磁耦合谐振式无线能量传输系统传输特性研究

发布时间：2018-05-15 16:34

本文选题：磁耦合 + 谐振　；参考：《郑州大学》2014年硕士论文

【摘要】：近年来，越来越多的电子产品的涌现使得如何充电日益受到关注，太多的充电设备已经成为负担，无线能量传输技术成为研究热点。其中的磁耦合谐振式无线能量传输技术具有优异的传输效率和能较远的传输，是目前国际上主流的研究无线充电设施的技术。关于磁耦合谐振式无线电能传输，其传输距离对无线电能传输来说是一个很大的挑战，因此，本文对磁耦合谐振式无线能量传输技术的发射和接收线圈的结构参数进行了基础性理论研究。根据磁耦合谐振式无线电能传输技术的理论分析研究，本文采用Hilbert分形线圈代替环形的发射线圈和接收线圈。分析了系统的传输机理，能量传输以及应该遵守的准则，以往研究中都是耦合模公式建立数字模型，具有一定的缺点。针对这一问题，首先，利用互感耦合建立的数字模型，然后用电路理论分析建立等效的电路模型，能够将耦合模公式建立数字模型简化，很好的分析影响能量传输的关键因素。在无线电能传输系统中，本文利用Hilbert分形天线代替传统的环形线圈，在很大程度上减小了接收端尺寸。在此基础上，分析影响能量传输的关键因素，得到系统传输的最大传输效率。利用上述方法对磁耦合无线电能传输进行仿真实验，，通过计算传输距离，传输效率等几个参数对系统性能进行评估。结果及其分析表明在相同的发射和接收面积下，Hilbert分形天线代替环形天线，能够较好的传输能量，有效地减小了接收端尺寸。对比于其他的磁耦合谐振式无线电能传输，该方法对接收端尺寸明显减小，保证了传输距离和传输效率同时也满足了无线电能传输的要求。
[Abstract]:In recent years, the emergence of more and more electronic products, how to charge more and more attention, too many charging equipment has become a burden, wireless energy transmission technology has become a research hotspot. The magnetically coupled resonant wireless energy transmission technology, which has excellent transmission efficiency and far away transmission, is the mainstream technology in the world to study wireless charging facilities. With regard to the transmission of magnetically coupled resonant radio energy, the transmission distance is a great challenge for radio energy transmission. In this paper, the structure parameters of transmitting and receiving coils of magnetic coupling resonant wireless energy transmission technology are studied theoretically. According to the theoretical analysis and study of the magnetically coupled resonant radio energy transmission technology, the Hilbert fractal coil is used to replace the ring transmitting coil and the receiving coil. The transmission mechanism of the system, the energy transmission and the criteria that should be observed are analyzed. In the past, the coupled mode formula is used to establish the digital model, which has some shortcomings. In order to solve this problem, the digital model established by mutual inductance coupling and the equivalent circuit model by circuit theory analysis can be used to simplify the digital model of coupling mode formula and analyze the key factors that affect energy transmission. In the radio energy transmission system, the Hilbert fractal antenna is used to replace the traditional ring coil, which greatly reduces the size of the receiver. On this basis, the key factors affecting energy transmission are analyzed, and the maximum transmission efficiency of the system is obtained. The system performance is evaluated by calculating the transmission distance and transmission efficiency. The results show that the Hilbert fractal antenna can replace the annular antenna under the same transmitting and receiving area, which can transmit better energy and reduce the size of the receiver effectively. Compared with the other magnetically coupled resonant radio energy transmission, the size of the receiver is reduced obviously, and the transmission distance and transmission efficiency are guaranteed to meet the requirements of radio energy transmission at the same time.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM724

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