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  本文關鍵詞：水平軸風力發(fā)電機組傳動系統(tǒng)的動力學模型建模方法研究　出處：《蘭州理工大學》2012年碩士論文　論文類型：學位論文

  更多相關文章： 傳動系統(tǒng) 拉格朗日能量法 集中參數(shù) 有限元 模態(tài)分析

【摘要】：傳動系統(tǒng)作為風力發(fā)電機組的動力傳遞裝置，是風力機的一個重要組成部件，直接關系著風力發(fā)電機組的整體性能。國內外正專門組織力量對傳動系統(tǒng)的設計、制造等各個環(huán)節(jié)進行攻關研究。國內外傳動系統(tǒng)的研究主要針對齒輪箱內部零部件的耦合動力學研究。對傳動系統(tǒng)的動態(tài)分析理論及方法進行深入研究，建立系統(tǒng)的總體精確動力學模型，才能更好的掌握傳動系統(tǒng)的動態(tài)特性，提高整體傳動系統(tǒng)的性能。 本論文以雙饋變速恒頻風力發(fā)電機組兩種傳動鏈為研究對象，建立了兩種支承結構形式的風力機傳動系統(tǒng)模型并對其進行了系統(tǒng)的動力學分析。本文的主要工作內容和研究結論如下： 1)分析風力機傳動系統(tǒng)的結構形式，簡單對比幾種傳動鏈形式優(yōu)缺點。重點分析了雙饋變速恒頻風力發(fā)電機組的三點懸掛和四點懸掛傳動系統(tǒng)因軸承個數(shù)及分布不同而引起整個傳動系統(tǒng)的激勵的變化。結果分析得到三點懸掛式靜態(tài)無較大集中力，但載荷對齒輪箱行星機構沖擊較大；四點懸掛式受力集中，載荷主要對前兩個軸承沖擊較大。 2）推導拉格朗日方程的原理。把軸系集中參數(shù)化、有限元化后簡化為梁單元，用拉格朗日能量法推導梁單元的微分方程，應用于軸系的傳動系統(tǒng)建模分析。推導出風力機齒輪箱行星架各構件之間的相對位移關系，最后把微分代數(shù)方程推導為純微分方程，便于動力學方程的求解。 3）利用牛頓第二定律建立行星傳動系統(tǒng)的動力學方程。推導行星傳動系統(tǒng)各個齒輪直接的位移關系，建立廣義坐標與局部坐標的關系。為拉格朗日能量動力學模型和牛頓第二定律動力學模型提供理論基礎，考慮系統(tǒng)的橫向振動和系統(tǒng)扭轉振動，根據(jù)牛頓第二定律建立行星傳動系統(tǒng)的動力學方程，，得到并分析系統(tǒng)的固有頻率和相應的振動模式。 4）應用拉格朗日方程、彈性動力學分析法及多體動力學等理論，利用集中參數(shù)法和有限元法相結合的方法，建立兩種傳動鏈的動力學模型。首次提出用單元法推導局部坐標的相對的關系，為三點懸掛與四點懸掛傳動系統(tǒng)局部坐標轉化為廣義坐標提供理論依據(jù)。在建模過程中，首次考慮軸承變形、數(shù)目和支承位置的變化對整個傳動系統(tǒng)固有特性的影響。分析主軸軸承數(shù)目的變化引起的行星架受力、變形和傳動系統(tǒng)的固有頻率的變化。 5)在拉格朗日原理分析整個傳動鏈的動力學的基礎上，用有限元方法分析和對比兩種傳動系統(tǒng)主軸的結構受力變形和前十階模態(tài)。用mass21單元對調心軸承進行約束和載荷的施加，分析和對比了兩種傳動軸對整個傳動系統(tǒng)動力特性的影響。分析結果和第四章的整機固有特性對比分析可以看出，三點支承式主軸受力與變形比四點支承大，三點支承式主軸對齒輪箱行星架軸承要求較高。四點支承式主軸模態(tài)變形比三點支承式主軸大。
[Abstract]:The transmission system as the power transmission device of wind power generator, is an important component of the wind turbine, directly related to the overall performance of the wind turbine at home and abroad. It specially organized forces to design the transmission system and the research on all aspects of manufacturing. The research at home and abroad system mainly for internal parts of gear box research on coupling dynamics. The dynamic analysis theory and method for the transmission system of in-depth research, the overall accurate dynamics model is established and the dynamic characteristics of the transmission system can grasp better, improve the overall performance of the transmission system.
This paper takes two transmission chains of doubly fed variable speed constant frequency wind turbine as the research object, and establishes two models of wind turbine transmission system with support structure, and carries out a systematic dynamic analysis. The main contents and conclusions of this paper are as follows.
1) analysis of structure of the wind turbine transmission system, a simple comparison of several transmission chains. Focus on the analysis of the advantages and disadvantages of three doubly fed VSCF wind turbine suspension and four point suspension transmission system due to the number and distribution of different bearing caused by changes in the transmission system of motivation. The results of the analysis obtained three point suspension no static large centralized power, but a larger load impact on the gear box planetary mechanism; four suspension force concentrated mainly on the first two load bearing a greater impact.
2) principle of Lagrange's equations. The shafting parametric finite element, after simplified beam element, differential equations of beam elements with the Lagrange energy method, modeling and analysis of transmission system used in shafting. The relative displacement of the relation between the wind turbine gearboxplanet carrier component, the differential algebraic equations derivation of pure differential equations, the convenience of solving dynamic equations.
3) by kinetic equation established Newton's second law of planetary transmission system. The direct displacement relationship of each gear planetary transmission system is, establish the relationship between the generalized coordinates and local coordinates. Provide a theoretical basis for the Lagrange energy dynamics model and dynamic model of Newton's second law, lateral vibration and torsional vibration of the system, according to the dynamic equation of Newton the second law of planetary transmission system, and analysis of the natural frequencies and corresponding vibration modes.
4) the application of Lagrange equation, the elastic dynamic analysis method and multi-body dynamics theory, using the method of lumped parameter method and finite element method combining the dynamic model established two kinds of transmission chain. First proposed relative element method is local coordinate, three point suspension and four point suspension transmission system theory on the basis of local coordinate transformation for the generalized coordinates. In the modeling process, first consider the bearing deformation, changes in the number and position of the supporting effect on the inherent characteristics of the whole transmission system. Analysis of spindle bearings caused by the change of the number of planetary gear force, deformation and change of natural frequency of transmission system.
5) based on the principle analysis of the dynamics of Lagrange drive chain on the structure with the finite element method to analyze and compare the two kinds of transmission spindle deformation and the first ten modes are applied. The constraint and load by mass21 unit on the heart of the bearing, analyzes and compares the influence of dynamic characteristics of the entire transmission system two a drive shaft. The comparative analysis of the inherent characteristics of the analysis results and the fourth chapter can be seen, the three point type spindle bearing force and deformation is supported by four points, three points higher. Type spindle bearing of gear box planetary gear bearing four supporting spindle modal deformation than three bearing spindle.

【學位授予單位】：蘭州理工大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TM315;TH113

【參考文獻】

相關期刊論文 前10條

1 黃小華;李德源;;風力機葉片動力特性測試分析方法研究[J];長江大學學報(自科版)理工卷;2007年02期

2 趙榮珍;呂鋼;;大型水平軸式風力機的國內外研究狀況分析[J];風機技術;2009年01期

3 何婧;何玉林;金鑫;劉樺;;失速型風力發(fā)電機系統(tǒng)振動仿真分析[J];重慶大學學報(自然科學版);2007年05期

4 秦大同;古西國;王建宏;劉建國;;兆瓦級風力機齒輪傳動系統(tǒng)動力學分析與優(yōu)化[J];重慶大學學報;2009年04期

5 張仲柱;王會社;趙曉路;徐建中;;水平軸風力機葉片氣動性能研究[J];工程熱物理學報;2007年05期

6 李仁年;李銀然;王秀勇;繞帥波;;風力機翼型的氣動模型及數(shù)值計算[J];蘭州理工大學學報;2010年03期

7 李仁年;司小冬;;一種水平軸風力機尾流模型及其計算方法[J];蘭州理工大學學報;2012年01期

8 張鎖懷;張文禮;張青雷;;基于Adams的MW級風力發(fā)電機組動力學建模[J];華北電力大學學報(自然科學版);2009年04期

9 丁習坤;孫文磊;林茂峰;;750KW風力發(fā)電機組傳動系統(tǒng)動力學仿真分析[J];機械設計與制造;2010年07期

10 秦大同;邢子坤;王建宏;;基于動力學和可靠性的風力發(fā)電齒輪傳動系統(tǒng)參數(shù)優(yōu)化設計[J];機械工程學報;2008年07期

相關博士學位論文 前1條

1 王建宏;風力發(fā)電機的柔性多體動力學研究[D];重慶大學;2009年

相關碩士學位論文 前6條

1 張晨晨;兆瓦級風力發(fā)電機組的動力學分析[D];沈陽工業(yè)大學;2007年

2 柯偉;風力發(fā)電機組傳動系統(tǒng)性能研究[D];華北電力大學（北京）;2008年

3 古西國;兆瓦級風力發(fā)電機齒輪傳動系統(tǒng)耦合振動分析及優(yōu)化設計[D];重慶大學;2008年

4 呂鋼;基于有限元法的水平軸風力機塔架動態(tài)響應與優(yōu)化問題研究[D];蘭州理工大學;2009年

5 林茂鋒;風力發(fā)電機組傳動系統(tǒng)動力學分析[D];新疆大學;2009年

6 張巖;大型風電機組齒輪箱動力學特性仿真與分析[D];華北電力大學（北京）;2010年

本文編號：1381937