Associate Professor Email: lzhao@stu.edu.cn Office: Room 409, Science and Technology Building Lei Zhao, PhD, Master’s Supervisor. He received his PhD degree in Engineering from Harbin Institute of Technology in January 2018. He has participated in various projects including the National Natural Science Foundation of China, Delta Fund Project, and projects supported by China Electric Power Research Institute, and has published more than 20 SCI/EI-indexed papers. Main Research Interests Power electronic devices feature high efficiency, high power density, and high reliability, and are widely applied in new energy power generation, electric vehicles, rail transit, aerospace, industrial production, medical equipment and other fields, with broad application prospects. His research mainly focuses on topologies and control strategies of high-performance power electronic converters. He has completed the research and development of multiple power electronic devices and achieved certain research outcomes. At present, his research is concentrated in the following three directions: Research on high-efficiency circuit topologies Investigation of novel high-efficiency circuit topologies with soft-switching characteristics to improve power utilization efficiency and expand the application scope of power electronics technology. Optimal design methods for converters under extreme environments Study on optimal design approaches for converters under extreme operating conditions such as wide temperature ranges and wide input/output voltage ranges to enhance the operational reliability of equipment. Data-driven extraction methods for key parameters of converters Based on historical operating data of converter devices, state-of-the-art theories such as machine learning and artificial intelligence are introduced to extract key parameters, providing a basis for lifetime prediction, reliability assessment, and optimal operation of converters.
Representative Publications： [1]Lei Zhao, Haoyu Li, Chuanyu Xu, Xuemei Zheng. Efficiency Improvement of an Adaptive Energy Storage Full-Bridge Converter by Modifying Turns Ratio of Coupled Inductor[J]. IEEE Transactions on Power Electronics, 2018, 32(2), 948-956. (SCI, IF=7.15). [2] Lei Zhao, Haoyu Li, Xiao Wu, Jin Zhang. An Improved Phase-Shifted Full-Bridge Converter with Wide-Range ZVS and Reduced Filter Requirement[J]. IEEE Transactions on Industrial Electronics.( SCI, IF=7.168). [3] Haoyu Li, Lei Zhao. Chuanyu Xu, Xuemei Zheng. A Dual Half-bridge Phase-shifted Converter with Wide ZVZCS Switching Range[J]. IEEE Transactions on Power Electronics.( SCI, IF=7.15). [4] Lei Zhao, Haoyu Li, Yue Hou, Yanxue Yu. Operation Analysis of a Phase Shifted Full-Bridge Converter during the Dead-Time Interval[J]. IET Power Electronics, 2016, 9(9), 1777-1783.(SCI, IF=3.547). [5] Lei Zhao, Haoyu Li, Yanxue Yu, Yantian Wang. A Novel Choice Procedure of Magnetic Component Values for Phase Shifted Full Bridge Converters with a Variable Dead-Time Control Method[J]. Energies, 2015, 8, 9655-9669.(SCI, IF=2.262). [6] Lei Zhao, Haoyu Li, Yuan Liu, Zhenwei Li. High Efficiency Variable Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model[J]. Energies, 2015, 8, 2647-2673.(SCI, IF=2.262). [7] Lei Zhao, Haoyu Li, Shufeng Liu, Weihe Zeng. Dual Mode Modulation Method for the Full-Bridge Converter Operating in a Wide Input Voltage Range[J]. Electronics Letters, 2016, 52(6), 470-471.(SCI , IF=1.155). [8] Lei Zhao, Chuanxu Xu, Xuemei Zheng, Haoyu Li. A Dual Half-Bridge Converter with Adaptive Energy Storage to Achieve ZVS over Full Range of Operation Conditions[J]. Energies, 2017, 10, 444.(SCI, IF=2.262). [9] Lei Zhao, Haoyu Li, Chao Wang, Yuan Liu. A Method of Optimizing the Switching Frequency Based on the Loss Analysis Model[C]. IEEE Industrial Electronics Society (IECON), Dallas, 2014:4103-4109(EI收录). [10] Lei Zhao, Haoyu Li, Yanxue Yu, Yutian Wang. Optimum Dead-Time Control method of Phase-Shifted Full-Bridge Converter to Extend the ZVS Range[C]. IEEE International Telecommunications Energy Conference (INTELEC), Osaka, 2015:1-4(EI收录). [11] Lei Zhao, Haoyu Li, Yanxue Yu, Yutian Wang. A Simple Control Method of Phase-Shift Full Bridge Converter to Reduce the Power Loss Under Light Load and Standby Conditions[C]. IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, 2015:1485-1488(EI收录). [12] Lei Zhao, Haoyu Li, Yanxue Yu, Yutian Wang. A Novel Method of Phase-Shifted Full-Bridge Converter to Improve Efficiency under Light Load Condition[C]. IEEE International Conference on Power Electronics-ECCE Asia (ECCE Asia), Seoul,:2644-2649(EI收录).
Research on Combined Full-Bridge Topology Based on Transformer Coupling and Its Soft-Switching Technology |
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