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이현관(H.K Lee),이기식(G.S Lee),전영배(Y.B Jeon),나재형(J.H Na),정봉근(B.G Chung),강성인(S.I Kang),김은수(E.S Kim) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
The contactless power supply system for photovoltaic power genetration is constructed. The power supply system for photovoltaic power generation is composed of buck-boost converter for battery charging and resonant converter for the contact-less power transfer and buck converter. This converter has inherently several advantages such as zero voltage switching(ZVS) of switches in the primary and zero current switching(ZCS) of the rectified diodes in the secondary without any auxiliary circuit. we constructed the prototype of buck-boost convert er with 400W output capacity and resonant converter with 200W output capacity and buck converter with 100W output capacity.
태양광 발전 시스템을 위한 LLC 직렬공진컨버터 적용 무접점 전원장치
이현관(H.K Lee),이기식(G.S Lee),강성인(S.I Kang),공영수(Y.S Kong),김은수(E.S Kim),김윤호(Y.H Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
The high efficiency full-bridge LLC resonant converter using a contact-less transformer is proposed for the photovoltaic power generation system. For the series resonance with a series capacitor, the LLC resonant converter utilizes the leakage inductance and magnetizing inductance of a contact-less transformer. Unlike the conventional series resonant converter operated to the continuous resonant current at above resonance frequency, the proposed converter operates to the discontinuous resonant current at the narrow frequency control range below resonance frequency. Due to the discontinuous mode resonant current, the proposed converter can be achieved the zero voltage switching (ZVS) in the primary switches and the zero current switching (ZCS) in the secondary rectification diodes without any auxiliary circuit. In this paper, the experimental results of the proposed full-bridge LLC resonant converter using a contact-less transformer are verified on the simulation based on the theoretical analysis and the 150W experimental prototype.
이현관(H.K Lee),이기식(G.S Lee),정봉근(B.G Chung),공영수(Y.S Chung),김은수(E.S Kim),차인수(I.S Cha),윤정필(J.P Yoon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
Recently, the high frequency boost DC-DC converter has been widely used for the PCS system because of its small size and low cost. In this paper, the experimental results of the boost DC/DC converter using LLC series resonant converter are verified on the simulation based on the theoretical analysis and the 1㎾ experimental prototype.