磁耦合谐振式无线电能传输的研究

发布时间：2018-02-20 00:55

本文关键词： 无线电能传输磁耦合谐振传输特性功效积　出处：《华北电力大学》2014年硕士论文　论文类型：学位论文

【摘要】：无线电能传输技术是一种以电场和磁场为介质的新型电能传输技术。目前无线电能的三种主要传输方式为感应耦合式、电磁波辐射式、磁耦合谐振式，相对于前两种传输方式，磁耦合谐振式在传输特性、传输方向性、穿透性和安全性等方面都具有较大的优势，因此该传输方式引起了国内外研究人员的重视，成为当前共同关注的热点并具有良好的发展前景。本文首先简要分析了磁耦合谐振式无线电能传输系统的基本工作原理，及实现无线电能传输的磁耦合和谐振两大关键因素。在此基础上，，设计完成了串联-串联拓扑补偿式磁耦合谐振无线电能传输系统，并搭建实验平台进行了实验验证。基于电路理论对所设计系统的等效谐振耦合回路进行了建模分析，得出影响系统传输特性的因素，包括传输距离、谐振频率、品质因数等。然后分别以传输距离、谐振频率、品质因数为变量，分析研究输出功率和传输效率特性，并进行了Matlab仿真和实验验证。为解决系统在满足输出功率较大时，传输效率却比较低的问题，本文提出了功效积这一综合系统评估指标，从而实现系统参数的优化，并就系统在最大功率和最大功效积两个指标下的输出功率和传输效率进行了对比分析，最后通过Matlab仿真和实验结果验证了功效积指标的可行性。
[Abstract]:Radio energy transmission technology is a new type of electric energy transmission technology with electric field and magnetic field as the medium. At present, the three main transmission modes of radio energy are induction coupling, electromagnetic wave radiation, magnetic coupling resonance, compared with the first two transmission modes. Magnetic coupling resonance has great advantages in transmission characteristics, transmission direction, penetration and security, so the transmission mode has attracted the attention of researchers at home and abroad. It has become the focus of common concern and has a good development prospect. In this paper, the basic working principle of the magnetically coupled resonant radio energy transmission system and the two key factors of magnetic coupling and resonance in the realization of wireless power transmission are briefly analyzed in this paper. A series-series topology compensated magnetically coupled resonant radio transmission system is designed and the experimental platform is built to verify it. Based on the circuit theory, the equivalent resonant coupling circuit of the designed system is modeled and analyzed, and the factors affecting the transmission characteristics of the system are obtained, including transmission distance, resonant frequency, quality factor, etc. The quality factor is a variable. The characteristics of output power and transmission efficiency are analyzed and studied, and the Matlab simulation and experiment are carried out to solve the problem that the transmission efficiency of the system is low when the output power is high. In this paper, the function product, a comprehensive system evaluation index, is proposed to optimize the system parameters, and the output power and transmission efficiency of the system under the two indexes of maximum power and maximum effect product are compared and analyzed. Finally, the feasibility of the effectiveness product index is verified by Matlab simulation and experimental results.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM724

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