Optimization design of coupling mechanism for dynamic static hybrid AGV WPT systems

The wireless charging of Automated Guided Vehicle (AGV) provides an effective solution to solve the problems such as the discontinuity of work caused by the existing wired charging method and the hidden danger in the process of plugging and removing. In view of the current working situations of AGV in orbit circulation and port stopping for a long time, as well as the existing problems of AGV wireless charging, such as insufficient endurance, large capacity of vehicle battery and long charging time, a new coupling mechanism for hybrid AGV wireless charging system is proposed in this paper. By setting the two ports of the guide rail as static wireless charging stations, and optimizing the magnetic circuit mechanism of the two ports, the goal of fast charging at both ends of the guide rail is achieved. Firstly, the guide rail is designed as coplanar inside and outside layers. Then, the inner circle number is increased and the distance between the internal and external layer of guide rail is adjusted. Finally, the mutual inductance minimum standard deviation of a set of optimized schemes is chosen. The validity of this project is verified by simulation and the experimental results show that AGV fast charging current changes from the original 2.16 A to 2.98 A, increased by nearly 38%. The proposed scheme effectively saves charging time and improves work efficiency.