Electric motor control device
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United States of America Patent
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Jun 13, 2017
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app pub date -
May 20, 2014
filing date -
May 20, 2014
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Abstract
An electric motor control device drives a power converter (30) by two-phase modulation drive based on calculation of a driving method setting and element loss calculation section (16) when an electric motor (4) is equal to or less than a predetermined rotational speed; and switches switching signals from a switching signal generation section (14) to switch a switching operation of the switching elements when a loss integrated value of a first switching element with a large switching loss or a second switching element exceeds a predetermined value.
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