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Analysis and Maximum Efficiency Design for Wireless Power Transfer Systems

机译：无线电力传输系统的分析与最大效率设计

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摘要

How to stabilize the output voltage while ensuring the maximum charging efficiency of the system is a problem faced by the development of wireless power transfer(WPT). Especially in the dynamic environment, the change of system coupling coefficient or load resistance will have a huge impact on the system. In this paper, a two-stage DC-DC converter control mode is used to control the system with the goal of dynamic charging demand. Among them, the system achieves impedance matching through the receiver DC-DC converter to ensure the transmission efficiency of the system, and in order to match the impedance, the voltage and current information in the coil is used to calculate the coupling coefficient, then, the coupling coefficient can be used to achieve maximum efficiency. The system output voltage is stabilized by using the transmitter DC-DC converter. The simulation experiment shows that the control mode can stabilize the output voltage well, and is more efficient than the single receiver closed loop control(SRCLP) system.
机译：如何稳定输出电压，同时确保系统的最大充电效率是无线电力传输（WPT）的开发面临的问题。特别是在动态环境中，系统耦合系数或负载电阻的变化将对系统产生巨大影响。在本文中，使用双级DC-DC转换器控制模式来控制系统的目标动态充电需求。其中，系统通过接收器DC-DC转换器实现阻抗匹配，以确保系统的传输效率，并且为了匹配阻抗，线圈中的电压和电流信息用于计算耦合系数，然后，耦合系数可用于实现最大效率。通过使用变送器DC-DC转换器稳定系统输出电压。仿真实验表明，控制模式可以稳定输出电压良好，比单接收器闭环控制（SRCLP）系统更有效。

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