Design of search space for improving the steady current control performance of PMSM current control system based on model predictive control. Issue 2 (12th February 2021)

• Record Type: Journal Article
• Authors: Shimaoka, Masahiro; Doki, Shinji
• Is Part Of: Electrical engineering in Japan. Volume 214:Issue 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-02-12
• Subjects: PMSM -- model predictive control -- current vector control -- design of search space -- improvement of steady current control performance; Electrical engineering -- Periodicals; 621.30952
• DOI: 10.1002/eej.23303
• Languages: English
• ISSNs: 0424-7760

Abstract

Abstract: This paper proposes a method to design the search space of Model Predictive Control (MPC) for improving the steady current control performance of Permanent Magnet Synchronous Motor (PMSM) current control system. A current control system based on MPC predicts the future current behaviors for considerable input voltage and determines the optimum input voltage by evaluating these behaviors. However, the basic MPC has inferior steady current control performance depending on the operating points. This is because the search space of basic MPC represented by voltage vectors is not suitable appropriate for PMSM current control. To overcome this problem, we consider difference of search space of basic MPC and current vector control with a modulator such as Pulse Width Modulation (PWM) or Space Vector Modulation (SVM) and clarify the necessary search space for improving the steady current control performance. Then, we propose a design method for the search space, and through experimentation, we show that proposed design method can improve the steady current control performance.