Current-Sensor-Less Condition Monitoring of a DC-Link Capacitor in a PWM Inverter With a Six-Pulse Diode Rectifier

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2023/05/01

タイトル(英語): Current-Sensor-Less Condition Monitoring of a DC-Link Capacitor in a PWM Inverter With a Six-Pulse Diode Rectifier

著者名: Kazunori Hasegawa (Kyushu Institute of Technology), Tsukasa Kubo (Kyushu Institute of Technology), Yuto Hirose (Kyushu Institute of Technology)

著者名(英語): Kazunori Hasegawa (Kyushu Institute of Technology), Tsukasa Kubo (Kyushu Institute of Technology), Yuto Hirose (Kyushu Institute of Technology)

キーワード: condition monitoring，DC-link capacitors，three-phase inverters，six-pulse diode rectifiers，equivalent series resistance，capacitance

要約(英語): Condition monitoring helps improve the reliability of power electronic converters including their dc-link capacitors because it can predict converter failure and degradation. In practice, however, condition monitoring usually utilizes current sensors to obtain health condition, which is a constraint with regard to cost. This paper proposes a current-sensor-less condition monitoring method of a dc-link capacitor in a three-phase PWM inverter with a front-end six-pulse diode rectifier and a dc inductor. The proposed method measures both the capacitance and equivalent-series resistance (ESR) of the capacitor without using current sensors. Theoretical analysis reveals that the capacitor current is calculated using the three-phase ac source voltage and the dc inductor. Experimental results obtained from a 200-V laboratory system confirmed that both the ESR and capacitance changes were observed without using current sensors.

本誌: IEEJ Journal of Industry Applications Vol.12 No.3 （2023） Special Issue on “IPEC-Himeji 2022”

本誌掲載ページ: 548-554 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/12/3/12_22009135/_article/-char/ja/