本文選題：永磁直線電機　切入點：游標電機　出處：《江蘇大學》2017年碩士論文　論文類型：學位論文

【摘要】：現(xiàn)階段,我國已經(jīng)進入了城市軌道交通建設高速發(fā)展的時代,未來城市軌道交通的發(fā)展方向之一就是建立綠色環(huán)保的城市軌道交通系統(tǒng)。永磁直線電機因其高功率密度和效率受到廣泛關(guān)注,其中,初級永磁型直線電機由于其繞組和永磁體都放置在初級短動子上,而長定子部分僅由齒槽結(jié)構(gòu)的導磁材料構(gòu)成,適用于長定子的軌道交通領域。本文以長定子永磁型游標直線電機為研究對象,提出一種模塊化容錯永磁游標直線電機。建立該電機的有限元仿真模型分析了其電磁特性;并且構(gòu)建電機熱仿真模型,分析了其熱特性;設計加工了實驗樣機,驗證了所提出電機性能,為進一步研究該型直線電機夯實了理論基礎。本文所研究的主要內(nèi)容如下:1.分析闡述了磁場調(diào)制型電機的結(jié)構(gòu)特點以及工作原理,主要包括磁齒輪電機及永磁游標電機。通過對氣隙磁導進行數(shù)學解析詳細分析了磁場調(diào)制的原理,并通過定子永磁型游標電機進行仿真驗證。2.針對現(xiàn)有的長定子永磁型游標直線電機的優(yōu)缺點,提出一種模塊化動子結(jié)構(gòu),實現(xiàn)了電機相鄰相之間的磁解耦,降低了相間互感,提升了電機的容錯性能。同時,采用新型永磁體陣列結(jié)構(gòu),降低了永磁體邊緣漏磁,增加了氣隙磁通密度,提高了永磁體的利用率,進一步提升了電機推力性能。3.分析研究了模塊化容錯永磁游標直線電機的模塊化動子結(jié)構(gòu)和新型永磁體陣列結(jié)構(gòu)。介紹該電機基本結(jié)構(gòu),并闡述其工作原理。利用有限元仿真軟件對電機的電磁特性進行分析,包括電機的永磁磁場特性、反電動勢特性、電感特性、定位力特性及推力特性。4.針對本文所提出的電機結(jié)構(gòu),對其進行結(jié)構(gòu)優(yōu)化設計,包括不同槽極配比,永磁體結(jié)構(gòu)參數(shù)優(yōu)化設計,動定子結(jié)構(gòu)參數(shù)優(yōu)化設計,最終確定了樣機加工的最佳結(jié)構(gòu),并且與現(xiàn)有電機結(jié)構(gòu)性能進行對比分析。5.基于ANSYS Workbench對電機進行溫度場有限元仿真計算,結(jié)合電機實際工作特性仿真計算得到電機各個部分的溫度分布,并分析研究電機的溫度特性。
[Abstract]:At this stage, China has entered the era of rapid development of urban rail transit construction. One of the development directions of urban rail transit in the future is to establish a green urban rail transit system. The permanent magnet linear motor (PMLM) has attracted wide attention because of its high power density and efficiency. Since the winding and permanent magnet of the primary permanent magnet linear motor are placed on the primary short actuator, the long stator part is only composed of the magnetic conductivity material of the tooth slot structure. This paper presents a modularized fault-tolerant permanent magnet Vernier linear motor based on permanent magnet Vernier linear motor with long stator. The finite element simulation model of this motor is established to analyze its electromagnetic characteristics. The thermal simulation model of the motor is constructed, and its thermal characteristics are analyzed, and the experimental prototype is designed and processed to verify the performance of the proposed motor. In order to further study the theoretical foundation of this type of linear motor, the main contents of this paper are as follows: 1. The structure characteristics and working principle of the magnetic field modulated motor are analyzed and expounded. It mainly includes magnetic gear motor and permanent magnet Vernier motor. The principle of magnetic field modulation is analyzed in detail through mathematical analysis of air gap magnetic conductance. According to the advantages and disadvantages of the existing long-stator permanent magnet Vernier linear motor, a modularized moving substructure is proposed, which realizes the magnetic decoupling between the adjacent phases of the motor and reduces the mutual inductance between phases. The fault tolerant performance of the motor is improved. At the same time, the new permanent magnet array structure is adopted, which reduces the flux leakage at the edge of the permanent magnet, increases the air gap flux density, and improves the utilization ratio of the permanent magnet. Furthermore, the thrust performance of the motor is improved. 3. The modularized moving substructure and the new permanent magnet array structure of the modularized fault-tolerant permanent magnet Vernier linear motor are analyzed and studied. The basic structure of the motor is introduced. The electromagnetic characteristics of the motor are analyzed by using the finite element simulation software, including the permanent magnet magnetic field characteristics of the motor, the characteristics of the back EMF, the inductance characteristics, According to the motor structure proposed in this paper, the structure optimization design is carried out, including the optimum design of structure parameters of permanent magnet, the optimum design of structure parameters of permanent magnet, the optimum design of structure parameters of moving stator, the optimum design of structure of permanent magnet, the optimum design of structure of permanent magnet, and the optimum design of structure of motor. Finally, the optimal structure of the prototype machining is determined, and compared with the existing motor structure. 5. The temperature field of the motor is simulated by finite element method based on ANSYS Workbench. The temperature distribution of each part of the motor is calculated by simulation combined with the actual working characteristics of the motor, and the temperature characteristics of the motor are analyzed and studied.
【學位授予單位】：江蘇大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM359.4

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