基于电压比控制的感应式无线充电系统

An Inductive Wireless Charging System Based on Voltage Ratio Control

传统的串串型感应式功率传输系统为了保持软开关技术,一般变换器的调制深度浅.为了提高调制深度可以采用Buck-SSIPT的拓扑结构进行改进.当所设计的Buck-SSIPT系统线圈的等效电阻很小且系统传输频率很高时,Buck-SSIPT系统的电压增益与等效电阻比是等比例的关系.本文提出了一种基于电压比控制的Buck-SSIPT充电系统,并在MATLAB/Simulink环境下搭建仿真模型.仿真结果表明,基于电压比控制下的系统具有稳定的电压输出,且当电压比为1时系统的传输效率是最高的.

In order to maintain the soft-switching technology of the traditional inductive power transmission system of series-series type,the modulation depth of the general converter is shallow.To increase the modulation depth,we can improve the topology of Buck-SSIPT.When the equivalent resistance of the designed Buck-SSIPT system coil is very small and the transmission frequency of the system is high,the voltage gain of the Buck-SSIPT system is proportional to the equivalent resistance.This paper presents a Buck-SSIPT charging system based on voltage ratio control,and builds a simulation model in MATLAB/Simulink environment.The simulation results show that the system based on the voltage ratio control has a stable voltage output,and the transmission efficiency of the system is the highest when the voltage ratio is 1.