| With the advent of industrial informatization,the demand for electricity has gradually increased,and traditional industries have increasingly strengthened the requirements for electricity safety and convenience.At present,the fixed-point wireless power transmission technology for fixed loads has become mature,and the research on dynamic wireless power transmission technology has also become the research focus of domestic and foreign scholars.This article focuses on the radial load movement research of dynamic wireless power transmission.This topic is derived from the UESTC-SMC international cooperation research project.It is optimized for the reduction of transmission efficiency of the receiving electric load during the movement,and aims to propose a set of schemes for improving the transmission characteristics of the radially moving load during the movement.(1)The analysis theory takes the equivalent circuit theory as the cornerstone,constructs the transmission efficiency model of the commonly used four-coil transmitting and receiving coil system,and analyzes the frequency of the overall system at resonance,including the inherent parameters of the transmitting and receiving coils,as well as in the radial direction.In the process of movement,the impact of the offset distance on the system.(2)The HFSS software is selected for simulation design,and the coil structure model required by the MCR-WPT system is constructed.Through the design and comparison of parameters,the resonant coil suitable for the experimental platform is designed,and the load is analyzed for the occasion of radial movement.The influence on the transmission efficiency of the coupling system during the radial movement,and the influence of the coil design parameters on the overall efficiency of the system,thus proposes a scheme for optimizing the coil design process.(3)Propose a scheme to enhance the coupling field strength of the transmitter and receiver.Considering factors such as the improvement of the coupling coefficient and the installation size of the actual power supply object,a simulation model for optimizing the transmitter structure is established,and the coil array is switched for transmission The coupling compensation of the terminal enhances the coupling strength of the coupling module of the MCR-WPT system,thereby improving the transmission efficiency of the system and analyzing and comparing the original four-coil structure and the coupling effect of the multi-transmitting switching terminal.(4)Based on the research results of tuning strategies,a dynamic tuning strategy for axial moving loads suitable for this system is designed,including the design of hardware circuits and software.In the hardware design,a suitable chip is selected according to the requirements of this article.In the software design,a frequency conversion algorithm directly related to the axial movement distance and the resonance frequency is proposed.(4)Based on the optimization strategy of coil design parameters,design an optimized coil design strategy suitable for this system for radially moving loads,and simulate and analyze the emission effect of the array multi-transmitting feeder coil group,and make a small array coil group for the radial direction.The moving coil performs array compensation during the movement.(5)Build a reconfigurable transmitting coil set compensation coupling strength wireless power transmission technology experimental platform for radially moving loads,and perform corresponding tests on the coil set and hardware modules.Compare and analyze the system when the reconfigurable transmitting end is not used and when the reconfigurable transmitting end is used.The transmission efficiency effect of the system at the transmitting end can be reconstructed. |
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