發(fā)布時(shí)間：2018-07-13 08:47

【摘要】：針對(duì)兆瓦級(jí)高速永磁電機(jī)的損耗密度大、散熱困難、永磁體在高溫情況下易發(fā)生不可逆退磁的問題,提出了一種徑向與軸向混合的⊥型通風(fēng)系統(tǒng),通過流體仿真軟件Fluent建立了該種通風(fēng)系統(tǒng)的3D流體場(chǎng)計(jì)算模型,并詳細(xì)分析了通風(fēng)系統(tǒng)內(nèi)的流體分布;同時(shí)針對(duì)高速電機(jī)轉(zhuǎn)子表面線速度高(一般可達(dá)200 m/s)、轉(zhuǎn)子表面的風(fēng)摩耗較大且計(jì)算復(fù)雜的問題,基于所建立的3D流體場(chǎng)模型和解析法,對(duì)兆瓦級(jí)高速永磁電機(jī)的轉(zhuǎn)子轉(zhuǎn)速、轉(zhuǎn)子表面粗糙度及通風(fēng)量、風(fēng)道幾何參數(shù)、氣隙大小對(duì)轉(zhuǎn)子表面風(fēng)摩耗的影響進(jìn)行了研究計(jì)算,并總結(jié)了相應(yīng)的規(guī)律。分析結(jié)果表明,所設(shè)計(jì)的混合⊥型通風(fēng)系統(tǒng)具有較好的湍流特性和散熱特性,轉(zhuǎn)子轉(zhuǎn)速和氣隙大小是影響風(fēng)摩耗的主要因素。
[Abstract]:Aiming at the problems of high loss density and difficult heat dissipation of megawatt high speed permanent magnet motor and the irreversible demagnetization of permanent magnet at high temperature, a radial and axial mixing ventilation system is proposed. The 3D fluid field calculation model of the ventilation system is established by the fluid simulation software fluent, and the fluid distribution in the ventilation system is analyzed in detail. At the same time, aiming at the problem of high linear speed on the rotor surface of high-speed motor (generally up to 200 m / s), the wind friction on the rotor surface is large and the calculation is complicated, based on the 3D fluid field model and analytical method, the rotor speed of the megawatt high speed permanent magnet motor is studied. The effects of rotor surface roughness and ventilation volume, air duct geometry parameters and air gap size on wind friction on rotor surface are studied and calculated, and the corresponding rules are summarized. The results of analysis show that the designed hybrid 螕 type ventilation system has better turbulence and heat dissipation characteristics, and rotor speed and air gap size are the main factors affecting wind friction.
【作者單位】： 沈陽(yáng)工業(yè)大學(xué)電氣工程學(xué)院;沈陽(yáng)工程學(xué)院機(jī)械學(xué)院;貝爾法斯特女王大學(xué)電氣工程系;
【基金】：長(zhǎng)江學(xué)者和創(chuàng)新團(tuán)隊(duì)發(fā)展計(jì)劃資助項(xiàng)目(IRT1072) 國(guó)家自然科學(xué)基金(51207094) 遼寧省高校創(chuàng)新團(tuán)隊(duì)支持計(jì)劃資助項(xiàng)目(LT2011003)
【分類號(hào)】：TM351

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本文編號(hào)：2118818