CPC H02M 1/009 (2021.05) [B60L 53/22 (2019.02); H02J 7/06 (2013.01); H02M 1/4208 (2013.01); H02M 1/44 (2013.01); H02M 3/33561 (2013.01); H02M 3/33584 (2013.01); H02M 7/797 (2013.01); H02P 27/08 (2013.01); B60L 2210/40 (2013.01); H02J 2207/20 (2020.01)] | 20 Claims |
1. A power converter apparatus comprising:
a Direct Current (DC) bus configured to be connected to a power source;
a first switching bridge and a second switching bridge, both connected to the DC bus and generating pulse-width-modulated (PWM) voltages to non-isolated outputs of the first switching bridge and the second switching bridge; and
a transformer having a primary winding connected across the non-isolated outputs of the first switching bridge and the second switching bridge and having a secondary winding connected to isolated outputs, wherein:
in a non-isolated mode, the first switching bridge and the second switching bridge are controlled to operate in a parallel mode, and power is transferred between the DC bus and a non-isolated load coupled to the non-isolated outputs and power bypasses the transformer due to the parallel operation of the first switching bridge and the second switching bridge; and
in an isolated mode, the first switching bridge and the second switching bridge are controlled to operate in a full bridge mode, and power is transferred between the DC bus and a load coupled to the isolated outputs through the transformer.
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