A Multi-Output Wireless Power Transfer System Based on Non-Overlapping Self-Decoupling Magnetic Couplers

In industrial applications, multiple devices operate concurrently and require simultaneous power supply. Due to reliability requirements, isolated voltage sources with multiple independent outputs are preferred. This article proposed a non-overlapping self-decoupling structure for wireless power transfer (WPT). The coil is divided into two parts that are positively and negatively coupled to other coils. The inductor-capacitor-capacitor series (LCC-S) topology is used to realize constant voltage (CV) outputs. A flowchart of the coupler design is given and an experimental prototype is constructed to verify the feasibility of the proposed system. The system can achieve CV outputs of 112, 93, and 83 V, respectively, with a maximum variation rate of 1.05%.