Invention Grant
- Patent Title: Wideband contactless magnetoresistive-rogowski current sensing
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Application No.: US16073542Application Date: 2017-05-12
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Publication No.: US10782323B2Publication Date: 2020-09-22
- Inventor: Babak Parkhideh , Shahriar Jalal Nibir
- Applicant: University of North Carolina Charlotte
- Applicant Address: US NC Charlotte
- Assignee: University of North Carolina Charlotte
- Current Assignee: University of North Carolina Charlotte
- Current Assignee Address: US NC Charlotte
- Agency: Thomas Horstemeyer, LLP
- International Application: PCT/US2017/032415 WO 20170512
- International Announcement: WO2017/197269 WO 20171116
- Main IPC: G01R15/20
- IPC: G01R15/20 ; G01R15/18 ; G01R19/00

Abstract:
Various examples are provided for contactless wideband current sensing. A combination of magnetoresistive (MR) sensor and Rogowski coil outputs can be combined to provide current sensing from DC to 10 MHZ or more. In one example, a system includes a MR sensor that can provide an MR output voltage corresponding to a magnitude of the current through a trace; a Rogowski coil sensor that can provide a Rogowski output voltage corresponding to a magnitude of the current; and processing circuitry configured to generate an output current signal by aggregating the MR and Rogowski output voltages. In another example, a method includes conditioning an output from a MR sensor disposed adjacent to a trace carrying a current; conditioning an output from a Rogowski coil disposed adjacent to the trace; and aggregating the first and second conditioned signals to provide an output current signal corresponding to the current passing through the trace.
Public/Granted literature
- US20190064225A1 WIDEBAND CONTACTLESS MAGNETORESISTIVE-ROGOWSKI CURRENT SENSING Public/Granted day:2019-02-28
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