發(fā)布時間：2018-02-26 11:09

  本文關(guān)鍵詞： 潛油電機 電機設(shè)計 MATLAB電磁計算程序 電磁場有限元仿真 溫度場仿真　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】：隨著我國石油開采的進行,潛油螺桿泵采油系統(tǒng)應(yīng)用越來越多。潛油螺桿泵采油系統(tǒng)在開采稠油,高含氣油,高含沙油等油井時具有其他采油設(shè)備無可比擬的優(yōu)勢。潛油電機作為潛油螺桿泵采油系統(tǒng)的動力裝置,對潛油螺桿泵的高效穩(wěn)定運行至關(guān)重要。傳統(tǒng)潛油電機一般轉(zhuǎn)速較高,需要加減速器才能來驅(qū)動潛油螺桿泵工作,這就降低了采油系統(tǒng)的效率和穩(wěn)定性。針對這種情況,研究開發(fā)低轉(zhuǎn)速的潛油電機就非常有必要。本文首先介紹了潛油螺桿泵驅(qū)動電機的結(jié)構(gòu)特點,提出設(shè)計一臺16極潛油永磁同步電機樣機。根據(jù)電機的設(shè)計要求,初步確定了電機的主要尺寸,定子槽數(shù),槽型大小,繞組排列和永磁體尺寸大小;針對切向式勵磁方式的漏磁情況,設(shè)計了空氣隔磁結(jié)構(gòu);為減小電機齒槽轉(zhuǎn)矩,設(shè)計了不均勻氣隙磁路結(jié)構(gòu)。為驗證所設(shè)計電機的工作性能,基于解析法用MATLAB語言編寫了電機的電磁計算程序,并對空載漏磁系數(shù)的計算進行了詳細分析,選出了合適的隔磁橋?qū)挾�。作為對�?又利用Maxwell仿真軟件,對電機的空載和負載時的電磁場進行了仿真分析。空載時,對比分析了均勻氣隙結(jié)構(gòu)和不均勻氣隙結(jié)構(gòu)時電機的空載反電動勢,空載氣隙磁密和齒槽轉(zhuǎn)矩,并選出了合適的不均勻氣隙的尺寸設(shè)計。負載時,分析了所設(shè)計電機在不同負載下的各項工作性能。針對潛油電機工作環(huán)境密閉,散熱困難的問題,本文對所設(shè)計的電機進行了溫度場有限元仿真分析。對90℃油井溫度時電機的各部分損耗進行了計算,通過流體力學(xué)知識確定了電機穩(wěn)態(tài)運行時各表面的等效散熱系數(shù),建立了一個齒距范圍的三維仿真模型,對電機的溫度場進行了仿真計算。通過以上仿真計算,證明了所設(shè)計電機的合理性,能夠適應(yīng)潛油螺桿泵電機的工作環(huán)境要求。
[Abstract]:With the development of oil production in China, the application of submersible screw pump system is more and more. The oil recovery system of submersible screw pump is producing heavy oil with high gas content. Oil wells with high sand content have unparalleled advantages over other oil recovery equipment. As a power device of oil recovery system of submersible screw pump, submersible motor is very important to the efficient and stable operation of submersible screw pump. A reducer is needed to drive the submersible screw pump, which reduces the efficiency and stability of the oil recovery system. It is necessary to study and develop submersible motor with low rotational speed. This paper first introduces the structural characteristics of submersible screw pump driven motor, and puts forward the design of a 16-pole submersible permanent magnet synchronous motor prototype. The main dimensions of the motor, stator slot number, slot size, winding arrangement and permanent magnet size are preliminarily determined. The air magnetic insulation structure is designed for the tangential excitation mode. The non-uniform air-gap magnetic circuit is designed. In order to verify the working performance of the designed motor, the electromagnetic calculation program of the motor is compiled with MATLAB language based on analytic method, and the calculation of no-load flux leakage coefficient is analyzed in detail. The suitable width of magnetic isolation bridge is selected. By using Maxwell simulation software, the electromagnetic field of the motor under no load and load is simulated and analyzed. In this paper, the no-load back EMF, air-gap magnetic density and slot torque of the motor with uniform air gap structure and non-uniform air gap structure are compared and analyzed, and the appropriate size design of non-uniform air gap is selected. The working performance of the designed motor under different loads is analyzed. Aiming at the problem that the working environment of the submersible motor is closed and the heat dissipation is difficult, In this paper, the temperature field of the motor is simulated by finite element method. The loss of every part of the motor is calculated at 90 鈩，

本文編號：1537764