A Soft-Switching Current-Source-Inverter-Fed Motor Drive with Reduced Common-Mode Voltage

Yang Xu, Zheng Wang, Pengcheng Liu, Jiangbiao He

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


This article proposes a common-mode voltage (CMV) attenuation method for the three-phase current source inverter (CSI)-fed permanent-magnet synchronous machine drive. The key of this method is to introduce an auxiliary circuit branch connected in parallel with the dc link. Based on the dedicated switching strategy, the zero-voltage-switching conditions are provided for the main switches in the CSI. In particular, the zero current vector is newly constructed without utilizing shoot-through operation in the CSI. Thus, the CMV in the traditional CSI drives is attenuated significantly. Compared with the existing research on CMV suppression, the proposed method will not compromise the modulation index range or increase output current harmonics. Meanwhile, the overshoot voltage can be clamped by the auxiliary power circuit in the dc link under open-circuit fault in the power switches. The system configuration, operating principle, analysis of operation modes, as well as the control scheme are described in detail. Both simulation and experimental results are presented to verify the performance of the proposed method.

Original languageEnglish
Article number9032358
Pages (from-to)3012-3021
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Issue number4
StatePublished - Apr 2021

Bibliographical note

Publisher Copyright:
© 1982-2012 IEEE.


  • Common-mode voltage (CMV)
  • current source inverter (CSI)
  • motor drives
  • soft switching
  • space vector modulation (SVM)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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