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Analysis and Suppression of Torque Ripple During Non-commutation of Brushless DC Motor

Feng Zhen

Open publisher page 2 citations

Abstract

Torque ripple is an important factor affecting the performance of Brushless DC motor(BLDCM).In this paper,the non-commutation torque ripple was analyzed,focusing on the torque ripple caused by PWM_ON modulation.The main part of the torque ripple was caused by the PWM_OFF,and the diode freewheeling of inactive phase can compensate the torque ripple to some extent.Meanwhile,hysteresis current control was proposed to suppress the non-commutation torque ripple.The simulation and experiment show the difference between the method and the traditional method,and prove the validity of the method suppressing the torque ripple during non-commutation.

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What this paper is about

Torque ripple is an important factor affecting the performance of Brushless DC motor(BLDCM).In this paper,the non-commutation torque ripple was analyzed,focusing on the torque ripple caused by PWM_ON modulation.The main part of the torque ripple was caused by the PWM_OFF,and the diode freewheeling of inactive phase can compensate the torque ripple to some extent.Meanwhile,hysteresis current control was proposed to suppress the non-commutation torque ripple.The simulation and experiment show the difference between the method and the traditional method,and prove the validity of the method suppressing the torque ripple during non-commutation.

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OpenAlex reports 2 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Torque ripple is an important factor affecting the performance of Brushless DC motor(BLDCM).In this paper,the non-commutation torque ripple was analyzed,focusing on the torque ripple caused by PWM_ON modulation.The main part of the torque ripple was caused by the PWM_OFF,and the diode freewheeling of inactive phase can compensate the torque ripple to some extent.Meanwhile,hysteresis current control was proposed to suppress the non-commutation torque ripple.The simulation and experiment show the difference between the method and the traditional method,and prove the validity of the method suppressing the torque ripple during non-commutation.

Key concepts: Control theory (sociology), Commutation, Torque ripple, Torque limiter, Direct torque control, Ripple, Torque motor, Torque

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