Investigation and Development of the Brushless and Magnetless Wound Field Synchronous Motor Drive System for Electric Vehicle Application

In order to solve the problems of soaring costs and supply fluctuation in permanent magnet materials, this paper investigates and develops a magnetless wound field synchronous motor (WFSM) drive system for electric vehicle (EV) application. As the crucial drive component for EVs, the proposed WFSM i...

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Bibliographic Details
Published inWorld electric vehicle journal Vol. 14; no. 4; p. 81
Main Authors Li, Yanhui, Wang, Yiwei, Zhang, Zhuoran, Li, Jincai
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.03.2023
Subjects
Brushless motors
Current regulators
Design
Efficiency
electric vehicle drive system
Electric vehicles
Environmental impact
Excitation
magnetless machine
Permanent magnets
Synchronous motors
wound field synchronous motor
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Summary:In order to solve the problems of soaring costs and supply fluctuation in permanent magnet materials, this paper investigates and develops a magnetless wound field synchronous motor (WFSM) drive system for electric vehicle (EV) application. As the crucial drive component for EVs, the proposed WFSM in this paper has a two-stage structure which is described as the exciter and the main motor. The excitation characteristics of the exciter that provide power to the rotor field winding are emphatically analyzed. In addition, the discrete time domain armature current regulator and excitation current regulator are designed and analyzed for the high-performance WFSM drive system. A current coordinated control strategy for the full speed range is proposed to expand the constant power region. The experiment shows that the excitation characteristics and torque capability of the WFSM are consistent with the analysis, and proves that the WFSM is a potential solution for the magnetless motor for EV application.
ISSN:2032-6653
2032-6653
DOI:10.3390/wevj14040081