Conducted Electromagnetic Interference in Power Converters: Modeling, Prediction and Reduction

Xinbo Ruan received the B.S. and Ph.D. degrees in electrical engineering from Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, China, in 1991 and 1996, respectively.In 1996, he joined the Faculty of Electrical Engineering Teaching and Research Division, NUAA, where he became a Professor in the College of Automation Engineering in 2002. From August to October 2007, he was a Research Fellow in the Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Hong Kong, China. From March 2008 to August 2011, he was also with the School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, China. He is the author or co-author of 13 books and more than 300 technical papers published in journals and conferences. His main research interests include resonant and soft-switching power converters, power converter topologies and control, grid-connected converters and system for renewable energy,modeling and stability of power converters, and envelop tracking power supply.Prof. Ruan was a recipient of the Sustainable Energy Systems Technical Achievement Award from IEEE Power Electronics Society in 2022, the Delta Scholarship by the Delta Environment and Education Fund in 2003, and the Special Appointed Professor of the Chang Jiang Scholars Program by the Ministry of Education, China, in 2007. From 2005 to 2013, and since 2017 again, he serves as a Vice President of the China Power Supply Society. From 2014 to 2016, he served as a Vice Chair of the Technical Committee on Renewable Energy Systems within the IEEE Industrial Electronics Society. Currently, he serves as an Editor for IEEE Journal of Emerging and Selected Topics on Power Electronics and an Associate Editor for IEEE Transactions on Industrial Electronics, IEEE Transactions on Power Electronics, IEEE Open Journal of Industrial Electronics Society, and IEEE Transactions on Circuits and Systems– II: Express Briefs. He was the General Chair of IPEMC-ECCE Asia 2020 and the General Secretary of IPEMC-ECCE Asia 2009, a Technical Program Committee Chair of the IEEE 7th Annual Energy Conversion Congress and Exposition (ECCE2015), and a Tutorial Committee Chair of the IEEE 12th Annual Energy Conversion Congress and Exposition (ECCE2020). He is an IEEE Fellow.Lihong Xie received the B.S. and Ph.D. degrees in electrical engineering from Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, China, in 2012 and 2018, respectively. From October 2018 to August 2022, he was a research associate at University of Bristol, Bristol, UK. Since October 2022, he joined the college of automation engineering, NUAA, and he is currently a research fellow. His main research interests include modeling and reduction of conducted EMI of power converters, transformer modeling and virtual prototyping of power converters. Qing Ji received the B.S. and Ph.D. degrees in electrical engineering from Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, China, in 2009 and 2014, respectively. Since December 2014, he joined the school of mechanical and electrical engineering, Soochow University, and he is currently an associate professor. His main research interests include power electronics and the reduction of conducted EMI in switched mode power supply.

• Introduction.- The measurement of conducted EMI and the EMI filter design.- Mixed mode noise reduction and the CM, DM noise equivalent circuit for boost PFC converter.- The conducted EMI spectra of average current controlled boost PFC converter and the EMI filter design.- The conducted EMI spectra of CRM boost PFC converter and the EMI filter design.- A generalized lumped capacitance model for the transformer.- The equivalent noise source for analyzing the CM noise in isolated power converters/- Shielding-cancellation technique for reducing the CM noise in isolated power converters.- Hybrid passive cancellation for reducing the CM noise in isolated power converters.- Reducing the CM noise in phase-shift full-bridge converter.- CM voltage cancellation method in power converters.- Reducing the CM current at the input and output sides in DC-AC inverters