基于雙PWM的雙饋風(fēng)力發(fā)電功率控制技術(shù)研究
本文選題:雙饋式感應(yīng)發(fā)電機(jī) 切入點(diǎn):雙PWM變流器 出處:《華南理工大學(xué)》2014年碩士論文 論文類型:學(xué)位論文
【摘要】:近年來,由于傳統(tǒng)能源的短缺以及日益嚴(yán)重的環(huán)境污染與氣候變暖問題,風(fēng)能的開發(fā)與利用越來越受到人們的重視,風(fēng)力發(fā)電的市場也在迅速擴(kuò)大。由于相對(duì)其他風(fēng)力發(fā)電方案具有顯著的優(yōu)勢,雙饋式風(fēng)力發(fā)電在風(fēng)力發(fā)電市場中占據(jù)了主要地位。雙饋式風(fēng)力發(fā)電方案以雙饋式感應(yīng)發(fā)電機(jī)和變流器為核心,由于發(fā)電機(jī)定子直接并入電網(wǎng),因此具有定子電流正弦程度高,發(fā)出的電能質(zhì)量好的特點(diǎn);變流器作為控制核心既可以控制發(fā)電機(jī)的有功功率輸出,實(shí)現(xiàn)最大風(fēng)能捕捉,還可以控制發(fā)電機(jī)的無功功率輸出,參與電網(wǎng)的無功功率調(diào)節(jié)。 本文圍繞雙饋發(fā)電機(jī)控制所需的雙PWM變流器進(jìn)行了深入研究,,雙PWM變流器由網(wǎng)側(cè)變流器與機(jī)側(cè)變流器兩部分構(gòu)成,本文針對(duì)這兩部分分別進(jìn)行了控制理論分析、仿真實(shí)驗(yàn)驗(yàn)證與實(shí)驗(yàn)樣機(jī)研制。首先對(duì)網(wǎng)側(cè)變流器的控制理論進(jìn)行了分析,對(duì)網(wǎng)側(cè)變流器的數(shù)學(xué)模型、坐標(biāo)變換方法、電流解耦方法、功率因數(shù)控制方法以及雙閉環(huán)控制策略進(jìn)行了數(shù)學(xué)推導(dǎo)與討論,并利用Matlab對(duì)網(wǎng)側(cè)變流器進(jìn)行了建模與仿真分析,檢驗(yàn)了網(wǎng)側(cè)變流器控制策略的可行性。接著,對(duì)機(jī)側(cè)變流器的控制理論進(jìn)行了分析,對(duì)雙饋發(fā)電機(jī)數(shù)學(xué)模型、功率特性進(jìn)行了數(shù)學(xué)推導(dǎo),介紹了基于定子電壓定向的雙饋發(fā)電機(jī)輸出功率解耦控制方法,構(gòu)建了機(jī)側(cè)變流器雙閉環(huán)的控制結(jié)構(gòu),討論了雙饋發(fā)電機(jī)空載狀態(tài)下的并網(wǎng)方法,利用Matlab對(duì)雙饋電機(jī)輸出功率控制系統(tǒng)進(jìn)行整體建模和仿真分析,整體模型的建立對(duì)后續(xù)的硬件實(shí)驗(yàn)平臺(tái)搭建與控制策略的軟件實(shí)現(xiàn)具有指導(dǎo)意義。 最后,針對(duì)雙PWM變流器,設(shè)計(jì)搭建了以IPM智能功率模塊為核心的主電路,和以DSP+CPLD為控制核心的控制電路,對(duì)系統(tǒng)主要硬件電路及軟件模塊進(jìn)行分析和介紹,并進(jìn)行了相關(guān)實(shí)驗(yàn)。
[Abstract]:In recent years, due to the shortage of traditional energy and the increasingly serious problems of environmental pollution and climate warming, more and more attention has been paid to the development and utilization of wind energy. The market for wind power is also expanding rapidly. Because of its significant advantages over other wind power schemes, The doubly-fed wind power generation scheme takes the doubly-fed induction generator and converter as the core, because the generator stator is directly integrated into the power network, so it has a high sinusoidal degree of stator current. As the control core, the converter can not only control the active power output of the generator, realize the gale capture, but also control the reactive power output of the generator, and participate in the reactive power regulation of the power grid. In this paper, the double PWM converter for doubly-fed generator control is deeply studied. The double PWM converter is composed of grid-side converter and machine-side converter. The control theory of the two parts is analyzed in this paper. First, the control theory of the grid-side converter is analyzed, and the mathematical model, coordinate transformation method, current decoupling method of the grid-side converter are analyzed. The power factor control method and the double closed loop control strategy are derived and discussed, and the modeling and simulation analysis of the grid-side converter is carried out by using Matlab. The feasibility of the control strategy of the grid-side converter is tested. The control theory of machine side converter is analyzed, the mathematical model and power characteristic of doubly-fed generator are derived, and the decoupling control method of output power of doubly-fed generator based on stator voltage orientation is introduced. In this paper, the control structure of double-closed loop is constructed, and the grid-connected method of doubly-fed generator under no-load condition is discussed. The output power control system of doubly-fed generator is modeled and simulated by Matlab. The establishment of the whole model has guiding significance for the subsequent hardware experiment platform and the software implementation of the control strategy. Finally, the main circuit with IPM intelligent power module as the core and the control circuit with DSP CPLD as the control core are designed and built for the dual PWM converter. The main hardware circuits and software modules of the system are analyzed and introduced. Related experiments were carried out.
【學(xué)位授予單位】:華南理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:TM315
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 馬幼捷;邵寶福;周雪松;康文廣;安小東;豐美麗;;智能功率模塊驅(qū)動(dòng)保護(hù)電路的研究與應(yīng)用[J];電測與儀表;2007年04期
2 趙建勇;王清靈;芮秀鳳;劉軍華;;三相電壓型PWM整流器的仿真與實(shí)驗(yàn)研究[J];電測與儀表;2011年09期
3 吳國祥;馬煒;陳國呈;俞俊杰;;雙饋?zhàn)兯俸泐l風(fēng)力發(fā)電空載并網(wǎng)控制策略[J];電工技術(shù)學(xué)報(bào);2007年07期
4 許善椿,王文舉;交流勵(lì)磁變速恒頻發(fā)電機(jī)原理-基本方程、等效電路、相量圖及功率圖[J];大電機(jī)技術(shù);1996年05期
5 李劍林;田聯(lián)房;王孝洪;汪安國;;PWM整流器負(fù)載電流前饋控制策略研究[J];電力電子技術(shù);2011年11期
6 曾聰;劉滌塵;;空間矢量脈寬調(diào)制技術(shù)的算法及其仿真研究[J];電力科學(xué)與工程;2009年08期
7 易一鵬;程遠(yuǎn)銀;;變速恒頻雙饋風(fēng)力發(fā)電功率控制技術(shù)研究[J];電氣傳動(dòng)自動(dòng)化;2011年03期
8 羅悅?cè)A;伍小杰;王晶鑫;;三相PWM整流器及其控制策略的現(xiàn)狀及展望[J];電氣傳動(dòng);2006年05期
9 陳英杰;田聯(lián)房;王孝洪;梁東明;賈宇輝;;基于直接電流控制的PWM整流器的研究[J];電氣傳動(dòng);2011年12期
10 顧軍;葉滿園;;雙饋風(fēng)力發(fā)電系統(tǒng)中有功無功解耦控制技術(shù)的仿真研究[J];防爆電機(jī);2006年04期
相關(guān)博士學(xué)位論文 前1條
1 張學(xué)廣;變速恒頻雙饋風(fēng)電機(jī)組并網(wǎng)控制策略研究[D];哈爾濱工業(yè)大學(xué);2010年
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