Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study about The Hot-Swap Function for Prevention of Trouble in PLC Power Supplies

PLC 전원공급장치의 고장 방지를 위한 HOT-SWAP 기술에 관한 연구

  • 박종진 (포항공과대학 철강학과) ;
  • 이종재 (포항공과대학 전자전기학과) ;
  • 권봉환 (포항공과대학 전자전기학과)
  • Published : 2005.10.28
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Abstract

In this paper PLC Power Circuit with Hot-Swap Function is proposed for stable power supplies. The power modules of the proposed devices are implemented by CRM flyback converter using new synchronous rectifier circuit for high efficiency. By a variable switching frequency controller, this converter is operated with a reduced turn-on switching loss. Also, the load current in these power modules are shared by auto master / slave method using Outer loop. The proposed devices are analyzed in detail and optimized for high performance. Experimental results for a 100W power module at the variable switching frequency of 30$^{\sim}$70kHz were obtained to show the performance of the proposed device.

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