【摘要】：雙饋水輪發(fā)電機是適用于水頭變化較大場合的一種交流勵磁水力發(fā)電設備。近年來針對雙饋水輪發(fā)電機的研究側重于發(fā)電機控制系統(tǒng)的組成以及控制策略方面，沒有很好地對其內部的流體場進行充分地分析研究。因此基于電機學、流體力學的基本理論，協(xié)同分析發(fā)電機內流體流變特性，揭示發(fā)電機內不同參量之間的作用機理、影響關系及影響程度具有重要的理論價值和工程實際意義。基于此，本論文主要針對如下內容展開了相應的分析研究： 根據(jù)雙饋水輪發(fā)電機通風系統(tǒng)的結構特點，以發(fā)電機軸向單個徑向通風溝內的流體場作為研究對象，在相應的基本假設基礎上建立流體場研究模型，基于三維納威爾斯克托斯方程以及k ε等流體力學控制方程，采用有限體積元法對發(fā)電機不同結構區(qū)域內的流體流變特性進行數(shù)值研究，并對電機內風摩損耗進行計算，進而實現(xiàn)了電機內機械損耗的分離計算。通過與實驗數(shù)據(jù)的對比分析，驗證了其計算結果的準確性，并對電機內風摩損耗的敏感性因素進行了分析。 以雙饋水輪發(fā)電機周向1/12區(qū)域流體場作為研究對象，對影響發(fā)電機內部流體流動形態(tài)的相關因素，，例如發(fā)電機定轉子徑向通風槽鋼的結構、尺寸、型態(tài)、數(shù)量以及電機定轉子徑向通風槽鋼不同組合下的電機內流體場進行仿真分析，對相關因素對電機內流體場的影響關系及影響程度進行研究。
[Abstract]:Doubly-fed hydrogenerator is a kind of AC excitation hydrogenerator which is suitable for large head change. In recent years, the research of doubly-fed hydrogenerator focuses on the composition and control strategy of generator control system, and the fluid field inside the generator is not well analyzed. Therefore, based on the basic theory of electromechanics and hydrodynamics, it is of great theoretical value and engineering practical significance to analyze the rheological characteristics of fluid in the generator, and to reveal the mechanism, influence relation and influence degree of the different parameters in the generator. Based on this, this paper mainly focuses on the following contents: according to the structural characteristics of doubly-fed hydrogenerator ventilation system, the fluid field in the single radial ventilation ditch of the generator is taken as the research object. On the basis of the corresponding basic assumptions, the fluid field research model is established, which is based on the three-dimensional Navistos equation and k 蔚 isohydrodynamic control equation. The finite volume element method is used to study the rheological characteristics of the fluid in different structural regions of the generator, and the wind friction loss in the motor is calculated, and the separation calculation of the mechanical loss in the motor is realized. The accuracy of the calculation results is verified by comparing with the experimental data, and the sensitivity factors of the wind friction loss in the motor are analyzed. Taking the circumferential 1 / 12 region fluid field of doubly-fed hydrogenerator as the object of study, the related factors affecting the fluid flow pattern in the generator, such as the structure, size, shape of generator stator and rotor radial ventilation channel steel, are studied. The quantity and the fluid field of motor under different combination of stator and rotor radial ventilation channel steel were simulated and analyzed, and the influence of relevant factors on the fluid field in motor was studied.
【學位授予單位】：哈爾濱理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM312

【引證文獻】

相關期刊論文 前1條

1 呂永利;;影響水輪發(fā)電機運行的因素分析[J];科技創(chuàng)新與應用;2015年26期

相關碩士學位論文 前3條

1 鄧艷秋;雙饋水輪發(fā)電機傳熱特性研究[D];哈爾濱理工大學;2015年

2 趙楊;兆瓦級徑向通風發(fā)電機內流熱特性分析[D];哈爾濱理工大學;2015年

3 侯健;YKK系列中型高壓電機流體場與溫度場的計算分析[D];哈爾濱理工大學;2015年

本文編號：2250229