本文選題：電機 + 溫度場��； 參考：《合肥工業(yè)大學(xué)》2014年碩士論文

【摘要】：作為純電動汽車的關(guān)鍵零部件，車用永磁同步電機具有體積小、功率密度高等特點，其發(fā)熱和散熱問題是電機設(shè)計過程中的關(guān)鍵問題之一。本文以一臺永磁同步驅(qū)動電機為研究對象，以提高電機散熱效率為目的，借助FLUENT分析軟件，對電機進行了定子溫度場仿真和散熱優(yōu)化。 本文按照“發(fā)熱功率計算—熱仿真—散熱優(yōu)化—仿真驗證”的思路對電機進行散熱優(yōu)化研究。首先采用公式法和樣機實驗數(shù)據(jù)結(jié)合的方法求出了樣機主要發(fā)熱部件的發(fā)熱功率，然后對繞組、鐵芯等復(fù)雜部件進行了等效和簡化，建立了定子熱仿真的有限元模型，仿真計算得到了電機定子在額定工況下的穩(wěn)態(tài)和瞬態(tài)溫度分布。經(jīng)過與溫升實驗數(shù)據(jù)的對比，，驗證了仿真結(jié)果的準(zhǔn)確性和有效性。采用仿真方法對三種不同的散熱水道結(jié)構(gòu)、不同的冷卻水流量進行了研究，得出平行水道和較高的流量有利于散熱。為了進一步對平行水道的結(jié)構(gòu)進行優(yōu)化，建立了水道的熱阻數(shù)學(xué)模型，通過求解目標(biāo)函數(shù)最小值得到了最優(yōu)的水道高度和寬度。提出了一種增大電機水道散熱面積的方法，即在水道中設(shè)置三排散熱肋片，該方法將水道內(nèi)散熱面積提高了40.16%。最后對上述優(yōu)化結(jié)果進行了總結(jié)，得到了最終優(yōu)化方案，仿真結(jié)果顯示優(yōu)化后電機溫升降低了9.6%，優(yōu)化方案的有效性得到了驗證。
[Abstract]:As the key parts of pure electric vehicle, the permanent magnet synchronous motor (PMSM) used in vehicle has the characteristics of small size and high power density. The heating and heat dissipation is one of the key problems in the motor design process. In this paper, a permanent magnet synchronous drive motor (PMSM) is studied. In order to improve the efficiency of motor heat dissipation, the stator temperature field simulation and heat dissipation optimization are carried out with the help of FLUENT software. According to the idea of "heat power calculation-thermal simulation-heat dissipation optimization-simulation verification", this paper studies the heat dissipation optimization of motor. Firstly, the heating power of the main heating parts of the prototype is obtained by combining the formula method with the experimental data of the prototype, then the winding, iron core and other complex components are equivalent and simplified, and the finite element model of the stator thermal simulation is established. The steady and transient temperature distributions of the motor stator under rated working conditions are obtained by simulation. The accuracy and validity of the simulation results are verified by comparing with the experimental data of temperature rise. Three different cooling channel structures and different cooling water flow are studied by using simulation method. It is concluded that parallel waterways and high flow rate are beneficial to heat dissipation. In order to further optimize the structure of parallel waterways, a mathematical model of channel thermal resistance is established, and the optimal height and width of the channel are obtained by solving the minimum value of the objective function. In this paper, a method of increasing the radiating area of the motor waterway is presented, that is, three rows of radiating fins are arranged in the watercourse, and the heat dissipation area of the watercourse is increased by 40.16%. Finally, the optimization results are summarized and the final optimization scheme is obtained. The simulation results show that the temperature rise of the motor decreases by 9.6. the effectiveness of the optimization scheme is verified.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U469.72;TM303.3

【參考文獻】

相關(guān)期刊論文 前10條

1 H.Neudorfer ,張文茂;液體冷卻的三相交流牽引電動機[J];變流技術(shù)與電力牽引;2001年06期

2 靳廷船;李偉力;李守法;;感應(yīng)電機定子溫度場的數(shù)值計算[J];電機與控制學(xué)報;2006年05期

3 溫嘉斌;王國輝;;中型高壓異步電動機三維溫度場耦合計算與分析[J];電機與控制學(xué)報;2011年01期

4 丁樹業(yè);葛云中;陳衛(wèi)杰;徐殿國;苗立杰;;雙饋風(fēng)力發(fā)電機三維溫度場耦合計算與分析[J];電機與控制學(xué)報;2012年03期

5 韓偉;雷彬;李治源;李鶴;;電機類裝置冷卻方式綜述[J];裝備制造技術(shù);2009年09期

6 杜國華;房建成;劉西全;周銀鋒;;高速永磁無刷直流電機的熱分析[J];北京航空航天大學(xué)學(xué)報;2012年08期

7 路義萍;湯璐;劉涔鈺;韓家德;;某凸極同步電動機轉(zhuǎn)子三維溫度場計算與分析[J];電機與控制學(xué)報;2013年02期

8 韓力;焦曉艷;李景燦;王華;;無刷雙饋電機全域多工況溫度場的分析與計算[J];電機與控制學(xué)報;2013年05期

9 揭貴生;孫馳;汪光森;聶子玲;孟慶云;;大容量電力電子裝置中板式水冷散熱器的優(yōu)化設(shè)計[J];機械工程學(xué)報;2010年02期

10 郝曉紅;胡爭光;侯瓊;方瑛;李學(xué)康;彭倍;;基于多目標(biāo)遺傳算法的串聯(lián)通道水冷散熱器優(yōu)化設(shè)計[J];機械工程學(xué)報;2013年10期

本文編號：1831719