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A Study on the Output Noise Reduction of 3-Phase 3-Level Inverter  

Kim, Soo-Hong (중앙대 대학원 전자전기공학부)
Jin, Kang-Hwan (중앙대 대학원 전자전기공학부)
Kim, Yoon-Ho (중앙대 전자전기공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.13, no.1, 2008 , pp. 9-14 More about this Journal
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.
Keywords
NPC 3-level inverter; Output filter; Harmonic reduction;
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Times Cited By KSCI : 1  (Citation Analysis)
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