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Alternative TitleDetection method for position of rotor in full-speed domain of permanent magnet synchronous motor without position sensor
刘明; 佟新鑫; 朱丹
Rights Holder中国科学院沈阳自动化研究所
Patent Agent沈阳科苑专利商标代理有限公司 21002
Other AbstractThe invention discloses a detection method for position of a rotor in a full-speed domain of a permanent magnet synchronous motor without a position sensor. The detection method mainly comprises a high-frequency signal injection method, an extended back electromotive force method and a switching method. When the motor is stationary or operates at a low speed, the high-frequency signal injection method is used for estimating the position of the rotor, and the switching method is designed, so that when back electromotive force is large enough, the high-frequency signal injection method is switched to the extended back electromotive force method to estimate the position of the rotor. According to the detection method disclosed by the invention, the two methods are effectively integrated through the designed switching method, so that the detection method for the position of the rotor of the permanent magnet synchronous motor without the position sensor can be used in a full-speed range and is high in detection precision and easy to implement.
PCT Attributes
Application Date2013-11-21
Date Available2017-03-08
Application NumberCN201310593618.9
Open (Notice) NumberCN104660119B
Contribution Rank1
Document Type专利
Recommended Citation
GB/T 7714
刘明,佟新鑫,朱丹. 无位置传感器永磁同步电机全速度域转子位置检测方法[P]. 2015-05-27.
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