铁磁性干扰体对磁耦合谐振无线输电系统的影响

发布时间：2018-03-13 09:29

本文选题：谐振式无线输电　切入点：铁磁材料干扰　出处：《电工技术学报》2014年S1期 　论文类型：期刊论文

【摘要】：基于开关柜、变压器温度监测传感器供电等应用场景,研究构成开关柜柜体,变压器箱体、铁心等铁磁性材料类干扰体的存在对传输系统特性的影响。本文采用Ansoft磁场计算软件计算有无铁质柜体、是否含有铁心等条件下发射及接收端参数,而后利用得到的参数采用Pspice电路仿真软件计算系统传输特性,并与实验结果进行比较。铁磁材料对谐振式无线传输系统的干扰主要体现在影响系统线圈电感及发射端与接收端耦合系数两个方面,仿真结果显示铁磁材料的存在使得线圈电感增大,系统脱离原谐振频率导致传输效率下降;同时使得耦合系数增大,增强了传输效率,但增强幅度较小。同时研究发现由于位置的不对称性,干扰体对发射端和接收端的干扰大小不同即发射端和接收端受到干扰后谐振频率变化不同。
[Abstract]:Based on the application scenarios such as switchgear, transformer temperature monitoring sensor and so on, the paper studies the structure of switchgear cabinet and transformer box. The influence of the interference of ferromagnetic materials such as iron core on the characteristics of transmission system. In this paper, Ansoft magnetic field calculation software is used to calculate whether there is an iron cabinet and whether it contains the parameters of the transmitting and receiving ends under the condition of iron core, etc. Then the transmission characteristics of the system are calculated by using the Pspice circuit simulation software. Compared with the experimental results, the interference of ferromagnetic materials to the resonant wireless transmission system is mainly reflected in two aspects: the inductance of the coil and the coupling coefficient between the transmitter and the receiver. The simulation results show that the existence of ferromagnetic material increases the inductance of the coil and the transmission efficiency decreases due to the system detaching from the original resonant frequency, and the coupling coefficient increases and the transmission efficiency is enhanced. At the same time, it is found that because of the asymmetry of the position, the magnitude of interference between the transmitter and the receiver is different, that is, the resonant frequency of the transmitter and receiver is different after being interfered.
【作者单位】：中国科学院电工研究所;中国科学院大学;
【基金】：国家自然科学基金(51307157) 新能源电力系统国家重点实验室开放课题(LAPS14010)资助项目
【分类号】：TM724

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