Improved Zero-Sequence Current Hysteresis Control Based-Space Vector Modulation for Open-End Winding PMSM Drives with Common DC Bus

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Number of pages5
Journal / PublicationIEEE Transactions on Industrial Electronics
Online published2 Nov 2022
Publication statusOnline published - 2 Nov 2022


Through the zero-sequence current (ZSC) hysteresis controller, the existing ZSC hysteresis control-based space vector modulation (SVM) strategy can provide a satisfactory ZSC suppression effect and greatly reduce the complexity for the open-end winding permanent magnet synchronous machine (OW-PMSM) drive with common dc bus. However, the corresponding linear modulation range is reduced by 12.7% compared with the middle hexagon space vector modulation (MH-SVM) for the OW-PMSM drive. To this end, this letter improves the linear modulation range of the existing strategy. The candidate voltage vectors for each sector are re-selected, and three active voltage vectors will be employed in the extended feasible region. While ensuring the ZSC hysteresis control, the linear modulation range of the proposed strategy is the same as the MH-SVM. At last, experimental results verify the feasibility and effectiveness of the proposed strategy. The proposed strategy can suppress the ZSC effectively, and the corresponding maximum speed is the same as the counterpart of the MH-SVM.

Research Area(s)

  • Hysteresis, hysteresis control, Inverters, linear modulation range, Modulation, Open-end winding permanent magnet synchronous machine (OW-PMSM), space vector modulation, Support vector machines, Switches, Voltage control, Windings, zero-sequence current