Direct Speed Control Based on Finite Control Set Model Predictive Control With Voltage Smoother

Hiroaki Kawai, Zhenbin Zhang, Ralph Kennel, Shinji Doki

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A direct speed control strategy based on finite control set model predictive control (FCS-MPC) with a voltage smoother is presented herein. In the proposed concept, a finite set of smoothed voltage vectors characterized by an adjustable amplitude and a movable origin is introduced as voltage candidates in the FCS-MPC scheme. The controller predicts the future current and speed and outputs the optimal smoothed voltage using pulse-width modulation. Owing to this control scheme, an abrupt change in the output voltage, which causes a large current ripple, is avoided without additional computational costs. Simulation and experimental results obtained using a permanent magnet synchronous motor fed by a two-level three-phase inverter show that the proposed method effectively reduces the current ripple while achieving a high dynamic drive compared with the conventional FCS-MPC scheme.

Original languageEnglish
Pages (from-to)2363-2372
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume70
Issue number3
DOIs
StatePublished - 1 Mar 2023
Externally publishedYes

Keywords

  • Direct speed control
  • finite control set model predictive control (FCSâ€Â"MPC)
  • permanent magnet synchronous motor (PMSM)
  • pulse-width modulation (PWM)
  • voltage smoother

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