A Simplified Model Predictive Control for a Dual Three-Phase PMSM With Reduced Harmonic Currents

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

20 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)9079-9089
Journal / PublicationIEEE Transactions on Industrial Electronics
Volume65
Issue number11
Online published9 Mar 2018
Publication statusPublished - Nov 2018

Abstract

The conventional model predictive control for dual three-phase motors only evaluates the largest voltage vectors to alleviate the computation burden, but at the costs of large current harmonics and torque ripple. This paper presents a simplified model predictive torque control (MPTC) for an asymmetrical dual three-phase permanent magnet synchronous motor (PMSM), which can significantly improve the machine performances. First, the 36 active voltage vectors in the outer three layers are considered with the proposed control method. In order to suppress the stator harmonic currents, the voltage vectors are preselected based on a switching table according to the flux position and torque deviation in the α-β, x-y subspace. Simultaneously, the number of prediction voltage vectors can also be reduced, thus effectively decreasing the computation time. In particular, with the proposed MPTC method, the harmonic currents can be effectively suppressed. Furthermore, the computational burden can be considerably alleviated. In the meantime, the merits of the conventional MPTC such as fast dynamic response and intuitive implementation are preserved. Finally, both simulation and experimental results are performed to verify the validation of the proposed MPTC methodology when comparing with the conventional MPTC for the dual three-phase PMSMs.

Research Area(s)

  • Computation time, current harmonics, dual three-phase machine, model predictive torque control (MPTC), multiphase machine, permanent magnet synchronous motor (PMSM), prediction vector