【摘要】：磁耦合諧振式無線供電技術(shù)是一種新型的無線電能傳輸技術(shù),具有傳輸效率高、安全性能好的特點(diǎn),克服了許多傳統(tǒng)電能傳輸方式的不足,適用于中等傳輸距離,可以為幾種便捷式電子產(chǎn)品同時(shí)充電。該技術(shù)可以降低充電設(shè)備的成本、有利于環(huán)境保護(hù),因而可以應(yīng)用許多領(lǐng)域,為現(xiàn)代高科技發(fā)展時(shí)代和人們的生活帶來極大的方便。因此磁耦合諧振式無線供電技術(shù)的研究具有重要的學(xué)術(shù)意義和實(shí)用價(jià)值。本文詳細(xì)分析了磁耦合諧振式無線供電系統(tǒng)的工作原理和系統(tǒng)結(jié)構(gòu),研究了作為磁耦合諧振式無線供電系統(tǒng)傳輸媒介的近區(qū)磁場。在此基礎(chǔ)上,分析了磁耦合諧振式無線供電系統(tǒng)耦合模型。重點(diǎn)研究了無線供電系統(tǒng)的傳輸特性,影響系統(tǒng)傳輸特性的因素有：線圈參數(shù)、回路品質(zhì)因數(shù)、耦合線圈的互感系數(shù)、系統(tǒng)的諧振頻率等。在理論上對(duì)不同匝數(shù)線圈在不同諧振頻率和距離下對(duì)系統(tǒng)傳輸特性的影響進(jìn)行了分析,得到最優(yōu)線圈匝數(shù),最佳耦合距離和諧振頻率。對(duì)無線供電系統(tǒng)進(jìn)行了整體設(shè)計(jì),包括發(fā)射端電路、耦合線圈、接收端電路的設(shè)計(jì)。對(duì)發(fā)射端高頻逆變器電路進(jìn)行選型,計(jì)算阻尼吸收電路參數(shù)；對(duì)接收端整流電路、濾波電路、穩(wěn)壓電路進(jìn)行了具體設(shè)計(jì)和參數(shù)計(jì)算；對(duì)耦合線圈進(jìn)行了優(yōu)化設(shè)計(jì)；給出了無線供電系統(tǒng)結(jié)構(gòu)。對(duì)無線供電系統(tǒng)進(jìn)行了實(shí)驗(yàn)分析,以驗(yàn)證基于磁耦合諧振式無線供電系統(tǒng)的有效性。對(duì)系統(tǒng)測試結(jié)果表明了無線供電系統(tǒng)設(shè)計(jì)的合理性。驅(qū)動(dòng)器輸入輸出波形、逆變器輸出和發(fā)射線圈波形、空載電壓波形、能量傳輸波形、整流電路輸出波形、負(fù)載波形均滿足設(shè)計(jì)要求。對(duì)耦合線圈在不同距離下進(jìn)行了實(shí)際實(shí)驗(yàn),驗(yàn)證了理論推導(dǎo)的正確性。頻率優(yōu)化實(shí)驗(yàn)表明所設(shè)計(jì)的無線供電系統(tǒng)當(dāng)頻率在一定范圍內(nèi)變化時(shí),系統(tǒng)仍能穩(wěn)定工作。電源電壓變壓實(shí)驗(yàn)表明,增加電源電壓,能夠有效地提高系統(tǒng)的效率和接收功率。綜合實(shí)驗(yàn)表明,本文所設(shè)計(jì)的無線供電系統(tǒng)具有傳輸效率高、穩(wěn)定等特點(diǎn)。
[Abstract]:Magnetic coupling resonant wireless power supply technology is a new type of radio energy transmission technology, which has the characteristics of high transmission efficiency and good security performance. It overcomes the shortcomings of many traditional power transmission modes and is suitable for medium transmission distance. Several convenient electronic products can be charged at the same time. This technology can reduce the cost of charging equipment and is beneficial to environmental protection, so it can be applied in many fields and bring great convenience to modern high-tech development era and people's life. Therefore, the research of magnetic coupling resonant wireless power supply technology has important academic significance and practical value. In this paper, the working principle and system structure of the magnetic coupling resonant wireless power supply system are analyzed in detail, and the near region magnetic field which is used as the transmission medium of the magnetic coupling resonance type wireless power supply system is studied. On this basis, the coupling model of magnetic coupling resonant wireless power supply system is analyzed. The transmission characteristics of wireless power supply system are mainly studied. The factors influencing the transmission characteristics are: coil parameters, loop quality factor, mutual inductance coefficient of coupling coils, resonance frequency of the system, and so on. In this paper, the influence of different turns on the transmission characteristics of the system at different resonant frequencies and distances is analyzed theoretically, and the optimal number of coils, the optimum coupling distance and the resonant frequency are obtained. The wireless power supply system is designed, including transmitter circuit, coupling coil and receiver circuit. The parameters of the damping absorption circuit are calculated, the rectifier circuit, filter circuit and voltage stabilizer circuit are designed and calculated, and the coupling coil is optimized. The structure of wireless power supply system is given. The experimental analysis of wireless power supply system is carried out to verify the effectiveness of the wireless power supply system based on magnetic coupling resonance. The test results show that the design of wireless power supply system is reasonable. Driver input and output waveform, inverter output and transmit coil waveform, no-load voltage waveform, energy transmission waveform, rectifier circuit output waveform, load waveform all meet the design requirements. Experiments on coupling coils at different distances have been carried out to verify the correctness of the theoretical derivation. Frequency optimization experiments show that the designed wireless power supply system can work stably when the frequency varies within a certain range. The power supply voltage conversion experiment shows that increasing the supply voltage can effectively improve the efficiency and the receiving power of the system. Comprehensive experiments show that the wireless power supply system designed in this paper has the characteristics of high transmission efficiency and stability.
【學(xué)位授予單位】：東北大學(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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