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Half-bridge 직렬공진 컨버터 적용 무접점 전원장치의 효율분석
이현관(Hyun-Kwan Lee),김은수(Eun-Soo Kim),김윤호(Yoon-Ho Kim),송환국(Hwan-Kuk Song),강성인(Sung-In Kang) 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
Comparing with the conventional transformer without the air gap, a contact-less transformer with the large air-gap (4.8㎝) between the long primary winding and the secondary winding has the increased leakage inductance and the reduced magnetizing inductance. By the increased leakage inductance and the reduced magnetizing inductance on the primary of the contact-less transformer, a good deal of the primary current circulates through magnetizing inductance, which results in a massive loss in contact-less power supply (CPS). In this paper, the efficiency characteristics of the contact-less power supply using a series resonant converter is analyzed and simulated. The results are verified on the simulation based on the theoretical analysis and the 2.5㎾ experimental prototype.
이현관(Hyun-Kwan Lee),김은수(Eun-Soo Kim),차인수(In-Su Cha),윤정필(Jeong-Phil Yoon),송환국(Hwan-kuk Song),강성인(Sung-In Kang),정봉근(Bong-Geon Chung) 전력전자학회 2006 전력전자학술대회 논문집 Vol.- No.-
Recently, the isolated high frequency boost DC/DC converter has been used widely for PCS (Power Conditioning System) because of the requirements of small size and low cost. However, the high frequency isolated boost DC/DC converters applied the conventional voltage-fed converter and current-fed converter have some problems like high conduction losses and high surge voltage due to high circulating current and leakage inductance, respectively. To improve these problems, a novel secondary LLC (called SLLC) series resonant converter is proposed in this paper and its theoretical analysis, its operating waveforms, simulation and experimental results for a boost DC/DC converter using SLLC series resonant topology verifies the proposed topology. 800W experimental prototype is designed and tested.