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자료유형
학술대회자료
저자정보
저널정보
전력전자학회 ICPE(ISPE)논문집 2007년 ICPE논문집
발행연도
2007.10
수록면
232 - 237 (6page)

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Linear accelerator and Beam Transfer Line magnet power supply (MPS) in Pohang Accelerator Laboratory have been upgraded from convention scheme to switching scheme for the stable beam injection and the 4<SUP>th</SUP> generation light source research. New MPS consists of two-main power board (MPB), which are regulator, CPU and control power boards. The size of each board is only 100㎜ × 240㎜. The MPB consists of full-bridge scheme switch. The functions of the one MPB are that they operate as two parallel buck (PB) DC/DC converter. Switching frequency is 42 ㎑ at MPB. Two-MPB is operated as synchronous four-PB DC/DC converter. Input and output of the MPS are 3p 35V<SUB>ac</SUB> and 80A<SUB>dc</SUB>/50V<SUB>dc</SUB>, respectively. Its resolution and stability are 16-bit and < 20ppm, respectively. To eliminate generated switching noise from main switch, specially designed 2-stage LC output filter is adopted in output station. The 1<SUP>st</SUP>-stage filter is included in the MPB. The 2<SUP>nd</SUP>-stage filter is located in output stage of MPB as separated PCB. High accuracy CT for sensing of output current is located in the su㎜ing stage of synchronous four-PB type DC/DC converter. This paper describes the design concept and performance of the MPS with four-phase buck type DC/DC converter.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. BASIC CONCEPT OF FOUR-PHASE BUCK TYPE DC/DC CONVERTER
Ⅲ. MAGNET POWER SUPPLY BY FOUR-PHASE BUCK TYPE DC/DC CONVERTER
Ⅳ. CONCLUSION
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