本文選題：無線電能傳輸 + 串/并式　； 參考：《江南大學(xué)》2015年碩士論文

【摘要】：無線電能傳輸(Wirelss Power Transmission簡稱WPT)技術(shù)得到迅速發(fā)展,已在電動汽車的移動充電、手機(jī)的無線充電、人工器官移植等領(lǐng)域得到廣泛的應(yīng)用。傳統(tǒng)的發(fā)射側(cè)和接收側(cè)都是串聯(lián)諧振,簡稱串/串式(S/S)WPT,存在對穩(wěn)定性不夠好和對負(fù)載變化敏感度較高的缺點(diǎn),目前對發(fā)射側(cè)串聯(lián)諧振、接收側(cè)并聯(lián)諧振,簡稱串/并式(S/P)WPT,系統(tǒng)特性的研究相對較少,且只是局限于傳輸模型的搭建和理論分析,缺少對整個系統(tǒng)的總體分析,缺乏實(shí)踐性,且傳輸功率較小,一般在幾十瓦,沒有充分利用諧振點(diǎn)實(shí)現(xiàn)零電壓零電流軟開關(guān)(ZVZCS),傳輸效率有待提高。針對WPT系統(tǒng)現(xiàn)存的問題本課題對大功率S/P式磁共振WPT系統(tǒng)的研究,具有一定的實(shí)際意義。針對S/P式WPT系統(tǒng)的傳輸功率和傳輸效率問題,本課題對S/P式WPT系統(tǒng)的傳輸模型進(jìn)行了詳細(xì)的分析,將S/P式和傳統(tǒng)的S/S式WPT系統(tǒng)的傳輸性能進(jìn)行比較,分析S/P式WPT系統(tǒng)的傳輸特性。根據(jù)電路理論推導(dǎo)系統(tǒng)的傳輸功率和最大效率的表達(dá)式,得到S/P式的WPT系統(tǒng)的傳輸性能的優(yōu)點(diǎn)。在解決開關(guān)損耗問題上,本課題將磁耦合諧振零電流開關(guān)(ZCS)全橋DC/DC變換器應(yīng)用到S/P式WPT傳輸系統(tǒng)中,用于降低系統(tǒng)的傳輸損耗,提高傳輸效率。為實(shí)現(xiàn)ZCS的控制目標(biāo),對發(fā)射端逆變器的工作模態(tài)進(jìn)行了詳細(xì)分析,與鎖相技術(shù)相配合,實(shí)現(xiàn)接收回路的諧振頻率始終與發(fā)射回路的諧振頻率即逆變器的開關(guān)頻率相一致的控制策略。在控制電路的設(shè)計中采用基于TMS320F2407DSP芯片為核心的數(shù)字控制系統(tǒng),硬件和軟件相結(jié)合,實(shí)現(xiàn)逆變器控制的頻率跟蹤。功率控制通過改變Buck電路驅(qū)動信號來改變輸入端直流電壓幅值從而實(shí)現(xiàn)功率調(diào)節(jié)。通過理論分析,利用Pspice仿真軟件對磁共振串/并式WPT系統(tǒng)的運(yùn)行狀況進(jìn)行了仿真,得出各部分相應(yīng)的輸出波形,搭建了系統(tǒng)對應(yīng)的實(shí)驗(yàn)樣機(jī),給出了實(shí)驗(yàn)結(jié)果。
[Abstract]:Wireless power transmission Wirelss Power Transmission technology has been developed rapidly and has been widely used in the fields of mobile charging of electric vehicles, wireless charging of mobile phones, artificial organ transplantation and so on. The traditional transmitting side and receiving side are series resonance, which is referred to as serial / serial type S / S / S / WPT.It has the disadvantages of not good stability and high sensitivity to load variation. At present, the series resonance on the transmitting side and the parallel resonance on the receiving side. The study of system characteristics is relatively few, and is limited to the construction of transmission model and theoretical analysis. It lacks the overall analysis of the whole system, lack of practicality, and the transmission power is relatively small, generally in the tens of watts. The zero voltage and zero current soft switching is not fully realized by using the resonance point, and the transmission efficiency needs to be improved. In view of the existing problems of WPT system, the research of high power S / P magnetic resonance WPT system has certain practical significance. Aiming at the transmission power and transmission efficiency of S / P type WPT system, the transmission model of S / P type WPT system is analyzed in detail, and the transmission performance of S / P type WPT system is compared with that of the traditional S / P type WPT system. The transmission characteristics of S / P WPT system are analyzed. According to the circuit theory, the expressions of the transmission power and maximum efficiency of the system are derived, and the advantages of the transmission performance of the S / P type WPT system are obtained. In order to solve the switching loss problem, this paper applies the magnetically coupled resonant zero-current-switching (ZCS) full-bridge DC/DC converter to the S / P type WPT transmission system, which is used to reduce the transmission loss and improve the transmission efficiency. In order to realize the control goal of ZCS, the working mode of the transmitter inverter is analyzed in detail, which is coordinated with the phase-locked technology. The resonant frequency of the receiving loop is always consistent with the resonant frequency of the transmitting loop, that is, the switching frequency of the inverter. In the design of control circuit, the digital control system based on TMS320F2407DSP chip is adopted, and the hardware and software are combined to realize the frequency tracking of inverter control. Power control can change the DC voltage amplitude of input by changing the driving signal of Buck circuit to realize power regulation. Based on the theoretical analysis and Pspice simulation software, the operation of the magnetic resonance serial / parallel WPT system is simulated, the corresponding output waveforms of each part are obtained, the corresponding experimental prototype of the system is built, and the experimental results are given.
【學(xué)位授予單位】：江南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM724

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