谐振式无线供能心脏起搏器多线圈无功屏蔽研究  

Research on Multi Coil Reactive Shielding of Resonant Wireless Energy Supply Cardiac Pacemaker

作　　者：陈伟华[1] 刘宗旺 李政兴 闫孝姮[1] 钱坤 Chen Weihua;Liu Zongwang;Li Zhengxing;Yan Xiaoheng;Qian Kun(Faculty of Electrical and Control Engineering Liaoning Technology University,Huludao,125000,China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125000

出　　处：《电工技术学报》2022年第11期2673-2685,共13页Transactions of China Electrotechnical Society

基　　金：2020年辽宁省教育厅科学研究青年科技人才“育苗”资助项目(LJ2020QNL019)。

摘　　要：为降低心脏起搏器无线供能系统的漏磁场对人体的伤害,该文提出一种150kHz条件下谐振式多线圈无功屏蔽心脏起搏器无线供能系统。建立LCC-C的补偿电路模型,通过研究谐振无功屏蔽线圈原理,仿真研究三种屏蔽线圈环路、匝数的磁场分布和传输效率,以及人体半身模型的电磁-温度场分布,确定了屏蔽线圈的最优环路和匝数。实验结果表明,在3环-5匝最优屏蔽结构下,距中心点35mm处的磁通密度减小了20.22%,传输效率可达76.03%,此时体内温升为1.01℃,符合植入式器件安全规定。所设计的多线圈无功屏蔽结构能有效降低无线电能传输(WPT)系统的漏磁,为植入式器件无线供能系统设计提供了一种新思路。To reduce the harm to human body caused by magnetic field leak of the cardiac pacemaker wireless power supply system,a resonant multi-coil reactive power shielding cardiac pacemaker wireless power supply system under 150kHz is designed.First,the LCC-C compensation circuit model is established.Then the magnetic field distribution and transmission efficiency of three shielding coils with different loops and turns are simulated as well as the electromagnetic-temperature field distribution of a human body half-length model.Afterwards the optimal ring circuit and turns of the shielding coil are obtained via studying the resonant reactive power shielding coil principle and the simulation results.Finally the experimental results show that under the 3-ring-5-turn optimal shielding structure,the magnetic flux density is reduced by 20.22%at 35mm from the center point,and the transmission efficiency reaches 76.03%.The internal temperature rises by 1.01℃,meeting the implantable device safety regulations.The multi-coil reactive shielding structure can effectively reduce electromagnetic leakage of the WPT system,providing new ideas for wireless energy supply system design for implantable devices.

关 键 词：无线电能传输 心脏起搏器 电磁安全 线圈屏蔽 

分 类 号：TM724[电气工程—电力系统及自动化] TM15