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

The Korean Institute of Power Electronics (전력전자학회)
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Irradiation-Adaptive Operating Algorithm of Differential Power Processing Module for Photovoltaic Panels Including Multiple Strings

복수의 스트링을 포함한 태양광 패널에 적용 가능한 차동 전력 조절기의 조사량 적응형 동작 알고리즘

  • Kim, Geun-Wook (School of Electrical & Computer Engineering, UNIST) ;
  • Kim, Mina (School of Electrical & Computer Engineering, UNIST) ;
  • Jung, Jee-Hoon (School of Electrical & Computer Engineering, UNIST)
  • Received : 2021.08.25
  • Accepted : 2021.11.14
  • Published : 2022.02.20
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Abstract

The differential power processor (DPP) system is used to prevent a decrease in the total power generation due to the partial shading of photovoltaic modules. Compared with traditional series strings and full power processing (FPP) converter solutions, the DPP converter system shows advantages in terms of modularization process, volume, and transformation losses. However, the system has a limitation in that the power generation process of differential power processors produces lower power under certain irradiation conditions. This paper proposes a structure and operating algorithm for differential power processing modules that can use a single power converter for multiple strings. The operational algorithm for the differential power regulators allows the maximum power generation to be maintained in comparison with conventional series-connected and differential power processing methods even under various partial shading conditions. The operation algorithm of the proposed DPP is verified by Matlab/Simulink simulations.

Keywords

Acknowledgement

이 논문은 2021년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임. (No. 2019R1A2B5B01069665)

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