Power electronic systems and electric drive train systems having multiple modes of operation

An electric drive train system comprising:

• a battery;
• an electric motor comprising windings;
• and
• a power electronics system comprising:
• a first inverter package comprising a first housing defining a first enclosure and three metal-oxide-semiconductor field-effect transistor (MOSFET) pairs disposed within the first enclosure, wherein:
• an output of each MOSFET of each MOSFET pair are coupled together and electrically coupled to a first end of an individual winding of the electric motor, and
• the first housing comprises a first inlet and a first outlet for receiving and removing a dielectric cooling fluid, to and from the first enclosure, respectively, such that the MOSFET pairs are cooled by immersion within the dielectric cooling fluid;
• a second inverter package comprising a second housing defining a second enclosure and three insulated-gate bi-polar transistor (IGBT) pairs disposed within the second enclosure, wherein:
• an output of each IGBT of each IGBT pair are coupled together and electrically coupled to a second end of an individual winding of the electric motor, and
• the second housing comprises a second inlet and a second outlet for receiving and removing the dielectric cooling fluid to and from the second enclosure, respectively, such that the IGBT pairs are cooled by immersion within the dielectric cooling fluid;
• a state selector circuit operable to selectively electrically couple the second ends of the windings of the electric motor together;
• and
• a charger input circuit operable to receive a first DC voltage, wherein the charger input circuit, the windings of the electric motor, the MOSFET pairs of the first inverter package are operable to convert the first DC voltage to a second DC voltage, and the second DC voltage is greater than the first DC voltage.