Harmonic Current Suppression for Dual Three-Phase PMSM Based on Deadbeat Control and Disturbance Observer

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

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Detail(s)

Original languageEnglish
Number of pages11
Journal / PublicationIEEE Transactions on Industrial Electronics
Online published1 Jun 2022
Publication statusOnline published - 1 Jun 2022

Abstract

Harmonic currents always exist in a dual three-phase permanent magnet synchronous machine (PMSM) due to the inverter nonlinearity, non-sinusoidal back-electromotive force, and external disturbances. This article proposes a deadbeat predictive harmonic current control (DPHCC) method to suppress the harmonic currents. The DPHCC method can directly calculate the harmonic control voltage based on the sampled harmonic currents and the machine model. Thus, the steady-state and transient-state performance of harmonic current control can be improved. Further, a disturbance observer is designed to avoid the influence of inaccurate machine parameters and other unmodelled disturbances. The observer is designed based on discrete-time sliding mode theory and an improved sliding mode reaching law. The stability of the observer has been analyzed, and the value range of the observer parameters has been determined theoretically. Finally, experimental results have been presented to verify the effectiveness of harmonic current suppression for the proposed control system.

Research Area(s)

  • Deadbeat control, disturbance observer, Disturbance observers, dual three-phase, Harmonic analysis, harmonic current, Inverters, Mathematical models, permanent magnet synchronous machine (PMSM), Power harmonic filters, sliding mode, Stator windings, Voltage control