Influence of DC Link Capacitance on Power Efficiency of Single-Phase Inverter

Yi Liu, Huai Wang, Meng Huang, Xiaoming Zha, Yushuang Liu

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

    2 Scopus citations

    Abstract

    The capacitor sizing for the capacitive DC link of a single-phase inverter is usually based on a pre-determined voltage ripple limitation, ripple current capability, and/or energy storage requirement. Nevertheless, it is lack of justifications of the pre-determined criteria. This paper aims to investigate the dependency between the DC-link capacitance and the converter-level efficiency of a single-phase inverter. The major sources of the converter power loss, i.e., IGBTs, capacitors, and inductors, are quantitatively modeled considering the varying DC-link voltage. It provides an additional dimension to optimize the capacitor selection for capacitive DC links. The theoretical analyses are verified by both simulations and experiments.

    Original languageBritish English
    Title of host publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1498-1504
    Number of pages7
    ISBN (Electronic)9781479973118
    DOIs
    StatePublished - 3 Dec 2018
    Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
    Duration: 23 Sep 201827 Sep 2018

    Publication series

    Name2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

    Conference

    Conference10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
    Country/TerritoryUnited States
    CityPortland
    Period23/09/1827/09/18

    Keywords

    • Controllability
    • DC link capacitor
    • Power loss
    • Voltage ripple

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