Methods for controlling electrical inverters and electrical inverters and systems using the same
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United States of America Patent
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Nov 8, 2016
Grant Date -
Jul 10, 2014
app pub date -
Dec 27, 2013
filing date -
Jan 7, 2013
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Abstract
A system for generating a duty cycle control signal for controlling an inverter power train providing an output current waveform to a grid operating with a grid voltage waveform compares a reference current waveform shaped to the grid voltage waveform with the output current waveform to generate an error signal. The error signal is used to generate a corrective control action signal, which is combined with a feed-forward signal representing a nominal duty cycle generated with a feed-forward function. The combination of the feed-forward signal and the corrective control action signal provide the duty cycle control signal.
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