基于LCC-串联谐振的磁耦合无线电能传输系统研究

发布时间：2018-06-13 09:23

本文选题：磁场耦合谐振 + 无线电能传输　；参考：《山东大学》2017年硕士论文

【摘要】：随着科学技术的日益进步和经济水平的不断提高,世界的能源态势也随之发生了前所未有的变化,电力在能源消费中所占比重与日俱增。对比有线电能传输方式,无线电能传输技术的诸多优势使其成为当前的研究热点。磁场耦合谐振方式无线电能传输技术具有传输距离适中、传输功率较大、鲁棒性好、适应特殊环境等优点,具有广阔的应用前景。目前该领域已有一些研究成果,但距离实用化仍有一些的距离,尚有部分关键技术问题尚未解决,亟待研究。本文首先介绍了几种无线电能传输技术,简单说明了它们的基本结构、传输原理和发展现状。随后分析了磁场耦合谐振方式无线电能传输技术的基本耦合原理、研究现状,说明谐振拓扑结构对无线电能传输系统影响密切,然后利用电路理论建立了串联-串联谐振拓扑结构的无线电能传输系统模型,并分析其传输特性。该系统在小负载阻值的条件下传输功率不高,并不适合应用于电池无线充电系统中。并依此设计LCC-串联谐振拓扑结构的无线电能传输系统,利用交流阻抗分析法建立无线电能传输系统模型,分析其恒压输出传输特性,在小负载阻值的条件下传输功率较高,适合应用于电池无线充电系统中。然后针对磁场耦合谐振方式无线电能传输系统的核心环节谐振线圈进行分析,利用有限元仿真分析方法仿真当谐振线圈的部分参数发生变化时,谐振线圈的自感、互感和耦合系数的变化趋势,总结谐振线圈的设计原则,并以此原则设计谐振线圈。最后,设计硬件电路,搭建基于LCC-串联谐振拓扑结构的磁场耦合谐振方式无线电能传输系统硬件实验平台,并进行实验验证其传输特性。实验表明本文设计的基于LCC-串联谐振拓扑结构的无线电能传输系统硬件实验平台可以实现电能的无线传输,在85kHz工作频率、传输距离8cm、负载电阻100Ω时,传输效率达到95.23%。实验还分析了硬件实验平台的传输特性,与理论分析结果大致吻合。
[Abstract]:With the development of science and technology and the improvement of economic level, the energy situation of the world has changed unprecedented, and the proportion of electricity in energy consumption is increasing day by day. Compared with wired power transmission mode, radio energy transmission technology has become a hot research topic due to its many advantages. The magnetic field coupled resonant radio transmission technology has the advantages of moderate transmission distance, large transmission power, good robustness and adaptability to special environment, so it has a broad application prospect. At present, there are some research achievements in this field, but there is still some distance from practicality, and there are still some key technical problems to be solved, which need to be studied urgently. In this paper, several radio energy transmission technologies are introduced, and their basic structure, transmission principle and development are briefly described. Then, the basic coupling principle of the magnetic field coupled resonant radio energy transmission technology is analyzed, and the current research situation shows that the resonant topology has a close effect on the radio energy transmission system. Based on the circuit theory, the radio energy transmission system model of series-series resonance topology is established and its transmission characteristics are analyzed. The transmission power of the system is not high under the condition of low load resistance, so it is not suitable for the battery wireless charging system. The radio energy transmission system with LCC-series resonant topology is designed. The model of radio energy transmission system is established by using AC impedance analysis method. The transmission characteristics of constant voltage output are analyzed. The transmission power is high under the condition of low load resistance. Suitable for battery wireless charging system. Then the resonance coil of the core link of the magnetic field coupled resonant mode radio energy transmission system is analyzed, and the self-inductance of the resonant coil is simulated by the finite element simulation method when some parameters of the resonant coil change. The design principle of resonant coil is summarized and the resonant coil is designed according to the variation trend of mutual inductance and coupling coefficient. Finally, the hardware circuit is designed, and the hardware experimental platform of magnetic field coupled resonant radio transmission system based on LCC-series resonant topology is built, and its transmission characteristics are verified by experiments. The experiment results show that the wireless energy transmission system based on LCC-series resonant topology can realize wireless transmission of electric energy. The transmission efficiency is 95.23 when the working frequency is 85kHz, the transmission distance is 8 cm, and the load resistance is 100 惟. The transmission characteristics of the hardware experimental platform are also analyzed, which are in good agreement with the theoretical analysis results.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM724

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