電圧形PWM変換器のデッドタイムに起因する電圧誤差の解析と補償

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: 2014/04/01

タイトル(英語): Analysis and Compensation of Voltage Error Caused by the Dead Time in Three-Phase Voltage-Source Converters

著者名: 萬年　智介（東京工業大学 大学院理工学研究科 電気電子工学専攻），藤田　英明（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): Tomoyuki Mannen (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Hideaki Fujita (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology)

キーワード: デッドタイム，出力容量，パルス幅変調，電圧誤差，電圧形変換器　　dead time，output capacitance，pulse-width modulation，voltage error，voltage-source converters

要約(英語): This paper discusses the voltage error caused by the dead time in voltage-source PWM converters. The theoretical analysis in this paper derives the nonlinear voltage error paying attention to the parasitic output capacitance in each switching device. The analytical result reveals that the turn-off current or the switching current ripple strongly affects the voltage error. In addition, it is also clarified that the conventional compensation methods based on linear and three-level approximations are suitable for small and large current ripple conditions, respectively. A simple calculation method of current ripples is also developed to estimate the turn-off currents in three-phase PWM converters. A compensation method based on the analysis is developed and compared with three different conventional methods in experiments using a 200-V, 5-kW three-phase grid-connection converter. The analysis-based method exhibits a good compensation performance, having a lower voltage THD than the conventional methods over a wide operating range.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.134 No.4 （2014）

本誌掲載ページ: 412-420 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/134/4/134_412/_article/-char/ja/