高效率医疗植入式刺激装置无线充电系统

从图4可以分析得出，频率为1.5 MHz时的最大效率为61.13%。频率在1.5 MHz~2 MHz之间，变压器传输效率趋于稳定在60%左右。
针对医疗植入式刺激装置在临床中的供电和供电效率的关键问题，本文以无线能量传输系统中的松耦合变压器作为研究对象。通过对各种磁路结构的对比，选择医疗植入式刺激装置最适合的变压器磁路结构。在实际应用条件下，对松耦合变压器的传输效率进行仿真和实验，仿真实验中，气隙距离为7 mm，频率在100 kHz~2 MHz范围内，初次级均加串联谐振线圈的最大传输效率为61.13%，仿真实验证明可以满足高效率医疗植入式刺激装置的供电需求。
参考文献
[1] PANESCU D.An imaging pill for gastrointestinal endoscopy[J].IEEE Engineering in Medicine and Biology Magazine. 2005，24(4)：12-14.
[2] Ma Jimei，Yang Qingxin，Chen Haiyan.Transcutaneous energy and information transmission system with optimized transformer parameters for the artificial heart[J].IEEE Trans.Applied Superconductivity 2010，20(3)：798-801.
[3] POON A S Y，DRISCOLL SO，MENG T H.Optimal frequency for wireless power transmission into dispersive tissue[J]. IEEE Transactions on Antennas and Propagation，2010，58(5)：1739-1750.
[4] SHIBA K，MORIMASA A，HIRANO H.Design and development of low-loss transformer for powering small implantable medical devices[J].IEEE Transactions on Biomedical Circuits and Systems，2010，4(2)：77-85.
[5] JOAQUIN J.Casanova，et al.A loosely coupled planar wireless power system for multiple receivers[J].IEEE Transactions on Industrial Electronics，2009，56(8)：3060-3068.
[6] YU X J，CHENG J M.Leakage inductance compensation for loosely coupled transformer considering parasitic resistance[J].Electronics Letters，2010，46(10)：717-719.
[7] YOUSSEF M Z，JAIN P K.Series-Parallel resonant converter in self-sustained oscillation mode with the high-frequency transformer-leakage-inductance effect：analysis，modeling，and design[J].IEEE Transactions on Industrial Electronics，2007，54(3)：1329-1340.