전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2015년도 전력전자학술대회 논문집
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- Pages.419-420
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- 2015
Reduction of Output Voltage Ripples in Single-Phase PWM Rectifier with Active Power Decoupling Circuit
- Nguyen, Hoang-Vu (Department of Electrical Engineering, Yeungnam University) ;
- Lee, Dong-Choon (Department of Electrical Engineering, Yeungnam University)
- 발행 : 2015.07.07
초록
In this paper, a low-cost single-phase PWM rectifier with small DC-link capacitors is proposed, where a buck-boost converter with a low power rating is added at the DC link. By controlling the auxiliary circuit so as to absorb the voltage ripple in the DC link, the second-order voltage ripple in DC-link capacitor can be reduced significantly. Therefore, a small film capacitor can be utilized to replace the bulky electrolytic capacitors. The simulation results are shown to verify the validity of the proposed method.