Simulation of Three-region Commutation Torque Ripple Reduction for Brushless DC Motor

doi:10.16182/j.issn1004731x.joss.201708011

Abstract

Abstract: Aiming at brushless DC motor torque ripple during commutation section, new three-step three phases PWM method was proposed based on voltage balance principle, improving existing two phase PWM suppression method and suitable for all speed section. In this new method, the principle of non-commutation phase voltage and the neutral point voltage variation was researched. Voltage difference was remained the same by three-step PWM control strategy before and after commutation in order to suppression current ripple. Comparing with existing current slope research method, this new method is with a series of advantages: simple parameters, computing, and sampling circuit design. System suitability is improved.

Key words: commutation torque ripple reduction, brushless DC, voltage balance principle, PWM

CLC Number:

TM383

Zhu Junjie, Liu Haoran. Simulation of Three-region Commutation Torque Ripple Reduction for Brushless DC Motor[J]. Journal of System Simulation, 2017, 29(8): 1719-1725.

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