无线电能传输系统信号与电能同步传输技术

发布时间：2018-04-01 16:43

本文选题：感应式无线电能传输　切入点：信号同步传输　出处：《哈尔滨工业大学》2017年硕士论文

【摘要】：随着科技日新月异的发展,人们在各个领域都取得了长足的进步。在全球对电能需求日渐增长的同时,传统输电方式的弊端也逐渐显露出来。围绕新型输电方式的研究,衍生出无线电能传输技术,在多个领域内有了成熟可靠的应用。现阶段无线电能传输技术仍有很大的研究空间,包括信号与电能同步传输技术、电磁兼容性等。本文从研究稳定可靠的信号同步传输技术角度出发,设计感应式无线电能传输系统各部分结构,并对松耦合变压器进行研究。首先,本文分析感应式无线电能传输系统的结构,从电路功能角度将系统分为四大部分,依次比较分析各部分常见拓扑的优劣。研究四种基本补偿结构的特性,归纳串联补偿结构下系统电压电流的输出特性,为接下来的研究奠定基础。其次,本文详细分析四种有代表性的信号同步传输技术;结合已确定的感应式无线电能传输系统拓扑,从理论上分析改变补偿电容对于信号传输的可行性。综合考虑三种调制解调方式后,设计一种基于改变谐振电容的信号与电能同步传输方案,对实现电路的工作模态进行详细地分析,并从设计思路、参数选取等角度阐述系统硬件设计。再次,本文对信号传输信道-松耦合变压器进行优化设计。先对EE型磁芯松耦合变压器建立修正磁路模型,通过计算得出圆形线圈宽度的最优取值。再利用Ansoft有限元分析工具,对线圈尺寸、宽度、磁芯结构数量等参数进行仿真分析,仿真结论验证理论分析的正确性,确定松耦合变压器优化设计的目标与方向。最后,本文利用Cadence Pspice分析工具对感应式无线电能传输系统信号与电能同步传输技术进行仿真验证,观测各点波形,优化参数并搭建实验平台。在实验平台上,按照理论分析和仿真结果,对系统的逆变器中点电压电流、负载电压、负载恒压输出特性和信号双向发送与提取技术进行了效果验证,取得了理想的结果。
[Abstract]:With the rapid development of science and technology, people have made great progress in various fields. With the increasing global demand for electricity, the disadvantages of traditional transmission methods are gradually exposed. The radio energy transmission technology has been developed and has been used in many fields. At present, the radio energy transmission technology still has a lot of research space, including the synchronous transmission technology of signal and electric energy. Electromagnetic compatibility and so on. From the point of view of stable and reliable signal synchronous transmission technology, this paper designs the structure of inductive radio energy transmission system, and studies the loosely coupled transformer. This paper analyzes the structure of inductive radio energy transmission system, divides the system into four parts from the point of view of circuit function, compares and analyzes the advantages and disadvantages of the common topologies of each part in turn, and studies the characteristics of the four basic compensation structures. The output characteristics of the system voltage and current under the series compensation structure are summarized, which lays a foundation for the following research. Secondly, four typical synchronous signal transmission techniques are analyzed in detail in this paper. Combining with the topology of inductive radio energy transmission system, the feasibility of changing compensation capacitor for signal transmission is analyzed theoretically. After considering three modulation and demodulation modes, A synchronous transmission scheme of signal and electric energy based on changing resonant capacitance is designed. The working mode of the circuit is analyzed in detail, and the hardware design of the system is described from the point of view of design idea, parameter selection and so on. This paper optimizes the design of signal transmission channel-loosely coupled transformer. First, the modified magnetic circuit model is established for EE type loosely coupled transformer with magnetic core, and the optimum value of the width of circular coil is obtained by calculation. Then the Ansoft finite element analysis tool is used. The parameters such as coil size, width and the number of magnetic core structure are simulated and analyzed. The simulation results verify the correctness of the theoretical analysis, and determine the objective and direction of the optimal design of loosely coupled transformers. In this paper, Cadence Pspice analysis tool is used to simulate and verify the synchronous transmission technology of signal and electric energy of inductive radio energy transmission system, to observe the waveform of each point, to optimize the parameters and to build the experimental platform. According to the theoretical analysis and simulation results, the effect of the inverter midpoint voltage and current, load voltage, load constant voltage output characteristics and signal bidirectional transmission and extraction technology are verified, and the ideal results are obtained.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM724

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