A Rotor Position Detection Method of SRM by Measuring Mutually Induced Voltages
This paper describes a method of indirect rotor position measuring for sensorless SRM. The principle is based on measuring the mutually induced voltage in the two inactive phase which is adjacent to the energized phase of the SRM. The mutual voltage in the inactive phase, induced due to the current in the active phase, varies with the position of the rotor. In this paper the SRM was seen as a Differential transformer. One phase was chosen as the primary coil of the transformer, and the adjacent two phases were the Secondary coils. The two Secondary coils were connected in anti-series. A sine wave signal was poured to the primary coil and then we measured the mutual-inductance voltage and processed in a microcontroller to estimate the position of the rotor. The feasibility of the method was proved by a experiment of 8/6 pole four-phase switched reluctance motor.
SRM Mutual-inductance Voltage Senseless Rotor Position
Lin He Hexu Sun Jie Gao Jie Bai
School of Control science and engineering Hebei University of Technology,Tianjin,China Hebei Professional College of Political Science and Law Shijiazhuang,China
国际会议
太原
英文
221-223
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）