A study about reducing torque ripple of brushless DC motor
作者： Xuliang Yao , Xiaoming Jiang , Yan Zhang , Yingjian Chang
DOI: 10.1109/IPEMC.2016.7512317
关键词: Torque ripple 、 Commutation cell 、 Voltage compensation 、 Ripple 、 Control theory 、 Voltage source 、 Stator 、 Capacitor 、 Physics 、 Commutation
摘要: Owing to the inductance in stator winding of brushless DC motor, current can't respond immediately. During commutation interval, non-commutation phase ripple and torque are emerged. This paper presents a novel voltage compensation topology, including four switches, one power diode capacitor. By controlling switches sequences, period, source charges capacitor, simultaneously, during is series with keeping driving equal times back EMF amplitude, leading falling rate outgoing matches rising incoming current. The reduced significantly. Furthermore, taking account capacitor will drop as time going commutation, which causing decreases still exists. Combining overlap strategy can keep constant by delaying phase. At last, proposed method demonstrated effectively simulation MATLAB.
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