本文選題：異步電機(jī) + 電磁力��； 參考：《沈陽工業(yè)大學(xué)》2017年碩士論文

【摘要】：異步電機(jī)在變頻器供電下,增加的諧波含量會加劇電機(jī)振動進(jìn)而增大振動噪聲,然而變頻器供電卻廣泛應(yīng)用于工業(yè)中。因此需要采取適當(dāng)?shù)拇胧﹣斫档彤惒诫姍C(jī)的電磁振動與噪聲。異步電機(jī)采用不同槽配合以及轉(zhuǎn)子斜槽時,在氣隙內(nèi)產(chǎn)生抑制諧波的磁場,降低異步電機(jī)電磁力的諧波含量,對異步電機(jī)電磁振動產(chǎn)生抑制作用。因此,本文主要研究不同槽參數(shù)下異步電機(jī)的電磁振動,主要分為以下3個方面:首先,采用解析計算方法計算不同轉(zhuǎn)子斜槽情況下的異步電機(jī)電磁力,推導(dǎo)出采用轉(zhuǎn)子斜槽時徑向電磁力解析計算表達(dá)式。利用Ansoft軟件搭建有限元仿真模型,計算分析了不同槽配合異步電機(jī)的電磁力,對不同槽配合下異步電機(jī)電磁力的頻譜進(jìn)行比較,得出不同槽配合對異步電機(jī)電磁力的影響。其次,對異步電機(jī)進(jìn)行模態(tài)計算,由于電機(jī)定子的徑向變形是引起電機(jī)振動的主要原因,因此在不考慮電機(jī)軸向振動(即軸向階次為0)的前提下進(jìn)行電機(jī)模態(tài)分析。以模態(tài)分析理論為基礎(chǔ),仿真計算出異步電機(jī)的振型及固有頻率,為下一步異步電機(jī)電磁振動的仿真分析奠定了基礎(chǔ)。最后,利用ANSYS軟件計算分析不同槽配合下異步電機(jī)電磁振動。把在瞬態(tài)磁場中計算得到的電磁力加載在異步電機(jī)定子齒部表面,仿真得到不同槽配合下異步電機(jī)的振動位移和振動加速度。通過分析結(jié)構(gòu)振動仿真結(jié)果,得出不同槽配合對異步電機(jī)振動的影響,并且對三相異步電機(jī)進(jìn)行了振動測試實驗,以驗證仿真結(jié)果的正確性。
[Abstract]:The increase of harmonic content in induction motor will aggravate the vibration of the motor and increase the vibration noise. However, the inverter power supply is widely used in industry. Therefore, appropriate measures should be taken to reduce the electromagnetic vibration and noise of asynchronous motor. When the induction motor adopts different slot matching and rotor slant slot, it produces the magnetic field in the air gap to suppress the harmonic, reduces the harmonic content of the electromagnetic force of the asynchronous motor, and inhibits the electromagnetic vibration of the asynchronous motor. Therefore, this paper mainly studies the electromagnetic vibration of asynchronous motor with different slot parameters, which is divided into the following three aspects: firstly, the electromagnetic force of asynchronous motor with different rotor slant slot is calculated by analytic calculation method. The analytical expression of radial electromagnetic force with rotor slot is derived. The finite element simulation model is set up by using Ansoft software. The electromagnetic force of asynchronous motor with different slots is calculated and analyzed. The frequency spectrum of electromagnetic force of asynchronous motor with different slot matching is compared, and the influence of different slot matching on the electromagnetic force of asynchronous motor is obtained. Secondly, modal analysis of induction motor is carried out, because the radial deformation of stator is the main cause of motor vibration, so the motor modal analysis is carried out without considering the axial vibration of motor (that is, axial order is 0). Based on the theory of modal analysis, the vibration mode and natural frequency of asynchronous motor are simulated and calculated, which lays a foundation for the simulation analysis of electromagnetic vibration of asynchronous motor in the next step. Finally, the electromagnetic vibration of asynchronous motor with different slots is calculated and analyzed by ANSYS software. The electromagnetic force calculated in the transient magnetic field is loaded on the stator tooth surface of the asynchronous motor, and the vibration displacement and acceleration of the asynchronous motor under different slot coordination are obtained by simulation. By analyzing the results of structural vibration simulation, the effect of different slot coordination on the vibration of induction motor is obtained, and the vibration test experiment of three-phase asynchronous motor is carried out to verify the correctness of the simulation results.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM343

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 謝穎;王嚴(yán);呂森;葛紅巖;劉海松;;小型異步電機(jī)模態(tài)計算與試驗分析[J];電工技術(shù)學(xué)報;2015年16期

2 唐慶華;張林;;采用斜槽降低三相異步電動機(jī)電磁噪聲[J];防爆電機(jī);2015年01期

3 馬琮淦;左曙光;孫慶;孟姝;;考慮時間諧波電流的永磁同步電機(jī)電磁噪聲階次特征分析[J];振動與沖擊;2014年15期

4 賀玉民;史建萍;崔偉;趙東芝;吳若欣;;槽配合對異步電機(jī)電磁噪聲的影響分析[J];電機(jī)與控制應(yīng)用;2014年04期

5 張維;黃堅;;綜合分析槽配合與定子振動特性降低電動機(jī)電磁噪聲[J];電機(jī)與控制應(yīng)用;2013年10期

6 張磊;高春俠;張加勝;溫旭輝;;具有凸極效應(yīng)的永磁同步電機(jī)電磁振動特性[J];電工技術(shù)學(xué)報;2012年11期

7 韓偉;賈啟芬;邱家俊;;異步電機(jī)定子的振動與模態(tài)分析[J];振動與沖擊;2012年17期

8 李文;趙慧敏;鄧武;;變頻器驅(qū)動異步電機(jī)振動頻譜特征分析[J];電機(jī)與控制學(xué)報;2012年08期

9 王荀;邱阿瑞;;籠型異步電動機(jī)徑向電磁力波的有限元計算[J];電工技術(shù)學(xué)報;2012年07期

10 霍向飛;李剛;李霞;;合適的槽配合降低變頻調(diào)速電動機(jī)電磁噪音[J];電機(jī)技術(shù);2012年02期

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本文編號：1848557