Reliability assessment of single-phase gridconnected PV microinverters considering mission profile and uncertainties

Mohammad Hadi Zare, Mustafa Mohamadian, Huai Wang, Frede Blaabjerg

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

    8 Scopus citations

    Abstract

    Microinverters usually connect a PV panel to a Single-phase power grid. In such system, the input power is constant while the output power oscillates twice the line frequency. Thus, the input and output power differences should be stored in a storage component, which is typically an electrolytic capacitor. However, electrolytic capacitors are usually blamed for their short lifetime. Recently, some active power decoupling methods are introduced in the literature which can takes advantage of high reliable film capacitors. However, some extra switches and diodes are added to the microinverter which can influence the microinverter lifetime. This paper investigates the microinverter reliability according to mission profile where it is installed. To get more accurate results, uncertainties in both lifetime model and manufacturing process are considered. The effect of ambient temperature and solar irritation of two different places on the micro inverter lifetime is studied.

    Original languageBritish English
    Title of host publication8th Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2017
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages377-382
    Number of pages6
    ISBN (Electronic)9781509057665
    DOIs
    StatePublished - 24 Apr 2017
    Event8th Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2017 - Mashhad, Iran, Islamic Republic of
    Duration: 14 Feb 201716 Feb 2017

    Publication series

    Name8th Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2017

    Conference

    Conference8th Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2017
    Country/TerritoryIran, Islamic Republic of
    CityMashhad
    Period14/02/1716/02/17

    Keywords

    • Lifetime
    • Microinverter
    • Mission profile
    • Monte Carlo
    • Reliability

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