Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Decoupled SVPWM for Five-Phase Permanent Magnet Machines with Trapezoidal Back-EMF

  • Lin, Zhipeng (School of Electrical and Information Engineering, Jiangsu University) ;
  • Liu, Guohai (School of Electrical and Information Engineering, Jiangsu University) ;
  • Zhao, Wenxiang (School of Electrical and Information Engineering, Jiangsu University) ;
  • Chen, Qian (School of Electrical and Information Engineering, Jiangsu University)
  • Received : 2018.03.17
  • Accepted : 2018.07.15
  • Published : 2018.09.20
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Abstract

This paper presents a novel space vector pulse-width modulation (SVPWM) to synthesize an arbitrary non-sinusoidal phase voltage. The key of the proposed method is that the switching vectors used to comprise the reference vectors in the ${\alpha}_1-{\beta}_1$ frame and the ${\alpha}_3-{\beta}_3$ frame are decoupled. In the ${\alpha}_1-{\beta}_1$ frame, the reference vector is comprised by near two large vectors. The corresponding vector comprised by the two vectors in the ${\alpha}_3-{\beta}_3$ frame is considered as a disturbance, which is restrained by close-loop control. In the ${\alpha}_3-{\beta}_3$ frame, there are two methods to comprise the reference vector. Method I is a near two middle vectors method. Method II uses near four vectors (two middle and two little vectors). The proposed SVPWM using decoupled switching vectors can guarantee a maximum modulation index in the ${\alpha}_1-{\beta}_1$ frame. The effectiveness of the proposed method is verified by simulated and experimental results under various operation conditions.

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References

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