电场耦合无线电能传输系统耦合机构研究

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重庆大学硕士学位论文
英文摘要
discussed. After all, analysis on the thickness and material of electrode had been performed. Analysis above can provide some theoretical guidance for the engineering design of the coupling structure.
耦合机构作为 ECPT 系统的核心部件，其结构、参数与特性直接关系到系统 的灵活性、传输功率、效率以及整个系统的性能。目前关于 ECPT 耦合机构的研 究已经取得一定的进展，但是仍然存在灵活度差，传输功率及效率低等缺点。本 文针对灵活度差的问题，提出了一种新型的耦合机构，并对其进行了优化，此外， 为了提升系统功率和效率，分别对耦合机构电介质、电极材料、厚度进行了研究。
ECPT coupling mechanism, as the core component of the system, its structure, parameters and characteristics directly related to the flexibility, transmission power, efficiency of the entire system. Up to now, the research on coupling mechanism has made some progress, but the coupling is still not flexible enough and the efficiency is not so high. To solve the problem of poor flexibility, a novel coupling mechanism was proposed and been optimized, in addition, in order to enhance transmission power and efficiency, dielectric, electrode material and thickness were studied respectively.
For the improvement of the transmission power and the efficiency, first of all, the main parameters of the dielectric were analyzed. Then air and PZT, as two typical dielectric, their maximum output voltage, operating frequency range, and dielectric loss had been studied, also, the equivalent coupling capacitance of mixed media had been
College of Automation of Chongqing University, Chongqing, China.
April 2014
重庆大学硕士学位论文
中文摘要
摘要
电场耦合电能传输（ECPT）技术作为无线电能传输技术的一种，因其独特的 优势得到了越来越多国内外科研机构和政府的重视。该技术综合利用现代电力电 子技术、微电子技术、电场仿真等技术，借助现代控制理论和方法，实现电能的 无线传输。
Firstly, introduction of the domestic and abroad research status of ECPT coupling mechanism technology, and a brief description of the coupling mechanism’s basic principle had been given. Then analysis on several typical coupling mechanism had been performed comparatively, and simulation on the electric field distribution had been researched based on simulation models in Maxwell. Characteristics and applications of these typical coupling mechanism had been summarized.
Secondly, in order to solve the problem of lack of flexibility, a new disc coupling mechanism had been proposed. Parameter optimization had been carried out under certain coupling area, aiming to maximize the equivalent capacitance. Then cross coupling had been researched in the case of misalignment between the pickup and the transmitter. In a certain range of the offset distance, a function expression between that and the ratio of the output voltage and the input voltage had been carried out. In addition, on the basis of electric field simulation analysis, the electric field distribution of the coupling mechanism had been optimized by Chamfering the edge of the pickup electrodes.
关键词：无线电能传输，电场耦合，耦合机构
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重庆大学硕士学位论文
英文摘要
Abstract
Electrical-field coupled power transfer, as a wireless power transmission technology, because of its unique advantages, is getting more and more attention from domestic and foreign institutions and government. By utilizing the technology of power electronics, energy conversion and electromagnetic simulation, also with the help of modern control theory and methods, it realizes power transmission wirelessly.
首先，对 ECPT 耦合机构的国内外现状进行了研究，详细分析了几种典型的 耦合机构，并基于电磁场仿真软件 Maxwell 建立了各自的仿真模型，对各自的电 场分布进行了仿真分析，总结了这几种典型耦合机构的特点以及应用场合。
其次，针对目前 ECPT 耦合机构普遍存在的灵活性不足的问题，提出了新型 圆盘耦合机构。在耦合面积确定的情况下，以等效耦合电容最大化为目标对其进 行了参数优化。在此基础之上，研究了拾取端与发射端错位情况下的交叉耦合， 给出了偏移距离在一定范围内，耦合机构的输出输入电压比关于偏移距离的函数 表达式，并与传统圆盘式耦合机构进行了对比分析。另外，在对该耦合机构进行 了电场仿真分析的基础之上，提出了一种对拾取电极进行边缘倒角以优化耦合机 构电场分布的方法。
Transmission System
A Thesis Submitted to Chongqing University in Partial Fulfillment of the Requirement for the
Master’s Degree of Engineering
By Sun Yu Supervised by Prof. Su Yugang Specialty: Control Science and Engineering
Keywords: Wireless power transfer, Electrical-field coupled, Coupling mechanis
目录
中文摘要 ·····································································································I 英文摘要 ····································································································II 1 绪论 ·········································································································1
电场耦合无线电能传输系统耦合机构研究
重庆大学硕士学位论文
（学术学位） 学生姓名：孙 雨 指导教师：苏玉刚 教 授 专 业：控制科学与工程 学科门类：工 学
重庆大学自动化学院
二 O 一四年四月
Study on the Coupling Mechanism in Electric-field Coupled Wireless Power