Bidirectional three-phase direct current (DC)/DC converters

A bidirectional three-phase direct current (DC)/DC converter comprising:

• a primary side comprising:
• a first DC bus having a positive side and a negative side;
• a first set of half bridge rectifiers connected between the positive side and the negative side of the first DC bus, where M is a positive integer that is greater than or equal to three;
• a first set of M resonant tanks, each resonant tank of the first set of M resonant tanks being connected to a respective half bridge rectifier of the first set of M half bridge rectifiers, each resonant tank comprising a resonant capacitor and a resonant inductor, the resonant capacitors being delta-connected;
• and
• M transformers, each transformer having a primary side that is connected to a respective resonant tank of the first set of M resonant tanks, the primary sides of the transformers being Y-connected;
• and
• a secondary side comprising:
• a second DC bus having a positive side and a negative side;
• a second set of half bridge rectifiers connected between the positive side and the negative side of the second DC bus;
• and
• a second set of M resonant tanks, each resonant tank of the second set of M resonant tanks being connected to a respective half bridge rectifier of the second set of M half bridge rectifiers, each resonant tank of the second set of M resonant tanks comprising a resonant capacitor and a resonant inductor, the resonant capacitors of the second set of M resonant tanks being delta-connected, each transformer having a secondary side that is connected to a respective resonant tank of the second set of M resonant tanks, the secondary sides of the transformers being Y-connected, wherein a gain in a forward direction of DC/DC conversion is substantially equal to a gain in a reverse direction of DC/DC conversion.