恒压输出的无线电能传输系统设计  

Design of a Wireless Energy Transfer System with Constant Ouput

作　　者：林宁[1] 姚缨英[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电力电子技术》2011年第2期66-68,共3页Power Electronics

摘　　要：无线电能传输系统的可分离变压器距离较大,能量传输效率低,且输出电压受接收距离的影响较大。根据系统的互感模型,分析了变压器初级线圈匝数对传输效率的影响。选择合适的补偿方式,设计了一种两级式结构,初级半桥逆变频率跟踪,次级恒压控制,有效保证了传输距离变化时次级能量的接收,并且具有控制简单,能量传输稳定等优点。实验结果验证了该设计方法的有效性。A wireless energy transfer system＇s separable transformer usually has a large air gap, which causes the energy transfer has low efficiency, and greatly impacts the output voltage.Based on the system＇s mutual inductance model,the impact of primary coil＇s turns on transfer efficiency is analysed.Selecting an appropriate compensation method, a two-stage topology is designed, the first stage is an inverter with frequency tracking, the secondary stage is constant voltage control,it ensures energy receiving even the air gap is changing,and its advantages are easy to control, stable energy transmission.The experimental results verify the effectiveness of the proposed design method.

关 键 词：可分离变压器 频率跟踪 互感模型 无线电能传输 

分 类 号：TM41[电气工程—电器]