Bibliografie tematiche / Electric motors

Letteratura scientifica selezionata sul tema "Electric motors"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 7 settembre 2023

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Articoli di riviste sul tema "Electric motors"

1

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.

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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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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.

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Abstract (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.

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Abstract (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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4

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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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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6

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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Feri Febrian Syah e Endi Permata. "PERBAIKAN DAN PEMELIHARAAN MOTOR LISTRIK PENGGERAK WATER JET PUMP DI AREA WASTE HEAT RECOVERY SYSTEM PT CEMINDO GEMILANG". JURAL RISET RUMPUN ILMU TEKNIK 1, n. 1 (30 aprile 2022): 78–87. http://dx.doi.org/10.55606/jurritek.v1i1.299.

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Electricity is one of the vital needs that is indispensable for all humans and other places, one of which is PT. Cemindo Gemilang, engaged in the cement-producing industry, requires a huge electricity capacity. To reduce or reduce the cost of electrical energy, a power plant unit and a WHRS (waste heats recovery system) were made to supply electrical energy to the cement plant area. PT. Cemindo Gemilang and the Power Plant rely heavily on electric motors, almost all of which operate using electric motors. The electric motor is a single-phase or three-phase type with a voltage of 11 KV, 6.6 KV or 400 volts. When all generating units operate, all electric motors that play an essential role will continue to be active so that damage is often caused by operation and service life therefore in the power plant department, and there is an electrical and mechanical maintenance division to maintain the continuity of the power plant operational system. This study's aim 1). Explain about electric motors, 2). Explain the definition of the water jet pump, 3). Explain how the water jet pump works 4). Explain the components used in electric motors and their repair and maintenance.
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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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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.

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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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Tesi sul tema "Electric motors"

1

Larsson, Martin. "Electric Motors for Vehicle Propulsion". Thesis, Linköpings universitet, Fordonssystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-103907.

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This work is intended to contribute with knowledge to the area of electic motorsfor propulsion in the vehicle industry. This is done by first studying the differentelectric motors available, the motors suitable for vehicle propulsion are then dividedinto four different types to be studied separately. These four types are thedirect current, induction, permanent magnet and switched reluctance motors. Thedesign and construction are then studied to understand how the different typesdiffer from each other and which differences that are of importance when it comesto vehicle propulsion. Since the amount of available data about different electricmotors turned out to be small a tool was developed to use for collecting data fromthe sources available which can be for instance product sheets or articles with informationabout electric motors. This tool was then used to collect data that wasused to create models for the different motor types. The created motor models foreach motor type could then be used for simulating vehicles to investigate how thespecific motor is suited for different vehicles and applications. The work also containsa summary of different electric motor comparison studies which makes it agood source of information during motor type selection in the process of designingan electric vehicle.
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Yang, Sichao. "In-wheel motors for electric vehicles". Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/4054.

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The in-wheel motor technology as the source of traction for electric vehicles has been researched recently because it is compact and ease-to-integrate. The motor is housed in the wheel. Since the room for the motor is tightly defined by the size of the wheel and there is no gearing system, the motor must have a high torque density to drive the vehicle directly and a high efficiency to keep cool. The existing motor uses a surface-mounted magnet topology. To make it more cost-competitive, the magnet material needs to be reduced while maintaining the torque performance at the rated operating condition. It is the motive of this Ph.D. research. The thesis starts with a brief introduction on the background of the electric vehicle. Then the major challenges of the in-wheel motor technology are summarised. With the derived specifications, an induction machine and a switched reluctance machine are then simulated and analysed. Still, the permanent magnet synchronous machine is proved to have the highest torque density. Change from surface-mounted to interior topology, six new magnet topologies are investigated. The V-shaped interior magnet topology shows superior torque-to-magnet-mass ratio and is easy-to-manufacture. It gives 96% torque while using 56% of the magnet mass compared to the existing motor due to the assist from the additional reluctance torque and the lower magnetic circuit reluctance. The key to use less magnet mass while avoiding the demagnetisation is the front iron shielding effect. The analytical explanation on the better resistance to demagnetisation in the V-shaped motor is provided. The magnet loss mechanism is discussed for proper segmentation. Detailed design adjustments are made to compromise between the torque-to-magnet-mass ratio and the manufactural practicality. Issues regarding to lower mechanical rigidity occurred in initial assembly of the prototype and solutions are proposed. Followed by successful assembly, experimental tests were conducted and results show good agreement with the simulation. A specific form of torque ripple is found in the V-shaped motor and occurs generally in all fractional-slot concentrated-winding machines with saliency. It is explained by an analytical model. This model is also extended to explain the generally lower reluctance torque in vi fractional-slot concentrated-winding machines. Potential design improvements are suggested and simulated for future versions.
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Lazhenko, A. S. "Electric Motors in Lives of People". Thesis, Київський національний університет технологій та дизайну, 2017. https://er.knutd.edu.ua/handle/123456789/8365.

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Groen, Benjamin Carson. "Investigation of DC Motors for Electric and Hybrid Electric Motor Vehicle Applications Using an Infinitely Variable Transmission". BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2696.

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Since the early 1900's demand for fuel efficient vehicles has motivated the development of electric and hybrid electric vehicles. Unfortunately, some components used in these vehicles are expensive and complex. AC motors, complex electronic controllers and complex battery management systems are currently used in electric (EV) and hybrid vehicles. This research examines various motors and speed control methods in an attempt to help designers identify which motors would be best suited for an EV powertrain application. The feasibility of using DC motors coupled with an Infinitely Variable Transmission (IVT), to obtain an innovative new electric or hybrid electric powertrain is also presented. The results of this research include an extensive review of the many motor types including a comparison chart and motor hierarchy. An experiment was designed and built to test motorspeed control methods. Testing with two DC separately-excited motors and a differential as an IVT was also conducted. These tests revealed that field weakening appears to be a viable low-costspeed-control method. Testing of these motors, coupled with an IVT revealed that the output of a differential or planetary gear set can be controlled by varying the speed of the inputs. Combining this information in a product development mentality led to the concept of using one DC motor as a power or traction motor while another motor acts as a speed controller, with the method of speedcontrol on the speed control motor being field weakening. This concept allows most of the power to be delivered at an efficient rate with a simple form of speed control. This concept may also eliminate the need for expensive, complex electronic motor controllers. This approach could be used to improve the safety and reduce battery management requirements by lowering the operating voltage of the entire system.
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French, C. D. "Real-time control of electric drives". Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294867.

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Zhang, Ruoju, e 張若菊. "A new PM hybrid motor drive for electric vehicles". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31472849.

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Govindsamy, Matthew. "Sensorless speed estimation in three phase induction motors". Thesis, Port Elizabeth Technikon, 2002. http://hdl.handle.net/10948/139.

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This thesis proposes a technique to determine and improve the performance of a sensorless speed estimator for an induction motor based on Motor Current Signature Analysis (MCSA). The theoretical concepts underlying the parameter based observer are developed first and then the model of the observer is built using Simulink. The observer is developed based on Model Reference Adaptive System (MRAS). The dynamic performance of the observer and its behavior due to variation of machine parameters is studied. The error in speed estimated using this observer is shown and the ability of MCSA to retune the rotor speed from the stator current spectrum. The spectrum estimation technique has been implemented using a software routine in Matlab. Both the observer and MCSA techniques were implemented practically on an induction motor. The performance of the combined sensorless speed estimation system was tested and verified.
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Bassham, Bobby A. "An evaluation of electric motors for ship propulsion". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FBassham.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, June 2003.
Thesis advisor(s): Robert Ashton, Todd Weatherford. Includes bibliographical references (p. 93-96). Also available online.
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Claassens, Andries Johannes. "Transient modelling of induction motors in a petrochemical plant using Matlab". Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/20432.

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Thesis (MScIng)--University of Stellenbosch, 2008.
ENGLISH ABSTRACT: The behaviour of induction motors at a petrochemical plant under transient conditions was investigated with the view to improve plant immunity to voltage fluctuations. The benefits of using a phase-variable induction motor model rather than the simpler d-q models usually employed are investigated. A simplified model of the plant electrical distribution system was derived. Phase variable and d-q induction motor models were implemented as well as a synchronous generator model. Practical considerations precluded the use of commercial software for the simulation of transient conditions and a basic simulation program was developed using Matlab to evaluate the behaviour of the dynamic machine models and distribution system. It was established that the configuration of the installed re-acceleration system can be optimised to reduce the possibility of plant outages as a result of voltage fluctuations. It was found that the use of more detailed induction machine models provide valuable insight into system behaviour and is justified if accurate motor parameters are available or can be estimated. The simplified plant model yielded useful results and enabled the identification of incorrect system data. The investigation showed that Matlab is suitable for the rapid development of a basic transient simulation program that can be used to study the behaviour of different interconnected dynamic machine models.
AFRIKAANSE OPSOMMING: Die gedrag van induksiemotors in 'n petrochemiese aanleg onder oorgangstoestande is ondersoek ten einde die immuniteit van die aanleg vir spanningsfluktuasies te verbeter. Die voordele van die gebruik van 'n fase-veranderlike induksiemotor model eerder as die eenvoudiger d-q modelle wat normaalweg gebruik word is ondersoek. 'n Vereenvoudigde model van die aanleg se elektriese distribusiestelsel is afgelei. Faseveranderlike en d-q induksiemotor modelle is geimplementeer sowel as 'n sinkroongenerator model. Praktiese oorwegings het die gebruik van kommersiële programmatuur vir die simulasie van oorgangstoestande verhoed en 'n basiese program is in Matlab ontwikkel om die gedrag dinamiese masjienmodelle en die distribusiestelsel te evalueer. Daar is vasgestel dat die konfigurasie van die geinstalleerde herversnellerstelsel geoptimeer kan word om die moontlikheid van aanleg onderbrekings as gevolg van spanningsfluktuasies te verminder. Daar is gevind dat die gebruik van meer gedetaileerde induksiemasjien modelle waardevolle insig in die gedrag van die stelsel lewer en geregverdig is indien akkurate motorparameters beskikbaar is of afgeskat kan word. Die vereenvoudigde model van die aanleg het bruikbare resultate gelewer en die het die identifikasie van foutiewe stelseldata moontlik gemaak. Die ondersoek het getoon dat Matlab geskik is vir die snelle ontwikkeling van 'n basiese oorgangsimulasie program wat gebruik kan word om die gedrag van verskillende gekoppelde dinamiese masjienemodelle te bestudeer.
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Elvestad, Eirik. "Implementation of Permanent Magnet Motors in Electric Vehicles". Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9743.

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This thesis has studied permanent magnet motors in electric vehicles (EVs) under the assumption that they are tractable due to a low weight and high compactness. The implementation has been investigated through a case study, which resulted in an EV simulation model. The model contains a maximal torque per ampere and a closed-loop field weakening controller. Abstract Faults are a special concern in permanent magnet motors. Fault sources and faulted behavior are addressed separately. The EV model was used to simulate faulted behavior. Abstract Two passive fault measures are suggested as the most attractive for propulsion purpose motors; these are shutting down the inverter and imposing a balanced short to the machine terminals. The balanced three phase short circuit showed a considerable transient behavior not seen during inverter shutdown. This results in an increased requirement to the inverter rating using the balanced short. Also, demagnetization risk of rotor magnets is higher under the balanced short. Abstract The maximal braking torque during inverter shutdown was high for the simulation model, and exceeded the braking torque of any fault. This concern led to a mathematical examination of the inverter shutdown, resulting in two equations that may be of use during design. The resulting equations are based on simplifications done in the literature, and show the relationship of the balanced short to the inverter shutdown.

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Libri sul tema "Electric motors"

1

Electric motors and motor controls. Albany: Delmar Publishers, 1995.

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2

Electric motors and motor controls. 2a ed. Clifton Park, NY: Thomson Delmar Learning, 2007.

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3

Cox, V. J. Electric motors. Hemel Hempstead: Nexus Special Interests, 1998.

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4

1929-, Miller Rex, a cura di. Electric motors. 5a ed. New York: Macmillan Pub. Co., 1991.

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5

R, Miller Mark, e Anderson Edwin P. 1895-, a cura di. Electric motors. 6a ed. Indianapolis, IN: Wiley Pub., 2004.

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Mazur, Glen. Troubleshooting electric motors. Homewood, IL: American Technical Publishers, 1993.

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7

Babington, Mary F., Matthew A. Carle, Eric A. Neumore e Laurel Brooks. Electric motors & generators. Cleveland: Freedonia Group, 1999.

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8

Keljik, Jeff. Electric motors and motor controls: Instructor's guide. 2a ed. Clifton Park, NY: Thomson Delmar Learning, 2007.

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9

1923-, Engelmann Richard H., e Middendorf William H, a cura di. Handbook of electric motors. New York: M. Dekker, 1995.

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10

Modern electric/electronic motors. Englewood Cliffs, N.J: Prentice Hall, 1990.

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Capitoli di libri sul tema "Electric motors"

1

Jufer, Marcel. "Motors". In Electric Drives, 41–86. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118622735.ch4.

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Jufer, Marcel. "Motors". In Electric Drives, 87–100. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118622735.ch5.

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Paluszek, Michael, e Stephanie Thomas. "Electric Motors". In MATLAB Recipes, 177–203. Berkeley, CA: Apress, 2015. http://dx.doi.org/10.1007/978-1-4842-0559-4_8.

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Roth, Lawrence O., e Harry L. Field. "Electric Motors". In An Introduction to Agricultural Engineering: A Problem-Solving Approach, 323–30. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-1425-7_28.

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Roth, Lawrence O., e Harry L. Field. "Electric Motors". In Introduction to Agricultural Engineering, 323–30. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3594-2_28.

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Field, Harry L., e John M. Long. "Electric Motors". In Introduction to Agricultural Engineering Technology, 391–99. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69679-9_28.

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Lemmens, Joris, e Wim Deprez. "Electric Motors". In Electrical Energy Efficiency, 189–228. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781119990048.ch7.

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Vepa, Ranjan. "Electric Motors". In Electric Aircraft Dynamics, 11–28. First edition. | Boca Raton, FL : CRC Press, 2020.: CRC Press, 2020. http://dx.doi.org/10.1201/9780429202315-2.

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Franchi, Claiton Moro. "Electric Motors". In Electrical Machine Drives, 1–37. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, 2018.: CRC Press, 2019. http://dx.doi.org/10.1201/b22314-1.

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Kitcher, Christopher. "Electric motors". In Electricians’ On-Site Companion, 136–41. New York, NY : Routledge, 2018.: Routledge, 2017. http://dx.doi.org/10.1201/9781315544571-17.

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Atti di convegni sul tema "Electric motors"

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Raja, Selvakumar, Sasikumar Nandagopal, S. Jenoris Muthiya, Sathish Kumar R, Nakandhrakumar R. S PhD, Bilu JOHN, Abdul Umar, Aadithian Sankar, Karri Tyaga Raju e Kaviarasan Balasubramaniam. "Thermal Analysis of an Electric Motor in an Electric Vehicle". In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0532.

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<div class="section abstract"><div class="htmlview paragraph">Parametric thermal analysis of permanent magnet synchronous motor by considering real time driving cycle is presented. As driving motors of electric vehicle, permanent magnet motors exhibit high efficiency and high power density. However, they are susceptible to suffer irreversible demagnetization and insulation failure of coils under severe thermal condition. Therefore, it is essential to precisely predict heat losses and temperature distribution in driving motors under real time driving cycle. The thermal behavior of the driving motor is analyzed by means of thermal parametric methods. Here we are using simulation software to measure the temperature distribution and heat losses in the Driving motor, when an electric motor is operated for a certain amount of time the motor produces heat because of the Heat produced by the motor the performance, efficiency and reliability of the motor is affected.</div><div class="htmlview paragraph">Performing the Analysis method on the Motor that is designed according to the parameters such as power output, Torque, Efficiency, Reliability, and Sustainability. Design Required Cooling System for the Electric Motor for EV application. By Designing an Appropriate Cooling System we can Easily Dissipate the Heat that is produced by the motor and we can also see improvement in performance, Sustainability, Torque Efficiency and other parameters that are affected by the Heat produced by the Electric motor.</div></div>
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Adams, Robert, Jinjiang Xiao, Michael Cross e Max Deffenbaugh. "Switched Reluctance Motor for Electric Submersible Pump". In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204720-ms.

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Abstract Switched reluctance motors may be advantageous when used as the primary motor for an electric submersible pump system. They are less susceptible to jamming failures due to their high starting torque and ability to reverse direction. Driving these motors requires well-timed pulse waveforms and precise control of the motor based on its rotational position. It is demonstrated that the pulses required to drive switched reluctance motors can still be applied over along cable lengths. Additionally, the current at the surface can be used to monitor and control the operation of the motor downhole, even with long cable lengths separating the surface power source and downhole motor.
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Zhang, Guoguang, Hui Zhang, Junmin Wang, Hai Yu e Roger Graaf. "Actuator Fault Sensitivity Analysis for In-Wheel Motor Electric Ground Vehicle With Active Steering System". In ASME 2014 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/dscc2014-6035.

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This paper presents the sensitivity analyses on vehicle motions with regard to faults of in-wheel motors and steering motor for an electric ground vehicle (EGV) with independently actuated in-wheel rear motors. Based on the vehicle model, direct method is applied to determine, to what extent, that different actuator faults affect vehicle motions such as the longitudinal velocity, lateral velocity, and yaw rate. For motion indices like vehicle sideslip angle and longitudinal acceleration, linearizations around equilibrium points are conducted and their sensitivities to actuator faults are analyzed. Results show that all mentioned vehicle motions are more sensitive to the fault of steering motor than that of in-wheel motors. In addition, the effects on vehicle motions due to four types of faults, i.e. additive, loss-of-effectiveness, time-varying-gain and stuck-at-fixed-level faults, are examined through CarSim® simulations and vehicle experiments under a representative maneuver.
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Hajek, Vitezslav, Martin Mach e Leos Kuchar. "Special small electric motors". In 2015 International Conference on Electrical Drives and Power Electronics (EDPE). IEEE, 2015. http://dx.doi.org/10.1109/edpe.2015.7325309.

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"Electric Flight Technology". In Default for White Papers. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2017. http://dx.doi.org/10.4271/wp-0002.

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<div class="section abstract">The environmental impact of hydrocarbon-burning aircraft, both from the perspective of gas emissions and that of noise, is one of the main motivations for the move to electric propulsion. The added benefit from this shift to electric propulsion is that it has resulted in lowering the costs of electrical components such as motors, power electronic (PE) circuits, and batteries that are essential to this technology. This white paper seeks to explore the history, architecture, electrical components, and future trends of electric flight technology.</div>
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Williams, Logan T. "Performance and Selection of Brushless DC Motors for Miniature Hydraulic Powertrains". In BATH/ASME 2020 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fpmc2020-2761.

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Abstract Increased interest in battery-powered hydraulic quadrupeds at the US Naval Research Laboratory has created demand for compact hydraulic power units with electric prime movers. Brushless DC (BLDC) motors are compact, high-power systems that can provide the shaft power for a hydraulic pump. The remote-control hobby industry offers a wide range of low-cost BLDC motors that can be utilized for miniature, power-dense hydraulic powertrains. However, most of these motors are sold with minimal specifications that prevent accurate prediction of the motor performance, impeding precise motor selection. An analytical model has been developed to provide an upper bound on a motor’s performance based on the motor constant and the motor phase impedance. Experimental performance of multiple motors are used to validate the model and demonstrate its efficacy for motor selection.
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Hosek, Martin, Jayaraman Krishnasamy, Sripati Sah e Taylor Bashaw. "Spray-Formed Hybrid-Field Electric Motor". In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59339.

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A new class of electric motors with hybrid-field topology is introduced. Departing from conventional radial- or axial-field designs, the motors feature three-dimensional magnetic flux paths, which are enabled by an advanced isotropic soft magnetic material produced by a unique additive-manufacturing process based on spray forming. The motors provide considerably higher power output (40% higher power density) and improved energy efficiency (up to 15% lower losses) compared to the state of the art. A prototype spray-formed hybrid-field motor has been designed and constructed, and the size, power and efficiency benefits have been demonstrated.
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Tanaka, Yutaka, Sayako Sakama, Kazuo Nakano e Hiroshi Kosodo. "Comparative Study on Dynamic Characteristics of Hydraulic, Pneumatic and Electric Motors". In ASME/BATH 2013 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fpmc2013-4459.

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Hydraulic or pneumatic motors are replacing electromagnetic servomotors in many applications. It is important for engineers and designers to select adequate actuators in given servo applications. In a previous paper, Nakano had predicted the performance of future electric or hydraulic motors after that there have been many advances in actuators. In this paper the performance of hydraulic and pneumatic motors, and electric AC servo and DC motors has been calculated, surveyed, and evaluated on the basis of specifications listed for them in current catalogs and nonpublic data. We selected 765 different kinds of electric motors and 404 different kinds of fluid power motors available in the market. Power density, torque–inertia ratio, power rate, and power rate density were selected as the performance indexes for comparison. Rated power and torque were found to be nearly proportional to motor mass and moment of inertia, respectively. The electromagnetic motors have developed high performance with large rated torque and a smaller moment of inertia. The newly developed small-size hydraulic motor was also included in the performance index, and its characteristics were plotted. The compact size of fluid power actuators has great potential for power rating or quick response.
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Zhang, Yan, Lanchuan Zhang, Kejun Jiang e Wenyu Ji. "Motor's Braking Force of Electric Vehicle with Double Motors". In 3rd International Conference on Mechatronics, Robotics and Automation. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icmra-15.2015.69.

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Escobar, Katherine, Maxim Radov e Cristina Vasilache. "Defining a New Era for Induction Motors". In SPE Gulf Coast Section Electric Submersible Pumps Symposium. SPE, 2021. http://dx.doi.org/10.2118/204511-ms.

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Abstract Induction motors have been widely used in the ESP industry for decades. Motor operation, control, and optimization are well-understood topics among providers and final consumers, who strive to get the most efficient electrical machine in the well to reduce power consumption and, consequently, operating expenses. This paper presents a case study for a newly redesigned induction motor and changes made in its design and construction. A field trial of two wells deployed with the new motor and a comparison with a well deployed with the standard motor are described. Field and simulated data are used to analyze the electrical performance and power consumption. The test results included are from wells in the US Rocky Mountains. Additionally, some of the motors in this test were manufactured with a high-performance thermally conductive and electrically insulative windings encapsulation, which is further discussed in the paper. The increased efficiency was achieved through an optimized electromagnetic design that helped to reduce the motor total losses. Efficiency gains were measured against standard motor design through laboratory testing, and the result showed 2.2 to 2.5% higher efficiency for the newly developed motor. With the higher power density, the motor length was shortened from 20 to 25% during the field trials, reducing the total length of the string. In addition to the optimization of motor length, the newly redesigned motor generates a lower core temperature when compared to a previous motor of the same length and subjected to the same load. This fact allows the motor to be loaded up to 25% above its nameplate rating, improving the horsepower rating and opening a new era for highly flexible induction motors. The gathered results showed that the newly redesigned motor provides higher efficiency and lower total electrical power consumption compared to the standard induction motor that would have been used in those applications. Both results were evidenced in controlled laboratory testing and field trials. A further comparison of similar ESP equipment configuration running with former motor versions is also provided, as well as design comparison cases between the expected results of the previous and the newly designed motor.
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Rapporti di organizzazioni sul tema "Electric motors"

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Rasinski, Timothy. NVLAP efficiency of electric motors. Gaithersburg, MD: National Institute of Standards and Technology, aprile 2020. http://dx.doi.org/10.6028/nist.hb.150-10-2020.

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Shoykhet, B., R. Schiferl, R. Duckworth, C. M. Rey, S. W. Schwenterly e M. J. Gouge. Development of Ulta-Efficient Electric Motors. Office of Scientific and Technical Information (OSTI), maggio 2008. http://dx.doi.org/10.2172/973932.

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3

Batzel, Todd D. Sensorless Electric Drive for Permanent Magnet Synchronous Motors. Fort Belvoir, VA: Defense Technical Information Center, ottobre 1999. http://dx.doi.org/10.21236/ada370401.

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4

Narumanchi, S., K. Bennion, D. DeVoto, G. Moreno, J. Rugh e S. Waye. Advanced Power Electronics and Electric Motors Annual Report -- 2013. Office of Scientific and Technical Information (OSTI), gennaio 2015. http://dx.doi.org/10.2172/1169768.

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5

Galowin, Lawrence S., Walter J, Jr Rossiter e Wiley A. Hall. National voluntary laboratory accreditation program: efficiency of electric motors. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.hb.150-10.

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Galowin, Lawrence S., Walter J, Jr Rossiter e Wiley A. Hall. National voluntary laboratory accreditation program: efficiency of electric motors. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.hb.150-10-1995.

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Langhe, Deepak, Lei Zhu, Michael Brubaker e Laura Marlino. Multilayered Film Capacitors for Advanced Power Electronics and Electric Motors for Electric Traction Drives. Office of Scientific and Technical Information (OSTI), dicembre 2017. http://dx.doi.org/10.2172/1492686.

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Rogers, Susan A. FY2011 Advanced Power Electronics and Electric Motors Annual Progress Report. Office of Scientific and Technical Information (OSTI), gennaio 2012. http://dx.doi.org/10.2172/1219525.

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Rogers, Susan A. FY2012 Advanced Power Electronics and Electric Motors Annual Progress Report. Office of Scientific and Technical Information (OSTI), marzo 2013. http://dx.doi.org/10.2172/1219997.

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Villaran, M., e M. Subudhi. Aging assessment of large electric motors in nuclear power plants. Office of Scientific and Technical Information (OSTI), marzo 1996. http://dx.doi.org/10.2172/221038.

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