位相シフトPWMを適用したモジュラー・マルチレベル・カスケード変換器（MMCC-DSCC）の三角波キャリア周波数の検討

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: 2014/10/01

タイトル(英語): Discussion on Triangular-Carrier Frequencies of a Modular Multilevel Cascade Converter Based on Double-Star Chopper Cells (MMCC-DSCC) with Phase-Shifted PWM

著者名: 関口　慧（東京工業大学 大学院理工学研究科 電気電子工学専攻），新田　将大（東京工業大学 大学院理工学研究科 電気電子工学専攻），萩原　誠（東京工業大学 大学院理工学研究科 電気電子工学専攻），赤木　泰文（東京工業大学 大学院理工学研究科 電気電子工学専攻）

著者名(英語): Kei Sekiguchi (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Masahiro Nitta (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Makoto Hagiwara (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Hirofumi Akagi (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology)

キーワード: モジュラー・マルチレベル・カスケード変換器（MMCC），系統連系用変換器，位相シフトPWM，三角波キャリア周波数　　Modular multilevel cascade converters (MMCC)，grid-connected converters，phase-shifted PWM，triangular-carrier frequency

要約(英語): This paper presents a theoretical discussion on triangular-carrier frequencies of a modular multilevel cascade converter based on double-star chopper cells (MMCC-DSCC, hereafter referred to as the DSCC) with phase-shifted PWM. The DSCC consists of multiple cascaded chopper cells and a center-tapped inductor per leg. Low voltage steps bring significant reductions in harmonic voltage and current to BTB (back-to-back) or HVDC (high-voltage direct-current) systems using two DSCCs. When the DSCC adopts the 6-kV GCTs (gate-commutated thyristors) that are commercially available in the market, the switching frequency should be less than 200Hz to improve conversion efficiency. Theoretical analysis developed in this paper reveals that the most suitable triangular-carrier frequency is 125Hz or 175Hz. Simulated waveforms obtained from a three-phase 66-kV, 200-MW DSCC are included to verify this analysis. The analytical and simulated results agree well with each other.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.134 No.10 （2014）

本誌掲載ページ: 890-903 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/134/10/134_890/_article/-char/ja/