基于GaN的恒流型无线电能传输电路设计  

Design of GaN-device-based Constant-current Circuit for Wireless Power Transmission

作　　者：韩立业 毛丽娜 方正鹏 HAN Liye;MAO Lina;FANG Zhengpeng(Xuchang Electrical Vocational College,Xuchang 461000,China;Henan Xuji Power Electronics Co.,Ltd.,Xuchang 461000,China)

机构地区：[1]许昌电气职业学院,河南许昌461000 [2]河南许继电力电子有限公司,河南许昌461000

出　　处：《电工技术》2024年第1期37-40,共4页Electric Engineering

摘　　要：为提升无线电能传输(WPT)系统的效率,利用氮化镓(GaN)器件比传统硅(Si)器件开关损耗低的优势,提出了基于GaN器件的LCL-LCC型感应耦合式电能传输(ICPT)系统与负载无关的恒流输出电路设计方法。首先对LCL-LCC补偿电路建立互感模型,推导出系统零相位角(ZPA)运行和与负载无关的恒流输出条件,提出了优化初级补偿电感的参数配置方法及设计流程。通过微调副边补偿电容值,逆变桥能实现零电压开关(ZVS)。最后,搭建实验平台验证理论电路设计的可行性。实验结果表明,对于不同负载,基于GaN器件的系统效率明显高于Si器件。In order to improve the efficiency of wireless power transmission(WPT)system,by utilizing the advantage of low switching loss of GaN devices compared with traditional silicon(Si)devices,the present work proposed a design method of load-independent constant-current output circuit of LCL-LCC inductive coupled power transmission(ICPT)system based on GaN devices.It first established the mutual inductance model of LCL-LCC compensation circuit,derived prerequisitesfor system zero phase angle(ZPA)operation and load-independent constant-current output,and put forward the parameter configuration method and design flow for optimizing the primary compensation inductance.The inverter bridge can realize zero voltage switching(ZVS)by slightly adjusting the secondary compensation capacitance.Finally an experimental platform was built to verify the feasibility of the theoretical circuit design,showing that the system efficiency based on GaN platform is significantly higher than that based on Si platform for different loads.

关 键 词：氮化镓器件 ICPT 恒流输出电路 零电压开关 

分 类 号：TN791[电子电信—电路与系统]