Professor Zhengqing Han is based at the School of Electrical Engineering, Southwest Jiaotong University (SWJTU). He has been engaged in research on traction power supply automation and smart traction power supply system for many years; he has presided over more than 20 key programs, including youth programs and general programs supported by National Natural Science Foundation of China, national advanced rail transit key programs, key scientific and technological development programs of China State Railway Group Co., Ltd. (China Railway Corporation, Ministry of Railways), and science and technology support programs of Sichuan Province.