本文關(guān)鍵詞： 無刷雙饋風(fēng)力發(fā)電機(jī) 開繞組 共直流母線 直接功率控制 共模電壓抑制　出處：《沈陽工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：在人類追求快速發(fā)展經(jīng)濟(jì)的過程中,造成了全球性的污染和生態(tài)的破壞。風(fēng)能作為一種無污染、可持續(xù)發(fā)展的能源走入人們的視野,雙饋感應(yīng)發(fā)電機(jī)因其可以實(shí)現(xiàn)變速恒頻的發(fā)電,成為了風(fēng)力發(fā)電機(jī)的主要機(jī)型。無刷雙饋發(fā)電機(jī)繼承了雙饋感應(yīng)發(fā)電機(jī)的優(yōu)點(diǎn),還省去了滑環(huán)等結(jié)構(gòu),降低了故障率,尤其適用于海上風(fēng)力發(fā)電場合。本文以國家自然科學(xué)基金項(xiàng)目“復(fù)合轉(zhuǎn)子開繞組無刷雙饋風(fēng)力發(fā)電機(jī)及其直接功率控制策略”(項(xiàng)目批準(zhǔn)號(hào):51277124)為背景,以無刷雙饋風(fēng)力發(fā)電機(jī)為研究對(duì)象,提出了一種適用于該種發(fā)電機(jī)的開繞組拓補(bǔ)結(jié)構(gòu)及控制策略。主要研究內(nèi)容如下:(1)分析了無刷雙饋風(fēng)力發(fā)電機(jī)的工作原理、三種不同運(yùn)行方式及其在不同運(yùn)行方式下的功率流向關(guān)系;所研究的無刷雙饋風(fēng)力發(fā)電機(jī)的轉(zhuǎn)子采用一種具有較強(qiáng)耦合能力的新型混合轉(zhuǎn)子結(jié)構(gòu),定子的控制繞組設(shè)計(jì)成開繞組結(jié)構(gòu)。為了建立其等效電路,本文推導(dǎo)了無刷雙饋風(fēng)力發(fā)電機(jī)在MT旋轉(zhuǎn)坐標(biāo)系下的數(shù)學(xué)模型。(2)研究了瞬時(shí)功率理論以及直接功率控制原理,直接功率控制策略具有功率響應(yīng)速度快、計(jì)算簡單、對(duì)發(fā)電機(jī)參數(shù)依賴小等優(yōu)點(diǎn),特別適用于風(fēng)力發(fā)電場合;改進(jìn)傳統(tǒng)的直接功率控制策略,以便能夠適用于混合轉(zhuǎn)子無刷雙饋電機(jī)的特殊結(jié)構(gòu);分析了在開繞組結(jié)構(gòu)下,采用雙兩電平變流器所產(chǎn)生的空間電壓矢量。這些空間電壓矢量具有3種不同的幅值,所以本文將其歸類為長矢量、中矢量和短矢量,并總結(jié)出了每種空間電壓矢量在直接功率控制策略中的不同作用效果。(3)分析了在共直流母線開繞組結(jié)構(gòu)中,共模電壓和共模電流的產(chǎn)生機(jī)理及其危害;針對(duì)基于雙兩電平變流器的混合轉(zhuǎn)子開繞組無刷雙饋風(fēng)力發(fā)電系統(tǒng),提出了一種基于直接功率控制的共模電壓抑制控制策略,并采用MATLAB/Simulink軟件對(duì)所提出的控制方法進(jìn)行了仿真分析,結(jié)果表明這種控制方法可以大大提高了功率控制精度,并能有效抑制系統(tǒng)中的共模電壓。(4)以TI公司生產(chǎn)的TMS320F28335DSP芯片為控制核心,設(shè)計(jì)了一套基于兩臺(tái)四象限變流器的控制系統(tǒng);搭建了混合轉(zhuǎn)子共直流母線開繞組無刷雙饋風(fēng)力發(fā)電機(jī)(額定功率為23kW)的直接功率控制系統(tǒng)實(shí)驗(yàn)平臺(tái),并進(jìn)行了實(shí)驗(yàn)研究,驗(yàn)證了所提出基于直接功率控制的共模電壓抑制策略的有效性。
[Abstract]:In the process of human pursuit of rapid economic development, caused global pollution and ecological damage. Wind energy as a non-polluting, sustainable development of energy into the people's vision. The doubly-fed induction generator has become the main type of wind turbine because of its variable speed and constant frequency generation. The brushless doubly-fed generator inherits the advantages of doubly-fed induction generator and saves the structure of sliding ring and so on. Reduced the failure rate. It is especially suitable for offshore wind power generation. In this paper, the project of National Natural Science Foundation "Brushless Doubly-fed Wind Generator with compound rotor Open Winding and its Direct Power Control Strategy" (. Project approval number: 51277124). The brushless doubly-fed wind turbine is taken as the research object. This paper presents an open-winding extension structure and control strategy for the generator. The main research contents are as follows: 1) the working principle of the brushless doubly-fed wind turbine is analyzed. Three different operation modes and their power flow relationship under different operation modes; The rotor of the brushless doubly-fed wind turbine adopts a new hybrid rotor structure with strong coupling ability. The control winding of the stator is designed as an open-winding structure. In order to establish its equivalent circuit. In this paper, the mathematical model of brushless doubly-fed wind turbine in MT rotating coordinate system is derived. The instantaneous power theory and direct power control principle are studied. The direct power control strategy has fast power response speed. Simple calculation and little dependence on generator parameters, which is especially suitable for wind farm. The traditional direct power control strategy is improved so that it can be applied to the special structure of the hybrid rotor brushless doubly-fed machine. This paper analyzes the space voltage vectors which are generated by using double two level converters under open winding structure. These space voltage vectors have three different amplitudes, so this paper classifies them into long vector, medium vector and short vector. The different effects of each space voltage vector in direct power control strategy are summarized. The mechanism and harm of common-mode voltage and common-mode current in the open winding structure of common DC bus are analyzed. A common-mode voltage suppression control strategy based on direct power control is proposed for a hybrid rotor open-winding brushless doubly-fed wind power generation system based on two-level converter. The proposed control method is simulated and analyzed by MATLAB/Simulink software. The results show that this control method can greatly improve the accuracy of power control. A control system based on two four-quadrant converters is designed based on the TMS320F28335DSP chip produced by TI Company. An experimental platform of direct power control system for a hybrid rotor common DC bus open winding brushless doubly-fed wind turbine (rated power is 23kW) is built, and the experimental research is carried out. The effectiveness of the proposed common-mode voltage suppression strategy based on direct power control is verified.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM315

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭艷華;高躍;;模塊化多電平逆變器共模電壓研究[J];電氣傳動(dòng);2017年01期

2 程明;韓鵬;魏新遲;;無刷雙饋風(fēng)力發(fā)電機(jī)的設(shè)計(jì)、分析與控制[J];電工技術(shù)學(xué)報(bào);2016年19期

3 劉萬太;羅小麗;宋運(yùn)雄;;逆變器驅(qū)動(dòng)下感應(yīng)電機(jī)軸電壓的產(chǎn)生與預(yù)防[J];防爆電機(jī);2016年05期

4 張鳳閣;朱連成;金石;于思洋;;開繞組無刷雙饋風(fēng)力發(fā)電機(jī)最大功率點(diǎn)跟蹤直接轉(zhuǎn)矩模糊控制研究[J];電工技術(shù)學(xué)報(bào);2016年15期

5 金石;王中正;王代睿;朱連成;;基于功率誤差比較的開繞組無刷雙饋發(fā)電機(jī)直接功率控制[J];電工技術(shù)學(xué)報(bào);2016年07期

6 年珩;曾恒力;周義杰;;共直流母線開繞組永磁同步電機(jī)系統(tǒng)零序電流抑制策略[J];電工技術(shù)學(xué)報(bào);2015年20期

7 高寧;李睿;陳強(qiáng);蔡旭;;雙級(jí)式中頻隔離型儲(chǔ)能變流器的直流母線電壓優(yōu)化控制[J];中國電機(jī)工程學(xué)報(bào);2015年17期

8 年珩;周義杰;曾恒力;;開繞組永磁同步發(fā)電機(jī)的容錯(cuò)控制[J];電工技術(shù)學(xué)報(bào);2015年10期

9 周義杰;年珩;;變流器單邊可控下開繞組永磁同步發(fā)電機(jī)的控制技術(shù)[J];電工技術(shù)學(xué)報(bào);2015年10期

10 趙榮理;張愛玲;田慕琴;王昕;;一種無刷雙饋感應(yīng)電機(jī)無功功率的控制方法[J];微特電機(jī);2015年03期

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