TRANSPORT REFRIGERATION UNIT WITH MULTIPLE VOLTAGE SOURCE ARRANGEMENTS

A transport refrigeration unit (TRU) system (300) is provided and includes a high-voltage power source (310), a low-voltage power source (320), at least one of the high-voltage power source (310) and the low-voltage power source (320) including a fuel cell configured to provide electricity to the transport refrigeration unit (120), a first electrical load (330), which is optimally powered by the high-voltage power source (310), a second electrical load (340), which is optimally powered by the low-voltage power source (320) and an electrical distribution system (350) by which the high-voltage power source (310) is directly electrically connected to the first electrical load (330) and the low-voltage power source (320) is directly electrically connected to the second electrical load (340).