Y結線モジュラーマルチレベル変換器における系統電圧不平衡補償方式

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2012/12/01

タイトル(英語): A Method of Voltage Unbalance Compensation on Y-connection Modular Multilevel Converter

著者名: 菊間　俊明（電力中央研究所），高崎　昌洋（電力中央研究所）

著者名(英語): Toshiaki Kikuma (Central Research institute of Electric Power Industry), Masahiro Takasaki (Central Research institute of Electric Power Industry)

キーワード: STATCOM，不平衡補償，瞬時値シミュレーション，マルチレベル変換器　　STATCOM，unbalance compensation，transient simulation，multilevel converter

要約(英語): A STATCOM is expected to be suitable for use as voltage control equipment for a distribution system that needs to be controlled to suppress the voltage deviation caused by an increase in the number of photovoltaic energy sources. A Y-connection MMC is a promising alternative for the STATCOM circuit topology. However, it has been known that the Y-connection MMC cannot achieve capacitor voltage balance between phases with unbalance current output for compensating system voltage unbalance. To solve this problem, we propose a novel method to control the capacitor voltage in the case of an unbalance current output.The proposed control involves feedforward and feedback zero sequence voltage control. The feedforward control prevents capacitor voltage unbalance between phases, which is caused by the unbalance current that the Y-connection MMC outputs. The feedback control cancels the remaining control error of the feedforward control.We verified the performance of the control through transient simulation. The Y-connection MMC with the proposed control can achieve capacitor voltage balance between phases even when the Y-connection MMC outputs an unbalance current.Additionally, we determined the maximum unbalance current output produced by the Y-connection MMC in relation to the rated capacitor voltage.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.132 No.12 （2012）

本誌掲載ページ: 1159-1166 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/132/12/132_1159/_article/-char/ja/