不同频率和脉宽的方波激励下无线电能传输效果分析

发布时间：2018-01-03 10:34

本文关键词：不同频率和脉宽的方波激励下无线电能传输效果分析　出处：《电力系统自动化》2015年16期 　论文类型：期刊论文

【摘要】：磁谐振式无线电能传输技术是基于磁谐振耦合现象利用近区磁场进行非辐射性、中距离输电的新技术。许多结果采用正弦交变电流作为激励,计算耦合电压和传输功率。脉冲激励也可以产生交变磁场从而感生交变电流,此方式下的无线电能传输有其自身特点。文中分析了脉冲激励下的电路响应过程及谐振耦合机理,其耦合过程本质上也是正弦波的耦合。在同一输出电压的情况下,与正弦激励相比,用脉冲方波做激励,负载可以获得较大的传输功率。最后,通过实验比较了几种脉宽和频率不同的方波激励的传输效果。实验结果表明,可以使用低频脉冲信号控制高频谐振线圈,从而实现更为有效的无线电能传输。
[Abstract]:The magnetic resonant wireless power transmission technology is a non radiative phenomenon of magnetic resonance coupling using near zone magnetic field based on the new technology in distance transmission. Many results using sinusoidal alternating current as excitation voltage and the coupled calculation of the transmission power. The pulse excitation can also generate alternating magnetic field which induces an alternating current, in this case the radio energy transmission has its own characteristics. This paper analyzes the pulse circuit response and resonant coupling mechanism, coupling the coupling process is essentially a sine wave. At the same output voltage, compared with sinusoidal excitation, pulse square wave excitation, the load can be obtained. Finally, large transmission power the effect of transmission, several different excitation pulse width and frequency square wave were compared by experiments. The experimental results show that the low frequency pulse signal can be used to control the high frequency resonant coil, so as to achieve more For effective radio transmission.

【作者单位】：中国科学院电工研究所;中国科学院大学;中国科学院微电子研究所;
【基金】：国家自然科学基金资助项目(51207150) 北京市自然科学基金资助项目(4144090)~~
【分类号】：TM724
【正文快照】： 3.中国科学院微电子研究所,北京市100029)0引言无线电能传输技术是支持负载设备以非接触方式从电源取电的电能输送技术,其构想可追溯至20世纪初美国科学家特斯拉所设想的电磁波发射塔,具有实用意义的技术形式则是近十几年才出现,但已初步得到应用并彰显出旺盛的生命力。早期对

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