Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2007.07a
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- Pages.101-103
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- 2007
A Study on the Output Noise Reduction of 3-Phase Multilevel Inverter
3상 멀티레벨 인버터 출력노이즈 저감에 관한 연구
- Kim, Soo-Hong (Power Electronics Laboratory in Chung-Ang University) ;
- Jin, Kang-Hwan (Power Electronics Laboratory in Chung-Ang University) ;
- Kin, Yoon-Ho (Power Electronics Laboratory in Chung-Ang University)
- Published : 2007.07.02
Abstract
Since they use the low switching frequency in multilevel inverter systems, they generate the high low frequency harmonic components. Generally, LC filter is used at the output terminal of inverter systems to solve this problem. But it causes a voltage drop at the output terminal by use of damping resistors, and causes the problem in which system efficiency decreases due to power loss of the damping resistor. In this paper, we proposed an output filter design method for NPC three-level inverter systems with low switching frequency. And we analyzed the efficiency of the proposed filter system, and the effectiveness of the proposed system is verified by simulation and experimental results.
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