DC Fault Ride-Through Control of Half-Bridge MMCs for the HVDC Grid with DC Circuit Breakers

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): DC Fault Ride-Through Control of Half-Bridge MMCs for the HVDC Grid with DC Circuit Breakers

著者名: Atsushi Chiba (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Kenichiro Sano (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Yushi Koyama (Toshiba Infrastructure Systems & Solutio

著者名(英語): Atsushi Chiba (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Kenichiro Sano (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Yushi Koyama (Toshiba Infrastructure Systems & Solutions Corporation), Kei Sekiguchi (Toshiba Infrastructure Systems & Solutions Corporation), Takahiro Ishiguro (Toshiba Energy Systems & Solutions Corporation), Daichi Suzuki (Toshiba Energy Systems & Solutions Corporation)

キーワード: HVDC grid，modular multilevel converter (MMC)，DC circuit breaker，fault ride-through，DC current control

要約(英語): Operation delay of DC circuit breakers causes a voltage sag of several milliseconds in high-voltage DC (HVDC) grids. The DC voltage sag can cause an overcurrent in the DC side of the modular multilevel converter (MMC), resulting in halting the MMC. This study investigates a method to facilitate continuous operation of the half-bridge MMC during a DC voltage sag. The proposed method performs feedback control of the DC current during DC voltage sags by decreasing the DC and AC voltages of the half-bridge MMC. When the method is applied to symmetrical monopole HVDC systems, the MMC can maintain both its DC and AC currents within the rated range during the voltage sag caused by pole-to-ground faults. Simulation results obtained by a three-terminal HVDC grid verify the DC fault ride-through capability of the half-bridge MMC.

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: 281-288 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_22006950/_article/-char/ja/