Adaptive online filter for DC offset elimination
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United States of America Patent
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Sep 1, 2015
Grant Date -
Mar 19, 2015
app pub date -
Nov 24, 2014
filing date -
Jun 29, 2012
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Abstract
A phase angle detector with a PLL, a power converter, and a method for reducing offsets in an input signal, in which an adaptive offset processor selectively removes a DC offset component from the input signal to generate a modified signal including a fundamental frequency component and higher order harmonics of the input signal with the DC offset component removed, and the PLL provides a phase angle signal at least partially according to the modified signal.
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