Heat pump device, air conditioner, and freezer
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 31, 2020
Grant Date -
Nov 20, 2014
app pub date -
Jan 4, 2012
filing date -
Jan 4, 2012
priority date (Note) -
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Abstract
A heat pump device includes a compressor including a motor, a heat exchanger, an inverter, and an inverter control unit. The inverter control unit generates a drive signal for the inverter. When the compressor is heated, the inverter control unit applies, to the motor, a high-frequency voltage with which the motor cannot be rotationally driven; estimates a magnetic pole position indicating a stop position of a rotor of the motor; determines an amplitude and a phase of a voltage command based on an estimation result of the magnetic pole position and a necessary amount of heat, and generates a drive signal.
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