An approach to selecting the optimal sensing coil configuration structure for switched reluctance motor rotor position measurement.
Accurate rotor position signal is highly required for controlling the switched reluctance motor (SRM). The use of galvanic isolated sensing coils can provide independent circuit for position estimation without affecting the SRM actuation. However, the cross-coupling between main winding and sensing coil, and the mutual coupling between adjacent phase sensing coils may affect the position estimation performance seriously. In this paper, three sensing coil configurations in a 12/8 structure SRM are analyzed and compared for selecting an optimal configuration that can effectively minimize the bad effects of the cross-coupling factors. The finite element analysis and experimental results are provided for verification.
Jiangsu Engineering Research Center on Meteorological Energy Using and Control, and Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, School of Information and Control, Nanjing University of Information Science and Technology, Nanjing 210044, China.
Jun
J
Cai
College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Zhiquan
Z
Deng