面向低压输入MC-WPT系统高增益桥式补偿网络研究

由于无线电能传输系统松耦合特性,传统无线电能传输系统的输入输出增益普遍较低.这在光伏类型的低压输入高压输出应用中面临增益不足难题.提出一种基于桥式补偿网络的新型电能变换拓扑,研究基于桥式补偿网络的MC-WPT系统的阻抗特性以及能量传输特性,给出改进型桥式补偿网络方案.在此基础上,提出桥式补偿网络的参数设计设计方法.最后,本文通过实验验证所提出方法的正确性,可实现2～9倍的输入输出增益.

Research on high gain bridge compensation network for low voltage input MC-WPT system

Due to the loosely coupled characteristics of wireless power transfer (WPT) systems, the gain from input voltage to output voltage of traditional WPT systems are generally low. This is the problem of insufficient gain in the application of low voltage input and high voltage output of photovoltaic. In this paper, a new power conversion topology based on bridge compensation network is proposed. The impedance characteristics and energy transmission characteristics of the system based on bridge compensation network are studied, and an improved bridge compensation network scheme is given. On this basis, the parameter design method of bridge compensation network is proposed. Finally, the validity of the proposed method is verified by experiments, which can achieve 2-9 times gain from input voltage to output voltage.