基于GaN器件的高电压线路多米诺无线供电系统设计

Design of GaN-Based Domino Wireless Power Supply System for High-Voltage Lines

为系统解决高电压复杂电磁场环境塔基设备供电问题,提出一种基于GaN(氮化镓,第三代半导体材料)器件的多米诺中继型无线供电系统及配置方法。首先基于电路互感耦合模型和有限元仿真对多米诺无线供电系统的频率特性和功效特性进行了分析,发现通过调节负载阻抗匹配和适当提高驱动频率,能够有效改善系统的传输功效特性和抗频率失调特性,并结合电场分布云图对系统的电磁兼容性进行验证。在此基础上搭建基于GaN器件的多米诺无线供电系统实验样机,测试结果表明该系统能够实现高电压等级远距离、高效率的无线供电,且具有较好的抗频率失调特性,为无线电能传输技术在高电压设备供电领域的应用提供了参考依据。

In order to solve the problem of power supply for tower monitoring equipment in high-voltage complex electromagnetic field environment,this paper proposes a GaN-based domino relay-type wireless power supply system and configuration method.Firstly,based on the circuit mutual inductance coupling model and finite element simulation,the frequency characteristics and power characteristics of the domino wireless power supply system are analyzed.It is found that by adjusting the load impedance matching and appropriately increasing the driving frequency,the transmission efficiency characteristics and frequency offset characteristics of the system can be effectively improved.And combined with the electric field distribution cloud map,the electromagnetic compatibility of the system is verified.Based on this,a prototype of the GaN-based domino wireless power supply system is built.The test results show that the system can realize high-voltage level,long-distance,high-efficiency wireless power supply,and has good anti-frequency offset characteristics,which provides a reference for the application of wireless energy transmission technology in the field of high voltage equipment power supply.