Abstract
Multireceiver wireless power transfer (multi-Rx WPT) technology is a promising method for charging multiple electronic devices simultaneously. However, the cross-coupling effect between Rxs not only leads to the correlation of output characteristics of each load, but also reduces the power transfer capability and efficiency of WPT systems. This article proposes a method to achieve constant current (CC) output with cross-coupling compensation in multi-Rx WPT systems, thus avoiding tedious parameter measurement and communication between Rxs. The cross-coupling can be compensated adaptively, and the output can be controlled independently and not affected by the fluctuation of system parameters. A closed-loop control strategy based on the phase shift control method of an active rectifier is carried out, which can continuously regulate the load current while maintaining cross-coupling compensation. An optimized phase synchronization auxiliary circuit for multi-Rx WPT systems is presented, which shares the power transfer coils and is not affected by the cross-coupling effect. A 70-W two-load experimental prototype is built to verify the theoretical analysis, and the maximum efficiency reaches 88.1%.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Transactions on Transportation Electrification
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
