An Improved Sensorless Vector Control Method for IPMSM Drive with Small DC-Link Capacitors

Quan Yin, Haichun Li, Hui Luo, Qingyi Wang and Chendong Xu
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Quan Yin: School of Automation, Huazhong University of Science and Technology, Wuhan 430000, China
Haichun Li: School of Automation, Huazhong University of Science and Technology, Wuhan 430000, China
Hui Luo: School of Automation, Huazhong University of Science and Technology, Wuhan 430000, China
Qingyi Wang: School of Automation, China University of Geosciences, Wuhan 430000, China
Chendong Xu: School of Automation, Huazhong University of Science and Technology, Wuhan 430000, China

Energies, 2020, vol. 13, issue 3, 1-26

Abstract: In this paper, an improved sensorless vector control method for an interior permanent magnet synchronous motor (IPMSM) drive with small DC-link capacitors is proposed. First, a fast sliding-mode observer was applied, to enlarge the observer bandwidth. Then, an improved estimator based on a proportional integral resonant controller was designed for the estimate speed shaping, which means the actual speed can be tracked. This not only reduces the position estimate error, but also enhances the grid power factor and suppresses the input current harmonics. Simulation and experiments were conducted on a sensorless IPMSM drive system with a small film capacitor. The effectiveness of the proposed estimation method was verified by the simulation and experimental results. The estimated error was reduced and the grid current harmonics satisfy the requirements of EN61000-3-2.

Keywords: interior permanent magnet synchronous motor; small DC-link capacitor; sensorless vector control; fast sliding-mode observer; estimator; proportional integral resonant controller (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: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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