摘要
磁谐振耦合式无线能量传输系统的工作频率直接影响到系统的效率和最大传输功率。对一种工作在数百千赫兹频率段的磁谐振耦合式无线能量传输系统进行频率特性研究,基于该无线能量传输系统在不同传输距离条件下线圈自感和互感参数建立无线能量传输系统的Simulink模型。研究无线能量传输系统工作频率变化时系统的频率-效率和频率-输出功率特性。根据系统的频率特性提出了一种通过调节系统频率控制输出功率的方法,并通过仿真和实际电动汽车动力电池组恒流充电验证了该方法的有效性。
The frequency of a wireless power transfer （ WPT） system via magnetic coupling resonant is very impor-tant because it can be the limitation of the efficiency and the maximum transfer power of the WPT system .In this paper , the frequency characteristic of a WTP system via magnetic resonant coupling is explored .A simulation mod-el is build based on the self inductance parameters and the mutual inductance parameters under different transfer distances .Using this model , efficiency and output power are researched when system frequency is changing .An output power controlling method is proposed by adjusting the system frequency , and the method is proved to be ef-fective by simulation and constant current charging experiment of lithium-ion battery .
出处
《电工电能新技术》
CSCD
北大核心
2014年第9期35-40,共6页
Advanced Technology of Electrical Engineering and Energy
关键词
无线能量传输
磁谐振耦合
频率特性
功率控制
wireless power transfer
magnetic coupling resonant
frequency characteristic
power control
