ELECTRIC CURRENT SENSOR FOR DETECTING LEAKAGE CURRENT

An electric current sensor for detecting a leakage current from an electric vehicle charger. The current sensor includes a magnetic core having a gap formed therein, a first conductor wound around the magnetic core to form a first coil, a second conductor wound around the magnetic core to form a sec...

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Bibliographic Details
Main Authors HEIN, DAVID A, HURLBURT, ARTHUR, ANSARI, AJMAL IMRAN, CLEVELAND, RYAN, CONG, STEVEN, ARMENTO, ANTHONY, ZAMIESKI, MATTHEW
Format Patent
LanguageEnglish
Published 18.11.2021
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:An electric current sensor for detecting a leakage current from an electric vehicle charger. The current sensor includes a magnetic core having a gap formed therein, a first conductor wound around the magnetic core to form a first coil, a second conductor wound around the magnetic core to form a second coil, and a tunnel-magnetoresistance (TMR) sensor element arranged in the gap of the magnetic core. A difference between electric current flow in the first and second conductors produces a magnetic field in the gap of the magnetic core proportional to a leakage current, and the magnetic field produces a voltage in the TMR sensor element indicative of a value of the leakage current.
Bibliography:Application Number: US202015929620