Construction and Optimization of Power Transfer Route in Array Wireless Power Transfer Network With Multiple Load Nodes

Wireless power transfer network (WPTN) is composed of nodes and power transfer routes, which can supply power for group devices. In the application of WPTN, the number and position of load nodes are usually random. The random variation and the adjustment of output characteristics of some load nodes will affect the electrical performance of the other nodes due to the complex cross-coupling. This article constructs an array WPTN that can maintain the independence of the node output current with the load change by designing a special topology structure. Combined with the topology structure switching strategy of nodes, the power transfer direction can be flexibly adjusted according to the position of load nodes. On this basis, the power transfer routes are optimized for the goal of maximum efficiency. And the breadth-first search algorithm is adopted to optimize the power transfer routes based on its fast search speed. Finally, the experimental results verify the effectiveness of the proposed method.