本文選題：PWM整流器 + 模型預(yù)測(cè)　； 參考：《河南科技大學(xué)》2017年碩士論文

【摘要】：由不可控器件二極管和半控型器件晶閘管構(gòu)成早期的整流電路進(jìn)行整流,這種整流電路,由于結(jié)構(gòu)簡(jiǎn)單,易于實(shí)現(xiàn),但是存在較高的電流諧波分量并且向電網(wǎng)吸收無(wú)功功率,對(duì)電網(wǎng)產(chǎn)生了一定的污染。PWM整流器由于輸入電流諧波畸變率低;網(wǎng)側(cè)電流正弦化;電能雙向傳輸;功率因數(shù)高等優(yōu)點(diǎn)已逐步替代了早期的整流電路,因此PWM整流器也得到了廣大學(xué)者的重視,并且對(duì)其控制策略進(jìn)行更深入地研究具有重大的意義。本文首先對(duì)三相電壓型PWM整流器的拓?fù)浣Y(jié)構(gòu)和四象限運(yùn)行原理進(jìn)行了分析,應(yīng)用坐標(biāo)變換理論,在三相靜止abc坐標(biāo)系和兩相靜止αβ坐標(biāo)系下建立相應(yīng)的數(shù)學(xué)模型。其次介紹了傳統(tǒng)的直接功率控制策略,針對(duì)該控制策略存在功率開(kāi)關(guān)的開(kāi)關(guān)頻率不固定,網(wǎng)側(cè)電流諧波分量高等缺點(diǎn),提出一種基于模型預(yù)測(cè)三相電壓型PWM整流器直接功率控制策略,該控制策略實(shí)現(xiàn)雙閉環(huán)控制,同時(shí)應(yīng)用SVPWM技術(shù)實(shí)現(xiàn)固定的開(kāi)關(guān)頻率,為了能盡可能的降低系統(tǒng)的成本又提出了一種基于虛擬磁鏈三相PWM整流器模型預(yù)測(cè)直接功率控制策略,通過(guò)設(shè)計(jì)虛擬磁鏈觀測(cè)器進(jìn)行磁鏈觀測(cè)從而來(lái)省去交流側(cè)電壓互感器,提高了系統(tǒng)的經(jīng)濟(jì)性。第三針對(duì)本文提出的這兩種控制策略在MATLAB/Simulink中搭建系統(tǒng)仿真模型,通過(guò)仿真和對(duì)比分析驗(yàn)證這兩種控制策略的優(yōu)越性。最后,在理論分析的基礎(chǔ)上,針對(duì)這兩種PWM整流器控制方法進(jìn)行了系統(tǒng)的總體方案設(shè)計(jì)。對(duì)系統(tǒng)的主電路、控制電路、檢測(cè)電路、驅(qū)動(dòng)電路進(jìn)行硬件設(shè)計(jì),并對(duì)該系統(tǒng)進(jìn)行了軟件流程設(shè)計(jì)。
[Abstract]:The early rectifier circuit is composed of an uncontrollable device diode and a half-controlled device thyristor. The rectifier circuit is simple in structure and easy to realize, but it has a high current harmonic component and absorbs reactive power to the power network. The PWM rectifier has some advantages such as low harmonic distortion rate of input current, sinusoidal current on the grid side, two-way transmission of electric energy, high power factor and so on, which have gradually replaced the early rectifier circuit. Therefore, PWM rectifier has been paid more attention by many scholars, and it is of great significance to study its control strategy more deeply. In this paper, the topological structure and four-quadrant operation principle of three-phase voltage-source PWM rectifier are analyzed, and the corresponding mathematical models are established in three-phase static abc coordinate system and two-phase static 偽 尾 coordinate system by using coordinate transformation theory. Secondly, this paper introduces the traditional direct power control strategy, aiming at the shortcomings of the switching frequency of the power switch and the high harmonic component of the network side current. A direct power control strategy for three-phase voltage source PWM rectifier based on model prediction is proposed. The control strategy realizes double closed loop control and the fixed switching frequency is realized by using SVPWM technology. In order to reduce the cost of the system as much as possible and propose a direct power control strategy based on the virtual flux chain three-phase PWM rectifier model, a virtual flux observer is designed to observe the flux so as to save the AC side voltage transformer. The economy of the system is improved. Thirdly, the system simulation model is built in MATLAB / Simulink for the two control strategies proposed in this paper. The superiority of the two control strategies is verified by simulation and comparative analysis. Finally, on the basis of theoretical analysis, the overall scheme of the two PWM rectifier control methods is designed. The main circuit, control circuit, detection circuit and drive circuit of the system are designed, and the software flow is designed.
【學(xué)位授予單位】：河南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM461

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張帆;劉躍敏;范波;王珂;曾佳;;三相電壓型PWM整流器模型預(yù)測(cè)直接功率控制[J];計(jì)算機(jī)測(cè)量與控制;2016年09期

2 張帆;劉躍敏;范波;王珂;曾佳;;基于虛擬磁鏈三相電壓型脈寬調(diào)制整流器模型預(yù)測(cè)直接功率控制[J];電機(jī)與控制應(yīng)用;2016年09期

3 張帆;劉躍敏;范波;王珂;曾佳;徐翔;;基于模型預(yù)測(cè)的三相PWM整流器直接功率控制[J];電機(jī)與控制應(yīng)用;2016年07期

4 黃守道;黃自翔;黃科元;姬小豪;;基于虛擬磁鏈定向的模型預(yù)測(cè)直接功率控制[J];電力電子技術(shù);2016年04期

5 宋文勝;鄧知先;;單相PWM整流器定頻模型預(yù)測(cè)功率控制算法[J];電機(jī)與控制學(xué)報(bào);2016年04期

6 鄭宏;王哲禹;黃俊;張?jiān)?;新型PWM整流器預(yù)測(cè)直接功率控制研究[J];電氣傳動(dòng);2016年03期

7 朱鵬程;黃文新;;PWM整流器無(wú)電網(wǎng)電壓傳感器直接功率控制[J];電力電子技術(shù);2016年02期

8 宋文斌;王輝;張瀟;張明麗;屈樂(lè)宏;;改進(jìn)型電壓型PWM整流器預(yù)測(cè)直接功率控制[J];控制工程;2016年02期

9 姚緒梁;王旭;馬赫;;三相電壓型PWM整流器雙開(kāi)關(guān)表直接功率控制策略研究[J];電機(jī)與控制學(xué)報(bào);2015年10期

10 姜艷姝;遇言;趙懷明;;基于模型預(yù)測(cè)控制的PWM整流器直接功率控制[J];電氣傳動(dòng);2015年07期

相關(guān)博士學(xué)位論文 前1條

1 張興;PWM整流器及其控制策略的研究[D];合肥工業(yè)大學(xué);2003年

相關(guān)碩士學(xué)位論文 前1條

1 趙甜甜;三相電壓型PWM整流器的直接功率控制策略研究[D];山東大學(xué);2012年

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本文編號(hào)：2015689