摘要
为了降低电动汽车无线充电过程中车身周围的磁感应强度,本文提出了一种有源线圈屏蔽的方法。首先,建立了有源磁屏蔽系统和无线充电系统的联合模型,推导了有源磁屏蔽系统的理论方法及设计步骤。然后,通过有限元仿真验证了该有源磁屏蔽方法的有效性,最后,设计了一套3.3 kW无线充电系统的有源磁屏蔽台架,成功实现了电动汽车无线充电系统的有源磁屏蔽,并通过进一步优化有源磁屏蔽线圈中的电流幅值和相位,实现了最佳的有源磁屏蔽效果,证明了该有源磁屏蔽理论及设计方法的有效性。
In order to reduce the magnetic induction intensity around the vehicle body in the process of wireless power transfer of electric vehicles,a method of shielding by active coil is proposed.Firstly,the joint model of active magnetic shielding system and wireless power transfer system is established,and the theoretical method and design steps of active magnetic shielding system are deduced.Then,the effectiveness of the active magnetic shielding method is verified by the finite element simulation.Finally,an active magnetic shielding platform for 3.3kW wireless power transfer system is designed,and the active magnetic shielding of the wireless power transfer system of electric vehicle is successfully realized.By further optimizing the current amplitude and phase in the active magnetic shielding coil,the best active magnetic shielding effect is achieved,which proves the effectiveness of the active magnetic shielding theory and the design method.
作者
蒙金雪
张玉旺
郭彦杰
王丽芳
MENG Jin-xue;ZHANG Yu-wang;GUO Yan-jie;WANG Li-fang(Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190,China;Key Laboratory of Power Electronics and Electric Drive, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《电工电能新技术》
CSCD
北大核心
2021年第4期44-51,共8页
Advanced Technology of Electrical Engineering and Energy
基金
国家国际科技合作专项(2019YFE0100200)
国家自然科学基金项目(51807188)
中科院先导专项(XDA22010403)。
关键词
无线充电系统
有源磁屏蔽
有限元仿真
屏蔽线圈电流
wireless power transfer system
active magnetic shielding
finite element simulation
shielding coil current
