Zhiwei Han, Doctor of Engineering. He is an associate professor at the China National Engineering Research Center for Railway Electrification and Automation, School of Electrical Engineering, Southwest Jiaotong University, and a visiting scholar at Delft University of Technology. The main research areas are railway traction power supply system and maintenance technology. He has presided over/principally researched more than 25 research projects. He has published more than 80 SCI/EI papers and more than 40 invention patents.