Patent ID: 11932076
Assignee: CARRIER CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  F  H  Y | IPC B  F

Claim 0:
1. A transportation refrigeration unit (TRU) and power system comprising:
a compressor configured to compress a refrigerant, the compressor having compressor motor configured to drive the compressor;
an evaporator heat exchanger operatively coupled to the compressor;
an evaporator fan configured to provide return airflow from a return air intake and flow the return airflow over the evaporator heat exchanger;
a return air temperature (RAT) sensor disposed in the return airflow and configured measure the temperature of the return airflow;
a TRU controller operably connected to the RAT sensor and configured to execute a process to determine an alternating current (AC) power requirement for the TRU based on at least the RAT;
a power management system, the power management system configured to receive at least one of:
a first three phase AC power from an AC generator coupled to an axel or wheel hub; and
a second three phase AC power from a generator power converter that coverts the first three phase AC power;
an energy storage system configured to provide or receive a third three phase AC power to or from the power management system;
and
wherein the power management system directs power to the TRU based at least in part on the AC power requirement;
wherein the energy storage system comprises an energy storage device and a DC/AC converter configured to provide the third three phase AC power to the power management system based at least in part on the AC power requirement and an AC/DC converter configured to convert at least a portion of the third three phase AC power to DC power to supply the energy storage device;
the power management system configured to synchronize and combine the third three phase AC power from the energy storage system and the at least one of the first three phase AC power and the second three phase AC power and direct the combined three phase AC power to the TRU.