Maximum Voltage Point Tracking for Partially-Shaded PV Modules

Woei Luen Chen, Zih Shan Lai, Wen Hsuan Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The output power of a photovoltaic (PV)string would decline drastically when a few of the PV modules in the string are subject to partial shading conditions (PSC). To restore part of power loss caused by the PSC, the output currents of the series PV modules should match to each other. In achieving this, a micro-converter is disposed at the terminal of each PV module and behaves like a current transformer. Once the best current of the PV string is determined, the micro-converter must contribute not only compatible current but as large terminal voltage as possible. An algorithm of maximum voltage point tracking (MVPT)is presented to maximize the micro-converter terminal voltage so that the operating point of the series PV modules can go toward respective maximum power points (MPP)and guarantee the power peak uniqueness. The experimental results show that the proposed MVPT for each PV module is autonomous and capable of tracking global maximum power point (GMPP)for a PV string.

Original languageEnglish
Title of host publicationICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1960-1963
Number of pages4
ISBN (Electronic)9788957083130
StatePublished - 05 2019
Externally publishedYes
Event10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia - Busan, Korea, Republic of
Duration: 27 05 201930 05 2019

Publication series

NameICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia

Conference

Conference10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia
Country/TerritoryKorea, Republic of
CityBusan
Period27/05/1930/05/19

Bibliographical note

Publisher Copyright:
© 2019 The Korean Institute of Power Electronics (KIPE).

Keywords

  • Global maximum power point (GMPP)
  • Maximum power points (MPP)
  • Partial shading conditions (PSC)

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