摘要
此处为磁耦合谐振式无线电能传输系统(MCR-WPT)设计了一种新型的电能接收器,并给出了最佳工作点的计算方法。首先根据磁共振传能系统的特点建立了接收器的等效电路,然后从平均输入功率的角度分析传统接收器的缺陷,接着利用基尔霍夫定律推导了电感补偿接收器的临界电感值的计算公式,通过电路仿真研究电感补偿接收器的工作特性曲线,分析了负载和电能频率对该特性曲线的影响,尤其是对最佳工作点的影响。在最佳工作点处,补偿电感可大大提高接收器的电能利用率,最后通过实验验证了理论分析和仿真结果的准确性。
A novel pick-up with improved power utilization is designed for the magnetically coupled resonant wireless power transfer（MCR-WPT） system.The calculation approach to work at the best operation point is given.The equivalent circuit of the traditional pick-up is developed based on the characteristics of MCR-WPT system.Its drawbacks are analyzed in the respect of average input power.Then, the equation of critical inductance of the proposed pick-up is derived using Kirehhoff＇s laws.The working characteristic curve is investigated basing on the numerical simulation. The effects of loads and power frequency on the best operation point are studied.It is found that the power utilization of the pick-up is highly improved by the compensating inductance when working at the best point.Finally,a prototype system is made and gives a verification of the theoretical analysis and simulation results.
出处
《电力电子技术》
CSCD
北大核心
2015年第10期98-101,共4页
Power Electronics
基金
江苏省工业支撑计划项目(BE2013130)
江苏省自然科学基金(BK20141431)~~
关键词
无线电能传输
磁耦合谐振
电能利用率
电感补偿
wireless power transfer
magnetic coupled resonance
power utilization
inductance compensation
