Design Characteristics of Torque Harmonics Reduction of Induction Motors for Electric Vehicle Propulsion

Abstract

This paper deals with torque harmonic characteristics and its reduction design of induction motors for electric vehicle (EV) propulsion. For calculating the stator harmonic flux of squirrel-cage induction motor, the numerical methods have been employed on the structural configuration design of stator and rotor teeth. In particular, torque ripples including spatial harmonics are obtained by Finite Element Method (FEM), and their individual harmonic components are identified with Fast Fourier Transform (FFT). In this paper, design modification on the teeth surface gives rise to the significant reduction of torque ripples including spatial torque harmonics, which have been obtained with FEM.

Effect of Voltage Sag on an Induction Motor

“…Induction motors are widely used in many industrial, commercial and residential applications various techno-economic advantages [8,9]. It is stated that more than 50% of the world's generated electrical energy is consumed by electric machines mainly by induction motors [10].…”

A New Stator Slot Design in order to Eliminate Space Harmonics in Induction Motors

“…Uzay harmoniklerinin düzgün motor tasarımı, sargıların düzgün tasarımı, hava aralığının optimize edilmesi ile azaltılabileceğini, zaman harmoniklerinin ise motor performansı üzerinde etkili olduğunu ifade etmişlerdir. (Jeon et al 2013) çalışmalarında asenkron motorun rotor dişlerinde yapısal değişikliğe giderek uzay harmoniklerini içeren moment salınımlarını azaltmayı amaçlamışlardır. (Kaikaa et al 2006) 2 ) = 0…”