【摘要】：近年來(lái)，隨著動(dòng)力電池技術(shù)的不斷提升，電動(dòng)汽車產(chǎn)業(yè)得到了迅速的發(fā)展，為了大力推廣電動(dòng)汽車，需要建設(shè)大量的充電站為電動(dòng)汽車蓄電池補(bǔ)充電能，由于充電機(jī)需要快速?gòu)碾娋W(wǎng)上獲取很大的電流，而且它是一種非線性負(fù)載，會(huì)給電網(wǎng)帶來(lái)很大的諧波污染，因此研究帶有功率因數(shù)校正功能的整流器具有重要的意義。 在三相整流器拓?fù)浣Y(jié)構(gòu)中，三相VIENNA整流器具有網(wǎng)側(cè)電能質(zhì)量好、開(kāi)關(guān)器件少、管應(yīng)力小、直流母線無(wú)直通危險(xiǎn)等優(yōu)點(diǎn)，因此本文以三相VIENNA整流拓?fù)錇檠芯繉?duì)象，從拓?fù)涞墓ぷ髟�、�?shù)學(xué)模型、控制策略上進(jìn)行了深入的研究，在此基礎(chǔ)上進(jìn)行了主拓?fù)潢P(guān)鍵器件的選擇，設(shè)計(jì)了系統(tǒng)的硬件電路，并編寫控制程序。 本文深入研究了三電平空間矢量控制方法，在此基礎(chǔ)上分析了載波移相控制策略，三角載波移相調(diào)制產(chǎn)生的開(kāi)關(guān)狀態(tài)，與空間矢量調(diào)制產(chǎn)生的開(kāi)關(guān)狀態(tài)一致，其參考矢量都是由其所在小三角扇區(qū)的基本矢量來(lái)合成，各基本矢量對(duì)應(yīng)的開(kāi)關(guān)狀態(tài)按一定的時(shí)間序列控制開(kāi)關(guān)管，這樣達(dá)到了空間矢量控制的效果，同時(shí)使控制方法變的更簡(jiǎn)化。針對(duì)直流母線中點(diǎn)電位不平衡，通過(guò)將中點(diǎn)電位的差值疊加到電流環(huán)的參考電壓中，來(lái)動(dòng)態(tài)調(diào)節(jié)直流母線正負(fù)電壓的平衡。由于該系統(tǒng)無(wú)中線，不能直接采樣相電壓，本文通過(guò)采樣輸入端和直流母線中點(diǎn)之間的電壓，經(jīng)過(guò)改進(jìn)控制算法的處理獲得各相電壓，從而簡(jiǎn)化了硬件電路。 完成以上理論的分析，，在Matlab中搭建了該系統(tǒng)的仿真模型，仿真結(jié)果驗(yàn)證了理論分析的正確性。最后設(shè)計(jì)了一臺(tái)基于DSP控制的實(shí)驗(yàn)樣機(jī)，實(shí)驗(yàn)結(jié)果表明該拓?fù)湓谳d波移相控制策略的控制下具有網(wǎng)側(cè)電能質(zhì)量好、諧波含量小，而且能動(dòng)態(tài)調(diào)節(jié)直流母線中性點(diǎn)平衡等優(yōu)點(diǎn)。
[Abstract]:In recent years, with the continuous improvement of power battery technology, the electric vehicle industry has been rapid development, in order to vigorously promote electric vehicles, it is necessary to build a large number of charging stations to replenish electric energy for electric vehicle batteries. It is very important to study rectifier with power factor correction (PFC) because the charger needs to obtain a large current from the power grid quickly and it is a nonlinear load that will bring a lot of harmonic pollution to the power grid. In the topology structure of three-phase rectifier, three-phase VIENNA rectifier has the advantages of good power quality on the grid side, less switching devices, less stress of the tube, no direct current danger of DC busbar, etc. Therefore, the three-phase VIENNA rectifier topology is taken as the research object in this paper. In this paper, the working principle, mathematical model and control strategy of the topology are deeply studied. On this basis, the main topology key devices are selected, the hardware circuit of the system is designed, and the control program is written. In this paper, the three-level space vector control method is deeply studied, and then the carrier phase shift control strategy is analyzed. The switching state generated by triangular carrier phase shift modulation is consistent with the switching state generated by space vector modulation. The reference vectors are all synthesized by the basic vectors in the small triangular sector. The switching state of each basic vector is controlled according to a certain time series, which achieves the effect of space vector control. At the same time, the control method is simplified. In view of the imbalance of the midpoint potential of DC busbar, the balance of positive and negative voltage of DC bus is dynamically adjusted by adding the difference of midpoint potential to the reference voltage of the current loop. Because the system has no center line and can not directly sample the phase voltage, this paper obtains each phase voltage by sampling the voltage between the input terminal and the midpoint of the DC bus, and obtains each phase voltage by the improved control algorithm, which simplifies the hardware circuit. The simulation model of the system is built in Matlab, and the simulation results verify the correctness of the theoretical analysis. Finally, an experimental prototype based on DSP control is designed. The experimental results show that the topology has the advantages of good power quality, low harmonic content and dynamic adjustment of DC bus neutral balance under the control of carrier phase shift control strategy.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM461;U469.72

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張曉;李成君;張迎;孫華;;并聯(lián)型APF直流側(cè)中點(diǎn)電位平衡控制的研究[J];電力電子技術(shù);2011年03期

2 王珂;袁野;;三電平變頻器中點(diǎn)電位控制策略研究[J];變頻器世界;2012年03期

3 江才;宋文勝;王順亮;韓坤;馮曉云;;一種三電平中性點(diǎn)鉗位逆變器中點(diǎn)電位控制算法[J];電力系統(tǒng)自動(dòng)化;2014年07期

4 程志友;于浩;程紅江;葉姍姍;;虛擬矢量的中點(diǎn)電位平衡三電平調(diào)制方法[J];安徽大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年02期

5 馬秀麗;何鳳有;;雙三電平變頻器直流側(cè)中點(diǎn)電位平衡策略研究與實(shí)現(xiàn)[J];電氣技術(shù);2010年03期

6 劉建波;尹傳濤;;五相三電平H橋變頻器中點(diǎn)電位漂移抑制方法研究[J];船電技術(shù);2011年05期

7 周京華;賈斌;章小衛(wèi);陳亞愛(ài);;混合式三電平中點(diǎn)電位平衡控制策略[J];中國(guó)電機(jī)工程學(xué)報(bào);2013年24期

8 張?jiān)气P;王羽;韓冬;張俊升;;基于電荷平衡的三電平中點(diǎn)電位尋優(yōu)控制[J];電力電子技術(shù);2014年08期

9 姚文熙,呂征宇,費(fèi)萬(wàn)民,錢照明;一種新的三電平中點(diǎn)電位滯環(huán)控制法[J];中國(guó)電機(jī)工程學(xué)報(bào);2005年07期

10 肖景魁;;三相三線制電路中點(diǎn)電位不為零現(xiàn)象分析[J];沈陽(yáng)教育學(xué)院學(xué)報(bào);2006年03期

相關(guān)會(huì)議論文 前3條

1 馬文忠;吳海波;王志;張偉;李耀榮;;三相四橋臂逆變器中點(diǎn)電位平衡控制策略的研究[A];2011中國(guó)電工技術(shù)學(xué)會(huì)學(xué)術(shù)年會(huì)論文集[C];2011年

2 金舜;鐘彥儒;明正峰;王建淵;;一種消除窄脈沖并控制中點(diǎn)電位的三電平PWM方法[A];中國(guó)電工技術(shù)學(xué)會(huì)電力電子學(xué)會(huì)第八屆學(xué)術(shù)年會(huì)論文集[C];2002年

3 蘇廣寧;趙玲;雷s

本文編號(hào)：2407851