Signal Processing Design for Wide Bandwidth Hybrid Current Sensor based on Enhanced Analog Operational Amplifier Circuit

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2023/07/01

タイトル(英語): Signal Processing Design for Wide Bandwidth Hybrid Current Sensor based on Enhanced Analog Operational Amplifier Circuit

著者名: Philipp Ziegler (Institute for Power Electronics and Electrical Drives, University of Stuttgart), Michael Bura (Institute for Power Electronics and Electrical Drives, University of Stuttgart), Jorg Haarer (Institute for Power Electronics and Electrical Dr

著者名(英語): Philipp Ziegler (Institute for Power Electronics and Electrical Drives, University of Stuttgart), Michael Bura (Institute for Power Electronics and Electrical Drives, University of Stuttgart), Jorg Haarer (Institute for Power Electronics and Electrical Drives, University of Stuttgart), Philipp Marx (Institute for Power Electronics and Electrical Drives, University of Stuttgart), David Hirning (Institute for Power Electronics and Electrical Drives, University of Stuttgart), Jorg Roth-Stielow (Institute for Power Electronics and Electrical Drives, University of Stuttgart)

キーワード: current measurement，hybrid current sensor，rogowski coil，sensor fusion

要約(英語): Hybrid current sensors are suitable for wide bandwidth current measurement. They entail the fusion of two different measurement circuits, one for DC and low-frequency current and another for high-frequency current. Thus, the advantages of the different measurement principles are incorporated in one current sensor. Hybrid current sensors generate output signals through a superposition of the signals from the low-frequency and high-frequency current sensors. This is realized using analog signal processing by means of an analog operational amplifier circuit. Realization of the superposition of the frequency responses of the different measurement circuits to achieve a constant gain in the transition area is challenging. This study focused on the analog signal processing and its enhancement. Specifically, two possible signal processing approaches to increase the bandwidth based on the state-of-the-art realization of a low-pass filter were devised. These approaches were investigated using a simulation model. Frequency response measurements using a hybrid current sensor based on tunneling magnetoresistance sensors and a Rogowski coil were used for verification. The results show that by enhancing the signal processing, the bandwidth of the current sensors can be significantly increased.

本誌: IEEJ Journal of Industry Applications Vol.12 No.4 （2023） Special Issue on “IPEC-Himeji 2022”

本誌掲載ページ: 635-642 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/12/4/12_22007463/_article/-char/ja/