The equivalent two-port network model of a middle range wireless power transfer(WPT) system was presented based on strongly coupled multiple resonators. The key parameters of the WPT system include self-inductance, re...The equivalent two-port network model of a middle range wireless power transfer(WPT) system was presented based on strongly coupled multiple resonators. The key parameters of the WPT system include self-inductance, resistance, parasitic capacitance, mutual inductance and S-parameters of coils & resonators were analyzed. The impedance matching method was used to optimize load power and transmission efficiency of the multi-resonator WPT system, and the impedance matching method was realized through adjusting the distances between the coils and resonators. Experiments show that the impedance matching method can effectively improve load power and transmission efficiency for middle range wireless power transfer systems with multiple resonators, at distances up to 3 times the coil radius with efficiency more than 70% and load power also close to 3.5 W.展开更多
随着医疗技术的不断进步,植入式医疗设备IMD(implantable medical devices)在临床上的应用越来越多。由于传统的电池供电方式会给患者带来额外的组织损伤和手术成本,采用无线电能传输WPT(wireless power transfer)技术对IMD供电将成为...随着医疗技术的不断进步,植入式医疗设备IMD(implantable medical devices)在临床上的应用越来越多。由于传统的电池供电方式会给患者带来额外的组织损伤和手术成本,采用无线电能传输WPT(wireless power transfer)技术对IMD供电将成为今后的趋势。然而,如何在有限的空间内设计出高效率的IMD-WPT系统具有较大的挑战性。为此,对比了5种适用于IMD的WPT技术的性能特点;然后以磁谐振式WPT技术为例,具体介绍了磁谐振式IMD-WPT系统设计中的关键问题;最后结合部分磁谐振式WPT技术在一些典型IMD中的应用现状,讨论了IMD-WPT技术未来的研究方向。展开更多
基金Project(61104088)supported by the National Natural Science Foundation of ChinaProject(12C0741)supported by Scientific Research Fund of Hunan Provincial Education Department,China
文摘The equivalent two-port network model of a middle range wireless power transfer(WPT) system was presented based on strongly coupled multiple resonators. The key parameters of the WPT system include self-inductance, resistance, parasitic capacitance, mutual inductance and S-parameters of coils & resonators were analyzed. The impedance matching method was used to optimize load power and transmission efficiency of the multi-resonator WPT system, and the impedance matching method was realized through adjusting the distances between the coils and resonators. Experiments show that the impedance matching method can effectively improve load power and transmission efficiency for middle range wireless power transfer systems with multiple resonators, at distances up to 3 times the coil radius with efficiency more than 70% and load power also close to 3.5 W.
文摘随着医疗技术的不断进步,植入式医疗设备IMD(implantable medical devices)在临床上的应用越来越多。由于传统的电池供电方式会给患者带来额外的组织损伤和手术成本,采用无线电能传输WPT(wireless power transfer)技术对IMD供电将成为今后的趋势。然而,如何在有限的空间内设计出高效率的IMD-WPT系统具有较大的挑战性。为此,对比了5种适用于IMD的WPT技术的性能特点;然后以磁谐振式WPT技术为例,具体介绍了磁谐振式IMD-WPT系统设计中的关键问题;最后结合部分磁谐振式WPT技术在一些典型IMD中的应用现状,讨论了IMD-WPT技术未来的研究方向。
