Optimization of Wireless Charging Efficiency of Electric Vehicles based on Magnetic Coupling
With the development of wireless charging technology,wireless charging of electric vehicles has become a hot spot,and magnetic coupling resonant infinite power transmission technology has obvious advantages in the field of electric vehicle charging.In this paper,the basic topology circuit is optimized based on the principle of magnetically coupled resonant wireless power transfer.In this paper,four basic compensation circuits are analyzed,and it is concluded that the SS compensation network is more suitable for wireless charging of electric vehicles.Secondly,the coil coupling coefficient is optimized,and the coil size is adjusted,that is,the area of the receiving coil is larger than the area of the transmitting coil,and the coil is held and the relative position is corrected to improve the charging efficiency.In terms of circuit parameters,through the analysis of the formula,the parameter variables are selected,and the simulation is carried out within a reasonable numerical range,and the positive correlation between the resistance and the charging efficiency is obtained,and the relationship curve between the coupling coefficient and the charging efficiency is obtained,and the coupling coefficient is the highest in 0.1-0.3 charging efficiency through the curve.
NETL
NSTL
万方数据
