HEAT PUMP DEVICE, AIR CONDITIONER, AND REFRIGERATOR

It is an object to obtain a heat pump device that can efficiently feed a high-frequency current to an electric motor and effectively heat a compressor. The heat pump device includes a compressor 1 including a compression mechanism 7 configured to compress a refrigerant and a motor 8 configured to drive the compression mechanism 7, heat exchangers, an inverter 9 configured to apply a voltage to the motor 8, and an inverter control unit 11 configured to drive the inverter 9. The inverter control unit 11 includes a stagnation detecting unit 12 configured to determine whether heating of the compressor 1 is necessary and notify the determination result and a high-frequency-alternating-current-voltage generating unit 13 and a PWM-signal generating unit 15 configured to shift to a heating operation mode when the heating is necessary and, in the heating operation mode, generate PWM signals to provide, based on a heating time carrier signal having two or more frequencies, a period in which a reflux current flows.