Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Battery Discharge System Configuration using Photovoltaic Simulator and PCS

태양광 시뮬레이터와 PCS를 이용한 배터리 방전시스템 구성

  • 정다움 (전남대학교 전기공학과) ;
  • 박성민 (주식회사 엘탑) ;
  • 박성미 (한국승강기대학교 승강기공학부) ;
  • 박성준 (전남대학교 전기공학과) ;
  • 문승필 (한국전력공사 전력연구원)
  • Received : 2020.04.16
  • Accepted : 2020.05.22
  • Published : 2020.06.30
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Abstract

Recently, In the production line of batteries, charge and discharge tests are essential to verify battery characteristics. In this case, the battery charging uses a unidirectional AC/DC converter capable of output voltage and current control, and the discharge uses a resistive load. Since this method consumes energy during discharge, it must be replaced with a bi-directional AC/DC converter system capable of charging and discharging. Although it is difficult to replace the connected inverter part of the bi-directional AC/DC converter system due to the high cost, the spread of the solar-connected inverter rapidly increases as the current solar supply business is activated, and thereby the solar-connected type Inverter prices are plunging. If it can be used as a power converter for battery discharge without program modification of the solar-powered inverter, it will have competition. In this paper, propose a new battery discharge system using a combination of a photovoltaic DC/DC simulator and photovoltaic PCS using a battery to be used as a power converter for battery discharge without program modification of a low-cost photovoltaic inverter. In addition, propose an optimal solar characteristic curve for the stable operation of PCS. The validity of the proposed system was verified using a 500[W] class solar DC/DC simulator and a solar PCS prototype.

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References

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