Zhang Chunjiang, Professor, Doctoral tutor, working in the College of Electrical Engineering, in Yanshan University now, received his B.S. degree and M.S. degree in 1983 and in 1988 respectively from the Yanshan University, China. He received his Ph. D. in power electronics from the Harbin Institute of Technology, China in 2008. He has presided over three projects sponsored by Chinese national natural science foundation and published 86 papers on power electronics. His current research interests include renewable energy distributed generation and control technology, high frequency link inverter and power factor correction technology.