本文選題：永磁牽引電機(jī)　切入點(diǎn)：溫度場　出處：《哈爾濱理工大學(xué)》2015年碩士論文

【摘要】：隨著高速鐵路的迅速發(fā)展及高性能永磁材料的出現(xiàn)，永磁牽引電機(jī)在軌道交通領(lǐng)域中的研究與應(yīng)用日益廣泛。永磁牽引電機(jī)擁有高效率、高功率因數(shù)、體積小、噪聲低等傳統(tǒng)異步牽引電機(jī)所無法比擬的優(yōu)點(diǎn)，使得其在機(jī)車牽引中的應(yīng)用具有很好的發(fā)展前景。然而由于永磁牽引電機(jī)的體積小、功率密度高，電機(jī)的安裝空間又有限，如果電機(jī)內(nèi)的熱量不能及時(shí)散出，永磁牽引電機(jī)將會(huì)有失磁的風(fēng)險(xiǎn)。因此，對(duì)永磁同步牽引電機(jī)的溫度場分布進(jìn)行深入的研究顯得尤為重要。 本文以一臺(tái)600kW永磁同步牽引電機(jī)為例，基于流體力學(xué)和傳熱學(xué)理論，并結(jié)合電機(jī)實(shí)際通風(fēng)結(jié)構(gòu)，建立了流體場和溫度場耦合求解模型，，采用有限體積法對(duì)電機(jī)的流體、溫度耦合場進(jìn)行了仿真計(jì)算，得到了電機(jī)內(nèi)部的溫升分布，對(duì)電機(jī)定子鐵心、定子繞組、轉(zhuǎn)子鐵心及永磁體的溫升分布規(guī)律進(jìn)行了全面深入的分析，確定了電機(jī)內(nèi)的最高溫升位置，并將溫升計(jì)算結(jié)果與實(shí)測值進(jìn)行了比較，驗(yàn)證了計(jì)算結(jié)果的準(zhǔn)確性。在此基礎(chǔ)上，對(duì)影響電機(jī)溫升分布的敏感性因素進(jìn)行了分析，為永磁牽引電機(jī)的設(shè)計(jì)提供理論參考。為了進(jìn)一步降低電機(jī)的溫升，文中還對(duì)永磁牽引電機(jī)的通風(fēng)散熱結(jié)構(gòu)進(jìn)行了優(yōu)化設(shè)計(jì)，將不同方案下電機(jī)的流體場和溫度場進(jìn)行了仿真計(jì)算，并將在不同方案下得到的計(jì)算結(jié)果進(jìn)行了對(duì)比分析，以尋求最優(yōu)通風(fēng)散熱設(shè)計(jì)方案。
[Abstract]:With the rapid development of high speed railway and the appearance of high performance permanent magnet materials, the research and application of permanent magnet traction motor in the field of rail transit is becoming more and more extensive.Permanent magnet traction motor has many advantages, such as high efficiency, high power factor, small volume, low noise and so on.However, due to the small size, high power density and limited installation space of the permanent magnet traction motor, if the heat in the motor can not be dissipated in time, the permanent magnet traction motor will lose its magnetic field.Therefore, it is very important to study the temperature field distribution of permanent magnet synchronous traction motor (PMSM).Taking a 600kW permanent magnet synchronous traction motor as an example, based on the theory of fluid mechanics and heat transfer, and combining with the actual ventilation structure of the motor, a coupled solution model of fluid field and temperature field is established. The finite volume method is used to solve the fluid of the motor.The temperature coupling field is simulated and the temperature rise distribution inside the motor is obtained. The temperature rise distribution of the stator core, stator winding, rotor core and permanent magnet is analyzed thoroughly and deeply.The maximum temperature rise position in the motor is determined, and the accuracy of the calculated results is verified by comparing the calculated results with the measured values.On this basis, the sensitivity factors affecting the temperature rise distribution of the motor are analyzed, which provides a theoretical reference for the design of the permanent magnet traction motor.In order to further reduce the temperature rise of the motor, the ventilation and heat dissipation structure of the permanent magnet traction motor is optimized, and the fluid and temperature fields of the motor under different schemes are simulated and calculated.The results obtained under different schemes are compared and analyzed in order to find the optimal design scheme of ventilation and heat dissipation.
【學(xué)位授予單位】：哈爾濱理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM922.71

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本文編號(hào)：1713950