Implementation of a high-power-factor interior permanent magnet synchronous motor drive system with a small film DC-link capacitor

• Main Authors: Tian-Hua Liu, Muhammad Syahril Mubarok, Zhi-Sheng Yang
• Format: Article
• Language: English
• Published: Wiley 2020-04-01
• Series: The Journal of Engineering
• Subjects: permanent magnet motors; machine windings; invertors; machine control; electric current control; power factor; predictive control; synchronous motor drives; angular velocity control; power capacitors; digital signal processing chips; electric machine analysis computing; control engineering computing; torque control; power conversion harmonics; damping compensation method; input power factor; input current harmonics; current-loop predictive controller; speed-loop predictive controller; control centre; control algorithms; high-power-factor interior permanent magnet synchronous motor drive system; film dc-link capacitor inverter; control methods; positive torque region current control; torque dynamics
• Online Access: https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0785
• ISSN: 2051-3305

This study investigates a small film DC-link capacitor inverter for a permanent magnet synchronous motor drive system. Two control methods, including a d–q-axis current control and a positive torque region current control, are originally proposed to improve the torque dynamics of the drive system. In addition, a damping compensation method is used to improve the input power factor and reduce the input current harmonics. A current-loop predictive controller and a speed-loop predictive controller are first proposed to improve the dynamic responses of the interior permanent magnet synchronous motor drive system. To implement the drive system, a digital signal processor, TMS 320LF2808, is used as a control centre to execute the control algorithms. Experimental results can validate the correctness and feasibility of the proposed methods.