Redundant power supply apparatus for multi-input it loads

A power system for a data center, the power system comprising:

• a first rack having a first rack first input and a first rack second input;
• a second rack having a second rack first input and a second rack second input;
• a third rack having a third rack first input and a third rack second input;
• a first power converter coupled to the first rack first input and the second rack first input, the first power converter being configured to provide a first portion of first DC power to the first rack and a second portion of the first DC power to the second rack, the first power converter being configured to adjust a first output voltage of the first power converter based at least in part on the first DC power, wherein the first power converter is not coupled to the third rack;
• a second power converter coupled to the first rack second input and the third rack first input, the second power converter being configured to provide a first portion of second DC power to the first rack and a second portion of the second DC power to the third rack, the second power converter being configured to adjust a second output voltage of the second power converter based at least in part on the second DC power, wherein the second power converter is not coupled to the second rack;
• a first asymmetric-conductance device coupled between the first power converter and the first rack;
• a second asymmetric-conductance device coupled between the second power converter and the first rack.