Haimeng Wu, Bowen Gu, Xiang Wang
Wireless power transfer (WPT) technology is able to provide a reliable, flexible and cost-efficient power delivery solution in many environments which are hindered by the wires connection, showing huge potential in various fields such as home appliances: the incompatibility of charging interfaces of electronic products has been greatly improved; the medical applications: it is not necessary to replace the battery of pacemaker; electric vehicles which are most concerned field of WPT: help significantly to reduce the charging infrastructure, also to improve the charging secure and convenient.
The power electronics technology plays a significant role in the development of the WPT system, which is the fundamental technique in a wireless charging system. However, most of the existing developed wireless battery chargers are unidirectional because of the diodes bridges used on the receiver side to rectify the AC power signal from the transmitter. In this project, we aim to design a bidirectional wireless charging system using the TAPAS boards. The TAPAS board is designed as a software-defined inverter for the educational purpose by SEIMENS. There are several unique features integrated in TAPAS such as the high switching frequency by using 3-phase GAN devices; the flexible communication with the external device and multifunctional implementation via changing the software. With these advantages of the TAPAS boards, a bidirectional wireless battery charging system can be developed in a battery-to-battery energy storage system.
In the project report, the principle of the proposed circuit has been studied and verified in the simulation tools Matlab/Simulink and the electromagnetic coupling coefficient between the resonant coils has been analyzed in ANSYS for further investigation. A prototype of the proposed wireless charging system has been designed and tested and the experimental results successfully validate the theoretical analysis and demonstrate the charging performance of the developed system. Based on the project investigation, the GaN technology may bring in the potentials to develop the advanced compact wireless charging system.
The main research work of the project has been conducted in the following areas:
For the further information, please find the report and presentation slides attached for the project.
Here is the link of a brief introduction video:
Please contact me if you have any questions about our project. Here is my email address:
This idea submission is among the finalists and will be presented at the CKI Conference in Erlangen.