本文選題：低振動(dòng)低噪聲 + 永磁同步電機(jī)��； 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：機(jī)械化、自動(dòng)化的日益發(fā)展給人們工作生活制造便利的同時(shí),不可避免地帶來噪聲污染。如今,電機(jī)被普遍應(yīng)用于人們?nèi)粘Ｉ钜约肮ぷ魃a(chǎn)中。為解決電機(jī)噪聲污染問題,很多學(xué)者提出了各種電機(jī)減振降噪方案。在永磁同步電機(jī)(PMSM)噪聲抑制研究方面主要分為三類:模態(tài)研究、結(jié)構(gòu)優(yōu)化、控制方案優(yōu)化。這些方法都在一定程度上降低了電機(jī)噪聲,但仍未取得較理想的效果。本文研究的低振動(dòng)噪聲正弦繞組電機(jī)是一種新結(jié)構(gòu)的PMSM。該電機(jī)采用的正弦繞組、雙層轉(zhuǎn)子形式可以顯著降低電機(jī)電磁噪聲。本文對(duì)該電機(jī)結(jié)構(gòu)展開了深入的研究,主要研究工作包括以下幾個(gè)方面:首先對(duì)本文電機(jī)結(jié)構(gòu)進(jìn)行了方案論證。通過解析計(jì)算,建立了考慮齒槽存在時(shí)電機(jī)磁路結(jié)構(gòu)模型;對(duì)正弦繞組與普通繞組性能進(jìn)行了對(duì)比;以低振動(dòng)低噪聲為原則,分析了一種采用正弦繞組、雙層轉(zhuǎn)子結(jié)構(gòu)的低振動(dòng)噪聲PMSM的基本工作原理,并建立了電機(jī)二維有限元仿真模型。其次對(duì)電機(jī)磁場及徑向電磁力進(jìn)行了仿真計(jì)算。在空載和負(fù)載兩種工況下,對(duì)本文設(shè)計(jì)的PMSM進(jìn)行了有限元仿真,對(duì)氣隙磁場的正弦性進(jìn)行了驗(yàn)證,同時(shí)對(duì)徑向電磁力空間、時(shí)間諧波成分進(jìn)行了分析,總結(jié)了本文電機(jī)徑向電磁力波的分布規(guī)律。再次仿真計(jì)算了電機(jī)結(jié)構(gòu)模態(tài)。建立了雙層轉(zhuǎn)子系統(tǒng)、繞組與雙層轉(zhuǎn)子系統(tǒng)以及整機(jī)系統(tǒng)的有限元分析模型并對(duì)其進(jìn)行了模態(tài)仿真,提取了模態(tài)振型與對(duì)應(yīng)的模態(tài)頻率。對(duì)繞組與雙層轉(zhuǎn)子系統(tǒng)以及整機(jī)系統(tǒng)模態(tài)頻率進(jìn)行了對(duì)比,得到了剛度與質(zhì)量對(duì)模態(tài)頻率的影響規(guī)律,并探討了發(fā)生共振的可能性。最后分析計(jì)算了本文研究電機(jī)振動(dòng)性能。采用ANSYS仿真軟件對(duì)電機(jī)進(jìn)行瞬態(tài)動(dòng)力學(xué)分析,以Ansoft有限元仿真軟件中計(jì)算得到的電機(jī)徑向電磁力作為振動(dòng)激勵(lì)源,求取了電機(jī)表面徑向、切向振動(dòng)位移。并對(duì)徑向振動(dòng)位移進(jìn)行了頻譜分析。求得電機(jī)輻射聲壓級(jí),驗(yàn)證了本文所研究的新結(jié)構(gòu)PMSM在降低電機(jī)振動(dòng)與噪聲方面的有效性。
[Abstract]:With the increasing development of mechanization and automation, it is inevitable to bring noise pollution while making people's work and life convenient. Nowadays, motor is widely used in people's daily life and work production. In order to solve the problem of motor noise pollution, many scholars put forward a variety of vibration and noise reduction schemes. The research on PMSM noise suppression of PMSM is divided into three categories: modal study, structure optimization and control scheme optimization. These methods can reduce the motor noise to a certain extent, but still have not achieved satisfactory results. The low vibration sinusoidal winding motor studied in this paper is a new structure PMSM. The sinusoidal winding and double-layer rotor can significantly reduce the electromagnetic noise of the motor. In this paper, the structure of the motor is deeply studied, the main research work includes the following aspects: firstly, the scheme of the motor structure is demonstrated. Through analytical calculation, the magnetic circuit structure model of motor considering the existence of tooth slot is established, the performances of sinusoidal winding and ordinary winding are compared, and a kind of sinusoidal winding is analyzed based on the principle of low vibration and low noise. The basic principle of low vibration noise PMSM of double-layer rotor structure is presented, and the two-dimensional finite element simulation model of motor is established. Secondly, the magnetic field and radial electromagnetic force of the motor are simulated. The PMSM designed in this paper is simulated by finite element method under both no-load and load conditions, and the sinusoidal property of air-gap magnetic field is verified. At the same time, the radial electromagnetic force space and time harmonic components are analyzed. The distribution law of radial electromagnetic force wave of motor is summarized in this paper. The structural modes of the motor are simulated and calculated again. The finite element analysis model of the two-layer rotor system windings and double-layer rotor system and the whole machine system are established and the modal simulation is carried out. The modal modes and the corresponding modal frequencies are extracted. The effects of stiffness and mass on the modal frequency are obtained by comparing the modal frequencies of windings with two-layer rotor systems and the whole machine system. The possibility of resonance is discussed. Finally, the vibration performance of the motor is analyzed and calculated. The transient dynamic analysis of the motor is carried out by using the ANSYS simulation software. The radial electromagnetic force of the motor calculated in the Ansoft finite element simulation software is used as the vibration excitation source, and the radial and tangential vibration displacement of the motor surface is obtained. The frequency spectrum of radial vibration displacement is analyzed. The radiated sound pressure level of the motor is obtained, which verifies the effectiveness of the new structure, PMSM, in reducing the vibration and noise of the motor.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM341

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本文編號(hào)：1816077