A Systematic Approach for Load Monitoring and Power Control in Wireless Power Transfer Systems Without Any Direct Output Measurement
A Systematic Approach for Load Monitoring and Power Control in Wireless Power Transfer Systems Without Any Direct Output Measurement
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DOI：
10.1109/tpel.2014.2317183
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发表时间：
2015-03
影响因子：
6.7
通讯作者：
Jian Yin;D. Lin;C. Lee;S. Hui
中科院分区：
文献类型：
--
作者：
Jian Yin;D. Lin;C. Lee;S. Hui
本文提出了一种系统的方法来表明，仅基于输入电压和电流的测量，无线功率传输系统的负载阻抗可以被瞬时监测和负载功率控制，而不使用来自负载的任何直接测量。介绍了一种基于输入电压和电流推导输出负载信息的新的数学方法。这种系统化的方法可以应用于具有两个或更多个线圈的无线电力系统，消除了对负载侧的传感器和通信设备的需要，从而大大简化了电力控制电路。的负载估计方法，功率损耗优化和控制方案的原理进行了描述和有利的验证，从八线圈无线电力传输系统获得的测量。
A systematic method is presented in this paper to show that, based only on the measurements of the input voltage and current, the load impedance of a wireless power transfer system can be instantaneously monitored and load power controlled without using any direct measurement from the load. A new mathematic procedure for deriving the output load information based on input voltage and current is explained. This systematic method, which can be applied to wireless power systems with two or more coils, eliminates the need for sensors and communication devices on the load side, thereby greatly simplifying the power control circuitry. The principle of the load estimation method, the power loss optimization and control scheme are described and favorably verified with measurements obtained from an eight-coil wireless power transfer system.