Current measuring and magnetic core compensating apparatus and method
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United States of America Patent
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-
Jul 11, 1989
Grant Date -
N/A
app pub date -
Mar 4, 1987
filing date -
Mar 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
DC magnetic flux bias imposed on a magnetic core of a current transformer is compensated in response to an indication of the amplitude and duration of opposite polarity secondary winding current components. In a second embodiment, the magnetic bias is compensated by responding to the integral of the secondary current. The integral of the secondary current is a measure of the magnetic core flux variations. The durations of the positive and negative flux variations are compared.
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