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The conventional pulse width modulation (PWM) modes for braking operation in Brushless DC motor may cause diode freewheeling in inactive phase during normal conduction period which will aggravate torque ripple. In this paper, a novel braking PWM modulation mode named PWM_OFF_PWM is proposed to eliminate the diode freewheeling. The performance of the proposed PWM_OFF_PWM mode on diode freewheeling...
Brushless DC motor has been becoming more popular in industry, electric and aerospace applications, making the control for four-quadrant operation of Brushless DC motor greatly significant. This paper presents pulse width modulation (PWM) control mode for four-quadrant operation of Brushless DC motor, which can realize both motoring and braking operation at the same rotation direction. Based on the...
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