【摘要】：變壓器的體積和重量會(huì)隨著工作頻率的不斷提高而減小，但隨之損耗增加，由此溫升就成了不能忽略的問題，在設(shè)計(jì)變壓器的同時(shí)，用有限元軟件仿真其溫度分布，得到變壓器的熱點(diǎn)，對(duì)變壓器絕緣等級(jí)選擇和散熱有指導(dǎo)意義。 本文著重研究了用AP法設(shè)計(jì)高頻變壓器，分析了高頻變壓器的漏感和分布電容等參數(shù)，，理論推導(dǎo)了漏感和分布電容的計(jì)算公式，對(duì)磁芯損耗和繞組損耗進(jìn)行了研究，在理論推導(dǎo)和軟件仿真下，研究了集膚效應(yīng)和臨近效應(yīng)對(duì)繞組電流密度分布的影響，仿真得到了二維模型的漏磁場分布，以及高頻變壓器的總損耗，利用順序耦合法，把漏磁場分析結(jié)果作為溫度分析的載荷，仿真得到高頻變壓器的二維溫度分布，找到變壓器的熱點(diǎn)。 本文在變壓器的開路試驗(yàn)和短路試驗(yàn)的基礎(chǔ)上，擬合了空載損耗和短路損耗曲線，得到了額定條件下總的損耗值，并與仿真結(jié)果進(jìn)行了比較。研究了變壓器的冷卻技術(shù)，分析了減小變壓器溫升的方法。
[Abstract]:The volume and weight of the transformer will decrease with the increasing of working frequency, but the loss will increase, so the temperature rise becomes a problem that can not be ignored. While designing the transformer, the temperature distribution is simulated with finite element software. The hot spots of transformer are obtained, which is instructive to the selection of insulation grade and heat dissipation of transformers. In this paper, the design of high frequency transformer with AP method is studied, the parameters of leakage inductance and distributed capacitance of high frequency transformer are analyzed, the formula of leakage inductance and distributed capacitance is deduced theoretically, and the core loss and winding loss are studied. Based on theoretical derivation and software simulation, the effects of skin effect and proximity effect on the distribution of winding current density are studied. The leakage magnetic field distribution of the two-dimensional model and the total loss of high frequency transformer are obtained by simulation, and the sequential coupling method is used. The result of leakage magnetic field analysis is taken as the load of temperature analysis, and the two-dimensional temperature distribution of high frequency transformer is obtained by simulation, and the hot spot of transformer is found. On the basis of open circuit test and short circuit test of transformer, the curve of no-load loss and short-circuit loss is fitted, and the total loss value under rated condition is obtained, and the results are compared with the simulation results. The cooling technology of transformer is studied, and the method of reducing transformer temperature rise is analyzed.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM407

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 姬海寧,蘭中文,張懷武;高頻開關(guān)電源變壓器的設(shè)計(jì)方法[J];磁性材料及器件;2004年02期

2 李智華;羅恒廉;陳為;;繞組交叉換位對(duì)高頻變壓器參數(shù)的影響[J];磁性材料及器件;2006年04期

3 姬海寧;蘭中文;張懷武;張悅;;基于ANSYS的開關(guān)電源變壓器熱模擬研究[J];磁性材料及器件;2006年04期

4 李磊,陳道煉,張友軍,潘海朗,胡育文;雙極性移相控制高頻脈沖交流環(huán)節(jié)逆變器研究[J];電工技術(shù)學(xué)報(bào);2002年06期

5 李春旭,張學(xué)紅,李芳;高頻變壓器漏抗對(duì)IGBT逆變電源工作狀態(tài)的影響[J];電焊機(jī);2004年01期

6 王京梅,蘭中文,余忠,王豪才;高頻開關(guān)電源變壓器的優(yōu)化設(shè)計(jì)[J];電子科技大學(xué)學(xué)報(bào);2002年04期

7 蔡國偉;孔令國;潘超;王建元;楊德友;;基于頻變特性的變壓器諧波損耗分析[J];電網(wǎng)技術(shù);2011年11期

8 李隆鍵;劉洪濤;崔文智;;有內(nèi)熱源的液池與管內(nèi)流體的耦合傳熱[J];核動(dòng)力工程;2007年03期

9 陳庭勛;;開關(guān)電源高頻變壓器單向設(shè)計(jì)法[J];浙江海洋學(xué)院學(xué)報(bào)(自然科學(xué)版);2009年03期

10 馬奎興;有限元及軟件ANSYS簡介[J];水利科技與經(jīng)濟(jì);2004年03期

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