Rogowski current with active capacitance compensation

US10345342B2 · kind B2 · utility

Assignee

• Dr. Ing. h.c. F. Porsche AG · DE

Inventors

• Stefan Götz · Forstern, DE
• Hermann Dibos · Remchingen, DE

Key dates

• Filing date: Dec 11, 2017
• Grant date: Jul 9, 2019
• Expiry date: Jan 1, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F38/30
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and a sensor for measuring a time derivative of an AC current flowing through a measurement object are presented, wherein a Rogowski-Steinhaus-Chattock coil is aligned with the measurement object and at least one partitioning line is drawn into coil turns of the Rogowski-Steinhaus-Chattock coil and minimizes a capacitive coupling of the coil turns of the Rogowski-Steinhaus-Chattock coil among one another and/or to at least one further electrical line by virtue of the fact that an electrical potential corresponding to the electrical potential of the coil turns of the Rogowski-Steinhaus-Chattock coil is impressed on the at least one partitioning line by means of an active feedback.