Thứ sáu, 25/04/2025 | 12:26 GMT+7
ABSTRACT The PFC (Power Factor Correction) AC / DC Vienna converter with the least number of control semiconductor devices has received wide attention over the years to improve the quality of the input power systems, and to obtain utility power factor. In this paper, the author reviews 3-level, 5-level topologies and proposes a 7-level Vienna topology with PWM (Pulse Width Modulation) control to eliminate low frequency harmonics in the current and to achieve power factor equal to one at the input of the rectifier. The author simulated and compared the THD (Total harmonic distortion) of current for all 3 structures with the same power level of 3kW. The results of the study were verified by simulation by PSIM software. Keywords: Multi-level converter, Vienna, Power Factor Correction, Pulse Width Modulation |
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03/04/2025