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- Title
An improved initial rotor position estimation method using high-frequency pulsating voltage injection for PMSM.
- Authors
Yang Jiang; Ming Cheng
- Abstract
High frequency pulsating voltage injection method is a good candidate for detecting the initial rotor position of permanent magnet synchronous motor. However, traditional methods require a large number of filters, which leads to the deterioration of system stability and dynamic performance. In order to solve these problems, a new signal demodulation method is proposed in this paper. The proposed new method can directly obtain the amplitude of high-frequency current, thus eliminating the use of filters, improving system stability and dynamic performance and saving the work of adjusting filter parameters. In addition, a new magnetic polarity detection method is proposed, which is robust to current measurement noise. Finally, experiments verify the effectiveness of the method.
- Subjects
SYNCHRONOUS electric motors; PERMANENT magnet motors; DEMODULATION; NOISE measurement; PARAMETER estimation
- Publication
Defence Technology, 2024, Vol 33, p19
- ISSN
2096-3459
- Publication type
Article
- DOI
10.1016/j.dt.2023.07.020