Reliability-oriented design and analysis of input capacitors in single-phase transformer-less photovoltaic inverters

Huai Wang, Yongheng Yang, Frede Blaabjerg

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

    35 Scopus citations

    Abstract

    While 99% efficiency has been reported, the target of 20 years of service time imposes new challenge to cost-effective solutions for grid-connected photovoltaic (PV) inverters. Aluminum electrolytic capacitors are the weak-link in terms of reliability and lifetime in single-phase PV systems. A reliability-oriented design guideline is proposed in this paper for the input capacitors in single-phase transformer-less PV inverters. The guideline ensures that the service time requirement is to be accomplished under different power levels and ambient temperature profiles. The theoretical analysis has been demonstrated by a 1 kW single-phase PV inverter.

    Original languageBritish English
    Title of host publication2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
    Pages2929-2933
    Number of pages5
    DOIs
    StatePublished - 2013
    Event28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013 - Long Beach, CA, United States
    Duration: 17 Mar 201321 Mar 2013

    Publication series

    NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

    Conference

    Conference28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
    Country/TerritoryUnited States
    CityLong Beach, CA
    Period17/03/1321/03/13

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