Robust Active Damping Method for a PWM Converter Operating with an Unknown Inductance on the Power Grid

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: 2015/05/01

タイトル(英語): Robust Active Damping Method for a PWM Converter Operating with an Unknown Inductance on the Power Grid

著者名: Takahiro Saeki (YASKAWA ELECTRIC CORPORATION), Kozo Ide (YASKAWA ELECTRIC CORPORATION), Yoshiyasu Takase (YASKAWA ELECTRIC CORPORATION), Hideaki Iura (YASKAWA ELECTRIC CORPORATION), Shinya Morimoto (YASKAWA ELECTRIC CORPORATION), Tsuyoshi Hanamoto (LSSE,

著者名(英語): Takahiro Saeki (YASKAWA ELECTRIC CORPORATION), Kozo Ide (YASKAWA ELECTRIC CORPORATION), Yoshiyasu Takase (YASKAWA ELECTRIC CORPORATION), Hideaki Iura (YASKAWA ELECTRIC CORPORATION), Shinya Morimoto (YASKAWA ELECTRIC CORPORATION), Tsuyoshi Hanamoto (LSSE, Kyushu Institute of Technology)

キーワード: active damper，current control，grid-connected pulse-width modulation (PWM) converters，LCL filters

要約(英語): A PWM converter generally includes a low-pass filter to remove the high-frequency switching currents that flow into the power grid. If the inductance of the power grid greatly increases, the response of the automatic current regulator (ACR) deteriorates. When the ACR response deteriorates, the power grid is affected by low-frequency oscillations, making the power supply unstable. A type of low-pass filter is proposed to suppress the resonance, but several problems still remain. Active dampers achieve resonance suppression without a damping resistor. However, they need additional sensors to achieve a high performance and a sensorless type becomes more sensitive to the inductance changes in the power grid. In this study, we propose an observer-based active damper to control the resonance using an LCL filter. The deterioration in the current loop's response can be prevented, even if the power grid's inductance increases, preventing low-frequency disturbances. The proposed control method is achieved without needing to tune to the corresponding power grid's inductance.

本誌: IEEJ Journal of Industry Applications Vol.4 No.3 （2015） Special Issue on “IPEC-Hiroshima”

本誌掲載ページ: 277-285 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/4/3/4_277/_article/-char/ja/