor classifier and the Bayes classifier. A pattern creation process was carried out using 40 samples of sound. In the identification process 130 five-second test samples were used. The proposed approach will also reduce the costs of maintenance and the number of faulty motors in the industry.
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Miles, A. R. "Spherical electric motors". IEEE Potentials 9, n. 3 (ottobre 1990): 47–48. http://dx.doi.org/10.1109/45.101402.
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Nurmaganbetova, Gulim, Sultanbek Issenov, Vladimir Kaverin e Zhanat Issenov. "Development of a virtual hardware temperature observer for frequency-controlled asynchronous electric motors". Eastern-European Journal of Enterprise Technologies 3, n. 1 (123) (30 giugno 2023): 68–75. http://dx.doi.org/10.15587/1729-4061.2023.280357.
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One of the most common types of AC electric machines are asynchronous electric motors. Because of their simple and reliable design, they are used in many industries. In this paper, the object of research is an asynchronous electric motor with a short-circuited rotor. To ensure the normal operation of an asynchronous electric motor, the heating temperature of its active parts should not exceed the maximum permissible values, which are determined by the corresponding class of heat resistance of the insulation system used in the electric motor. In asynchronous electric motors, the stator winding is the most thermally vulnerable node, which is the first to fail when the temperature of the electric motor increases. Thermal protection devices protect an asynchronous electric motor from emergency operating modes accompanied by an unacceptable excess of the temperature of their windings. In order to build an indirect system of protection against overheating of the stator windings, a temperature observer has been developed using already available signals in a frequency-controlled electric drive. Simulation studies were performed in Matlab/Simulink application software packages. Simulation studies were carried out on the basis of asynchronous electric motors of the 4A series with a capacity of 30, 75 and 110 kW in the temperature range from 20 °C to 250 °C. As a result of the research, it was found that the error of indirect calculation of the temperature of electric motors, taking into account the correction factor, does not exceed 1 %. The proposed temperature observer can be used to build protections for asynchronous electric drives
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Liu, Xiang, Mian Li e Min Xu. "A new anti-skid control method for electric vehicles using the motor torque and the wheel acceleration with experimental verification". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231, n. 3 (5 agosto 2016): 347–59. http://dx.doi.org/10.1177/0954407016639444.
Testo completoAbstract (sommario):
Driving electric vehicles by electric motors can result in many unique advantages for dynamic control of electric vehicles. With the superior fast and accurate torque control performance of electric motors, electric vehicles, in particular, can achieve higher levels of safety and handling performance. A simple, effective and efficient anti-skid control method specified for electric vehicles is proposed in this paper by considering the real-world resistance factors. This method is developed on the basis of sensing and regulating a newly defined parameter, namely the ratio of the drive motor torque to the angular acceleration of the wheels, both of which can be easily obtained for electric motors. The monotonic relationship between the slip ratio and the ratio of the drive motor torque to the angular acceleration of the wheels is proved under both acceleration conditions and deceleration conditions, by considering the real-world resistance factors. The simulations and the experimental results show that the ratio of the drive motor torque to the angular acceleration of the wheels can be efficiently used, instead of the slip ratio, in anti-skid control. The results indicate that electric vehicles can achieve high-performance vehicle motion control with more flexible and simplified configurations by using in-wheel electric motors.
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Sinan Cabuk, Ali. "EXPERIMENTAL DATA ACQUISITION OF VIBRATION FORCE IN DIRECT CURRENT MOTOR FOR MINI SUMO ROBOT". Applied Researches in Technics, Technologies and Education 7, n. 1 (2019): 48–57. http://dx.doi.org/10.15547/artte.2019.01.006.
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Vibration is the oscillating or periodic movement of electric motors from its position to a certain point, which has effect on performance. The vibration of electrical motor is essential causes of machine failure. Therefore, reaction force of electric motors is the most important parameter for their working life. It is monitoring and minimize the vibration generated by the electric motor. One of the objectives of this study is to present that forced vibration analysis is compatible technique for diagnosing electromagnetic and mechanical problems in electric motors. In this study aims at vibration analysis on Direct Current (DC) motor, that is the most preferred motors for robotic application. DC motor used in this study has 15 W output power, 400 min-1 shaft speed and 12 V terminal voltage, which is widely implemented in robot competition. Vibration forced was measured with accelerometer sensor on the motor. Test vibration results of the motor were checked it whether limiting value or not. In this study, vibration effect of DC motor in mini sumo robot is presented with during competition and smooth road conditions.
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Momen, Faizul, Khwaja M. Rahman, Yochan Son e Peter Savagian. "Electric Motor Design of General Motors’ Chevrolet Bolt Electric Vehicle". SAE International Journal of Alternative Powertrains 5, n. 2 (5 aprile 2016): 286–93. http://dx.doi.org/10.4271/2016-01-1228.
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Sihombing, Panangian Mahadi, Usman Usman, Hairul Amren Samosir e Catra Indra Cahyadi. "AN IOT PROTOTYPE FOR TEMPERATURE MONITORING AND AUTOMATIC CONTROL OF ELECTRIC MOTOR". JURTEKSI (Jurnal Teknologi dan Sistem Informasi) 9, n. 4 (2 settembre 2023): 559–66. http://dx.doi.org/10.33330/jurteksi.v9i4.2255.
Testo completoAbstract (sommario):
Abstract: The continuous use of an electric motor in some industries causes the electric motor to malfunction early. Such damage is generally caused by overheating. Therefore, to overcome the problem of overheating, most industries use two motors that work alternately. Both electric motors function as running and standby which are generally controlled manually by the operator or using a time delay relay (TDR). However, the control of both motors by the operator is not effective because it allows human error to occur. The use of TDR is also ineffective because it does not make the temperature of the electric motor a reference in controlling the work of the two electric motors. This research aims to produce a prototype that can monitor the temperature of the electric motor in real-time and control the electric motor based on the temperature of the electric motor. The Wemos D1R2 is used as a processor to control both electric motors and transmit the temperature of the electric motor to a smartphone via the internet. The MLX90614 sensor is used as an infrared-based temperature sensor. Based on the results of testing the overall performance of the prototype, it is known that the temperature readings of the electric motor are quite accurate with mean error and standard deviation of 0.13oC and 0.15oC, respectively. The prototype is also capable of controlling both electric motors automatically and controlling a cooler via a smartphone. Keywords: Electric Motor; MLX90614; Overheating; Wemos D1R2. Abstrak: Penggunaan sebuah motor listrik secara terus menerus pada sebagian industri menyebabkan motor listrik tersebut mengalami kerusakan lebih awal. Kerusakan tersebut umumnya disebabkan oleh panas berlebih. Oleh karena itu, untuk mengatasi masalah panas berlebih tersebut maka sebagian besar industri menggunakan dua buah motor yang bekerja secara bergantian. Kedua motor listrik tersebut difungsikan sebagai running dan standby yang mana umumnya dikendalikan secara manual oleh operator atau menggunakan time delay relay (TDR). Namun, pengendalian kedua motor oleh operator tidaklah efektif karena memungkinkan terjadinya human error. Penggunaan TDR juga tidak efektif karena tidak menjadikan suhu motor listrik sebagai acuan dalam mengendalikan kerja kedua motor listrik tersebut. Penelitian ini bertujuan menghasilkan sebuah prototipe yang mampu mengawasi suhu motor listrik secara real-time dan mengendalikan motor listrik berdasarkan suhu motor listrik. Wemos D1R2 digunakan sebagai prosesor untuk mengendalikan kedua motor listrik dan mengirimkan suhu motor listrik ke smartphone melalui internet. Sensor MLX90614 digunakan sebagai sensor suhu berbasis infra merah. Berdasarkan hasil pengujian kinerja prototipe secara keseluruhan diketahui bahwa hasil pembacaan suhu motor listrik cukup akurat dengan mean error dan standar deviasi masing-masing 0,13oC dan 0,15oC. Prototipe juga mampu mengontrol kedua motor listrik secara otomatis dan mengontrol sebuah pendingin melalui smartphone. Kata kunci: Motor Listrik; MLX90614; Panas Berlebih; Wemos D1R2.
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Grebenikov, V. V., R. V. Gamaliia e S. A. Dadychyn. "COMPARATIVE ANALYSIS OF MAGNETIC SYSTEMS OF PERMANENT MAGNET MOTORS FOR TRAM". Tekhnichna Elektrodynamika 2021, n. 5 (16 agosto 2021): 27–37. http://dx.doi.org/10.15407/techned2021.05.027.
Testo completoAbstract (sommario):
A numerical study of eight configurations of magnetic systems of electric motors with permanent magnets for driving a tram was carried out. The permanent magnet electric motor can be used as a high-speed electric drive to replace the existing DC electric drive of a tram, and as a low-speed gearless electric drive of a new generation tram. The most promising configurations of magnetic systems of electric motors with permanent magnets for tram drive have been determined. By varying the geometrical and winding parameters of each of the investigated models of electric motors, the mechanical characteristics are determined, at which the given torque and power are achieved in the entire range of the rotor speed. Also, a thermal calculation was performed taking into account the urban driving cycle of high-speed electric motors with air cooling by a fan and low-speed ones in liquid cooling mode. The calculation of the characteristics of the investigated electric motors was carried out in the Simcentre MotorSolve software package. References 13, figures 8, tables 3.
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Najilatil Mazda, Chadziqatun, Dwi Agustina Kurniawati e Ira Setyaningsih. "Analisis Triple Helix Peran Stakeholder Dalam Meningkatkan Penggunaan Motor Listrik Di Indonesia". Jurnal Teknologi 15, n. 2 (16 dicembre 2022): 118–23. http://dx.doi.org/10.34151/jurtek.v15i2.3167.
Testo completoAbstract (sommario):
In this modern era, the use of electric vehicles is not a new thing. The grand strategy of energy national (GSEN) has fourteen strategic programs to be implemented, one of them is increasing the use of battery- electric vehicles motorized, in order to reduce the imports of fuel oil (BBM) and LPG as well as equitable electrification in Indonesia. This program needs to support by cooperation and role contribution from participants (stakeholders). This study was conducted to determine the role of stakeholders to increasing the use of electric motors in Indonesia using a triple helix methode. The data collection was carried out through interviews and documentation studies. The analyze data was use miles and hubberman. The results showed that based on the triple helix analysis, there were 3 stakeholders involved to increasing the use of electric motors in Indonesia. There were universities, industry and government. The universities have a role in conducting research and development for electric motor products, this can be done through final project research or providing research grants the development electric motors topic. The industry has a role in producing electric motors, for example Gesit Companies which produces electric motors, and also raw materials industry and spare part industry as well as component of electric motors. The government has a role in regulations through policies of equitable electrification motor vehicles in Indonesia. One of them is from the Minister of Transportation Regulation (Permenhub) Number 65 of 2020 concerning the conversion of fuel motorcycles into battery-electric motorcycles.
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Kurilin, Sergey P., Vladimir V. Fedotov, Irina S. Savateeva e Alexander V. Zakharov. "Mathematical model for the design of linear asynchronous electric motors and its software implementation". Journal Of Applied Informatics 19, n. 1 (12 febbraio 2024): 96–112. http://dx.doi.org/10.37791/2687-0649-2024-19-1-96-112.
Testo completoAbstract (sommario):
Mathematical models are the main tool for the layout design of linear asynchronous electric motors. Existing design models of linear asynchronous electric motors assume that the device is powered from a source of multiphase symmetrical positive sequence current, which excludes from consideration the asymmetry of the inductor phase currents and the associated reduction in traction force. This approach is not flexible enough, since the operation of linear asynchronous electric motors in a wide range of movement speeds assumes a functional relationship between the current asymmetry coefficient and the movement speed. The study developed a mathematical model for design purposes that implements the functional relationship between the current asymmetry coefficient and the speed of movement. The mathematical model represents 13 linear equations linking geometric dimensions, current loads, electromagnetic field characteristics and mechanical forces with the speed of the secondary element of the electric motor. The current load of an electric motor has a variable degree of ellipticity depending on the speed of movement. An algorithmic study of the mathematical model was carried out and corresponding software modeling tools were developed. The proposed program algorithm, containing two subroutines, is implemented using the Maple symbolic computing software package. In order to expand the range of users, the software model is additionally implemented in C++. In this case, the functional dependence of the asymmetry coefficient of the exciting current wave on the speed of movement is implemented in the form of an iterative procedure for the case of connecting the winding of the linear asynchronous electric motors inductor to a source of symmetrical three-phase voltage according to the “triangle” circuit. Using the example of a three-phase linear asynchronous electric motors, the electromagnetic and mechanical characteristics of the electric motor were simulated. It was stated that the influence of current asymmetry on the mechanical characteristics of the linear asynchronous electric motors is small and is expressed in the region of high speeds. This makes it possible, in design tasks for the layout of an electric motor, to use models that involve powering the linear asynchronous electric motors from a symmetrical current source or to introduce a fixed asymmetry coefficient into them.
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Rubanenko, Oleksandr, e Oleksii Tokarchuk. "DETERMINATION OF THE TECHNICAL CONDITION OF THE ELECTRIC MOTOR UNDER INCOMPLETE INITIAL DATA CONDITIONS". ENGINEERING, ENERGY, TRANSPORT AIC, n. 3(114) (28 settembre 2021): 136–48. http://dx.doi.org/10.37128/2520-6168-2021-3-15.
Testo completoAbstract (sommario):
The article analyzes the damageability of electric motors at agricultural processing enterprises in Ukraine. Modern microprocessor systems are being introduced in order to automate the process of determining the technical condition of electric motors. Their software implements complex and informative methods for determining the current state of electric motors based on the analysis of the current values of diagnostic parameters. The current values of not all diagnostic parameters of electric motors are known at the time of determining the technical condition. Therefore, their predicted values are applied. The authors propose to evaluate the current technical condition of electric motors by analyzing the value of the coefficient of its residual life. The values of this coefficient vary from 1 p.p. (the engine is fine) to 0 p.p. (the engine is defective.) An example shows the use of software, namely, Anfis editor of the Fuzzy Logic Tool Box application of the Matlab application package, for creating a mathematical model of the residual life coefficient of an electric motor. It is noted that the error in training the model based on 582 considered variants of combinations of diagnostic parameters and the corresponding values of the residual life of the electric motor does not exceed 0.00288 p.p. (0.2%), and for test voters – 4.1%. Taking into account the large number of mutually influential diagnostic parameters of electric motors, in order to simplify the assessment of the current technical condition, we propose to use the integral diagnostic parameter the coefficient of residual life. At the same time, it is difficult to determine the technical condition of a working electric motor, because some diagnostic parameters can be measured in a disconnected or disassembled electric motor (for example, measuring the insulation resistance of the stator winding with a megaohmmeter or measuring the diameter of the rotor shaft under the bearing in order to identify the cause of vibration). Therefore, determined at the rate of the process, under such conditions, the technical state of the operating electric motor is predictable fuzzy. To determine it, one should use the methods and means of neuro-fuzzy modeling. Therefore, the problem of improving the quality of operation of electric motors in agricultural production by improving the quality of their diagnostics is relevant and of great national economic importance.
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Kovalev, Vladimir Z., Egor S. Balyklov e Emil I. Husainov. "On some operating modes of a submersible induction electric motor". Yugra State University Bulletin 18, n. 4 (14 gennaio 2023): 93–102. http://dx.doi.org/10.18822/byusu20220493-102.
Testo completoAbstract (sommario):
Object of research: induction submersible electric motor as a part of electric drive centrifugal pump.
Subject of the research: non-nominal operation modes of induction submersible electric motors, including modes of wedging.
Purpose of research: creation of research methodology of operation of induction submersible electric motors at non-nominal modes of operation, including variation of frequency of feeding voltage and its magnitude.
Methods of research: theory of electromechanical transformation of energy, digital modeling, statistical data processing, methods designing of experiments.
Main results of research: the relevance of submersible electric motors research in non-nominal conditions is substantiated; the technique of asynchronous submersible electric motors operation research in non-nominal operating modes is built; the proposed technique is tested on the example of the ESP unit wedging mode.
33
Chang, Sungwoo, Noboru Niguchi, Je-Hoon Lee e Katsuhiro Hirata. "Improvement of Torque Performance and Energy Density of PM-Type Vernier Motor Utilizing Saddle Coil and Salient Pole". Applied Sciences 11, n. 6 (22 marzo 2021): 2818. http://dx.doi.org/10.3390/app11062818.
Testo completoAbstract (sommario):
In electric motors, the use of rare-earth magnets has been increasing rapidly. A stronger magnet force of the magnet enables the motor’s higher performance, resulting in the most high-performance motors generally using rare-earth magnets. However, these magnets have two crucial disadvantages: the potential restrictions on the supply of rare-earth magnetic materials and the sharp fluctuation in price. Thus, many recent researches focus on developing high-performance electric motors and reducing the use of critical rare-earth magnets. By increasing the torque density of the motor, we can reduce the use of permanent magnets. Focusing on this point, and we presented a double half permanent magnet (DHPM)-type vernier motor. This paper proposed a new saddle coil permanent magnet vernier motor with improved performance compared to its predecessor. The main feature of the proposed motor is that the permanent magnet and coil in the stator of a DHPM-type vernier motor is replaced by salient poles and saddle coils, respectively. We also investigate its characteristics through various simulations.
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Tamai, Mitsuhiro. "Marine Electric Motors and Motor-related Equipments". Marine Engineering 52, n. 1 (2017): 65–70. http://dx.doi.org/10.5988/jime.52.65.
Testo completo
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Siregar, Leonardus, Rudianto Silaen e Jubel Lasro Hutabarat. "Pengaruh Perubahan Beban Terhadap Putaran dan Daya Masuk Motor Induksi Tiga Fasa (Aplikasi Pada Laboratorium Konversi Energi Listrik FT-UHN)". Jurnal ELPOTECS 4, n. 1 (30 marzo 2021): 1–15. http://dx.doi.org/10.51622/elpotecs.v4i1.446.
Testo completoAbstract (sommario):
An electric motor is an electro-magnetic device that converts electrical energy into mechanical energy. This mechanical energy is used to, for example, rotate a pump impeller, fan or blower, drive a compressor, lift materials, etc. Electric motors are also used at home (mixers, electric drills, wind fans) and in industry. Electric motors are sometimes called the "workhorse" of industry because it is estimated that they use about 70% of the industry's total electrical load.
And at this time the power from the power source, namely PLN (State Electricity Company) often changes in voltage. Therefore, it is necessary to know by calculating the rotation and input power which is influenced by changes in the load of an induction motor as an illustration of induction motors in society which generally use single-phase induction motors. In this article, a 4 HP cage rotor 3-phase induction motor with a voltage of 380/220 volts is used in the electrical energy conversion laboratory of FT-UHN.
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Sitanggang, Mahiras, e Leonardus Siregar. "Pengaruh Perubahan Beban Terhadap Putaran dan Daya Masuk Motor Induksi Tiga Fasa (Aplikasi Pada Laboratorium Konversi Energi Listrik FT-UHN)". Jurnal ELPOTECS 4, n. 1 (30 marzo 2021): 32–37. http://dx.doi.org/10.51622/elpotecs.v4i1.449.
Testo completoAbstract (sommario):
An electric motor is an electro-magnetic device that converts electrical energy into mechanical energy. This mechanical energy is used to, for example, rotate a pump impeller, fan or blower, drive a compressor, lift materials, etc. Electric motors are also used at home (mixers, electric drills, wind fans) and in industry. Electric motors are sometimes called the "workhorse" of industry because it is estimated that they use about 70% of the industry's total electrical load.
And at this time the power from the power source, namely PLN (State Electricity Company) often changes in voltage. Therefore, it is necessary to know by calculating the rotation and input power which is influenced by changes in the load of an induction motor as an illustration of induction motors in society which generally use single-phase induction motors. In this article, a 4 HP cage rotor 3-phase induction motor with a voltage of 380/220 volts is used in the electrical energy conversion laboratory of FT-UHN.
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Ulinuha, Agus, e Agita Cahya Ramadhany. "The Comparison of Electric Motor Performance in Powering Electric Motorcycle". E3S Web of Conferences 500 (2024): 03011. http://dx.doi.org/10.1051/e3sconf/202450003011.
Testo completoAbstract (sommario):
The increase use of vehicles with combustion engine has caused intensive exploration of fossil fuels and severe pollutions. The replacement of this engine with electric motor is expected to solve both problems. For optimal selection of the motor, assessment of its performance is necessary. This may be carried out by comparing the performance of the motors used for powering electric motorcycle. This paper presents the performance comparison of 2 motors powering a modified motorcycle. The engine of the motorcycle was successively replaced with BLDC motor and DC motor and their performances were measured. The motorcycle was loaded with 1 and 2 passengers with the total weight of 59 and 109 Kg, respectively. The motorcycle speed (km/h) was adjusted up to 30 km/h. The results of the test indicate that DC motor requires power of 557.74 Watt at the speed of 317.04 rpm and generates torque of 16.81 Nm with energy consumption of 41.55 km/kWh. For the BLDC motor, it requires power of 526.62 Watt at the speed of 316.78 rpm and generates torque of 15.88 Nm with energy consumption of 50.59 km/kWh. For the same distance, DC Motor enables generates higher torque than BLDC motor. However, BLDC motor may present lower energy consumption per kWh than DC motor.
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Mavlonov, Jamshid, Sanjarbek Ruzimov, Andrea Tonoli, Nicola Amati e Akmal Mukhitdinov. "Sensitivity Analysis of Electric Energy Consumption in Battery Electric Vehicles with Different Electric Motors". World Electric Vehicle Journal 14, n. 2 (30 gennaio 2023): 36. http://dx.doi.org/10.3390/wevj14020036.
Testo completoAbstract (sommario):
In the last decade, a number of research works in electrified vehicles have been devoted to the analysis of the electric consumption of battery electric vehicles and the evaluation of the main influencing factors. The literature analysis reveals that the electric motor size, efficiency, and driving condition substantially affect the electric energy stored in the vehicle battery. This paper studies the degree of sensitivity of energy consumption to electric motor size and to its efficiency map characteristics. In order to accomplish this task, three electric motors whose parameters are re-scaled to fit the maximum power torque and speed with different efficiency maps are simulated by installing them on two commercially available battery electric vehicles. This allows for isolating the influence of the efficiency map on electricity consumption. The original characteristics of the motors are then used to evaluate the influence on the electricity consumption of both the size and the efficiency characteristics. The results of the simulation revealed that the influences of the efficiency map and the electric motor size can be around 8–10% and 2–11%, respectively. When both factors are taken into account, the overall difference in electricity consumption can be around 10–21%.
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Hervilla, Ralph P., Ruben H. Habaña, Zumel Cadenas, Salem Joh P. Suelon e Efren S. Tellermo. "Advancements in Three-Phase Electric Motor Control: The Dual Voltag Motor Controller for Seamless Voltage Switching and Enhanced Efficiency". Journal of Advanced Zoology 44, S-5 (1 novembre 2023): 1571–77. http://dx.doi.org/10.17762/jaz.v44is-5.1394.
Testo completoAbstract (sommario):
The primary objective of this research was to create, manufacture, and assess the operational efficiency of a Dual Voltage Motor Controller capable of automatically detecting the source voltage in a three-phase system and regulating the electric motor to function with either 220V or 440V AC. The resulting technology comprises a combination of magnetic contactors and a microcontroller, serving as a switching mechanism that streamlines the reconfiguration of the electric motor's twelve leads in a delta-delta configuration. This research was conducted at Guimaras State University, focusing on the development of a device aimed at eliminating the need for rewiring motor terminals when switching between 220V AC and 440V AC power sources, and vice versa. The device is designed exclusively for operation within a three-phase system and for electric motors utilizing a delta-delta configuration with twelve leads. Upon assessing the results of the technical evaluation, it was evident that the Dual Voltage Motor Controller effectively managed to switch the electric motor between 220V and 440V alternating current. Furthermore, the data revealed that the device allowed the electric motor to operate in both forward and reverse rotations, whether under low or high voltage conditions. By introducing this innovative technology, the research effectively resolved the limitations of existing motor controllers by introducing auto-detection of the source voltage and facilitating the seamless transfer of terminal connections via magnetic contactors. According to the feedback from technical experts, there is potential for expanding the device's applicability beyond delta-delta connected motors to also encompass wye-delta starting and running configurations for three-phase alternating current motors.
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Mbadiwe, Enwelum I., Erwan Sulaiman, Zarafi Md Ahmad e M. F. Omar. "Permanent magnet flux switching motor technology as a solution for high torque clean electric vehicle drive". International Journal of Power Electronics and Drive Systems (IJPEDS) 10, n. 2 (1 giugno 2019): 575. http://dx.doi.org/10.11591/ijpeds.v10.i2.pp575-584.
Testo completoAbstract (sommario):
<span lang="EN-US">A breakthrough in this century has been the development of electric vehicle which is propelled by electric motor powered by electricity. Already, many electric motors have been used for electric vehicle application but performances are low. In this paper, a permanent magnet motor technology using unconventional segmented rotor for high torque application is presented. Unlike conventional motors, this design, flux switching motor (FSM) is an advance form of synchronous machine with double rotating frequency. It accommodates both armature winding and flux source on the stator while the rotor is a simple passive laminated sheet steel. Conventionally, rotor of the maiden FSM and many emerging designs have focused on the salient pole, this design employs segmented rotor. Segmented rotor has advantages of short flux path more than salient rotor pole resulting in high flux linkage. Geometric topology of the proposed motor is introduced. It consists of 24Stator-14Pole using PM flux source with alternate stator tooth armature winding. The 2D-FEA model utilized JMAG Tool Solver to design and analyze motor’s performance in terms of torque with average torque output of 470Nm. The suitability of segmented outer-rotor FS motor as a high torque machine, using permanent magnet technology is a reliable candidate for electric vehicle.</span>
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Goman, Victor, Safarbek Oshurbekov, Vadim Kazakbaev, Vladimir Prakht e Vladimir Dmitrievskii. "Energy Efficiency Analysis of Fixed-Speed Pump Drives with Various Types of Motors". Applied Sciences 9, n. 24 (4 dicembre 2019): 5295. http://dx.doi.org/10.3390/app9245295.
Testo completoAbstract (sommario):
The paper presents a comparative analysis of energy consumption by 2.2 kW electric motors of various types and energy efficiency classes in the electric drive of a pump unit with throttle control in a water supply system. Line-start permanent-magnet synchronous motors of the IE4 energy efficiency class and induction motors of the IE4 and IE3 energy efficiency classes of various manufacturers were considered (IE4 and IE3 are labels of energy efficiency classes of electric motors according to IEC 60034-30-1 standard). Energy consumption at a hydraulic load changing under a typical duty cycle was calculated based on the nameplate data of the pump and electric motors. The developed method shows that selecting an electric motor based on the IE energy efficiency class under the IEC 60034-30-1 standard (i.e., based on efficiency at a rated load) may not provide the minimum energy consumption of a variable flow pump unit over a typical duty cycle. In particular, the considered IE4 class line-start permanent-magnet synchronous motors do not provide significant advantages over IE4 class induction motors, and sometimes even over IE3 class induction motors when they are used in variable flow pump units.
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Gonzalez, Patxi, Garikoitz Buigues e Angel Javier Mazon. "Noise in Electric Motors: A Comprehensive Review". Energies 16, n. 14 (11 luglio 2023): 5311. http://dx.doi.org/10.3390/en16145311.
Testo completoAbstract (sommario):
Electric machines are important devices that convert electrical energy into mechanical energy and are extensively used in a wide range of applications. Recent years have seen an increase in applications where electric motors are used. The frequent use of electric motors in noise-sensitive environments increases the requirements placed on electric motors intended for these applications, especially when compared to electric motors commonly used in industrial applications. This paper provides a comprehensive review of electric motor noise. Firstly, a brief introduction to noise is given. Then, the sources of electromagnetic noise and vibration in electric machines, including mechanical, aerodynamic and electromagnetic factors, are presented. Different methods such as analytical, numerical and semi-analytical for calculating electromagnetic force, natural frequencies and noise are also analyzed. Various methods for noise reduction are presented, including skewing, stator and rotor notching and slot opening width. Finally, noise measurement standards and procedures are described.
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Król, Emil, Marcin Maciążek e Tomasz Wolnik. "Review of Vibroacoustic Analysis Methods of Electric Vehicles Motors". Energies 16, n. 4 (19 febbraio 2023): 2041. http://dx.doi.org/10.3390/en16042041.
Testo completoAbstract (sommario):
The dynamic development of electromobility has resulted in new directions of research, one of which is the analysis of the noise of traction motors. The designs of the motors used in electric vehicles are relatively new and often modified. In addition, strong competition also forces an increase in the power generated per unit mass of the motor, often at the expense of weakening the mechanical structure. This may result in an increase in the noise level generated by the electric drive, so this issue should be analyzed at the motor design stage. Different construction and operating conditions in relation to industrial or railway traction motors make it necessary to constantly develop methods for the noise analysis of the motors for electric vehicles. The aim of this article is to review the methods used so far in an analysis of the noise generated by the motors for electric vehicles. Three main methods are used by the authors of this paper: the analytical method, the hybrid method using two-dimensional models, and the hybrid method using three-dimensional models. In addition to the review of these methods, the paper also focuses on a synthetic summary of the most important factors determining the level and nature of the noise generated by electric vehicle motors.
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Fedirko, Mykhailo, Ruslan Brukhanskyi, Vasyl Brych e Ruslana Olishynska. "MODERNIZATION OF THE ELECTRIC DRIVE OF PUMPING UNITS OF THE DISTRICT HEATING NETWORK IN THE CONTEXT OF INCREASING THEIR ENERGY EFFICIENCY". Energy saving. Power engineering. Energy audit., n. 5-6(183-184) (23 novembre 2023): 27–40. http://dx.doi.org/10.20998/2313-8890.2023.05.03.
Testo completoAbstract (sommario):
Quantitative and qualitative indicators of the modernization of the electric drive of a pumping unit of a network with throttle control of the coolant supply of a centralized heat supply system are determined. The possibility of modernizing the electric drive by replacing outdated electric motors of energy efficiency class IE1, which are still used in electric drives of pumping units, with electric motors of energy efficiency classes IE2 and IE3 from different manufacturers, has been substantiated. The energy consumption was calculated based on the technical data of the pump and electric motors provided by the manufacturers and includes the calculation of the energy consumption of pumping units in a typical operating cycle typical for district heating networks, which involves operation at reduced load for a long time. Comparative calculated data on the daily and annual energy consumption of the considered electric motors in a typical operating cycle of a pumping unit, with respect to the least energy-efficient electric motor among those considered, were obtained. The practical significance of the results obtained is to understand that the selection of an electric motor by efficiency at variable load, i.e., actually on the basis of the IE energy efficiency class assigned in accordance with the IEC 60034-30-1 standard, is incorrect, It is substantiated that the choice should be made using the efficiency interpolated by the method of polynomial interpolation of the motor loss curve, while taking into account the economic feasibility of choosing an electric motor between energy efficiency classes, in this case IE2 and IE3, and different manufacturers.
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Riyadi, Slamet. "Peran Motor Listrik pada Transportasi Ramah Lingkungan". PRAXIS 1, n. 1 (7 settembre 2018): 13. http://dx.doi.org/10.24167/praxis.v1i1.1626.
Testo completoAbstract (sommario):
The fossil based fuel crisis and environmental degradation issues have caused the transportation system to use electric motors as an alternative to combustion engines. The emergence of electric hybrid vehicles and electric vehicles has been a sign that the revolution in the field of transportation has reached the implementation stage. DC motors that are capable to generate large torque becomes an option at first, but due to its limitations then other types of motors which have advantages such as DC motor but eliminating the its weakness are developed. BLDC (Brushless Direct Current) motors and switched reluctance motors are priority in implementation. This paper describes the characteristics and performance of the three motors which can be used as the background for developing environmentally friendly transportation system
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Li, Xuefei, Chao Duan, Kun Bai e Zongwei Yao. "Operating Performance of Pure Electric Loaders with Different Types of Motors Based on Simulation Analysis". Energies 14, n. 3 (26 gennaio 2021): 617. http://dx.doi.org/10.3390/en14030617.
Testo completoAbstract (sommario):
The electrification of loader designs can utilise several power motor types. Hence, this study investigates the operational performance of pure electric-powered loaders matched with three types of motors. Firstly, for the ZL08 loader, it is proposed that a pure electric-powered loader structure adopts two motors to drive the walking and hydraulic systems separately. Secondly, the dynamic parameters of the two motors were matched, and then, a joint vehicle dynamics model of the control system, the Multi-Body Dynamics (MBD) module and the material Discrete Element Method (DEM) module, was established. Finally, the performance of the walking system with three motors was tested by inserting three materials and using accelerating and climbing methods. The operating performance of the hydraulic system was tested by shovelling and unloading three materials. Results show that when inserting difficult materials, the loader’s walking system with switched reluctance motors is 9.74–21.2% deeper than that with the other two motors and 11.7–56.2% faster at the same depth. The hydraulic system consumes 3–15.7% less energy when matched with a permanent magnet synchronous motor than the other two motors. Pure electric loaders have the best operating performance when the walking system is matched with a switched reluctance motor, and the hydraulic system is matched with a permanent magnet synchronous motor.
47
PROKHOR, Denis I. "Results of performance tests of an experimental class H insulation system for locomotive traction motors and its monitoring using the mobile diagnostics means". BULLETIN OF SCIENTIFIC RESEARCH RESULTS 2021, n. 4 (dicembre 2021): 35–46. http://dx.doi.org/10.20295/2223-9987-2021-4-35-46.
Testo completoAbstract (sommario):
Objective: To perform traction electric motor performance tests with an experimental class H heat resistance insulation system. Methods: An experimental set of traction electric motors was manufactured at the Voronezh Diesel Locomotive Repair Plant to be compared with a motor of class F insulation. Results: The performance indicators of controlled locomotives have been summarized. Explanations and definition of additional insulation parameters and an example of their use in case of traction electric motor failure due to damage to controlled locomotives have been given. Practical importance: The proposed methodology for predictive diagnostics of traction electric motors performance can be used in service locomotive depots.
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Valerii Hraniak, Valerii Hraniak, e Oleksandr Kozhushko. "EXPRESS METHOD OF DETERMINING INSTANT CHARACTERISTICS OF ASYNCHRONOUS ELECTRIC MOTORS". ENGINEERING, ENERGY, TRANSPORT AIC, n. 3(122) (2 dicembre 2023): 124–30. http://dx.doi.org/10.37128/2520-6168-2023-3-14.
Testo completoAbstract (sommario):
A current trend during the last decade is the growing importance of automated electric drives that use asynchronous electric motors. This is due to the development of theoretical methods for modeling their work with high accuracy and a decrease in the cost of power semiconductor technology, which contributed to improving the efficiency and reducing the cost of such systems. This trend has led to the expansion of induction motors not only in traditional electric drive systems with easy starting conditions, but also in traction systems and systems with large starting torques that normally used DC motors. However, this has also led to technical challenges in the design and operation of induction motors due to their particular mechanical characteristics, which have a slightly lower starting torque value. This disadvantage can be eliminated by increasing the motor power in the design, but this can lead to a decrease in efficiency and an increase in the cost of the electric drive. Therefore, it is important to conduct further research to improve the starting characteristics of induction motors. With this in mind, asynchronous motors remain the most common electric machines used in various industries. Their use in industry is growing, and their applications are constantly expanding. The development of express methods for determining torque characteristics, which will allow to reduce the complexity of determining the starting torques of asynchronous motors, is an urgent task that is of great importance in practice. This article offers an express method for determining the torque characteristics of asynchronous electric motors, which helps to significantly reduce the complexity of testing such machines. A general mathematical model for controlling the torque characteristics of electric machines has also been developed, which makes it possible to unambiguously establish the dependence of the starting torque of an asynchronous motor on the angular position of the rotor on the basis of data obtained during experiments.
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Gavrilović, Branislav, e Baboshin Aleksandrovich. "Simulations of electric multiple unit series 413/417 drives on the electrified tracks of "Serbian Railways"". Engineering Today, n. 00 (2024): 27. http://dx.doi.org/10.5937/engtoday2400003g.
Testo completoAbstract (sommario):
In the paper, the Matlab-Simulink model of simulation of operation of the ŽS 413/417 series electric multiple unit (EMU) in traction and braking mode is exposed where changes are observed: stator currents of three-phase traction motors, traction electric motor speeds and electric multiple unit, electromagnetic torque on the rotor shaft of the traction electric motor and DC bus voltage. The model allowed review of the listed parameters for: different allowed values of contact network voltage and total voltage distortion at the place of connection of the electric multiple unit to the contact network, different mechanical loads of electric multiple unit and traction electric motor and different train speeds and rotation of traction electric motors. Appropriate conclusions were made through the analysis of the simulation results obtained.
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Nikolić, Saša, e Radoš Ćalasan. "Increasing the reliability and availability of the electric motor using combined static and dynamic diagnostics". Journal of Energy - Energija 70, n. 4 (26 settembre 2022): 3–6. http://dx.doi.org/10.37798/202170415.
Testo completoAbstract (sommario):
The aim of this paper is to point out the importance of early diagnostics and assessment of the condition of the electric motor in increasing the reliability and availability of the plant. Electric motors are unavoidable elements in every production process. As the complexity of the process increases, the number of electric motors involved in it increases. By increasing the number of electric motors, the possibility of cancelling and interrupting production increases. It is therefore very important to monitor the situation and detect defects at an early stage so that timely repair or replacement can be planned, without affecting the production process. Modern diagnostic methods that can be used both during the operation of the electric motor, and with the dismounted and dismantled electric motor are presented in the paper. With good organization and testing schedule and a combination of static and dynamic diagnostic methods, the reliability and availability of the plant can be significantly increased. With increased reliability and availability, a reduction in maintenance costs is achieved. In this article, some examples from the author's practice are given, when serious engine defects were discovered. These cases confirm the value of predictive testing to increase reliability of electric motor.