Journal of international Conference on Electrical Machines and Systems

Journal of International Conference on Electrical Machines and Systems (대한전기학회 분과)
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Study on Hybrid PWM Method under Low Switching Frequency

  • Kekang, Wei (School of Electrical Engineering, Beijing Jiaotong University) ;
  • Zheng, Trillion Q. (School of Electrical Engineering, Beijing Jiaotong University) ;
  • Wang, Ran (School of Electrical Engineering, Beijing Jiaotong University) ;
  • Wang, Chenchen (School of Electrical Engineering, Beijing Jiaotong University)
  • Received : 2011.06.29
  • Accepted : 2011.11.14
  • Published : 2012.06.01
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Abstract

This paper presents a hybrid pulse width modulation (PWM) method under low switching frequency conditions based on space vector PWM (SVPWM) and selective harmonic eliminated PWM (SHEPWM), which use asynchronous carrier modulation SVPWM at low frequency, and SHEPWM at high frequency, a square wave after rated conditions. A transitive strategy is proposed to realize a smooth transition of individual modes including SVPWM, SHEPWM and square waves. Experimental results confirm this hybrid modulation method and their transition are reasonable and proper.

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References

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