An Overview of Photovoltaic Microinverters: Topology, Efficiency, and Reliability

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Abstract

This paper presents an overview of microinverters used in photovoltaic (PV) applications. Conventional PV string inverters cannot effectively track the optimum maximum power point (MPP) of the PV string due to the series configuration (especially, under partial shading conditions). In order to tackle this problem, microinverters make each PV panel operate at its own MPP so that the overall efficiency can be improved. In this paper, a detailed analysis is carried out among commercially-available microinverters in terms of topological structure and operational principle. Moreover, the latest products on the microinverter market and future trends of the microinverters are discussed in terms of efficiency and reliability.
Original languageEnglish
Title of host publicationProceedings of 2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
PublisherIEEE Press
Publication dateApr 2019
Pages1-6
Article number8862334
ISBN (Electronic)9781728132020
DOIs
Publication statusPublished - Apr 2019
Event2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG) - Soenderborg, Denmark
Duration: 23 Apr 201925 Apr 2019

Conference

Conference2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
CountryDenmark
CitySoenderborg
Period23/04/201925/04/2019
SeriesInternational Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG). Proceedings.
ISSN2166-9538

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Keywords

  • DC-AC inverter
  • DC-DC inverter
  • Flyback converter
  • Microinverter
  • PV application

Cite this

Yuan, J., Blaabjerg, F., Yang, Y., Sangwongwanich, A., & Shen, Y. (2019). An Overview of Photovoltaic Microinverters: Topology, Efficiency, and Reliability. In Proceedings of 2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG) (pp. 1-6). [8862334] IEEE Press. International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG). Proceedings. https://doi.org/10.1109/CPE.2019.8862334