Novel driving method for BLDCM from standstill to high speeds
作者： Liu He-ping , Wang Hua-bin
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摘要: A novel approach is proposed which can drive an interior permanent magnet (IPM) brushless DC motor (BLDCM) smoothly from standstill to high speeds without position or speed sensors. At standstill, initial rotor estimated by using the inductance variation due position. In rotating condition, indirect method was implemented for BLDCM with H_PWM-L_PWM modulation scheme at very low speeds; When beyond a certain where back EMF enough, sensorless algorithm detection switched IPM H_PWM-L_ON scheme. The validity of verified through Experimental results.
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