Motor drive apparatus and refrigeration cycle apparatus
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United States of America Patent
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Nov 10, 2020
Grant Date -
Jan 11, 2018
app pub date -
Apr 13, 2015
filing date -
Apr 13, 2015
priority date (Note) -
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Abstract
A motor drive apparatus includes a power converter including an inverter having an upper arm and a lower arm, the inverter being configured to control an operation of an electric motor, and a drive controller configured to apply a dead time for preventing a short circuit between the upper arm and the lower arm, and to control the power converter. The drive controller is configured to control the power converter by switching a first mode in which a first correction value representing a time used to correct a voltage drop due to the dead time is employed to control the power converter, and a second mode in which a second correction value smaller than the first correction value is employed to control the power converter.
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