Series/Parallel Switching Circuits Using Power MOSFETs for Photovoltaic Modules

Masamichi Tanemo, Koki Matsudate, Shinichi Nomura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work discusses the feasibility of the series/parallel switching circuits using power MOSFETs in order to minimize the output power reduction of the photovoltaic power system due to the partial shading by connecting the shaded panels to the adjacent panel in parallel. From the experimental results: 1) When one of the photovoltaic panels is shaded at least, 50% of the reduction ratio of the solar radiation intensity becomes the lower limit of the threshold values for the series/parallel switching control. 2) The effect of the series/parallel switching control can be more expected when more than two of the photovoltaic panels are shaded. However, the sum of the solar radiation intensity 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 by the bypass current measurements. The authors developed a switching circuit module prototype and carried out the operation tests using three photovoltaic panels. From the results, the switching circuit module successfully detects the partial shading conditions and switches from the series operation mode to the parallel operation mode.

Original languageEnglish
Title of host publication2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2022-2029
Number of pages8
ISBN (Electronic)9784886864055
DOIs
Publication statusPublished - 22 Oct 2018
Event8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 - Niigata, Japan
Duration: 20 May 201824 May 2018

Publication series

Name2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018

Conference

Conference8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
CountryJapan
CityNiigata
Period20/05/1824/05/18

    Fingerprint

Keywords

  • Partial shading detection
  • photovoltaic power system
  • power MOSFET
  • series/parallel switching control

Cite this

Tanemo, M., Matsudate, K., & Nomura, S. (2018). Series/Parallel Switching Circuits Using Power MOSFETs for Photovoltaic Modules. In 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 (pp. 2022-2029). [8507911] (2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/IPEC.2018.8507911