An Unsymmetrical Driving Scheme for Inductive Power Transfer Systems Using Decoupled Transmitter Coils

Release Time：2021-12-27Number of visits：195

Speaker:    Mr. Kai Zhao

Time:         14:00-17:00 , Dec.27
Location:   SIST 1C 101
Host:          Prof. Minfan Fu
Abstract:
This work explores a novel and unsymmetrical driving scheme for an inductive power transfer system using decoupled transmitter (TX) coils. Instead of driving each TX in the same way, the proposed driving scheme would employ various compensations for different coils. When one TX coil is series compensated, the other TX coil is compensated by the LCC network, and these two compensated coils are driven by a cascaded inverter instead of two bridge ones. Through circuit analysis, the power flow of each TX are closely coupled and help avoid over load conditions. Meanwhile, it would maintain the benefits of a multiple-TX system like high misalignment tolerance, and enable the system design and control like a single-TX one, e.g., having load-independent output voltage and optimal loads. The experiment demonstrates the waveform of normal mode and protection mode, load-independent output voltage, power distribution conditions, and the optimum efficiency.

Bio:
Kai Zhao received the B.S. degree in electrical engineering and automation from Xi’an University of Technology, Xi’an, China, in 2019. He is currently working toward the M.S. degree with the School of Information Science and Technology, ShanghaiTech University, Shanghai, China. His research interests include inductive power transfer system.