Abstract
Aiming at the problems of weak coupling performance and poor misalignment-tolerant ability of the magnetic coupling structure of electric vehicle wireless charging system, this paper proposes a coil structure parameter design method. This paper analyzes the relationship between the system characteristics and the coupling coefficient of the wireless charging system based on the dual LCC resonant compensation network. Then, based on the analysis of the structure parameters of DD coils, a structure parameter design method to optimize coupling performance and misalignment-tolerant ability is proposed. Finally, the ANSYS MAXWELL 3-D finite element model of the DD magnetic coupling structure is built, and the validity and feasibility of the proposed design method are verified by simulation. Under the design method of coil structure parameter in this paper, the magnetic coupling structure can achieve excellent coupling performance and misalignment-tolerant ability.
Highlights
In recent years, with the increasingly serious global problems such as environmental pollution and energy crisis, people pay more and more attention to the development of renewable energy and new energy vehicle industry
On the basis of the above analysis, with the goal of optimizing and improving the coupling performance and misalignment-tolerant ability of the DD magnetic coupler, this paper proposes the coil structure parameter design method shown in the following flow chart: Start
The 3-D finite element method simulation results verify that the magnetic coupling structure achieves the strongest coupling performance and misalignmenttolerant ability under this structure parameter, which helps to further improve the transmission power and efficiency of the wireless charging system
Summary
With the increasingly serious global problems such as environmental pollution and energy crisis, people pay more and more attention to the development of renewable energy and new energy vehicle industry. Electric vehicle wireless charging systems require high-efficiency and high-power output capabilities. These are the core factors restricting the development of current wireless charging technologies. In order to improve the output power and system efficiency of electric vehicle wireless charging systems, it is essential to improve the coupling performance of the magnetic coupler. In the current reference on the design of coil structure parameters for magnetic coupling structure, the University of Auckland proposes DD and DDQ coils on the basis of the circular coils. Their coupling performances and misalignment-tolerant abilities are significantly improved [4], literature [5] proposes a BP type coil, compared with DDQ coils, its wire consumption is reduced by about 20%. On the basis of the proposed design method, the structure parameters of DD coils are obtained when the magnetic coupling structure has good coupling performance and misalignmenttolerant ability
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
