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This paper first starts with reviewing several commonly practiced PWM schemes for the three-phase isolated buck matrix-type rectifier. Then, an optimal six-segment PWM scheme (“Type A”) is proposed. The analysis shows “Type A” PWM scheme has lower duty-cycle loss, maximum output inductor current ripple, and minimum switching loss comparing with other PWM schemes when the <sc>mosfet</sc>...
In this paper zero-vector intervals of eight-segment PWM scheme based on space vector modulation (SVM) is optimized for three-phase isolated buck matrix-type rectifier. With the proposed non-equally distributed zero-vector intervals of eight-segment PWM scheme, the output inductor current ripple of the converter is reduced comparing to that of the equally distributed zero-vector intervals. The steady...
In this paper, a novel three-phase matrix based isolated AC-DC converter is proposed for DC distribution system. The circuit is derived from boost converter based matrix PWM rectifier by only adding a small commutation capacitor and inductor. Compare to traditional power factor correction rectifier plus DC/DC two-stage configuration, the proposed converter has higher efficiency and power density....
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