Lifetime Estimation of DC-Link Capacitors in Power Conversion Systems Based on Ripple Current

カテゴリ: 研究会(論文単位)

論文No: SPC23017,MD23017

グループ名: 【D】産業応用部門 半導体電力変換/【D】産業応用部門 モータドライブ合同研究会

発行日: 2023/01/23

タイトル(英語): Lifetime Estimation of DC-Link Capacitors in Power Conversion Systems Based on Ripple Current

著者名: Lee Kyo-Beum(Ajou University),Choi Hye-Won(Ajou University)

著者名(英語): Kyo-Beum Lee(Ajou University),Hye-Won Choi(Ajou University)

キーワード: Reliability|PCS|DC-link Current|Reliability|PCS|DC-link Current

要約(日本語): This paper analyzes the lifetime estimation of DC-link capacitors in power conversion systems based on ripple current. DC-link capacitors are the main components of power conversion systems and are used to balance power, suppress voltage ripple, and store short-term energy. The current flowing in the DC-link capacitors has a significant equivalent series resistance (ESR). It causes high thermal and electrical stresses degrading the performance and lifetime of the capacitors. The reduction methods of ripple current of DC-link capacitors using modified switching sequences are analyzed to extend the lifetime of the capacitors in this paper. The effectiveness and validity of each method are verified through simulation results.

要約(英語): This paper analyzes the lifetime estimation of DC-link capacitors in power conversion systems based on ripple current. DC-link capacitors are the main components of power conversion systems and are used to balance power, suppress voltage ripple, and store short-term energy. The current flowing in the DC-link capacitors has a significant equivalent series resistance (ESR). It causes high thermal and electrical stresses degrading the performance and lifetime of the capacitors. The reduction methods of ripple current of DC-link capacitors using modified switching sequences are analyzed to extend the lifetime of the capacitors in this paper. The effectiveness and validity of each method are verified through simulation results.

本誌: 2023年1月26日-2023年1月27日半導体電力変換/モータドライブ合同研究会-1

本誌掲載ページ: 91-96 p

原稿種別: 英語

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