自励式変換器に起因するタービン発電機軸ねじれ振動の解析

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2014/11/01

タイトル(英語): Analysis of Turbine Generator Shaft Torsional Vibration Caused by Self-commutated Converters

著者名: 渡邊　政幸（九州工業大学），壹岐　浩幸（富士電機（株）），坂本　和磨（九州工業大学），三谷　康範（九州工業大学），瓜生　芳久（成蹊大学），加戸　良英（旭化成（株））

著者名(英語): Masayuki Watanabe (Kyushu Institute of Technology), Hiroyuki Iki (Fuji Electric Co., Ltd.), Kazuma Sakamoto (Kyushu Institute of Technology), Yasunori Mitani (Kyushu Institute of Technology), Yoshihisa Uriu (Seikei University), Yoshihide Kado (Asahi Kasei Corp.)

キーワード: 軸ねじれ振動，自励式変換器，タービン発電機，次数間高調波　　shaft torsional vibration，self-commutated converter，turbine generator，interharmonics

要約(英語): This paper presents a simple analysis tool for torsional vibration of the rotor shaft of turbine generator which is interconnected with a power system with self-commutated converters. The evaluation is based on the analysis of measurement data in the field and the instantaneous value based power system simulation. A number of power converters with large capacity are installed in industrial power systems. Especially, interharmonics originated from self-commutated converters cause the torsional vibration at the rotor shaft of rotating machines. The interaction between rotating machine and converters is known as sub-synchronous torsional interaction. The resonance between interharmonics from converters and the natural frequency of the rotor shaft cause the large torsional vibration, which leads to the shaft damage. In this paper, the influence of interharmonics to turbine generators is investigated. If there were air gap torque fluctuations with frequency near the natural frequency caused by interharmonics, which have frequency less than 100 Hz of sideband wave caused by asynchronous pulse width modulation, the rotor shaft might be damaged by the torsional vibration. In this paper, the emerging condition of the torsional vibration and the impact to the generator are investigated.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.134 No.11 （2014）

本誌掲載ページ: 900-907 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/ieejpes/134/11/134_900/_article/-char/ja/