【摘要】：隨著傳統(tǒng)能源的日益枯竭和傳統(tǒng)能源帶來(lái)的環(huán)境問(wèn)題日益嚴(yán)峻,風(fēng)能作為一種綠色可再生能源受到了廣泛的重視。風(fēng)力發(fā)電機(jī)組工作于高空架設(shè)狀態(tài),維修困難。齒輪傳動(dòng)增速箱是風(fēng)力發(fā)電系統(tǒng)的核心關(guān)鍵部件之一,因此對(duì)其可靠性有較高的要求。因此,研究在真實(shí)載荷條件下風(fēng)力發(fā)電機(jī)的可靠性具有重要意義,本文在研究風(fēng)力發(fā)電機(jī)齒輪傳動(dòng)系統(tǒng)的動(dòng)態(tài)特性的基礎(chǔ)上對(duì)其可靠性進(jìn)行研究。 本文的1.5MW風(fēng)力發(fā)電機(jī)齒輪傳動(dòng)系統(tǒng)采用一級(jí)行星傳動(dòng)加兩級(jí)平行軸斜齒輪傳動(dòng)的結(jié)構(gòu)形式,研究其在時(shí)變風(fēng)載荷下的動(dòng)力學(xué)特性,并對(duì)其可靠性進(jìn)行研究。 論文的主要研究工作包括: ①建立基于兩參數(shù)威布爾分布的隨機(jī)風(fēng)速模型,使其更真實(shí)的反應(yīng)系統(tǒng)的外部激勵(lì)特征,并能模擬出與實(shí)際相符的風(fēng)速。 ②采用集中質(zhì)量法建立了風(fēng)電傳動(dòng)系統(tǒng)的動(dòng)力學(xué)模型,同時(shí)考慮系統(tǒng)的時(shí)變嚙合剛度、時(shí)變嚙合誤差和阻尼影響。 ③求得系統(tǒng)動(dòng)態(tài)響應(yīng),包括各齒輪的振動(dòng)位移、振動(dòng)速度,各齒輪副的動(dòng)態(tài)嚙合力以及軸傳遞的動(dòng)態(tài)扭矩,并對(duì)響應(yīng)進(jìn)行頻域分析。通過(guò)對(duì)比不同的激勵(lì)響應(yīng),得出動(dòng)力學(xué)響應(yīng)特性的變化規(guī)律。 ④根據(jù)動(dòng)力學(xué)分析得出的結(jié)果,建立齒輪傳動(dòng)系統(tǒng)的模糊可靠性評(píng)估模型以及整個(gè)齒輪箱的評(píng)估模型,對(duì)風(fēng)電傳動(dòng)系統(tǒng)進(jìn)行可靠性分析。 本文所做的研究工作,為在變風(fēng)載下兆瓦級(jí)風(fēng)力發(fā)電機(jī)齒輪傳動(dòng)系統(tǒng)的工程設(shè)計(jì)提供了一定的理論參考依據(jù),為工程應(yīng)用奠定了基礎(chǔ)。
[Abstract]:With the depletion of traditional energy and the increasingly serious environmental problems brought by traditional energy, wind energy as a kind of green renewable energy has received extensive attention. The wind turbine set up at high altitude is difficult to maintain. Gear gearbox is one of the key components of wind power system, so its reliability is very important. Therefore, it is of great significance to study the reliability of wind turbine under real load. In this paper, the reliability of wind turbine gear transmission system is studied on the basis of studying its dynamic characteristics. In this paper, the gear transmission system of 1.5MW wind turbine adopts the structure form of the first stage planetary transmission and two-stage parallel axis helical gear transmission. The dynamic characteristics of the gear transmission system under time-varying wind load are studied and its reliability is studied. The main work of this paper is as follows: 1 the stochastic wind speed model based on two-parameter Weibull distribution is established to make the external excitation characteristics of the response system more realistic. The dynamic model of the wind power transmission system is established by using the lumped mass method, and the time-varying meshing stiffness of the system is taken into account. The dynamic response of the system is obtained, including the vibration displacement, vibration velocity, dynamic meshing force of each gear pair and the dynamic torque transmitted by the shaft, and the response is analyzed in frequency domain. According to the results of dynamic analysis, the fuzzy reliability evaluation model of gear transmission system and the evaluation model of the whole gearbox are established. The reliability of wind power transmission system is analyzed. The research work in this paper provides a theoretical basis for the engineering design of the gear-drive system of megawatt wind turbine under variable wind load and lays a foundation for engineering application.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH132.41

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前5條

1 張壯飛;風(fēng)力發(fā)電機(jī)齒輪傳動(dòng)系統(tǒng)變載荷動(dòng)力學(xué)特性研究[D];重慶大學(xué);2012年

2 王海軍;柔性銷軸風(fēng)電行星齒輪傳動(dòng)強(qiáng)度研究[D];重慶大學(xué);2012年

3 楊洋;大功率風(fēng)電增速器性能評(píng)價(jià)研究[D];大連理工大學(xué);2013年

4 呂程;大功率風(fēng)電增速器動(dòng)態(tài)特性分析與優(yōu)化設(shè)計(jì)[D];大連理工大學(xué);2013年

5 方俊元;風(fēng)力發(fā)電機(jī)組齒輪箱強(qiáng)度可靠性優(yōu)化研究[D];華北電力大學(xué);2013年

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本文編號(hào)：2210698