Emulation of nonsine drive technology of nine-phase induction machine

ZHANG Wan-jie1，ZHANG Jing2，CHEN Hui-ming1，CAI Zhuo-jian1
（1. School of Electrical Engineering，Zhejiang University，Hangzhou 310027，China；
2. Power Supply Bureau of Yuhang District，Hangzhou 311100，China）

Abstract： In order to study the non-sinusoidal motor drive technology，a detailed analysis of non-sinusoidal motor drive technology was accomplished. Based on the Matlab Simulink development platform，a model of nine-phase induction motor was established，especially for emulation use. By applying the generalized Park transformation，multi-phase induction motor model was converted into d-q harmonic plane. On this basis，the model of a nine-phase induction motor was built. When injected with high order harmonics，a better performance was established in rotational speed and electromagnetic torque，compared to sinusoidal supply. The emulation result shows that non-sinusoidal motor drive technology has great advantages in high power applications.
Key words： multiphase motor；higher stator current injection；nonsine drive；Matlab emulation