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RISS 인기검색어
- 검색키워드
- 저자 : 문상필(S. P. Mun) (검색결과 44 건)
- 무료
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새로운 능동 클램핑방식을 이용한 연료전지용 DC-AC 인버터의 특성
김칠용(C.Y. Kim),조만철(M.C Cho),문상필(S.P. Mun),김영준(Y.J. Kim),Mutsuo Nakaoka,김홍삼(H.S. Kim) 한국조명·전기설비학회 2007 한국조명·전기설비학회 학술대회논문집 Vol.2007 No.11월
In the dissertation, a power conversion system for fuel cell is composed of a PWM inverter with LC filter in order to convert fuel cell voltage to a single phase 220[V]. In addition, new insulated DC-DC converters are proposed in order that fuel cell voltage is boosted to 300[V]. In this paper, it requires smaller components than existing converters, which makes easy control. The proposed DC-DC converter controls output power by the adjustment of phase-shift width using switch S5 and S6 in the secondary switch, which provides 93-97[%] efficiency in the wide range of output voltage. Fuel cell simulator is implemented to show similar output characteristics to actual fuel cell. Appropriate dead time td enables soft switching to the range where the peak value of excitation current in a high frequency transformer is in accordance with current in the primary circuit. Moreover, appropriate setting to serial inductance La reduces communication loss arisen at light-load generator and serge voltage arisen at a secondary switch and serial diode. Finally, TMS320C31 board and EPLD using PWM switching technique to act a single phase full-bridge inverter which is planed to make alternating current suitable for household.
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TMS320C31 DSP칩에 의해 제어되는 연료전지용 전력변환장치의 설계
문상필(S.P. Mun),권순걸(S.K. Kwon),서기영(K.Y. Suh),김영문(Y.M. Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
Recently, a fuel cell with low voltage and high current output characteristics is remarkable for new generation system. It needs both a DC-DC step-up converter and DC-AC inverter to be used in fuel cell generation system. Therefor, this paper, consists of an isolated DC-DC converter to boost the fuel cell voltage 380[VDC] and a PWM inverter with LC filter to convent the DC voltage to single phase 220[VAC]. Expressly, a tarred inductor filter with freewheeling diode is newly implemented in the output filter of the proposed high frequency isolated ZVZCS PWM DC-DC converter to suppress circulating current under the wide output voltage regulation range, thus to eliminate the switching and transformer turn-on/off over-short voltage or transient phenomena. Besides the efficiency of 93-9[%]is obtained over the wide output voltage regulation ranges and load variations.
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문상필(S.P. Mun),권순걸(S.K. Kwon),서기영(K.Y. Suh),김영문(Y.M. Kim),류재엽(J.Y. Ryu) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Recently, a fuel cell with low voltage and high current output characteristics is remarkable for new generation system. It needs both a DC-DC step-up converter and DC-AC inverter to be used in fuel cell generation system. Therefor, this paper, consists of an isolated DC-DC converter to boost the fuel cell voltage 380[VDC] and a PWM inverter with LC filter to convent the DC voltage to single-phase 220[VAC]. Expressly, a tapped inductor filter with freewheeling diode is newly implemented in the output filter of the proposed high frequency isolated ZVZCS PWM DC-DC converter to suppress circulating current under the wide output voltage regulation range, thus to eliminate the switching and transformer tum-on/off over-short voltage or transient phenomena. Besides the efficiency of 93-97[%]is obtained over the wide output voltage regulation ranges and load variations.
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