Torque harmonic analysis of induction motor for electric vehicle propulsion

2012 IEEE Vehicle Power and Propulsion Conference Pub Date : 2012-10-01 DOI:10.1109/VPPC.2012.6422534

K. Jeon, Yong-Jae Kim, Seungho Lee, Kwangdeok Kim, Sang-Yong Jung

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引用次数: 1

Abstract

This paper deals with torque harmonic characteristics of induction motor for electric vehicle (EV). For calculate phase stator harmonic leakage flux of a three phase induction motor, an analysis method is determine relationships with stator teeth design. In particular, torque harmonics including EMF harmonics at whole speed ranges are analyzed by the finite element method (FEM). Torque harmonic components are identified with Fourier fast transform (FFT). Torque harmonics are generated due to the different phase windings interaction and they can be reduced by applying a stator teeth design. The electromagnetic field and corresponding harmonics of an electrical machine are calculated using the FEM, the harmonic winding factors show how the torque harmonics can be reduced significantly by good stator teeth design. The novel design methods to compensate the specified torque harmonics are proposed. Then, its effectiveness is clarified according to the representative control strategies for induction motor such as maximum torque per ampere (MTPA) and flux-weakening control.

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电动汽车推进用感应电机转矩谐波分析

研究了电动汽车用感应电动机的转矩谐波特性。在计算三相异步电动机相定子谐波漏磁时，提出了一种确定与定子齿设计关系的分析方法。特别地，用有限元法分析了包括电动势在内的全转速范围内的转矩谐波。利用傅里叶快速变换(FFT)识别转矩谐波分量。转矩谐波是由于不同相位绕组的相互作用而产生的，通过采用定子齿设计可以减小转矩谐波。采用有限元法计算了电机的电磁场和谐波，谐波绕组因子表明，良好的定子齿设计可以显著降低电机的转矩谐波。提出了补偿指定转矩谐波的新设计方法。然后，根据感应电机最大转矩/安培(MTPA)和磁链弱化控制等代表性控制策略，阐明了其有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 IEEE Vehicle Power and Propulsion Conference

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