This book focus on the high frequency power conversion especially on high-frequency isolated DC-DC and single-stage AC-DC converters. Base on dual active bridge DC-DC conveters, two swiches are replaced by two diodes and this makes the DAB suit for unidirectional power flow applications. The shoot through issue can be avoided, the design can be simplified and the cost can be reduced. Compared with widely used high frequency isolated DC-DC converters operating under unidirectional power flow applications, semi DAB based DC-DC converters can achieve full load operating range ZVS for all switches with relying on auxiliary circuits and ZCS off for diodes. Besides, conversion efficiency can improved and optimized with different working conditions. The Semi DAB can be used for AC-DC power conversion. Although without mandatory inner current tracking loops, natural PFC can be obtained. With the proposed control strategies, ZVS for switches even for no load working condition in facing the variation of instantaneous AC grid voltage can be guaranteed. It presents new high frequency isolated unidirectional DC-DC and single-stage AC-DC topologies, advanced modulation and multimode power control methods to improve the performance of converters.

The book provides valuable insights, advanced methods and practical design guides on the DC-DC and AC-DC conversion that can be considered in applications such as EV chargers, energy storage, emicrogrid and solid state transformers, it is a valuable resource for researchers, scientists and engineers in the field of high frequency isolated DC-DC and AC-DC converters.

Autorentext

Deshang Sha, IEEE senior member, received his B.S. from Luoyang Institute of Technology, Luoyang, China, in 1998, his M.S. from Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, China in 2001, and his Ph.D. from Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, China, in 2005, all in Electrical Engineering. Since 2008, he has been with the School of Automation, Beijing Institute of Technology (BIT), Beijing, China, where he is currently a tenured Full Professor. From 2012 to 2013, he was a Visiting Scholar with the Future Energy Electronics Center (FEEC), Virginia Polytechnic Institute and State University, Blacksburg, Virginia. He has authored over 100 papers and four books. His current research interests include the modeling and control of power converters, high-efficiency power conversion and power electronics applications in renewable energy power generation.

Peisong Ma, received his M.S. degree in electrical engineering from Guangxi university, Nanning, China, in 2017, and his Ph.D. degree in control science and engineering from Beijing Institute of Technology(BIT), Beijing, China in 2024. He is currently a Lecturer at the School of Information and Electrical Engineering, Hebei University of Engineering. His research interests include DC/DC power conversion and AC/DC converters.

Jiankun Zhang, received the B.S. and the M.S. degrees in electrical engineering, and the Ph.D degree in electrical engineering from Beijing Institute of Technology, Beijing, China, in 2014, 2017, and 2022, respectively. He is currently a Postdoctor in Tsinghua University, Beijing, China. His research interest includes DC/DC converters and DC/AC inverters.