複数台の高圧電動機を駆動する中間周波絶縁形モジュラー・マルチレベル・DSBCシステムの検討

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: 2016/12/01

タイトル(英語): Feasibility Study of a Modular Multilevel DSBC Conversion System Equipped With Medium-Frequency Isolation Transformers for Driving Multiple Medium-Voltage Motors

著者名: 岡崎　佑平（東京工業大学 工学院電気電子系），赤木　泰文（東京工業大学 工学院電気電子系）

著者名(英語): Yuhei Okazaki (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: コンデンサ電圧，中間周波数絶縁変圧器，複数台の高圧電動機駆動，マルチレベル変換器　　capacitor voltage，medium-frequency isolation transformers，multiple medium-voltage motor drives，multilevel converters

要約(英語): This paper provides an intensive discussion on a modular multilevel cascade conversion system based on double-star bridge cells (DSBCs), which is referred to simply as a DSBC conversion system. This conversion system is defined as a power conversion system consisting of multiple DSBC converters and medium-frequency isolation transformers. A voltage fluctuation appearing across the floating dc capacitor of each bridge cell is investigated. Theoretical and numerical considerations regarding both circulating currents and the medium frequency lead to a reduction in the peak-to-peak voltage fluctuation. The system is therefore applicable to a wide variety of motor drives with small capacitors. Simulated waveforms verify principles of operation, which are obtained from the 6-kV, 5-MW system consisting of a single DSBC converter for grid connection, two DSBC converters for three-phase star-connected RL loads, and two 560-Hz transformers for galvanic isolation among the grid and the loads.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.136 No.12 （2016）

本誌掲載ページ: 1005-1014 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/136/12/136_1005/_article/-char/ja/