Multi-Functional Bidirectional AC/DC T-type 3-Level Converter for Super UPS is investigated in this paper. The AC/DC converter is used as the interface between DC bus and energy source or load. According to the components (grid, gas turbines, AC loads) connected on the AC side, the AC/DC converter operates in AC voltage source mode, power source mode, or DC voltage source mode. A control scheme for the multi-functional bidirectional AC/DC converter is studied. Finally, the design of the AC/DC converter is verified by experiment on a 100 kW AC/DC converter prototype.