具有抗偏移特性的IPT与CPT结合的WPT系统

A WPT System Combining IPT and CPT With Anti-misalignment Performance

目前无线电能传输(WPT)技术正在迅速发展,并广泛运用于各种电子设备。由于耦合结构的偏移会导致系统输出发生较大的变化,为扩宽WPT技术的应用范围,高抗偏移性是WPT技术不可缺少的特性。为完善WPT技术的抗偏移特性,这里提出了一种基于感应式能量传输(IPT)技术与电容式能量传输(CPT)技术的串联系统,通过优化系统结构,利用IPT技术和CPT技术在耦合结构偏移时输出功率不同的变化趋势,将两者互补使得系统实现高抗偏移特性。最后,设计并实现了输出功率600 W,系统整体效率为89.2%的WPT系统,验证了该设计策略的可行性。

Wireless power transfer(WPT)is developing rapidly and widely used in various electronic devices.The misalignment between the transmitter and receiver will lead to a great change in the system output power.To widen the application scope of WPT technology,high anti-misalignment is an indispensable feature of the WPT system.To improve the anti-misalignment performance of WPT system,a hybrid system based on inductive power transfer(IPT)and capacitive power transfer(CPT)is proposed.By optimizing the system coupler,the output power of IPT and CPT is different when the system is misalignment and the two parts are complementary to each other to achieve a high antimisalignment performance.Finally,a hybrid system is designed and implemented,the experimental system can achieve600 W output power with overall efficiency of 89.2%which verifies the feasibility of the design strategy.