ELECTRICAL ARCHITECTURE FOR POWERING TRANSPORTATION REFRIGERATION UNIT

A power system architecture configured to power a transport refrigeration system () based on a determined an AC power requirement. The system () includes a generator power converter () configured to receive the generator three phase AC power () from an AC generator (), and provide a generator DC power (). The system () also includes a grid power converter () configured to receive the grid three phase AC power from a grid power source (), and provide a grid DC power (), an energy storage device (), the energy storage device () operable to provide a DC power () and connected to a variable DC bus, and a power management system () operably connected to direct power () the TRU () based on at least the AC power requirement.