Power conversion device
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United States of America Patent
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Nov 17, 2015
Grant Date -
Aug 14, 2014
app pub date -
Sep 6, 2012
filing date -
Sep 6, 2011
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Abstract
An electric power conversion device comprises a conversion circuit having bi-directionally switchable plural pairs of switching elements connected to respective phases and converting an inputted AC power into an AC electric power. A first switching time is calculated using detected voltages detected by voltage sensors and an output command value. A second switching time is calculated in a form of a time which is a subtraction of the first switching time from a half period of a carrier and, using this time, control signals to switch on and off of the switching elements are generated.
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