Direct Harmonic Current Control Scheme for Dual Three-Phase PMSM Drive System

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Original languageEnglish
Pages (from-to)11647-11657
Journal / PublicationIEEE Transactions on Power Electronics
Issue number10
Online published31 Mar 2021
Publication statusPublished - Oct 2021


The performance of model predictive control mainly depends on the accuracy of model and parameters, such as the back EMF harmonics in dual three-phase PMSMs. However, the back EMF harmonics would vary with the operation conditions. Thus, the parameter mismatches in the harmonic subspace would be inevitable. In this paper, a direct harmonic current control scheme is proposed to provide further harmonic current suppression under parameter mismatches in the xy subspace. Firstly, deadbeat control concept is applied to calculate the reference voltage in the αβ subspace. This reference voltage vector is utilized to generate a group of control sets with different voltage vectors in the xy subspace. Then, a slide mode control scheme is provided to deal with the inaccurate parameters in the xy subspace. The reference voltage vector in xy subspace is obtained with this slide mode control scheme without the remaining inductance parameters. Thirdly, a two-step modulation method and cost function are discussed to further suppress the harmonic currents. The control sets generated by deadbeat control are optimized with the cost function. Moreover, a switching pattern with fixed switching frequency is proposed in this section. Finally, experiments verify that proposed control scheme could further suppress the harmonic currents.

Research Area(s)

  • Dual three-phase (DTP), Harmonic analysis, Harmonic current control, Integrated circuits, parameter mismatch, Permanent magnet machine, permanent magnet synchronous motors (PMSM), Predictive control, Random access memory, Technological innovation, Torque, Voltage control