﻿ 感应式无线电能传输系统设计及优化

# 感应式无线电能传输系统设计及优化Design and Optimization of Inductive Wireless Power Transmission System

Abstract: Based on the requirement of wireless power transmission system, Ansoft Maxwell, a finite ele-ment analysis software of electromagnetic field, was used to simulate the magnetic core and coil winding of loosely coupled transformers with different structures. The influence of the relative position changes on the coupling coefficient was discussed. We design a High Power Density Loosely Coupled Transformer. The simulation of the loosely coupled transformer and its resonant compensation network is verified by the method of field-circuit coupled co-simulation based on Simplorer software system. Building 3.3 KW wireless power transmission system experimental platform to verify the feasibility of the design, the overall system transmission efficiency is up to 95%.

1. 引言

2. 松耦合变压器的仿真分析及优化

2.1. 磁芯及线圈结构讨论

(a) 圆形松耦合变压器结构 (b) 方形松耦合变压器结构 (c) DD形松耦合变压器结构

Figure 2. Planar loose coupling transformer structure

2.2. 线圈绕组位置对耦合系数的影响

Figure 2. Influence of vertical distance on coupling coefficient

Figure 3. Influence of horizontal offset on coupling coefficient

Figure 4. Effect of coil inner diameter on coupling coefficient

2.3. 磁芯结构的优化

3. 仿真分析及验证

Figure 6. Core magnetic flux density distribution

Figure 7. Influence of horizontal offset on coupling coefficient

Figure 8. Co-simulation circuit

Table 1. Parameters of simulation circuit

Figure 9. Simulation waveform of Primary Resonant Network

4. 实验验证

5. 结论

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