A system for an attachment to existing A/C units in vehicles including a compressor assembly and a battery assembly is disclosed herein. The compressor assembly includes a hermetically sealed compressor that can be engaged without the need of the engine of a vehicle. The hermetically sealed compressor is powered by a battery of the battery assembly. The hermetically sealed compressor is mounted as an attachment or replacement to the existing A/C compressor of a vehicle. Furthermore, the hermetically sealed compressor is mounted using tee connectors and tubes. Additionally, check valves are added to allow the refrigerant within the additional tubes to flow in one direction. This system allows a user to engage the A/C unit of a car without needing the engine to be running.

During pre-air conditioning in a vehicle cabin, when consumed electric power exceeds use permission electric power while an auxiliary heating device is operating, an operation of the auxiliary heating device is stopped. In contrast, when the consumed electric power exceeds the use permission electric power while the auxiliary heating device is not operating, a rotation speed of an electric compressor of an air conditioner is restricted. Therefore, the temperature environment in the vehicle cabin is improved by continuing the pre-air conditioning of the air conditioner while reducing the consumed electric power by stopping the operation of the auxiliary heating device.

A transport refrigeration system includes a refrigeration unit including a controller configured to control the refrigeration unit; an electric power device configured to provide power to a refrigeration component of the refrigeration unit; an export power module (EPM) including: an EPM controller in communication with the controller; a power control device configured to receive power from the electric power device; an auxiliary device coupled to the power control device; wherein the controller is configured to communicate with the EPM controller to control power supplied from the electric power device to the auxiliary device.

There is provided an electric compressor capable of achieving an effective and stable noise reduction effect by making a ground pattern of a control device conductive to a housing at a short distance. An electric compressor 1 is configured so that a control board 17 and an HV filter board 18 of a control device 4 are accommodated in an accommodating section 9 configured in a housing 3, and the accommodating section 9 is closed by a cover member constituting a part of the housing 3. Ground patterns 26 to 28 configured on the control board 17 and the HV filter board 18 are made conductive to the cover member or a side wall 3A of the accommodating section 9.

A transportation refrigeration unit TRU and power system. The TRU (26) and power system including a compressor (58) configured to compress a refrigerant, an evaporator heat exchanger (76) operatively coupled to the compressor (58), and an evaporator fan (98) configured to provide return airflow (134) and flow the return airflow (134) over the evaporator heat exchanger (76). The system also includes a return air temperature RAT sensor (142) disposed in the return airflow (134) and configured measure the temperature of the return airflow (134), a TRU controller (82) operably connected to the RAT sensor (142) and configured to execute a process to determine an AC power requirement for the TRU (26) based on at least the RAT (142); a generator power converter (164) configured to receive a generator three phase AC power and provide DC power (165b) to an energy storage system (150), a power management system (124), the power management system (124) configured to direct power to the TRU (26) based on the AC power requirement.

A transportation refrigeration unit TRU (26) and power system. The TRU (26) and power system including a compressor (58) operatively coupled to an evaporator heat exchanger (76) and an evaporator fan (98) configured to flow a return airflow (134) over the evaporator (76). The system also includes a return air temperature RAT sensor (142) disposed in the return airflow (134) and configured measure the temperature thereof, a TRU controller (82) connected to the RAT sensor (142) that executes a process to determine an AC power requirement for the TRU (26) based on the RAT sensor (142); a generator power converter (164) configured to receive three phase AC power (163) from a three phase AC generator (162) and transmit a second DC power (165b) to an energy storage system (150); a power management system (124a) configured to receive three phase AC power (157) from at least the energy storage system (150) and generate a TRU DC power (129), and directing the TRU DC power (129) to the TRU system (26).

A vehicle refrigeration system includes a vehicle power device, and a vehicle refrigeration device coupled to the vehicle power device. The vehicle refrigeration device includes an evaporator configured to provide cooling based upon refrigerant fluid, a condenser configured to process the refrigerant fluid downstream from the evaporator, and a compressor configured to operate based upon a combined voltage, and transmit the refrigerant fluid from the evaporator to the condenser.

A transportation refrigeration unit for cooling a cargo compartment includes a compressor configured to compress a refrigerant, a compressor motor configured to drive the compressor, an evaporator heat exchanger operatively coupled to the compressor and an evaporator fan configured to provide return airflow from a return air intake and flow the return airflow over the evaporator heat exchanger. A drive unit is configured to deliver variable frequency electrical power between a minimum frequency and a maximum frequency to the compressor motor and the evaporator fan. A frequency of the electrical power is based on one or more sensed parameters of the transportation refrigeration unit.

A power system architecture configured to power a transport refrigeration system (20) based on a determined an AC power requirement. The system (20) includes a generator power converter (164) configured to receive the generator three phase AC power (163) from an AC generator (162), and provide a generator DC power (165). The system (20) also includes a grid power converter (184) configured to receive the grid three phase AC power from a grid power source (182), and provide a grid DC power (185), an energy storage device (152), the energy storage device (152) operable to provide a DC power (157) and connected to a variable DC bus, and a power management system (190) operably connected to direct power (195) the TRU (26) based on at least the AC power requirement.

A split trailer refrigeration unit for a tractor trailer includes a first portion (140A) having an electrically driven compressor (230), a condenser (210) and an evaporator (220). Also included is a second portion (140B), having an electrically driven compressor, a condenser and an evaporator. At least one of the first portion and the second portion include a set of power electronics (242) and a battery (240) connecting an electricity source to the corresponding electric compressor. The set of power electronics is configured to control power characteristics of power provided from the electricity source to the electric compressor. A frame (142) is configured to structurally mount each of the first portion and the second portion to a rear trailer door.