Fundamental Analysis and Development of the Current and Voltage Control Method by Changing the Driving Frequency for the Transcutaneous Energy Transmission System
Fundamental Analysis and Development of the Current and Voltage Control Method by Changing the Driving Frequency for the Transcutaneous Energy Transmission System
复制标题
经皮能量传输系统改变驱动频率的电流电压控制方法的基础分析与发展
DOI：
10.1109/embc.2015.7318611
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
T. Yambe
中科院分区：
文献类型：
--
作者：
H. Miura;A. Yamada;Y. Shiraishi;T. Yambe
我们正在开发用于心室辅助装置、形状记忆合金（SMA）纤维人工器官等的经皮能量传输系统（TETS），该系统具有效率高、体积小等优点。本文综述了TETS的发展、设计方法和特点。提出了稳定TETS输出电压或电流的新的控制方法。这些方法都是初级方，都是体外的，不依赖于一个来自体内的通讯系统。基本上，TETS在固定频率下工作，具有适当的补偿电容器，从而使内部阻抗最小化，并获得平坦的负载特性。然而，当线圈偏离最佳位置时，耦合因子改变，输出波动。TETS具有谐振特性;其输出可以通过改变驱动频率来控制。通过改变驱动频率和设置低边频率限制，实现了连续电流-连续电压驱动方法。该方法适用于电驱动人工心脏的电池充电系统，也适用于需要间歇性高峰功耗的SMA纤维人工器官。在该系统中，当光纤断开时，内部存储电容器缓慢充电，当光纤接通时，内部存储电容器释放能量，我们研究了该系统的效果。发现TETS的尺寸和最大输出将能够被减小。
We have been developing transcutaneous energy transmission system (TETS) for a ventricular assist device, shape memory alloy (SMA) fibered artificial organs and so on, the system has high efficiency and a compact size. In this paper, we summarize the development, design method and characteristics of the TETS. New control methods for stabilizing output voltage or current of the TETS are proposed. These methods are primary side, are outside of the body, not depending on a communication system from the inside the body. Basically, the TETS operates at the fixed frequency with a suitable compensation capacitor so that the internal impedance is minimalized and a flat load characteristic is obtained. However, when the coil shifted from the optimal position, the coupling factor changes and the output is fluctuated. TETS has a resonant property; its output can be controlled by changing the driving frequency. The continuous current to continuous voltage driving method was implemented by changing driving frequency and setting of limitation of low side frequency. This method is useful for battery charging system for electrically driven artificial hearts and also useful for SMA fibered artificial organs which need intermittent high peak power comsumption. In this system, the internal storage capacitor is charged slowly while the fibers are turned off and discharge the energy when the fibers are turned on. We examined the effect of the system. It was found that the size and maximum output of the TETS would able to be reduced.