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- Title
基于两相脉冲电流峰值差的开关磁阻电机无位置传感器控制.
- Authors
周 江 迪; 孙 建 忠; 白 凤 仙
- Abstract
The sensorless control method of the switched reluctance motor has always been a hot research topic. The traditional single-phase pulse injection method is simple and easy to implement, but the current threshold needs to be set in advance. The two-phase pulse injection method does not require a threshold, but when the rotary speed increases, the rotor conduction angle is too lagging. Its rotary speed regulation range is limited. Therefore, in order to retain the advantages of not requiring a current threshold and broaden the conduction interval, a new two-phase pulse injection method is proposed. On the basis of two-phase pulse injection, the maximum value of the response current peak difference is retrieved, and the rotor position is accurately obtained by curve fitting in the vicinity of the extreme value, so that the operation could be controlled without a position sensor. Finally, simulations and experiments are carried out with a 12/8 structure of switched reluctance motor as an example. The results show that the method has good torque characteristics and small rotor position errors. This method is effective and feasible.
- Subjects
SPEED limits; EXTREME value theory; CURVE fitting; SENSOR placement; POSITION sensors; SWITCHED reluctance motors; TORQUE; ROTOR vibration
- Publication
Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao, 2022, Vol 62, Issue 3, p246
- ISSN
1000-8608
- Publication type
Article
- DOI
10.7511/dllgxb202203004