Performance comparison of three-step and six-step PWM in average-current-controlled three-phase six-switch boost PFC rectifier

In this paper, a three-step PWM method for the average-current-controlled three-phase six-switch boost PFC rectifier is proposed. It is shown that the three-step PWM compared to the conventional six-step PWM exhibits a lower total harmonic distortion of input currents and higher power factor. Howeve...

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Bibliographic Details
Main Authors: Huber, Laszlo, Kumar, Misha, Jovanovic, Milan M.
Format: Conference Proceeding
Language:English
Subjects:
Control systems
Digital signal processing
Integrated circuits
Pulse width modulation
Rectifiers
Steady-state
Voltage control
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Summary:In this paper, a three-step PWM method for the average-current-controlled three-phase six-switch boost PFC rectifier is proposed. It is shown that the three-step PWM compared to the conventional six-step PWM exhibits a lower total harmonic distortion of input currents and higher power factor. However, the three-step PWM, unlike the six-step PWM, is adversely affected by duty-cycle limitations and has unbalanced conduction losses of the upper and lower switches of the three-phase rectifier bridge. The average-current control with three-step and six-step PWM is illustrated with Matlab/Simulink simulation waveforms and experimentally verified on a 3-kW prototype.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2015.7104600