A Dual Constant Current Output Ports WPT System Based on Integrated Coil Decoupling: Analysis, Design, and Verification

• DOI: 10.3390/electronics13173371
• Publication Date: 2024-08-26T07:14:31Z
• Authors: Le Yu; Shujia Xu; Jiabin Wang; Lin Yang; Xuebin Zhou
• Keywords: Decoupling (probability); Wireless Power Transfer; Solenoid

With the high integration of power electronic devices, wireless transfer (WPT) systems are required to have output characteristics different specifications that independent load. However, existing methods for realizing dual-output WPT problems such as complex circuits, cumbersome control schemes, low system stability, insufficient space utilization, and unnecessary cross-coupling. Therefore, in order solve above problems, this paper proposes a dual-receiver with dual constant current (CC) based on an integrated decoupling coil. In system, DD coil is wound vertically series solenoid serves first receiving achieve energy transmission system. While used transmitting second coil, coils perpendicular each other natural decoupling. Furthermore, together side ferrite plate. there no cross-coupling interference which simplifies design. Firstly, magnetic coupler optimization method analyzed detail theoretically. Secondly, detailed mathematical analysis performed CC load-independent zero phase angle operation. Again, voltage switching inverter can be achieved by changing compensation component parameters through simulation verification. Finally, prototype rated 283 W constructed validation purposes. The receiver delivers 3 A, while provides 4 DC–DC conversion efficiency reaching peak 90.2%. experimental results confirm accuracy theoretical analysis.