The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Three-Phase Z-Source Hybrid Active Power Filter System

3상 Z-소스 하이브리드 능동전력필터 시스템

  • Published : 2010.02.20
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Abstract

In this paper, a Z-source hybrid active power filter is proposed to compensate the harmonics and reactive power in power distribution system. The proposed system is composed of a 7th harmonics-tuned passive filter and an active power filter with a Z-source inverter topology, while voltage source PWM inverter or current source PWM inverter are applied as the power converter topology of conventional active power filters. The Z-source impedance network along with shoot through capability would ensure a constant DC voltage across the DC link. A polymer electrolyte membrane fuel cell is employed as an compensation DC energy source of the proposed system and its equivalent R-L-C circuit is modeled for simulation. As the compensation and control algorithm of the proposed system, the current synchronous detection algorithm is applied. The simulation analysis by PSIM is performed under the three-phase 220V/60Hz voltage source and 25A nonlinear diode loads. The effectiveness of the proposed the system is verified in the steady and transient states.

본 연구에서는 비선형 부하에서 발생되는 기본파 무효전력 및 고조파를 보상하기 위한 종전의 전압형 및 전류형 PWM 능동전력필터를 대체 할 수 있는 Z-소스 인버터 토폴로지의 하이브리드 능동전력필터에 대하여 고찰하였다. Z-소스 토폴로지의 능동전력필터의 보상 DC전원으로는 PEMFC가 사용되며, Z-소스 인버터의 shoot-through 듀티비의 조절에 의하여 낮은 연료전지의 전압을 높은 보상 전압으로 부스트 한다. 제안된 시스템은 병렬형 Z-소스 능동전력필터와 7차 고조파 (420Hz) 동조 필터로 구성되며, 이 구성에 의하여 Z-소스 능동전력필터의 스위치 디바이스의 전압 스트레스는 감소된다. 제안된 Z-소스 하이브리드 능동전력필터의 보상 알고리즘으로는 전류 동기 검출법이 사용되었다. 3상 220V/60Hz, 25A급 비선형 다이오드 부하 조건하에서 PSIM 시뮬레이션을 수행하였으며, 정상상태 및 과도상태에서의 제안된 시스템의 보상 성능을 파악하였다.

Keywords

References

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