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Prof. Xiaoqiong He Professor Southwest Jiaotong University |
Biography
Xiaoqiong He, Dr., Professor, Deputy Director of the National Rail Transit Electrification and Automation Engineering Technology Research Center (NEEC)，Southwest Jiaotong University (SWJTU). She is a members-at-large of the IEEE Power Electronics Society AdCom and has served as General Chair of IPEMC/ECCE Asia 2024, ICIEA 2023 and General Secretary of WIP of the IEEE Power and Energy Society in China (2022–2024). She has long been engaged in application-oriented fundamental research and engineering demonstration in advanced fully-through railway traction power supply system for rail transit and onboard power electronic transformers. She has hosted 4 projects of the NSFC in China, including a Key Project and General Programs. She has published more than 140 SCI/EI-indexed papers, holds over 70 granted Chinese invention patents, has received 3 First Prize Awards in Science and Technology from the China Railway Society, and 1 First Prize Award in Technology Invention of Sichuan Province in China.
Title
Advanced Fully-through Railway Traction Power Supply System and Control
Abstract
At present, the traction power supply systems of electrified railway in many countries around the world adopts a phased and segmented power supply method. This power supply method sets a neutral section（dead zone） every 20 kilometers or so. The neutral section not only restricts the power supply capacity, but also hinders a green and low-carbon development of the system, as well as potential improvement of train speed and carrying capacity, as well as brings many safety hazards. A new and advanced fully-through traction power supply system with high-power AC-DC-AC converters in traction power supply substations can eliminate the neutral sections on the entire railway line, using grid-connected control of high-power converters between inverters in traction power supply substations. Thereby it is possible to achieve interconnectivity of the electrical energy across the entire railway line, greatly improving power supply capacity, facilitating efficient utilization of regenerative braking energy, facilitating a large-scale integration of new energy, significantly reducing the number of related power supply equipment on the entire railway line, and minimizing potential fault points along the entire line.