Elimination of discrete position sensor and current sensor in switched reluctance motor drives
作者： M. Ehsani , I. Husain , A.B. Kulkarni
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摘要: Shaft position sensing is essential in switched reluctance motors (SRMs) order to synchronize the phase excitation pulses rotor position. In implement closed loop torque control, current sensors are also unavoidable. These can constitute a substantial portion of total system cost and tend reduce reliability. A low-cost position-sensing scheme using stator inductance measurement presented. An analog electronic technique be applied measure nonconducting by linear frequency modulated (FM) converter. The output FM converter decoded get shaft signal. control functions switching signals processed microcontroller. discrete for closed-loop operation have been eliminated MOS-gated power switches with integrated capability. combination above two schemes resulted totally sensorless SR motor drive. >
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