鼠籠式三相感應(yīng)電機轉(zhuǎn)子斷條、斷環(huán)在線故障檢測研究與仿真分析.pdf

1、山東大學(xué)碩士學(xué)位論文鼠籠式三相感應(yīng)電機轉(zhuǎn)子斷條、斷環(huán)在線故障檢測研究與仿真分析姓名：趙仁德申請學(xué)位級別：碩士專業(yè)：電機與電器指導(dǎo)教師：李光友2001.11.15山東大掌碩士學(xué)位論文“j用直接劉電流采樣信號進行FFT的方法(JJ【I矩形窗)進行故障特征信號的提取，不利于判斷閩值的選定，容易造成誤判和漏判，因此必須進行改進。在深入分析了各種改進方法的基礎(chǔ)上，本文給出了適合于本課題信號提取的改進方法：采用Hamming窗抑制旁瓣泄漏，用根據(jù)F

2、T的公式用二：分法或黃金分割法在主瓣內(nèi)搜尋譜峰值以減少柵欄效應(yīng)引起的誤差，實驗結(jié)果驗證了該方法的有效性。關(guān)鍵詞：感應(yīng)電機故障滲斷計算機仿真信號處理頻譜分析AbstractsSquirrelcageinductionmotorsareacriticalcomponentofmanyindustrialprocessesItiSimportanttOmaintainthemhealthyandsafeThebreakageofbarsand

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4、shedanobject—orientedsimulationmodel0fthreephrasesquirrelcageinductionmotorswhichhavebrokenbarsorendringsThemodelhasbeenprogrammedwiththeClanguageTheprogrammhasbeentestedbytheexperimentresultsWiththehelpofitwecaneasilyan

5、alyzetheeffectoftheassymetryrotorandalotofUSfulresultshavebeengainedOnthebasisofaseriesofreasonableassumptions，thereasonwhytheharmonicsof(12b)／occurinthestatorcurrentwhenrotorbarsorendringsarebrokenisexplained，andtherela

6、tionshipbetweentheamplitudeof(I2s)fcomponentsinstatorcurrentandthedegreeoftherotorcagefaultisgainedBasedonthetheoryanalysis，athresholdisofferedtodiagnosetherotorcagefaultItsvalidityisprovedbytheresultsofexperimentTherema

7、nyquestionswhenwetrytOtaketheusefulsignaloutofthestatorcurrentusingFFTdirectlyManyimprovedmethodshavebeenanalysedAnewimprovedapproachisdevelopedinthepapertomeettheneedoftheproblemKeyWords：inductionmotorfaultdetectioncomp