Готові списки джерел за темами / Rolling Rotor Motor

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Добірка наукової літератури з теми "Rolling Rotor Motor"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Rolling Rotor Motor"

Pavlenko, Tatyana, Оleksandr Petrenko, Viacheslav Shavkun, and Ivan Aharkov. "Development of a mathematical model of the trolleybus steering system using a rolling rotor switched reluctance motor." EUREKA: Physics and Engineering, no. 4 (July 23, 2021): 63–75. http://dx.doi.org/10.21303/2461-4262.2021.001938.

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Анотація:

An important part of the overall task of social and economic development of many developed countries is the creation of a unique transport infrastructure or improvement of transport services for the population. The cumulative solution to many problems is to improve the quality and reliability of elements and equipment in any vehicle design. This determines its efficient operation and the safety of passengers. A common urban electric transport in megacities is a trolleybus, the reliability of which depends on individual components and assemblies, power supply systems and traffic control. But this type of transport requires modern scientific and technical solutions for the design of individual components and assemblies, for example, steering, which is directly related to the safe and comfortable transportation of passengers. An innovative technical solution has been proposed that will increase the energy efficiency of the trolleybus steering system through the use of an electric power steering based on a rolling rotor electric motor. The analysis of the design is carried out and the principle of control of the rolling rotor motor is determined. Functional diagrams of the components of the trolleybus steering system with an electric power steering based on a rolling rotor motor are developed. The electromagnetic and mechanical connections of the motor with the rolling rotor are determined and mathematically described. Factors affecting the steering system when turning the steered wheels are reasoned. A mathematical model of a trolleybus steering system with an electric booster based on an electric rolling rotor motor has been developed. The mathematical model is based on the differential equations of the electrical and mechanical parts. Algebraic equations were used to characterize the electromagnetic connections of the rolling rotor motor. The proposed solution will allow simulating dynamic processes in the trolleybus steering system and evaluating the results. Determination of the efficiency of the steering system was carried out by comparative analysis of the following factors: the control action created by the driver, the condition of the road surface, dynamic and transient electromechanical processes of the system, and the like

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Aharkov, I. "SIMULATION OF TROLLEBUS STEERING SYSTEM WITH ELECTRIC POWER STEERING BASED ON ROLLING ROTOR SWITCHED RELUCTANCE MOTOR." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies" 1, no. 38 (December 24, 2021): 88–106. http://dx.doi.org/10.32703/2617-9040-2021-38-88-8.

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Анотація:

The analysis of power steering which used on modern rolling stock is carried out. Their main shortcomings are identified. Given the requirements for the steering of trolleybuses, a solution to increase its efficiency is proposed. Based on the developed mathematical model and functional diagrams of the trolleybus steering system with a electric power steering based on rolling rotor switched reluctance motor, a simulation model of trolleybus steering was created using the Matlab Simulink package. The peculiarity of the simulation model is taking into account the mass and size characteristics of the rolling stock, the parameters of the suspension of the steered axle, the impact of the road surface and the speed of the trolleybus, changes in the parameters of the electric motor magnetic system during operation. The rolling rotor switched reluctance motor which is offered for use as the electric power steering of the LAZ E183D1 trolleybus is calculated. The calculation of the magnetic system of the engine by the finite element method with the subsequent approximation of the obtained results is carried out. With the help of the developed simulation model the simulation of the trolleybus steering system with electric power steering based on rolling rotor switched reluctance motor was performed. Time diagrams of transients in the trolleybus steering system are obtained and their processing and analysis are carried out.

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Yang, Yong Ming, Jiu Chuan Chen, Feng Wen Cheng, and Jun Zhao. "Study on the Forming Mechanism for Second Step on Hollow Rotor Shaft by 4-Roll Cross Wedge Rolling." Applied Mechanics and Materials 288 (February 2013): 271–75. http://dx.doi.org/10.4028/www.scientific.net/amm.288.271.

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Анотація:

It is very important for accurately grasping stress, strain, and metal flow during the hollow motor shaft rolling, and it is also foundation of forming regularity, rolling force and energy parameter. The cross wedge rolling process of hollow motor shaft was simulated through rigid-plastic finite element software deform-3D. According to the simulation results, the distribution of internal stress, strain field inside the second step of the motor shaft had been obtained, revealed the metal flow ruler for the second step during forming process and it could effected on the metal flow ruler for the first step.

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Polevskii, V. I., and A. V. Sapsalev. "Superhigh-vacuum linear asynchronous motor with rolling rotor and magnetic-flux concentrators." Russian Engineering Research 29, no. 3 (March 2009): 230–33. http://dx.doi.org/10.3103/s1068798x09030022.

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Khamidov, O. R., and A. V. Grishchenko. "Locomotive asynchronous traction motor rolling bearing fault detection based on current intelligent methods." Journal of Physics: Conference Series 2131, no. 4 (December 1, 2021): 042084. http://dx.doi.org/10.1088/1742-6596/2131/4/042084.

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Анотація:

Abstract The paper is devoted to current issues of locomotive asynchronous traction motor (ATEM) fault detection using neural networks. Developed sophisticated intelligent methods for monitoring and inspecting the technical condition of ATE bearings. Current absorption spectra are analysed to assess the technical condition of the induction bearing units. The mechanical vibration frequencies of a squirrel cage induction motor are presented. The method of artificial neural networks which are universal approximators and can effectively and efficiently solve problems of monitoring and diagnostics of technical condition of locomotive induction traction motors is applied. A neural network model and framework for monitoring the technical condition of ATED bearings has been developed. They are based on rules and user-provided facts to recognise the situation, make a diagnosis, formulate a solution or make a recommendation. The main failures of the bearing units of squirrel cage ATED are analysed. A methodology has been developed to build a neural network model of the ATED. The structure and architecture of the artificial neural network is defined. An experimental research has been conducted. The results enable the determination of bearing faults in asynchronous traction motors with squirrel cage rotor.

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Grishchenko, A. V., and M. A. Shrajber. "Simulation of thermal processes in asynchronous traction electric motor of a locomotive." Journal of Physics: Conference Series 2131, no. 4 (December 1, 2021): 042088. http://dx.doi.org/10.1088/1742-6596/2131/4/042088.

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Abstract This article analyzes the problem of increasing the reliability of AC traction electric machines installed on traction rolling stock. In the course of the study, a finite element model of thermal processes was built, and the thermal state of an asynchronous traction motor (ATED) of a diesel locomotive was studied in the Solid Works program. The basic method for studying thermal processes in ATED was the finite element method (FEM), as well as the basic equations of heat transfer and the theory of heating a multicomponent solid. The constructed finite element model of the ATED rotor of a diesel locomotive makes it possible to determine the dependence of the temperature values of the rotor elements on the current flowing through them. The obtained values of the temperature distribution of the ATED squirrel-cage rotor are recommended to be taken into account in the design, manufacture and testing of AC electric machines of diesel locomotives.

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Bifeng, Zhou, Tang Guoning, and Luo Yiping. "Dynamics modeling and analysis of the permanent-magnet synchronous motors bearing-rotor-magnetic field under rotor demagnetize." Advances in Mechanical Engineering 13, no. 6 (June 2021): 168781402110254. http://dx.doi.org/10.1177/16878140211025413.

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Анотація:

For the phenomenon of rotor demagnetization of Permanent Magnet Synchronous Motor(PMSM), studying the dynamic modeling and analysis of demagnetization rotor. Firstly, considering the unbalanced magnetic pulling (UMP) of the rotor under the demagnetization and the nonlinear Hertz contact generated by the rolling bearing, the double rectangular coordinate system of the stator and rotor is constructed, and the mathematical model of the unbalanced magnetic pull UMP is constructed with the rectangular coordinate as the variable. Then, the dynamics Jeffcott model of the bearing-rotor- magnetic fields coupling system in the condition of demagnetization is established. Based on this, the demagnetization status of permanent magnet in PMSM is described from three aspects: (1) rotor offset caused by demagnetization, (2) demagnetization angle, (3) decrease of air-gap MMF at the demagnetization angle. Through the analysis, it is found that there is a “saddle” point in the bifurcation plots of the rotor system with the change of demagnetization angle. The position of the “saddle” point in the bifurcation plots with the change of demagnetization angle is related to the speed. The research results of this paper provide a theoretical basis for demagnetization quantitative diagnosis and demagnetization vibration control of permanent magnet synchronous motor.

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Єгоров, Андрій Володимирович, Олексій Олександрович Дунєв, Андрій Михайлович Маслєнніков, and Володимир Данилович Юхимчук. "High-torque low-speed electric motor with a rolling rotor, as an alternative to existing gear motors." Bulletin of NTU "Kharkiv Polytechnic Institute" Series: Electrical Machines and Electromechanical Energy Conversion, no. 4 (1329) (April 23, 2019): 83–89. http://dx.doi.org/10.20998/2409-9295.2019.4.12.

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Lingaitis, Leonas Povilas, and Lionginas Liudvinavičius. "ELECTRIC DRIVES OF TRACTION ROLLING STOCKS WITH AC MOTORS." TRANSPORT 21, no. 3 (September 30, 2006): 223–29. http://dx.doi.org/10.3846/16484142.2006.9638070.

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Анотація:

The paper considers the variation of circuit design of the electric drives in traction rolling stocks when traditional DC electric machines are replaced with AC electric machines. Simplified circuit diagrams of the electric drives using electric machines of non‐commutator type are offered. Operational defects of DC traction engines are weighed against some positive characteristics of direct current series excitation in traction engines, determining their extensive use in the electric drives of traction rolling stocks. However, the rapid development of semiconductor devices, e.g. thyristors and IGBT transistors, led to the creation of a great variety of semiconductor inverters. This made it possible to develop an autonomous three‐phase power supply system for diesel locomotives and algorithms for the AC traction motors and to obtain engine characteristics matching the tractive force by using voltage frequency and current inverters. A mathematical justification of the engine torque and tractive force control as well as its particular characteristics is provided. The graphs demonstrating the particular ways of changing the electrical parameters of an asynchronous motor with a squirrel‐cage rotor are also presented.

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Stammler, Matthias, Fabian Schwack, Norbert Bader, Andreas Reuter, and Gerhard Poll. "Friction torque of wind-turbine pitch bearings – comparison of experimental results with available models." Wind Energy Science 3, no. 1 (March 14, 2018): 97–105. http://dx.doi.org/10.5194/wes-3-97-2018.

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Анотація:

Abstract. Pitch bearings of wind turbines are large, grease-lubricated rolling bearings that connect the rotor blades with the rotor hub. They are used to turn the rotor blades to control the power output and/or structural loads of the turbine. Common actuators turning the blades are hydraulic cylinders or electrical motor–gearbox combinations. In order to design pitch actuator systems that are able to turn the blades reliably without imposing an excessive power demand, it is necessary to predict the friction torque of pitch bearings for different operating conditions. In this paper, the results of torque measurements under load are presented and compared to results obtained using different calculation models. The results of this comparison indicate the various sources of friction that should be taken into account for a reliable calculation model.

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Більше джерел

Дисертації з теми "Rolling Rotor Motor"

Наний, Виталий Викторович, та Алексей Александрович Дунев. "Исследование угла нагрузки в двигателях с катящимся ротором". Thesis, Техническият университет – Габрово, 2012. http://repository.kpi.kharkov.ua/handle/KhPI-Press/24434.

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Анотація:

В статье приводиться методики определения зависимости угла нагрузки для двигателя с катящимся ротором от величины эксцентриситета. Исследования проведены на базе сравнения конструкций 8- и 6 пазового двигателей и анализируется влияние его эксцентриситета на реальный угол нагрузки машины. Приводятся результаты полученных исследований в графическом виде и сравниваются максимальные значения полученных углов для 6- и 8-пазовой модели двигателя.
The article presents the methodology for determining the dependence of the load angle for motor with a rolling rotor from eccentricity value. Researches are carried out on the basis of comparison of 8-and 6-slots constructions and influence of its eccentricity on the real load angle is analysed. The results of these researches are graphically presented and maximum values of load angles for 6 - and 8-slot motor models are compared.

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Наний, Виталий Викторович. "Угол нагрузки двигателей с катящимся ротором". Thesis, Техническият университет – Габрово, 2012. http://repository.kpi.kharkov.ua/handle/KhPI-Press/24436.

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Анотація:

В статье приводиться методика определения реального угла нагрузки двигателя с катящимся ротором с помощью компьютерного моделирования магнитного поля двигателя. Дано сравнение 8- и 6-пазовой конструкции двигателя с катящимся ротором с учетом неравномерности его воздушного зазора и анализируется влияние этого зазора на реальный угол нагрузки машины. Приводятся результаты полученных исследований в графическом виде и сравниваются максимальные значения полученных углов для 6- и 8-пазовой модели двигателя.
The article presents a comparison 8 - and 6-slot design of motor with a rolling rotor (MRR) subject to irregular air gap and analyzes the impact of this gap on the real machine load angle. The results of these researches are graphically presented and maximum values of load angles for 6 - and 8-slot motor models are compared.

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Наний, Виталий Викторович, Ф. Палис, Андрей Михайлович Масленников, Алексей Александрович Дунев, Андрей Владимирович Егоров та Владимир Данилович Юхимчук. "Электрические машины с поперечным и аксиальным магнитным полем". Thesis, НТУ "ХПИ", 2013. http://repository.kpi.kharkov.ua/handle/KhPI-Press/25441.

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(11173290), Maryam Alibeik. "Airgap-less Electric Motor." Thesis, 2021.

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Анотація:

This dissertation focuses mainly on the airgap-less electric machine. An extensive literature review has been presented along with a systematic study that included analytical modeling, simulation with both steady-state and trasient analysis, prototype building, and experimental validation. In this type of device, the rotor is allowed to touch the stator at a contact point, which maximizes the internal flux and therefore the electromagnetic torque. A higher torque density motor is proposed in this dissertation due to a reduced reluctance caused by zero airgap situation. A comparison with other high torque density electric ma-chines demonstrates the advantages of the proposed machine. Switched reluctance motor for hybrid vehicle, integrated magnetic gear, induction machines, are some examples of the machines with lower torque density than the airgap-less electric machine. This machine will maximize the generated torque allowing these type of machines to be competitive in applications where hydraulic motors are prevalent, i.e., low-speed and high-torque requirements. Hydraulic motor systems face two major problems with their braking system and with low efficiency due to a large number of energy conversion stages (i.e., motor-pump, hydraulic connections and the hydraulic motor itself). The proposed electric motor, unlike hydraulic motors, converts electrical energy directly to mechanical energy with no extra braking system necessary and with higher efficiency. The evolution of the airgap-less electric machine from three poles to 9 bi-poles is discussed in this dissertation. The modeling of this machine with a minimum number of poles is discussed before a generalization is presented. The simulation and analysis of the airgap-less electric motor has been done using Euler integration method as well as Runge Kutta 4th order integration method due to its higher precision. A proof-of-concept electric machine with nine magnetic bipoles is built to validate the theoretical assumptions.

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Частини книг з теми "Rolling Rotor Motor"

Pravin Renold, A., and B. Venkatalakshmi. "IoT-Based Decision Support System for Health Monitoring of Induction Motors." In Emerging Trends in Wireless Sensor Networks [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.103727.

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Анотація:

An electrical motor is a common device that is used for a variety of electrical purposes. Because of their wide range of applications, motors that are both reliable and long-lasting are in high demand. Motors are prone to a variety of faults, including rotor bar breaking faults, short turn faults, bearing outrace faults, and so on. Unexpected faults or failures in these motors reduce workplace productivity. The time it takes to resolve the issues reduces the organization’s profit. Bearing failures account for approximately 42% of all faults. Due to continuous operation, the shape of the majority of electrical motors with rolling bearings becomes disproportional. This causes the motor’s elastic limit to be exceeded, as well as fractures, vibrations, and a rise in temperature. A good solution is to switch from scheduled maintenance to predictive maintenance, which is based on monitoring the motor’s operating condition. This chapter proposes an Internet of Things (IoT)-based solution that continuously monitors and records the vibration from the induction motor. A decision support system analyzes the impact of vibration using log data and the Naïve Bayes classifier. The proposed decision support system detects the critical level of vibration and notifies the user of the motor’s abnormal working condition.

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Тези доповідей конференцій з теми "Rolling Rotor Motor"

Franke, Marco, Oliver Punk, Heike Mrech, and Ulrich Schmucker. "Electrical actuation of a Rolling Rotor Switched Reluctance Motor." In 2011 34th International Spring Seminar on Electronics Technology (ISSE). IEEE, 2011. http://dx.doi.org/10.1109/isse.2011.6053905.

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Franke, Marco, Michael Brutscheck, and Ulrich Schmucker. "Modeling and simulation of a rolling rotor switched reluctance motor." In 2009 32nd International Spring Seminar on Electronics Technology (ISSE). IEEE, 2009. http://dx.doi.org/10.1109/isse.2009.5207002.

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Walton, James F., Michael J. Tomaszewski, and H. Heshmat. "The Role of High Performance Foil Bearings in Advanced, Oil-Free, High-Speed Motor Driven Compressors." In ASME 2003 1st International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2003. http://dx.doi.org/10.1115/fuelcell2003-1747.

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Анотація:

The demand for high power density, reliable, low maintenance, oil-free turbomachinery imposes significant demands on the bearing system. The full benefits of high speed, motor driven machines, for example are realized at speeds exceeding the capabilities of rolling element bearings. The high speeds, and requirement for oil-free operation in fuel cell applications also make conventional liquid lubricated bearings an undesirable alternative. The modern, oil-free foil bearing provides an excellent alternative, with its low power loss, damping for smooth high-speed operation and shock tolerance, elevated temperature capability and long maintenance free life. In this paper, the application of modern foil bearings to two different high-speed, oil-free compressors is discussed. In each application, foil bearings support a multi-component rotor operating at speeds above 70,000 RPM. Stable and reliable operation over the full speed range is demonstrated in each case. These applications also required low bearing start-up torque for compatibility with the torque characteristics of the integral motor. This work discusses the rotor bearing system design, the development program approach, and the results of testing to date.

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Swanson, E. E., H. Heshmat, and J. S. Shin. "The Role of High Performance Foil Bearings in an Advanced, Oil-Free, Integral Permanent Magnet Motor Driven, High-Speed Turbo-Compressor Operating Above the First Bending Critical Speed." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30579.

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Анотація:

The demand for high power density, reliable, low maintenance, oil-free turbomachinery imposes significant demands on the bearing system. The full benefits of high speed, permanent magnet driven machines, for example are realized at speeds exceeding the capabilities of rolling element bearings. The high speeds, and a desire for oil-free operation also make conventional liquid lubricated bearings an undesirable alternative. The modern, oil-free foil bearing provides an excellent alternative, providing low power loss, adequate damping for supercritical operation, tolerance of elevated temperatures and long life. In this paper, the application of modern foil bearings to a high speed, oil-free turbo-compressor is discussed. In this demanding application, foil bearings support a 24 pound, multi-component rotor operating at 70,000 RPM with a bending critical speed of approximately 43,000 RPM. Stable and reliable operation over the full speed range has been demonstrated. This application also required low bearing start-up torque for compatibility with the constant torque characteristic of the integral permanent magnet motor. This work discusses the rotor bearing system design, the development program approach, and the results of testing to date. Data for both a turbine driven configuration, as well as a high speed integral motor driven configuration are presented.

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Diab, Y., F. Ville, C. Changenet, and P. Velex. "Windage Losses in High Speed Gears: Preliminary Experimental and Theoretical Results." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/ptg-48115.

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Анотація:

Power losses in high-speed gears come from the friction between the teeth (sliding and rolling), the lubrication process (dip or jet lubrication), the pumping of a gas-lubricant mixture during the meshing and the losses associated with windage effects. The objective of this paper is to present a number of preliminary experimental and theoretical findings on the prediction of windage losses. Experiments were conducted on a test bench whose principle consists in driving a gear to a given speed and then measuring its deceleration once it has been disconnected from the motor. The transmission between the motor and the rotor is ensured by a friction wheel which also plays the role of speed multiplier. A pneumatic jack either imposes a sufficient contact pressure between the driving wheel and the rotor (transmission of rotation), or is used for separating the parts when the maximum speed is reached. A disk and 4 different gears were tested in the absence of a lubricant at speeds ranging from 0 to 12 000 rpm. Two different theoretical approaches have been developed: i) a dimensional analysis based upon the dimensionless groups of terms which account for the flow characteristics (Reynolds number), the gear geometry (tooth number, pitch diameter, face width) and the speed, ii) a quasi-analytical model considering in detail the fluid flow on the gear faces and inside the teeth. It is found that both approaches give good results in comparison with the experimental evidence and two analytical formulae aimed at predicting windage losses in high-speed gears are proposed.

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Herbst, John D., Matthew T. Caprio, and Robert F. Thelen. "Advanced Locomotive Propulsion System (ALPS) Project Status 2003." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-55082.

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Анотація:

The University of Texas at Austin Center for Electromechanics (UT-CEM) is currently engaged in the development of an Advanced Locomotive Propulsion System (ALPS) for high speed passenger rail locomotives. The project is sponsored by the Federal Railroad Administration as part of the Next Generation High Speed Rail program. The goal of the ALPS project is to demonstrate the feasibility of an advanced locomotive propulsion system with the following features: • Operation up to 150 mph on existing infrastructure; • Acceleration comparable to electric locomotives; • Elimination of $3–5M per mile electrification costs; • Fuel efficient operation with low noise and exhaust emissions. The propulsion system consists of two major elements: a gas turbine prime mover driving a high speed generator and an energy storage flywheel with its associated motor/generator and power conversion equipment. The 2.5 MW high speed generator is a three phase, eight pole synchronous machine designed to directly couple to a 15,000 rpm gas turbine. Power from the turbine/alternator system feeds the locomotive dc bus through a conventional full bridge rectifier. The energy storage flywheel features a graphite/epoxy composite rotor operating on active magnetic bearings and is designed to store 480 MJ at 15,000 rpm. An induction motor/generator and variable frequency motor drive provide the link to the dc bus and are used to control power flow into and out of the flywheel. In addition to design and fabrication of the propulsion system components, the project is also developing a distributed control system with power management algorithms to optimize the hybrid propulsion system. Fabrication of the major components of the propulsion system is nearing completion and some preliminary testing of the flywheel and high speed generator has been completed. After completion of the laboratory testing, the propulsion system will be integrated onto a locomotive platform for rolling demonstrations at the Transportation Technology Center test track in Pueblo, Colorado. The paper presents an overview of the propulsion system operation and control strategies, gives detailed descriptions of the major components, and presents component test results.

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Franke, Marco, Oliver Punk, Michael Brutscheck, and Ulrich Schmucker. "Magnetic equivalent circuit modeling of rolling rotor switched reluctance motors." In 2010 33rd International Spring Seminar on Electronics Technology (ISSE). IEEE, 2010. http://dx.doi.org/10.1109/isse.2010.5547311.

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