전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제62권2호
  • /
  • Pages.201-207
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  • 2013
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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3상 인버터의 계통연계 및 독립운전모드 전환 연구

Seamless Transfer Operation Between Grid-connected and Stand-Alone Mode in the Three-phase Inverter

  • Lee, Wujong (Dept. of Electrical Engineering, Cuingnam National University) ;
  • Jo, Hyunsik (Dept. of Electrical Engineering, Cuingnam National University) ;
  • Lee, Hak Ju (Korea Electri Power Research Institute) ;
  • Cha, Hanju (Dept. of Electrical Engineering, Cuingnam National University)
  • 투고 : 2012.08.10
  • 심사 : 2012.12.06
  • 발행 : 2013.02.01
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초록

This paper propose seamless transfer operation between grid-connected and stand-alone mode in the three-phase inverter for microgrid. The inverter operates grid-connected mode and stand-alone mode. Grid-connected mode is the inverter connected to grid and stand-alone mode is to deliver energy to the load from inverter at grid fault. When conversion from gird-connected to stand-alone mode, the inverter changes current control to voltage control. When grid restored, the inverter system is conversion from stand-alone to grid-connected mode. In this case, load phase and grid phase are different. Therefore, synchronization is essential. Thus Seamless transfer operation stand-alone to grid-connected mode. In this paper, propose sealmless transfer operation between grid-connceted and stand-alome mode, and this method is verified through simulation and experiment.

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참고문헌

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피인용 문헌

  1. A Study on the Efficiency Improvement Method of Photovoltaic System Using DC-DC Voltage Regulator vol.17, pp.7, 2016, https://doi.org/10.5762/KAIS.2016.17.7.704
  2. Renewable Energy Configuration Plan of Micro Grid in Gapa Island vol.34, pp.2, 2014, https://doi.org/10.7836/kses.2014.34.2.016