Design and control of a bidirectional wireless charging system using GaN devices

Wu, H; Gu, B; Wang, X; Pickert, V; Ji, B

doi:10.1109/APEC.2019.8721909

Design and control of a bidirectional wireless charging system using GaN devices

Lookup NU author(s): Dr Haimeng Wu, Dr Bowen Gu, Dr Xiang Wang, Professor Volker Pickert ORCiD, Dr Bing Ji

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This is the authors' accepted manuscript of a conference proceedings (inc. abstract) that has been published in its final definitive form by IEEE, 2019.

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Abstract

Most of the existing wireless power transfer system works in unidirectional with one-direction control signals. This paper presents a bidirectional wireless charging system with a duplex communication method, which is not only able to achieve the two-way wireless power transmission, but also transfers control signals bi-directionally. The power circuit operation mode is actively controlled by using the wireless transceiver module which can duplex communication to deliver measured signals remotely. The operational principle is analytically studied in details and is verified by simulation. Finally, a prototype of the bidirectional charging system using GaN devices has been successfully designed and tested. In addition, the measured feedback signals are effectively transmitted to validate the control algorithm.