The dramatic loss due to power blackout calls for higher surety power to the information infrastructure and the industry ever than before. The concept of Super Uninterruptable Power Supply (Super UPS), which is based on the DC microgrid, occurs. It characterizes with dual independent energy infrastructures, multiple storage components and redundant power electronics conversion topology to realize extremely high reliable and resilient power. In addition Super UPS is friendly to environment since it is convenient to interface with renewable energy such as photovoltaic and Fuel Cell power. Firstly architecture of the Super UPS is investigated and a generic method to synthesize architecture is provided. A metrics with regarding to the reliability, conversion efficiency and cost is proposed. According to the proposed metrics, optimal architectures for Super UPS are investigated. Afterwards the design of Super UPS system is discussed. Power distribution and management are explored, which is based on the characteristics of multiple energy sources and storage components to maximize the reliability of the power to the load. Since Super UPS is time-variant microgrid, methodology to analysis its stability is important to successful design. Super UPS is required to be resilient to either inside or outside faults. Protection and fault redundancy is necessary for Super UPS system. Finally, a Super UPS pilot project is introduced.

Prof. Mark Dehong Xu (F’13) received the B.S., M.S., and Ph.D. degrees from Zhejiang University in China, Since 1989. He became a faculty member in the power electronics research institute of Zhejiang University. He used to be visiting scholar in University of Tokyo in Japan, CPES of Virginia Tech in United State, and ETH in Switzerland. Since 1996, He becomes a full professor in College of Electrical Engineering of Zhejiang University, China.

The focus of his current research is on power conversion and control with both higher efficiency and high power quality for UPS and renewable energies, on soft switching power conversion for data centers, grid inverters and high speed drives. Further research areas are realizing passive integration with Flexible Multi-layer Foils to improve power density of the power converter, Fuel Cell power system and hybrid energy storage system by utilizing multiple complementary energy storage components.

Dr. Xu is a Fellow of the IEEE and received three Best Paper Awards of IEEE Conferences. He was at-large Adcom member of IEEE Power Electronics Society from 2006-2008. He serves as an associate editor of both IEEE transaction on power electronics and IEEE transaction on Sustainable Energy. He was General Chair of IEEE ISIE2012 at Hangzhou, IEEE PEDG2013 at Arkansas, and IEEE PEAC2014 at Shanghai. He serve as IEEE PELS Distinguished Lecturer in 2015. He is President of China Power Supply Society since 2013.