Department of Electrical and Computer Engineering
Graduate Research Seminar Series
The Department of Electrical and Computer Engineering announces the following Graduate Student
seminar:
Monday, October 3, 2016
11:00am – 12:00pm
LSN-134
Impedance Matching Range Extension Method for Maximum Power
Transfer Tracking in IPT System
Speaker: Dr. Dai Xin, School of Automation, Chongqing University, China
Abstract: Maximum Power Transfer is always an important issue for Inductive Power Transfer (IPT)
system to make system power transfer capability is fully developed and utilized, and it’s u sually realized by
impedance matching method. Traditionally, impedance matching is implemented by placing a power
electronics converter such as Buck converter at the secondary side. However, the impedance matching range
of the power converter has not been discussed before. The power electronics converter and its operation
mode will directly influence its impedance matching range. Traditional Buck converter running at CCM
mode has a limited impedance matching range. To extend the load matching rang, this paper proposes a
novel impedance matching method based on switching between CCM and DCM mode. The impedance
conversion range is analyzed for CCM and DCM running mode respectively. The influence of mutual
coefficient k is discussed as well. On the basis, a maximum power tracking method is proposed.
Experimental results show that the impedance matching range can be extended at least two times than
traditional matching method.
Bio of speaker: Dr. Dai Xin is a Professor of School of Automation of Chongqing University, China. He is a vice
president of China National International Cooperation Center on Wireless Power Transfer Technology and a director
of China-New Zealand International Cooperation Center. He is also the co-director of Chongqing wireless power
engineering enter and co-executive of Special Committee on Wireless Power Transfer technology of China Power
Supply Society. He received the B.S. degree from Yuzhou University, Chongqing, China in Automation and Ph.D.
degree from Chongqing University, Chongqing, China in Control Science and Engineering.
His research interests include Wireless Power Transfer technology and advanced control of Power Electronics
system. He has published more than 60 papers on International Journal and conference and owns more than 40
authorized invention patents of China. In 2010, 2013 and 2016, he got three government prizes on science and
technology for the achievements on Wireless Power Transfer technology. He got research grant of 1000k RMB
from National Natural Science Foundation of China and owns research grant of 1000k RMB from Chongqing
government for international cooperation. In addition, he owns more than 800k RMB research funds from
cooperation enterprise and company. Dai Xin is also a program Chair of 2017 IEEE workshop on Wireless Power
(2017 WoW).
All faculty and graduate students are welcome to attend. All graduate students must attend at least three
Graduate Research seminars before registering for EE 799A or before signing up for the first attempt of the
Comprehensive Exam. An attendance sheet will be circulated at the seminar.