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직렬접속형 다이오드 정류기 시스템의 전류주입에 의한 고조파 저감
최세완(Sewan Choi),오준용(Junyong Oh),원충연(Chungyuen Won),김영석(Youngseok Kim) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
This paper proposes a new series-connected diode rectifier which draws sinusoidal Input currents. The proposed rectifier system IS configured by adding an auxiliary Circuit to the conventional 12-pulse series-connected diode rectifier and employing a current lnjection technique. A low k V A (O.02P. (PU)) active current source lnjects a triangular current Into the auxiliary circuit. The current injection results In near sinusoidal Input current from the utility with less than 1% THD. The resulting system IS suitable for high voltage and high power applications. Experimental results is provided from a 220V, 3kV A rectifier system.
3상 3선식 전력계통의 고조파 저감을 위한 새로운 직렬형 능동 필터 시스템
임승원(Seungwon Lim),한윤석(Yoonseok Han),김영석(Youngseok Kim),원충연(Chungyuen Won),최세완(Sewan Choi) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
This paper presents a new compensation method of series active power filter. The proposed method applied in the three-phase three-wire system can generate harmonic compensation voltage in front of the harmonic source. Futhermore, it is also expended to three-phase four-wire system considering zero-sequence voltage The compensation principle is described in detail. Experimental result show the validity of the proposed method in the three-phase three-wire system.
3상 3선식 시스템의 고조파 저감을 위한 직렬형 능동전력필터에 관한 연구
우원명(Wonmyung Woo),한윤석(Yoonseok Han),김영석(Youngseok Kim),원충연(Chungyuen Won),최세완(Sewan Choi) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
In this paper, we propose a series active power filter and a simple calculation method acqmring the reference voltage. A series active power filter is suitable to suppress harmonics produced by voltage type harmonic source such as a diode rectifier with filter capacitor on the DC side. The proposed series active power filter system is applied to 3-phase 3-wire power system including the voltage type harmonic source. Experimental results obtained from a laboratory model are shown to verify the viability and effectiveness of the proposed system.
불평형 전원전압을 보상하는 3상3선식 직렬형 능동전력필터에 관한 연구
오제훈(Jaehoon Oh),김영석(Youngseok Kim),한윤석(Yoonseok Han),원충연(Chungyuen Won),최세완(Sewan Choi) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
In this paper, a 3phase-3wire series active power filter compensating current harmonics and unbalanced source voltages is presented. The system is composed of series active power filter and shunt passive filters that are tuned 5th and 7th harmonics In this system, series active power filter improves harmonic compensation characteristics of the shunt passive filters and compensates the unbalanced source voltages<br/> In the proposed algorithm, compensation voltage for harmonic reduction is calculated by a performance function, and compensation voltage for the unbalanced source voltage is calculated in based on the synchronous reference frame<br/> Some results obtained from the experimental model using the proposed method are presented to demonstrate and confirm its validity.