Change in Circuit Configuration of Photovoltaic Modules Using Series/Parallel Switching Circuits Composed of Power MOSFETs

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2020/01/01

タイトル(英語): Change in Circuit Configuration of Photovoltaic Modules Using Series/Parallel Switching Circuits Composed of Power MOSFETs

著者名: Masamichi Tanemo (School of Science and Technology, Meiji University), Koki Matsudate (School of Science and Technology, Meiji University), Shinichi Nomura (School of Science and Technology, Meiji University)

著者名(英語): Masamichi Tanemo (School of Science and Technology, Meiji University), Koki Matsudate (School of Science and Technology, Meiji University), Shinichi Nomura (School of Science and Technology, Meiji University)

キーワード: partial shading detection，photovoltaic power system，power MOSFET，series/parallel switching control

要約(英語): This work discusses the feasibility of series/parallel switching circuits with power MOSFETs to minimize the reduction in the output power of photovoltaic power systems due to the partial shading problems by connecting shaded panels and adjacent panels in parallel. The following observations were made on the basis of the experimental results: 1) When at least one of the photovoltaic panels is shaded, 50% of the reduction ratio of the solar radiation intensity becomes the lower limit of the threshold value for the series/parallel switching control. 2) The effect of the series/parallel switching control can be expected to be higher when more than two of the photovoltaic panels are shaded. However, the sum of the solar radiation intensities applied to the panels in the parallel circuit should be less than 150% of the maximum intensity of the photovoltaic power system. 3) The shaded panel, which should be connected to the adjacent panel in parallel, can be detected using bypass current measurements rather than direct measurements of the solar radiation intensity. The authors developed a prototype of a switching circuit module and performed the operation tests by using three photovoltaic panels. The results showed that the switching circuit module successfully detects the partial shading conditions and switches from the series operation mode to the parallel operation mode.

本誌: IEEJ Journal of Industry Applications Vol.9 No.1 （2020）

本誌掲載ページ: 73-81 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/9/1/9_73/_article/-char/ja/