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This paper proposes a novel reference voltage controlled pulse width modulation technique to minimize the excitation torque ripple of a single-phase brushless DC motor for high-speed applications. The proposed control technique reduces output current ripple by modifying PWM reference voltage rather than shifting input voltage phase. The comparison results of output torque indicate that the proposed...
This paper presents a new power electronic topology that aims to reduce switching losses in hard-switched inverters for brushless dc (BLDC) motor drives. This is achieved by extending the benefits of synchronous rectification used in low-voltage switch-mode dc–dc conversion to high-voltage motor drive applications and by minimizing the reverse conduction behavior of the intrinsic body diode of the...
It is a well-known fact that wide-bandgap (WBG) materials such as gallium nitride (GaN) and silicon carbide (SiC) have superior characteristics compared to silicon (Si) in power electronics and motor drive applications. Performance of a single-phase brushless high-speed DC motor can be improved by using GaN-based drive since it requires high frequency operation and low conduction and switching losses...
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