Torque-ripple minimization and fast dynamic scheme for torque predictive control of permanent-magnet synchronous motors

Yongsoo Cho, Kyo Beum Lee, Joong Ho Song, Young Il Lee

Research output: Contribution to journalArticlepeer-review

196 Scopus citations

Abstract

This paper proposes a simple and effective method to reduce torque ripples for the torque predictive control (TPC) of permanent-magnet synchronous motors (PMSMs). The conventional TPC analyzes the relationship among the electrical torque, stator flux, and stator voltage using the magnitude of the stator voltage vector of PMSMs to obtain the angle of the reference voltage vector and accurately control the torque. In addition, the stator-flux control uses the hysteresis method. However, the voltage vector that can be chosen in an inverter is limited because the conventional TPC fixes the magnitude of the reference voltage vector, and thus, a large torque ripple is generated in the low-speed region. The proposed TPC does not fix but varies the magnitude of the reference voltage vector using both the torque and flux error information. Therefore, it not only has the fast dynamic of a direct torque control but also can reduce effectively the torque ripple. The proposed method is proven by the simulation and experimental results, and the proposed algorithm provides an excellent steady-state response and fast dynamics.

Original languageEnglish
Article number6823158
Pages (from-to)2182-2190
Number of pages9
JournalIEEE Transactions on Power Electronics
Volume30
Issue number4
DOIs
StatePublished - 1 Apr 2015

Keywords

  • Permanent-magnet synchronous motor (PMSM) drives
  • Space-vector pulse width modulation (SVPWM)
  • Torque predictive control (TPC)
  • Torque ripple reduction

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