부산대학교 도서관

With the increase in size of data centers and cloud computing, its power demand is also rising sharply. Traditionally, this power distribution is achieved at about 400VDC which is inconvenient because it requires very bulky conductor to prevent high copper loss. In this paper, a new power distribution architecture for data centers is reported where direct medium voltage distribution to data-center racks are achieved with SiC based inverter. The safety issues raised due to bringing medium voltage to the racks are addressed with contactless power transfer technology. The rectifier circuit handles a high current at 48V, and synchronous rectification would be suitable to boost the efficiency. In this paper, a GaN based synchronous rectification is studied. This proposed converter circuit is analyzed and simulated in PowerSim 11. A 3kW experimental setup is developed in the lab to verify the analysis and simulation performances of the converter, where the input is 1000V and the output is 48V.