MOTOR DRIVE DEVICE AND OUTDOOR UNIT OF AIR-CONDITIONING APPARATUS, WHICH INCLUDES THE SAME
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United States of America Patent
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Issued Date -
Apr 18, 2024
app pub date -
May 11, 2021
filing date -
May 11, 2021
priority date (Note) -
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Abstract
A motor drive device includes: an inverter circuit configured to drive a motor; a drive circuit to which a control voltage is applied, the drive circuit being configured to output a drive signal to the inverter circuit; and a relay configured to stop application of the control voltage to the drive circuit. The relay is configured to detect a motor current that is output from the inverter circuit to the motor, and to stop application of the control voltage to the drive circuit when the motor current reaches a first threshold or higher that is determined in advance.
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