A heat pump device includes: a compressor (1) that compresses a refrigerant; a motor (8) that drives the compressor; a wiring switching unit (33) that switches a wiring structure of the motor (8); an inverter (9) that applies a desired voltage to the motor...

The invention relates to a heat pump. The heat pump has a compressor and an electronically commutated electric motor for driving the compressor. The heat pump also has a power output stage connected to the electric motor for supplying current to the electr...

An object is to obtain a heat pump device that stably heats a compressor regardless of the stop position of a rotor of a motor. The present invention is a heat pump device that includes a compressor 1 including a compression mechanism 7 and a motor 8, a he...

An object is to prevent a motor and an inverter from being damaged due to the flow of a large current when a compressor is heated by supplying a high-frequency AC voltage to the compressor. The heat pump device includes an inverter control unit outputting ...

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 ...

An object of the present invention is to efficiently heat a refrigerant retained in a compressor. An inverter control unit 12 generates six drive signals corresponding to the respective switching elements 16a to 16f of the inverter 9, and outputs the gener...

An apparatus for controlling a vehicle, which includes: a battery (3) capable of being charged from an external power source (EPS); a power generation unit (PGU) capable of charging the battery (3); an electric heater (12) configured to produce heat with e...

An object of the present invention is to heat a refrigerant accumulated in a compressor efficiently. A phase switching unit 19 switches a phase ¸1 and a phase ¸2 different from the phase ¸1 substantially by 180 degrees and outputs the phase, synchronous...

An electric compressor controller includes a compressor (11) that compresses refrigerant of an air conditioning system; a motor (12) that drives the compressor; an inverter (13) that selectively control switching elements (TR1-TR6) based on PWM pulse signa...

The fuel cell complex (10) is temperature controlled by a heat exchanger (11) connected to a heating/cooling circuit (30) through a pump (39) and a second air conditioning cooling circuit (20) through a 3-way valve (38) for additional cooling.