Impedance detector apparatus and method

US9651592B2 · kind B2 · utility

Assignee

• Rockwell Automation Technologies, Inc. · US

Inventors

• Russel J. Kerkman · Milwaukee, US
• Ahmed Mohamed Sayed Ahmed · Mequon, US
• Brian J. Seibel · Grafton, US
• Shiv Kumar Gupta · Lucknow, IN
• Prathamesh R. Vadhavkar · Brown Deer, US

Key dates

• Filing date: Dec 3, 2013
• Grant date: May 16, 2017
• Expiry date: Jul 13, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/42
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Impedance detection methods and systems are presented for automatic computation of an electrical component impedance value at one or more specific frequencies of interest using quadrature voltage and current values generated by quadrature tracking filters based on sensed or measured voltage and current signals or values and a base frequency input.