Permanent Magnet Synchronous Traction Motor Research Articles

Identification and Analysis of Noise Sources of Permanent Magnet Synchronous Traction Motor with Interior Permanent Magnet

The rapid development of electromobility is placing ever higher demands on new electric motor designs. This results in a gradual reduction in weight with a simultaneous increase in maximum torque. As a result, unfavorable phenomena, such as vibration and noise, can become apparent in the drivetrain. Modeling and evaluation of the acoustic noise sources of a traction motor are particularly important when it is used, for example, as the traction drive of an electric bus, where too high noise levels can have a negative impact on passengers. This article describes methods for analyzing and evaluating the root causes of noise that occurs in permanent magnet traction motors with a rotor in which the magnets have been placed inside the rotor (PMSM IPM). This paper presents an analysis of acoustic noise and forces acting in the air gap of a 240 kW motor with 60 stator slots and 2p = 10 (s60p20) as the number of pole pairs designed for bus and truck drives. To determine the dominant noise sources and evaluate their value, the forces acting in the air gap and their effect on the deflection of the outer surface of the stator yoke were calculated. The natural frequencies of the machine, their frequencies for the entire rotor speed range, and the frequency of vibration of the motor stator were calculated. Based on these data, the sound power level (A-SWL) was calculated at varying motor speeds. MANATEE software (EOMYS, 9, avenue de la Créativité, 59650 Villeneuve d’Ascq—FRANCE) from EOMYS was used to perform vibroacoustic calculations. The analysis results were also subjected to verification on a laboratory bench.

Fuzzy adaptive PID speed controller design for modern elevator traction machine

With the development of the times, elevator has become an essential transportation in our life. In order to meet the comfort of elevator operation, this paper investigates the design of the speed control system of elevator permanent magnet synchronous traction motor in combination with the elevator operation curve. The whole system is based on SVPWM and uses direct torque control combined with fuzzy adaptive PID to achieve accurate control of motor running speed. It includes the input signal module, control module, drive module and feedback module. Firstly, the analysis of each module in the system is completed, and the connection between the modules is established, as well as the control system. Then case studies are carried out on MATLAB/SIMULINK, and the actual running speed curve of the elevator is obtained, and the simulation results are analyzed to verify the stability and reliability of this speed control system and complete the design.

State Estimation and Remaining Useful Life Prediction of PMSTM Based on a Combination of SIR and HSMM

The permanent magnet synchronous traction motor (PMSTM) is the core equipment of urban rail transit. If a PMSTM fails, it will cause serious economic losses and casualties. It is essential to estimate the current health state and predict remaining useful life (RUL) for PMSTMs. Directly obtaining the internal representation of a PMSTM is known to be difficult, and PMSTMs have long service lives. In order to address these drawbacks, a combination of SIR and HSMM based state estimation and RUL prediction method is introduced with the multi-parameter fusion health index (MFHI) as the performance indicator. The proposed method’s advantages over the conventional HSMM method were verified through simulation research and examples. The results show that the proposed state estimation method has small error distribution results, and the RUL prediction method can obtain accurate results. The findings of this study demonstrate that the proposed method may serve as a new and effective technique to estimate a PMSTM’s health state and RUL.

Preface

The 2022 5th International Conference on Power Electronics and Control Engineering (ICPECE 2022) was successfully held in Changchun, China on August 19-21, 2022. ICPECE 2022 promoted the research and developmental activities in “Power Electronics and Control Engineering” as well as scientific information interchange among researchers, engineers, and practitioners working all over the world.We had the honor of having invited Prof. Huamin Yang from Changchun University of Science and Technology, China to serve as our Conference Chair. The conference was composed of keynote speeches and oral presentations, attracting 200 individuals. Firstly, keynote speakers were each allocated 30-45 minutes to hold their speeches. Then in the oral presentations, the excellent papers selected were presented by their authors one by one.During the conference, 15 distinguished professors were invited to address their keynote speeches. Among them, Prof. Yinquan Yu from East China Jiaotong University, China performed a thought-provoking speech on the Advantages of Permanent Magnet Synchronous Traction Motors for High-speed EMUs and Challenges of Intelligent Operation and Maintenance. This research included using multi-type sensor information fusion and artificial intelligent technologies to conduct online healthy monitoring and to reveal faulty mechanism of high-speed EMU traction. Moreover, Prof. Ruqiang Yan from Xi’an Jiaotong University, China addressed a speech on the title AI-Powered Aero-engine Fault Diagnosis. He briefly overviewed deep learning, discussed about the applications of some typical deep network models in intelligent diagnosis and prognosis and a newly designed wavelet kernel deep neural network for aero-engine fault diagnosis. Last but not least, Prof. Yuanchang Zhong from Chongqing University, China made a report on Research on the Regulating Method of Electric Gas Pressure Regulator and Its Remote Monitoring and Controlling System. On the basis of a full study on the existing gas pressure regulating technology and control theory, adopting the building-type gas regulator with the largest demand as research object, this paper put forward a kind of RBF-PID compound control algorithm based on the improved particle swarm optimization algorithm, and designed a electric gas regulating device and its remote monitoring and controlling system. Their brilliant speeches had triggered heated discussion. And every participant praised this conference for disseminating useful and insightful knowledge.The proceedings of ICPECE 2022 are a compilation of the accepted papers and represent an interesting outcome of the conference. These papers feature but are not limited to the following topics: Power Electronics, Control Engineering, Precision Manufacturing and Testing, Smart Manufacturing, Optical Mechatronics, etc. All the papers have been checked through rigorous review and processes to meet the requirements of publication.We would like to express our sincere gratitude to all the keynote speakers, peer reviewers, and all the participants who supported and contributed to ICPECE 2022. Particularly, our special thanks go to the Journal of Physics: Conference Series, for all the efforts of its colleague in publishing this paper volume. We firmly believe that all the attendees have had fruitful discussions and gained valuable knowledge, and will enjoy the opportunity for future collaborations.The Committee of ICPECE 2022List of Committee member is available in the pdf.

Multiobjective Model Predictive Current Control Method of Permanent Magnet Synchronous Traction Motors With Multiple Current Bounds in Railway Application

For multiobjective model predictive current control (MPCC) method with penalties, the penalty weights are introduced into the cost function to determine the relative importance of control targets. However, the dimensions and value ranges of each control target are different. Thus, the penalty coefficient is difficult to determine. To avoid the difficulty of dimensionless parameter design, this article proposes a multiobjective control method called MPCC with multiple current bounds. In this article, the switching frequency and the common-mode voltage (CMV) are selected as the control target. Their control is converted into the limitation of the current ripple so that the control parameters have a clear physical meaning. On the one hand, the proposed method can realize the cooperative control of reference current tracking, switching frequency suppression, and CMV suppression. On the other hand, the key control parameters have the same dimension and strong correlation with others. Therefore, appropriate parameter design can be realized. Experimental investigations for permanent magnet synchronous motor prove the effectiveness of the control method.

A Torque-Compensated Fault-Tolerant Control Method for Electric Vehicle Traction Motor with Short-Circuit Fault

The development of traditional vehicles which consume fossil carbon-based fuels is constrained by environmental pollution and the energy crisis, and it has become a social consensus to develop electric vehicles with new energy resources and low emissions. The drive system of electric vehicles should be able to reliably operate over a long period. When a short-circuit fault occurs in the driving motor, the current in the winding will increase sharply and threaten driving safety. This paper proposed a short-circuit fault-tolerant control strategy for a dual three-phase permanent magnet synchronous traction motor (DT-PMSTM) which can resolve the problem of short-circuit faults. The current in non-short-circuit fault windings has been reconstructed to offset the interference of the short-circuit current and output a stable torque. Based on the principle of constant composited magnetic motive force (MMF), the dimension-reduced orthogonal transformation matrix was derived. The compensation currents were designed according to the interference effect of the short-circuit current to the normal MMF of the motor. Consequently, the lost torque component caused by the lack of the short-circuit winding was compensated, and the torque pulsation was also reduced. The performance of the topologies with neutral point-isolated mode and neutral point-connected mode were both investigated and compared. The validity of the proposed short-circuit fault-tolerant control strategy was proved by the simulation results.

Analysis of Temperature Rise in High-Speed Permanent Magnet Synchronous Traction Motors by Coupling the Equivalent Thermal Circuit Method and Computational Fluid Dynamics

Analysis of Temperature Rise in High-Speed Permanent Magnet Synchronous Traction Motors by Coupling the Equivalent Thermal Circuit Method and Computational Fluid Dynamics

Exciting Force and Vibration Analysis of Stator Permanent Magnet Synchronous Motors

Exciting Force and Vibration Analysis of Stator Permanent Magnet Synchronous Motors

Shaft Design for Electric Traction Motors

This paper presents shaft design techniques specifically for applications in electric traction motors for hybrid electric vehicles (HEVs) and electric vehicles (EVs). The typical characteristics of several shafts used in traction motors for commercial HEVs/EVs are studied. Then, the shaft design for a 24/16 switched reluctance machine (SRM) is presented. The 24/16 SRM is designed to replace an interior permanent magnet synchronous traction motor used in an HEV application. The requirements of shaft design, design procedures, circumferential positioning, bearing positioning, and design of output end and sensor end are presented and discussed in this paper.

Environmentally‐friendly Aspects and Innovative Lightweight Traction System Technologies of the Shinkansen High‐speed EMUs

AbstractIn 1964, the Tokaido Shinkansen marked the start of the world's first commercial service high‐speed railway that operates at over 200 km/h. Since then, the Tokaido Shinkansen has demonstrated successful business and technological advancement. With the speeding‐up of the Shinkansen, environmental matters such as noise and vibration have become critical issues. Measures taken to counter noise and vibration—such as weight reduction and aerodynamics—also effect global environmental measures to reduce energy consumption and CO2 emission. With the introduction of the Series 300, there was a system change of applying an AC drive system, and the lightweight body realized performance improvement over the earlier Series 0.The high‐speed EMUs have readily taken advantage of technological innovation such as those achieved in electronics technology. In particular, an innovative AC drive system comprising a power converter with a GTO thyristor and asynchronous motors realized a high‐performance and lightweight traction system for high‐speed EMUs in the 1990s. Furthermore, recent innovations in electronics technology, such as low switching loss power devices and high‐power permanent magnets, have improved the AC drive systems of the high‐speed EMUs of the 21st century.This article starts out by introducing environmentally friendliness of the Shinkansen trains in terms of low energy consumption by means of traction system change, and then proceeds to describe the recent technological innovations that have given birth to lightweight traction systems, such as the Permanent Magnet Synchronous traction Motor (PMSM) and power converters with train‐draft‐cooling systems. The article concludes by summing up the environmentally friendly aspects of the Tokaido Shinkansen. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

Development trend of the permanent magnet synchronous motor for railway traction

AbstractOwing to the resent progress in power electronics and permanent magnet materials, a permanent magnet synchronous motor (PMSM) that is lighter, smaller, and more efficient than the conventional induction motor has become realistic as a traction motor. We are making research and development effort on the introduction of the PMSM to rail vehicle traction. The recent development trend of the permanent magnet synchronous traction motor is reviewed. Copyright © 2007 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

Innovative Lightweight Technologies Using Power Electronics on Shinkansen High-Speed Electric Multiple Units

In 1964, Japan's Tokaido Shinkansen (bullet train) line was the world's first commercial-service, high-speed railway operating at more than 200 km/h. Since then, the Tokaido Shinkansen has demonstrated itself as a successful business and technological advancement. Historically, the Japanese high-speed train system, the Shinkansen, has employed a power-distributed system, an electric multiple-unit (EMU) system, with many advantages such as low axle load and good traction and braking performance. High-speed EMUs take advantage of technological innovations such as electronic technology. An innovative alternating current (AC) drive system, comprising a power converter with a gate turn-off thyristor and AC asynchronous motors, brought a high-performance and lightweight traction system to high-speed EMUs in the 1990s. In EMUs, traction system equipment can be distributed over a train set, and tractive axles throughout the train set can obtain required tractive force without putting a heavy load on the axle. Thus, maximum axle load is reduced, and a lightweight, high-performance train results. Furthermore, recent innovations, such as low switching loss power devices and high-power permanent magnets, have improved AC drive systems of high-speed EMUs of the 21st century. Features and advantages of high-speed EMU systems on the Shinkansen are described, as are recent technological innovations that have given birth to lightweight traction systems, such as the permanent magnet synchronous traction motor and power converters with train–draft-cooling systems. Environmentally friendly aspects of these innovative EMUs are introduced as well.

Transient thermal analysis using both lumped-circuit approach and finite element method of a permanet magnet traction motor

This paper presents the transient thermal analysis of a permanent magnet (PM) synchronous traction motor. The motor has magnets inset into the surface of the rotor to give a maximum field-weakening range of between 2 and 2.5. Both analytically based lumped circuit and numerical finite element methods have been used to simulate the motor. A comparison of the two methods is made showing the advantages and disadvantages of each. Simulation results are compared with practical measurements.

Feasibility of a Group Drive with Two Permanent Magnet Synchronous Traction Motors for Commuter Trains

Gearless permanent magnet synchronous traction motors (PMSM) offer lower life cycle costs compared to induction motors with gear units; however, PMSM usually require one inverter per motor. In commuter trains, one inverter feeds up to four induction motors – a cost advantage for induction motor drives. The feasibility of a group drive with two PMSM fed by one inverter is investigated to limit the number of inverters.