Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Space vector pulse width amplitude modulation strategy for three-level direct matrix converter

  • Ye, Peile (Department of Automation Engineering, Shanghai University of Electric Power) ;
  • Cheng, Qiming (Department of Automation Engineering, Shanghai University of Electric Power)
  • Received : 2020.10.22
  • Accepted : 2021.03.15
  • Published : 2021.07.20
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Abstract

The total harmonic distortion and switching stress of a three-level direct matrix converter (TLDMC) is greatly reduced in comparison with those of a conventional matrix converter (MC). Meanwhile, the TLDMC leads to major advantages in comparison with existing multi-level AC-DC-AC converter topologies in terms of reduced switch counts and lowered switching power loss. In this paper, a space vector pulse width amplitude modulation (SVPWAM) strategy for the TLDMC is proposed, which can reduce the number of switching actions and improve the voltage utilization by eliminating the zero vector of each sector. An indirect modulation model of a TLDMC is discussed according to the topology of TLDMC in this paper. For the space vector modulation of the TLDMC, the space vector pulse width modulation (SVPWM) with a zero-vector of the fictitious rectifier stage is improved to form the SVPWAM. In addition, the virtual space vector pulse width modulation (VSVPWM) strategy is used for the fictitious inverter stage. Finally, simulation and experimental results verify the correctness of the proposed method.

Keywords

Acknowledgement

This work has been supported by National Natural Science Foundation of China (61573239) and Shanghai Key Laboratory Power Station Automation Technology Laboratory (13DZ2273800).

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