多维旋转式无线输电装置的研究与设计

发布时间：2018-06-24 14:43

本文选题：谐振式输电 + 多发射线圈　；参考：《华南理工大学》2014年硕士论文

【摘要】：随着科学技术的发展以及科学家的大胆尝试，未来的无线电能传输技术将给电力生产和输送两大问题带来极大便利。一直以来，世界各国的科学家为了实现电能的无线传输做出了巨大的努力。从最早期的尼古拉特斯拉对于无线输电的宏伟计划，到最近麻省理工学院物理学教授马里恩索佳西奇的无线灯泡实验，都证实了科学家们的努力。在日常生活与生产中，无线电能传输的应用前景非常广阔，其应用领域涉及军事，医学，交通以及日常家用电器等。然而，一直以来无线电能的传输仍然无法突破距离和效率的限制，无法大规模高效率进行推广应用。而最近取得的研究成果令人振奋，让人们越来越感觉到无线输电给日常生活所带来的好处。谐振式无线电能传输技术是利用电磁谐振原理以及突破传统利用耦合式电磁感应原理及利用无线电波原理的无线电能传输技术，并使电能的无线传输成为了可能。首先，本文基于空间距离两空心线圈的电磁场互感耦合模型，并分析了线圈大小以及两个空心线圈空间距离和电能传输效率的关系，同时分析电能传输效率的影响因素以及计算公式，进一步深入了解影响无线输电技术的因素。并且通过对多发射源谐振式无线输电系统特性分析，研究多个发射源同时存在时对负载供电的影响，，并通过空间几何结构分析进行等效简化，得出多个发射源共存时会增加系统分析的复杂程度，而简化后的无线输电装置大大降低了分析难度。同时，本文重点对无线电能传输的线圈模型进行研究，探讨无线输电线圈的最佳实现方式，以实现谐振式无线电能传输系统优化设计的目标。设计制作了一个多维旋转式无线输电装置，通过转速和线圈个数组合的对比分析来优化系统设计，进一步对本文理论分析进行验证。其次，为了验证本课题的理论正确性，本文还制作了一套样机来对理论分析进行验证，样机的制作关键在于优化线圈的能量传递方式，即如何通过线圈的优化设计实现能量多维传递。因此，如果通过功率源的旋转来实现能量的多维传递必然存在一定的安全隐患，而本文通过对无线输电中继线圈的优化设计，即通过对中继线圈加装旋转电机，将中继线圈由传统的静态能量传递方式改变为动态的能量传递方式，实际上就是通过在近场改变中继线圈所产生的磁场的变化形式，使得磁场通过旋转变化达到能量的多维传递效果，既保证了功率源的安全性又能同时对多负载进行能量供应。通过试验表明谐振式无线电能传输如果采用多发射线圈模型将增加系统成本和复杂程度，而本文提出的多维旋转转式动态输电线圈的理论方案很好解决了无线输电方向性及多负载同时供电的难题，并有利于无线输电系统的推广应用。但是，在实验验证过程中我们发现旋转中继线圈在旋转的过程中存在死区，即负载接收到的能量是断续的，而我们发现这个死区的角度非常小，为了解决这个问题，经过多次实验，我们发现通过将中继线圈设计成十字架形状就能很好的消除死区，并能降低旋转速度，因此，我们提出了进一步的线圈优化设计方案。最后，对本次课题研究的主要工作内容进行了总结，并针对该课题在设计过程中遇到的问题，提出了进一步研究的设想。
[Abstract]:With the development of science and technology and the bold attempt of scientists, the future radio transmission technology will bring great convenience to the two major problems of electric power production and transportation. The grand plan, to the recent Massachusetts Institute of Technology physics professor Marion Alfonso Jia Txiki's wireless light bulb experiments, confirmed the efforts of scientists. In daily life and production, radio transmission has a very broad prospect of application in military, medical, transportation, and daily household appliances. The transmission of wire energy is still unable to break through the limits of distance and efficiency and can not be popularized in large scale and high efficiency. The recent research results are exciting, making people more and more aware of the benefits of wireless transmission to daily life. Using the principle of coupled electromagnetic induction and radio transmission technology based on radio wave principle, it is possible to transmit wireless power.
First, this paper is based on the mutual inductance coupling model of the two hollow coil with space distance, and analyses the relationship between the size of the coil and the space distance of the two hollow coils and the transmission efficiency of the electric energy. It also analyzes the influence factors and the calculation formula of the power transmission efficiency, and further understands the factors affecting the wireless transmission technology. In this paper, the characteristics of multi source resonant transmission system are analyzed, and the influence of multiple emission sources on the load power supply is studied, and the space geometric structure analysis is used to simplify the system. The complexity of the system analysis will be increased when multiple sources coexist. The simplified wireless transmission device greatly reduces the difficulty of analysis. In this paper, the paper focuses on the study of the radio transmission coil model, discusses the best way to realize the wireless transmission coil, so as to achieve the goal of optimizing the design of the resonant radio energy transmission system. A multi-dimensional rotary wireless transmission device is designed and made, and the system design is optimized through the contrast analysis of the combination of rotation speed and the number of coils. The theoretical analysis of this paper is further verified.
Secondly, in order to verify the correctness of the theory, a prototype is also made to verify the theoretical analysis. The key to the production of the prototype is to optimize the energy transfer mode of the coil, that is, how to achieve multidimensional transfer of energy through the optimization of the coil. In this paper, through the optimization design of the wireless transmission relay coil, this paper changes the relay coil from the traditional static energy transfer mode to the dynamic energy transfer mode by adding the rotary motor to the relay coil, in fact it is the change of the magnetic field generated by the relay coil in the near field. In form, the multidimensional transfer effect of the magnetic field is achieved through rotation, which ensures both the security of the power source and the supply of energy at the same time. It is shown by experiments that the system costs and complexity will be increased if the multiple transmission coil model is used for the transmission of the resonant radio, and the multidimensional rotational rotation proposed in this paper is proposed. The theoretical scheme of the dynamic transmission coil can solve the problem of wireless transmission direction and multi load simultaneous power supply, and is beneficial to the popularization and application of the wireless transmission system. However, in the process of experimental verification, we found that there is a dead zone in the rotation of the rotating relay coil, that is, the energy received by the load is intermittent, and we find that the energy is interrupted. The angle of the dead zone is very small. In order to solve this problem, after many experiments, we find that the dead zone can be eliminated well and the rotation speed can be reduced by designing the relay coil into the shape of the cross. Therefore, we propose a further optimization design of the coil.
Finally, the main work of this study is summarized, and further research is put forward in view of the problems encountered in the design process.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM724

【参考文献】