The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Detection of Aging Modules in Solar String with Jerk Function

Jerk 함수를 적용한 태양광 스트링 내의 노후화 모듈 검출 기법

  • Son, Han-Byeol (Dept. of Electrical Engineering, Chonnam National University) ;
  • Park, Seong-Mi (Dept. of Lift Design, Korea Lift College) ;
  • Park, Sung-Jun (Dept. of Electrical Engineering, Chonnam National University)
  • Received : 2019.03.22
  • Accepted : 2019.05.24
  • Published : 2019.10.20
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Abstract

In this study, major problems, such as licensing problems due to civil complaints, deterioration of facility period, and damage of modules, are exposed to many problems in domestic businesses. Particularly, the photovoltaic (PV) modules applied to early PV systems have been repaired and replaced over the past two decades, and a new module-based aging detection method is needed to expand the maintenance market and stabilize and repair power supplies. PV modules in a PV system use a string that is configured in series to generate high voltage. However, even if only one module of the solar modules connected in series ages, the power generation efficiency of the aged string is reduced. Therefore, we propose a topology that can measure the instantaneous PV characteristic curve to determine the aging module in the solar string and the aging judgment algorithm using the measured PV characteristic curve.

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References

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