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Discontinuous space-vector modulation for three-level PWM rectifiers
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DOI：10.1109/TPEL.2007.915160.png)
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摘要
En 中文
This paper presents the implementation and experimental verification (if two discontinuous pulsewidth modulation (DPWM) methods for three-phase, three-level rectifiers. DPWM's features, such as improved waveform quality, lower switching losses, reduced ac-side passive component size, are investigated and compared to the conventional continuous pulsewidth modulation (CPWM). These features allow higher power density and/or efficiency to be achieved and are important targets for the next generation of power rectifiers. The implementation of the two DPWM strategies is explained by means of space-vectors representation and modulation functions. A detailed analysis of both ac-side and dc-side current waveforms is presented, and there is excellent agreement between the analytical, simulated and experimental results for the mains current ripple amplitude and output center-point current over the practical modulation range. Finally, the control of the center-point voltage is discussed.
Keyword:
discontinuous pulsewidth modulation
three-phase three-level rectifiers
space-vector modulation
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6.5
论文数:
1.7W
被引数:
8.3W
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