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鉄鋼用3レベルインバータドライブシステムの直流電圧センサ健全性オフライン自己チェック機能

鉄鋼用3レベルインバータドライブシステムの直流電圧センサ健全性オフライン自己チェック機能

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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: 2020/05/01

タイトル(英語): Offline Self-Check Function for DC Voltage Sensor of Three-Level AC Drive Systems Used in Steel Rolling Mills

著者名: 秋田 佳稔((株)日立製作所),田村 崇広((株)日立製作所),永田 寛((株)日立製作所)

著者名(英語): Yoshitoshi Akita (Hitachi, Ltd.), Takahiro Tamura (Hitachi, Ltd.), Hiroshi Nagata (Hitachi, Ltd.)

キーワード: 3レベルインバータ,直流電圧センサ,センサ自己チェック,冗長性,サスティナブル性,セルコンセプト  3 Level inverter,DC voltage sensor,sensor self-check,redundancy,sustainability,cell concept

要約(英語): We have developed a cell concept drive system, namely, an entire drive system is divided into minimum function cells, which enables to create a just-fit drive system by a suitable combination of these cells. Another advantage of this system is that partial renovation of each cell is possible, which is effective for extending product life. However, one important problem with this system is that some cells are used longer than the other cells, which increase their risk of failure.In this paper, we discuss how to reduce the above risk from the perspectives of self-detection of failure symptoms and preventing the occurrence of failure from spilling over to the entire drive system, by using an example of DC voltage sensor failure. First, we propose a fault diagnosis method with offline self-checking for DC voltage sensors. Then, we discuss a new control method that enables drive systems to work continuously, even when sensor fault occurs, by using a prediction signal with the other sensors, instead of a fault sensor signal. Finally, the effectiveness of the developed methods is demonstrated experimentally with a prototype drive system.

本誌: 電気学会論文誌D(産業応用部門誌) Vol.140 No.5 (2020) 特集:2019年産業応用部門大会

本誌掲載ページ: 342-348 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/140/5/140_342/_article/-char/ja/

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