Zero standby power high efficiency hot plugging outlet for 380VDC power delivery system

The DC power delivery system is becoming an appealing research topic and real world solution due to its higher energy efficiency compared with AC delivery system. It has already been applied in data centers, commercial buildings, electrical vehicle charge stations and micro grid systems, etc. However, the electrical arc and related potential for fire and human injury is a main safety concern for the DC system. Besides, the inrush current caused by the load capacitance when hot plugged in to the DC system is also a major issue that must be considered when designing DC system. In this paper, a smart hot plugging outlet is proposed and developed by embedding solid state device into the DC outlet. Besides, over temperature and dual threshold over current protections have been also integrated to realize current limiting and trip function for each outlet. Analysis and experimental results based on 380V DC, which is a common voltage level adopted in data centers and DC micro grids, are discussed and presented.