磁耦合共振双发单收系统特性仿真分析

Simulation Analysis for Characteristics of Double-Emission and Single Receiving Based on Magnetically-Coupled Resonant

针对电动汽车行驶过程中出现的多个能量发射端向一个能量接收端非接触供能的情形,基于磁耦合共振无线电能传输原理,建立"双发单收"式磁耦合共振理论模型,求解得到"双发单收"系统负载总功率数学表达式。选取3个典型位置,利用ANSYS仿真软件得到发射、接收线圈的磁感应强度云图和电流波形图,分析比较3个位置的电流传输特性与磁场特性。逐渐改变接收线圈与发射线圈的横向相对位置,模拟得到一个能量接收系统在两个能量发射系统之间运动时的充电过程,发现接收线圈运动时系统具有较为稳定的充电电流与充电功率,验证了"双发单收"系统的正确性。

In order to study the situation that the multiple energy senders supplying energy for a single load non-contact in the course of electric vehicle driving, the circuit model of wireless power transfer （WPT） system is established based on the theory of magnetically-coupled resonant wireless power transfer （ MCR-WPT）, and the magnetically-coupled resonant （MCR） theory model of ＂double-emission and single receiving＂ is estab- lished, the total power load mathematical expression of ＂double-emission and single receiving＂ system is ob- tained. Three typical positions are selected, the magnetic induction intensity cloud and the current waveform of the transmitting and receiving coils are obtained by ANSYS simulation software. The current transmission char- acteristics and magnetic field characteristics of the three positions are analyzed and compared. The horizontal position corresponding to the transmitting coil and receiving coil is gradually changed, a charging process that an energy receiving system moves between two energy emission systems is obtaind by simulation, which found that the system has a relatively stable charging current and charging power when the receiving coil is moving, the correctness of the ＂double-emission and single receiving＂ system is verified.