【摘要】：磁耦合諧振式無線電能傳輸(Wireless Power Transfer)技術是一種無需導體線直接相連的電能傳輸技術,相比于有線電能傳輸,具有安全可靠等優(yōu)點,特別是在一些易爆的礦井油井、水下環(huán)境等具有有線電能傳輸無可比擬的優(yōu)勢,更能在植入式醫(yī)療微電子設備及相關應用中起到巨大的作用,具有重大的科研意義。本文以植入式器件的無線供電為應用背景開展研究,以提高磁耦合諧振無線能量傳輸的傳輸效率為目標,首先分析了磁耦合諧振無線能量傳輸系統(tǒng)的電路模型,建立了二線圈和四線圈系統(tǒng)的完整和簡化電路模型,分析了線圈品質因數、耦合系數對系統(tǒng)性能的影響,并將四線圈諧振系統(tǒng)與二線圈諧振系統(tǒng)進行了對比;此外,針對四種電容補償結構分析了各自的優(yōu)缺點;然后,針對印制電路板線圈(Printed Circuit Board)實現(xiàn)的二線圈無線能量傳輸系統(tǒng),通過建立線圈的電感、寄生電阻和寄生電容的解析模型,找到系統(tǒng)工作的最優(yōu)工作頻率,并通過仿真和實驗進行了驗證;最后,針對腦機接口(Brain computer interfacing)中神經元信號采集等應用下的植入式器件的無線供電系統(tǒng),研究了毫米尺寸接收線圈為螺旋管(Solenoid)形式時的尺寸和工作頻率的優(yōu)化,經仿真和實驗驗證可知,當采用AWG36銅線繞制時,1-mm3尺寸的接收線圈的圈數為6,相鄰圈間距為0.2326mm時,線圈結構達到最優(yōu),最優(yōu)結構的最優(yōu)工作頻率為700MHz。
[Abstract]:Magnetic coupled resonant radio energy transmission (Wireless Power Transfer) technology is a kind of electric energy transmission technology without direct connection of conductor wire. Compared with wired power transmission, it has the advantages of safety and reliability, especially in some easy-to-explode mine wells. Underwater environment has incomparable advantages over wired power transmission, and can play a great role in implantable medical microelectronic devices and related applications, and has great scientific significance. In order to improve the transmission efficiency of magnetically coupled resonant wireless energy transmission, the circuit model of magnetic coupled resonant wireless energy transmission system is analyzed firstly, based on the application background of wireless power supply of implantable devices and the aim of improving the transmission efficiency of magnetically coupled resonant wireless energy transmission system. The integrated and simplified circuit models of the two-coil and four-coil systems are established. The effects of the coil quality factor and coupling coefficient on the performance of the system are analyzed, and the four-coil resonant system is compared with the two-coil resonant system. In addition, the advantages and disadvantages of the four kinds of capacitor compensation structures are analyzed. Then, aiming at the two-coil wireless energy transmission system of PCB coil (Printed Circuit Board), the optimal operating frequency of the system is found by establishing the analytical model of inductance, parasitic resistance and parasitic capacitance of the coil. It is verified by simulation and experiment. Finally, aiming at the wireless power supply system of implantable devices under the application of neuron signal acquisition in brain-computer interface (Brain computer interfacing), the optimization of the size and working frequency of millimeter-size receiving coil in the form of spiral tube (Solenoid) is studied. The simulation and experimental results show that when the AWG36 copper wire is used, the coil number of 1-mm3 size receiving coil is 6, and the distance between adjacent coils is 0.2326mm, the coil structure is optimal and the optimal working frequency of the optimal structure is 700MHz.
【學位授予單位】：杭州電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM724

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