【摘要】：永磁渦流調(diào)速器是基于電磁感應(yīng)原理的新型電機系統(tǒng)調(diào)速節(jié)能裝置,具有高效節(jié)能、減小系統(tǒng)振動、可靠性高、可實現(xiàn)空載啟動和過載保護、適應(yīng)環(huán)境能力強等優(yōu)點,已引起了許多國內(nèi)外學者和高耗能企業(yè)的廣泛關(guān)注。該技術(shù)的發(fā)展對提高電機系統(tǒng)的運行效率,促進我國節(jié)能減排政策的實施有深遠意義。本文利用有限元仿真分析方法,對筒式永磁渦流調(diào)速器樣機的磁場、渦流場和溫度場的分布以及調(diào)速特性進行了研究,并對筒式永磁渦流調(diào)速器的結(jié)構(gòu)參數(shù)進行了優(yōu)化設(shè)計,為其實際研究開發(fā)、設(shè)計制造和工程應(yīng)用提供參考。利用ANSYS12.1建立了筒式永磁渦流調(diào)速器樣機的二維和三維有限元仿真模型,進行了電磁分析計算,得出了筒式永磁渦流調(diào)速器的磁場分布情況,并對其輸出功率、轉(zhuǎn)矩和軸向力隨嚙合面積和轉(zhuǎn)差率的變化規(guī)律進行了深入研究。分析了筒式永磁渦流調(diào)速器的渦流分布情況和功率損耗與嚙合面積和轉(zhuǎn)差率的關(guān)系,并對筒式永磁渦流調(diào)速器三維模型進行了磁熱耦合分析,得出了關(guān)鍵零部件的溫度分布情況。通過筒式永磁渦流調(diào)速器樣機實驗系統(tǒng),對筒式永磁渦流調(diào)速器在不同嚙合面積和轉(zhuǎn)差率下的運行情況進行了測量,并與有限元分析結(jié)果進行了對比,驗證了利用有限元仿真計算方法研究筒式永磁渦流調(diào)速器特性的準確性,同時得出了筒式永磁渦流調(diào)速器實際的運行特性和節(jié)能效果�；谕彩接来艤u流調(diào)速器樣機的結(jié)構(gòu),分析了導體環(huán)厚度、導體筒厚度、氣隙厚度、永磁體占空比、極數(shù)、厚度、永磁軛鐵厚度等主要尺寸參數(shù)以及材料對筒式永磁渦流調(diào)速器樣機特性的影響規(guī)律,并根據(jù)分析結(jié)果對25kW筒式永磁渦流調(diào)速器進行了優(yōu)化設(shè)計。優(yōu)化后的永磁調(diào)速器材料成本減少了20.1%,質(zhì)量減少了27.2%,其帶載能力也高于初始結(jié)構(gòu)。
[Abstract]:Permanent magnet eddy current governor is a new type of speed regulating and energy saving device of motor system based on electromagnetic induction principle. It has the advantages of high efficiency and energy saving, reducing system vibration, high reliability, realizing no-load startup and overload protection, and strong ability to adapt to the environment, etc. It has attracted the attention of many scholars and energy-consuming enterprises at home and abroad. The development of this technology is of great significance to improve the operation efficiency of motor system and promote the implementation of energy saving and emission reduction policy in China. In this paper, the distribution of magnetic field, eddy current field and temperature field and speed regulation characteristics of cylinder permanent magnet eddy current governor are studied by using finite element simulation analysis method, and the structural parameters of cylindrical permanent magnet eddy current governor are optimized. It provides reference for actual research and development, design and manufacture and engineering application. The 2D and 3D finite element simulation models of cylinder permanent magnet eddy current governor are established by using ANSYS12.1. The electromagnetic analysis and calculation are carried out, and the magnetic field distribution of the cylinder permanent magnet eddy current governor is obtained, and the output power of the cylinder permanent magnet eddy current governor is obtained. The variation of torque and axial force with meshing area and slip rate is studied. The relationship between eddy current distribution, power loss, meshing area and slip rate of cylindrical permanent magnet eddy current governor is analyzed. The magneto-thermal coupling analysis of three-dimensional model of cylindrical permanent magnet eddy current governor is carried out. The temperature distribution of key parts is obtained. Through the experimental system of cylinder permanent magnet eddy current governor, the operation of cylinder permanent magnet eddy current governor under different meshing area and slip rate is measured and compared with the result of finite element analysis. The accuracy of studying the characteristics of cylindrical permanent magnet eddy current governor by using finite element simulation calculation method is verified. Meanwhile, the actual operation characteristics and energy saving effect of drum permanent magnet eddy current governor are obtained. Based on the structure of cylinder permanent magnet eddy current governor, the thickness of conductor ring, conductor cylinder, air gap, duty cycle of permanent magnet, number of poles, thickness of permanent magnet are analyzed. The influence of the main dimension parameters such as the thickness of the yoke iron and the material on the characteristics of the cylinder type permanent magnet eddy current governor is studied. According to the analysis results, the optimization design of the 25kW cylinder type permanent magnet eddy current governor is carried out. The material cost and mass of the optimized permanent magnet governor are reduced by 20.1g and 27.2g respectively, and its load capacity is higher than that of the original structure.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM32

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本文編號：2371841