本文選題：無線電能傳輸 + 電場耦合　； 參考：《重慶大學》2014年碩士論文

【摘要】：電場耦合電能傳輸（ECPT）技術(shù)作為無線電能傳輸技術(shù)的一種，因其獨特的優(yōu)勢得到了越來越多國內(nèi)外科研機構(gòu)和政府的重視。該技術(shù)綜合利用現(xiàn)代電力電子技術(shù)、微電子技術(shù)、電場仿真等技術(shù)，借助現(xiàn)代控制理論和方法，實現(xiàn)電能的無線傳輸。 耦合機構(gòu)作為ECPT系統(tǒng)的核心部件，其結(jié)構(gòu)、參數(shù)與特性直接關(guān)系到系統(tǒng)的靈活性、傳輸功率、效率以及整個系統(tǒng)的性能。目前關(guān)于ECPT耦合機構(gòu)的研究已經(jīng)取得一定的進展，但是仍然存在靈活度差，傳輸功率及效率低等缺點。本文針對靈活度差的問題，提出了一種新型的耦合機構(gòu)，并對其進行了優(yōu)化，此外，為了提升系統(tǒng)功率和效率，分別對耦合機構(gòu)電介質(zhì)、電極材料、厚度進行了研究。 首先，對ECPT耦合機構(gòu)的國內(nèi)外現(xiàn)狀進行了研究，詳細分析了幾種典型的耦合機構(gòu)，并基于電磁場仿真軟件Maxwell建立了各自的仿真模型，對各自的電場分布進行了仿真分析，總結(jié)了這幾種典型耦合機構(gòu)的特點以及應(yīng)用場合。 其次，針對目前ECPT耦合機構(gòu)普遍存在的靈活性不足的問題，提出了新型圓盤耦合機構(gòu)。在耦合面積確定的情況下，以等效耦合電容最大化為目標對其進行了參數(shù)優(yōu)化。在此基礎(chǔ)之上，研究了拾取端與發(fā)射端錯位情況下的交叉耦合，給出了偏移距離在一定范圍內(nèi)，耦合機構(gòu)的輸出輸入電壓比關(guān)于偏移距離的函數(shù)表達式，并與傳統(tǒng)圓盤式耦合機構(gòu)進行了對比分析。另外，在對該耦合機構(gòu)進行了電場仿真分析的基礎(chǔ)之上，提出了一種對拾取電極進行邊緣倒角以優(yōu)化耦合機構(gòu)電場分布的方法。 對于ECPT耦合機構(gòu)的功效提升，本文首先對電介質(zhì)的主要參數(shù)進行了分析；對于兩種具有典型代表的電介質(zhì)空氣和PZT，，分析了各自的最大輸出電壓、工作頻率范圍，以及介質(zhì)損耗；討論了混合介質(zhì)的等效耦合電容；對電極的厚度以及材料進行了簡要的分析。以上分析可為耦合機構(gòu)的工程設(shè)計提供一定的理論指導。 最后基于Matlab/Simulink仿真平臺，建立了仿真模型，針對新型圓盤耦合機構(gòu)處于完全耦合、偏移距離1.5以及偏移距離2三種情況分別對系統(tǒng)進行了仿真分析。在理論研究以及仿真分析的基礎(chǔ)之上，搭建了實驗裝置，給出了實驗結(jié)果，并進行了實驗分析。
[Abstract]:As a kind of radio energy transmission technology, electric field coupled power transmission (ECPT) technology has been paid more and more attention to by scientific research institutions and governments at home and abroad because of its unique advantages. This technology synthetically utilizes modern power electronics technology, microelectronics technology, electric field simulation technology and so on, and realizes the wireless transmission of electric energy with the aid of modern control theory and method. As the core component of ECPT system, the structure, parameters and characteristics of coupling mechanism are directly related to the flexibility, transmission power, efficiency and performance of the whole system. At present, some progress has been made in the study of ECPT coupling mechanism, but there are still some shortcomings such as poor flexibility, low transmission power and efficiency. In order to improve the power and efficiency of the system, a novel coupling mechanism is proposed and optimized. In addition, the dielectric, electrode material and thickness of the coupling mechanism are studied respectively in order to improve the power and efficiency of the system. Firstly, the current situation of ECPT coupling mechanism at home and abroad is studied, several typical coupling mechanisms are analyzed in detail, and their simulation models are established based on electromagnetic field simulation software Maxwell, and their electric field distribution is simulated and analyzed. The characteristics and applications of these typical coupling mechanisms are summarized. Secondly, a new type of disk coupling mechanism is proposed to solve the problem of lack of flexibility of ECPT coupling mechanism. When the coupling area is determined, the parameters are optimized to maximize the equivalent coupling capacitance. On this basis, the cross-coupling between the pickup and the transmitter is studied, and the functional expression of the output input voltage ratio of the coupling mechanism in a certain range of offset distance is given. It is compared with the traditional disk coupling mechanism. In addition, on the basis of the electric field simulation analysis of the coupling mechanism, a method of optimizing the electric field distribution of the coupling mechanism by using the edge chamfering of the pickup electrode is proposed. For the efficiency improvement of ECPT coupling mechanism, the main parameters of dielectric are analyzed firstly, the maximum output voltage, operating frequency range and dielectric loss of two typical dielectric air and PZT are analyzed. The equivalent coupling capacitance of the mixed medium is discussed, the electrode thickness and material are analyzed briefly. The above analysis can provide some theoretical guidance for the engineering design of coupling mechanism. Finally, based on the Matlab/Simulink simulation platform, the simulation model is established. The system is simulated and analyzed in three cases: the new disk coupling mechanism is fully coupled, the offset distance is 1.5 and the offset distance is two. On the basis of theoretical research and simulation analysis, the experimental device is built, the experimental results are given, and the experimental analysis is carried out.
【學位授予單位】：重慶大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM724

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本文編號：1927221