Design for the Interior Permanent Magnet Synchronous Motor Drive System Based on the Z-Source Inverter

Shuai Dong, Qianfan Zhang, Hongwei Ma and Rui Wang
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Shuai Dong: School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150000, China
Qianfan Zhang: School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150000, China
Hongwei Ma: School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150000, China
Rui Wang: School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150000, China

Energies, 2019, vol. 12, issue 17, 1-14

Abstract: The permanent magnet synchronous motor (PMSM) running above the base speed requires flux-weakening control, which is usually realized by the direct-axis demagnetization current generated by the vector control, thus leading to a decrease in the system efficiency in the flux-weakening region. In addition, the motor power output range is limited by the inverter output voltage and current level. In this paper, a Z-Source drive PMSM control system with adjustable DC-link voltage was proposed to improve the efficiency of the motor system. The proposed system was experimentally verified. The response time of DC-link voltage is 10 ms and the overshoot is 3%, indicating good dynamic characteristics. Compared with the flux-weakening scheme, the Z-Source inverter scheme can achieve higher efficiency (about 3%) when the PMSM speed was set to 650 r/min.

Keywords: Z-Source inverter; DC-link voltage; permanent magnet synchronous motor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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