摘要
针对煤矿井下复杂环境,为了提高其WPT(Wireless Power Transmission无线电能传输)功率并降低发射端线圈电压,改进了井下WPT发射端的线圈结构,并提出了适合井下WPT的传输模型。根据电路互感耦合理论,推导出WPT系统传输功率与传输效率的数学表达式,分别阐述了耦合系数、输入频率、负载大小对传输功率与传输效率的影响。设计过程中应用Or CAD与Matlab软件对传输系统各个影响因素进行仿真分析,在此基础上设计并制作了实验平台。实验分析得出此传输系统存在最佳功率传输距离和最佳效率传输距离,总体实验结果与理论仿真结果一致,最后通过与典型WPT系统做对比实验分析,得出改进WPT系统提高了传输功率,可为实际井下WPT提供理论参考。
In terms of the complicated environment in coal mine,in order to enhance the power of the WPT（ Wireless Power Transmission） system and reduce the transmitter coil voltage,the coil structure of the WPT system transmitter was improved and the transmission model for the WPT system was proposed. According to the theory of mutual inductance coupling circuit,the mathematical expressions of WPT system transmission power and transmission efficiency were deduced. The impacts of coupling coefficient,input frequency and load on the transmission power and transmission efficiency were elaborated separately. In the design process,the Or CAD and Matlab were used to simulate and analyze the various influential factors of the transmission system. Based on the studies above,an experimental platform was designed and fabricated. The optimum power transmission distance and optimum efficiency transmission distance of the WPT system were obtained through the experimental analysis. The experimental results are totally consistent with the simulation results. Compared those experiments with a typical WPT system,the transmission power of the improved WPT system is increased,which provides a theoretical reference for the field practice of the WPT system in coal mine.
作者
刘晓文
王习
陈迪
赵端
杨优芳
丁恩杰
LIU Xiao-wen WANG Xi CHEN Di ZHAO Duan YANG You-fang DING En-jie(College of Information and Electrical Engineering, China University of Mining and Technology,Xuzhou 221008, China lnternet of Things （Mine Per- ception） Research Center, China University of Mining and Technology, Xuzhou 221008, China National ＆ Local Joint Engineering Laboratory of Mining Internet Technology on Mine, Xuzhou 221008, China)
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2016年第11期2889-2896,共8页
Journal of China Coal Society
基金
国家重点基础研究发展计划(973)资助项目(2014CB046300)
关键词
磁耦合谐振
无线电能传输
耦合系数
负载
magnetic coupling resonance
wireless power transmission
coupling coefficient
load
