【摘要】：磁諧振耦合式無(wú)線能量傳輸技術(shù)作為一種新型能量傳輸技術(shù)是近年來(lái)國(guó)內(nèi)外科研機(jī)構(gòu)的研究熱點(diǎn)。該技術(shù)通過(guò)諧振線圈在特定工作頻率下產(chǎn)生變化的高頻磁場(chǎng)。當(dāng)不同諧振線圈產(chǎn)生的磁場(chǎng)頻率相同時(shí),磁場(chǎng)發(fā)生共振,形成共振能量傳輸通道,實(shí)現(xiàn)能量的無(wú)線傳輸。相對(duì)于傳統(tǒng)感應(yīng)無(wú)線能量傳輸方式,其能量傳輸距離更遠(yuǎn),且傳輸方向不受限制,因而具有更廣闊的應(yīng)用前景。 本文的研究?jī)?nèi)容包括磁諧振耦合無(wú)線能量傳輸基本原理分析,小型無(wú)線能量傳輸裝置設(shè)計(jì),影響能量傳輸?shù)年P(guān)鍵因素分析,系統(tǒng)各級(jí)效率分析等�；谏鲜隼碚摲治�,重點(diǎn)研究了一種優(yōu)化的諧振線圈。 本文首先建立了磁諧振耦合式無(wú)線能量傳輸?shù)臄?shù)學(xué)模型,應(yīng)用耦合模理論和電路理論的方法分別對(duì)系統(tǒng)進(jìn)行了理論分析和計(jì)算,分析了系統(tǒng)的基本工作原理和能量傳輸通道；并且用MATLAB軟件計(jì)算了諧振線圈的電壓和電流,驗(yàn)證了所建等效電路模型的正確性。 諧振線圈是磁諧振耦合技術(shù)中的關(guān)鍵單元。本文比較了常見(jiàn)的平面螺旋型和圓柱型線圈的結(jié)構(gòu)和磁場(chǎng)分布特點(diǎn),采用平面螺旋型線圈作為諧振線圈。給出了平面螺旋型諧振線圈的一種優(yōu)化設(shè)計(jì)方法——傳輸線模型法,包括結(jié)構(gòu)參數(shù)優(yōu)化設(shè)計(jì)、等效集總參數(shù)建模分析及計(jì)算。并將此算法用MATLAB程序?qū)崿F(xiàn),計(jì)算得出諧振線圈的等效電路參數(shù)和諧振頻率；設(shè)計(jì)并制作了兩個(gè)結(jié)構(gòu)參數(shù)完全相同的平面螺旋型線圈,測(cè)量了其等效電路參數(shù)和本征頻率,實(shí)測(cè)值與程序計(jì)算值誤差在10%以內(nèi)。 本文按照磁諧振耦合式無(wú)線能量傳輸?shù)南到y(tǒng)設(shè)計(jì)要點(diǎn),以及諧振線圈頻率、線圈空載品質(zhì)因數(shù)、線圈之間的能量傳輸效率、系統(tǒng)整體傳輸效率、系統(tǒng)最遠(yuǎn)能量傳輸距離等評(píng)價(jià)指標(biāo),利用所設(shè)計(jì)線圈完成了一個(gè)小型磁諧振耦合式無(wú)線能量傳輸裝置,并對(duì)該裝置的電壓電流波形、功率曲線等系統(tǒng)參數(shù)和實(shí)際工作效率進(jìn)行了測(cè)試和計(jì)算,得到了系統(tǒng)能量傳輸效率與關(guān)鍵影響因素之間的關(guān)系曲線。實(shí)驗(yàn)表明,該裝置在50cm距離下可以隔空點(diǎn)亮15w燈泡,系統(tǒng)整機(jī)效率達(dá)62%。
[Abstract]:As a new type of energy transmission technology, magnetic resonance coupled wireless energy transmission technology has been a hot research topic in domestic and foreign scientific research institutions in recent years. The technique uses resonant coils to produce a variable high-frequency magnetic field at a particular operating frequency. When the frequency of magnetic field produced by different resonant coils is the same, the magnetic field resonates and forms a resonant energy transmission channel to realize the wireless transmission of energy. Compared with the traditional inductive wireless energy transmission mode, its energy transmission distance is longer, and the transmission direction is unlimited, so it has a wider application prospect. The research contents of this paper include the basic principle analysis of the magnetic resonance coupling wireless energy transmission, the design of the small wireless energy transmission device, the analysis of the key factors affecting the energy transmission, and the analysis of the system efficiency at all levels. Based on the above theoretical analysis, an optimized resonant coil is studied. In this paper, the mathematical model of magnetic resonance coupled wireless energy transmission is established, the coupling mode theory and circuit theory are applied to analyze and calculate the system, and the basic working principle and energy transmission channel of the system are analyzed. The voltage and current of the resonant coil are calculated by MATLAB software, and the correctness of the equivalent circuit model is verified. The resonant coil is the key unit in the magnetic resonance coupling technology. In this paper, the structure and magnetic field distribution characteristics of planar helical coil and cylindrical coil are compared. The planar helical coil is used as resonant coil. In this paper, an optimal design method of planar helical resonant coils, transmission line model method, is presented, including structural parameter optimization, equivalent lumped parameter modeling, analysis and calculation. The equivalent circuit parameters and resonant frequencies of resonant coils are calculated by using MATLAB program, and two planar helical coils with identical structure parameters are designed and fabricated, and their equivalent circuit parameters and intrinsic frequencies are measured. The error between the measured value and the calculated value is less than 10%. In this paper, according to the key points of the system design of the magnetic resonance coupling wireless energy transmission, the frequency of the resonant coil, the quality factor of the coil without load, the energy transmission efficiency between the coils, the overall transmission efficiency of the system are discussed. The farthest energy transmission distance of the system is evaluated. A small magnetic resonance coupled wireless energy transmission device is completed by using the designed coil, and the voltage and current waveforms of the device are given. The system parameters such as power curve and actual working efficiency are measured and calculated, and the relationship between the system energy transmission efficiency and the key factors is obtained. The experiment shows that the device can light 15w light bulb in the distance of 50cm, and the efficiency of the whole system is 62%.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM724

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