發(fā)布時間：2018-03-12 19:31

  本文選題：電動汽車　切入點：雙層永磁體　出處：《江西理工大學》2017年碩士論文　論文類型：學位論文

【摘要】：隨著環(huán)境污染與能源危機逐漸凸顯,環(huán)保、零污染的電動汽車受到越來越多的人青睞,而實現(xiàn)高功率密度驅動電機是制約電動汽車行業(yè)發(fā)展的一大難題。雙層永磁體內置式永磁同步電機(Interior Permanent Magnet Synchronous Machine with Double-layer PMs,IPMSM-DPM)是一類利用轉子內置雙層永磁體而改善功率密度的新型電機。本文以電動汽車用IPMSM-DPM為研究目標,在掌握電機運行機理和轉子結構特征的基礎上,采用有限元方法對電機進行了優(yōu)化設計,校驗了最高轉速下的轉子機械強度,并對額定負載下的電機各部件溫度場分布進行了數(shù)值計算,加工制作了一臺試驗樣機,展開了樣機試驗以驗證理論分析的有效性。本文研究所取得成果對電動汽車用驅動電機的發(fā)展具有較為重要的理論依據(jù)和工程應用價值。本文主要研究工作及成果如下:1.電機結構優(yōu)化設計。詳細分析了內置式永磁同步電機結構特點;采用有限元軟件Ansoft Maxwell對轉子結構進行優(yōu)化,借助Toolkit對采用不同定子槽數(shù)的電機全工作區(qū)域下的鐵耗、銅耗、功率因數(shù)、轉矩脈動及效率進行了數(shù)值計算;并與單層永磁體轉子結構下的電機電感、輸出轉矩、損耗及效率進行了對比分析,獲得了電機優(yōu)化設計方案。2.轉子應力校驗。采用Solid Works建立了IPMSM-DPM轉子模型,導入ANSYSWorkbench中定義材料屬性,計算了最高轉速下轉子機械應力分布,驗證了轉子設計的合理性。3.磁熱耦合模型數(shù)值計算。采用Ansoft Maxwell軟件,對額定負載下IPMSM-DPM電樞繞組損耗、鐵耗進行計算,并以此為熱源,借助ANSYS Workbench仿真平臺,建立了電機三維磁熱耦合仿真模型,深入分析了電機溫度場分布規(guī)律。4.樣機制作與試驗研究。確定電機基本參數(shù),繪制加工圖紙,制作了一臺試驗樣機;搭建了樣機測試平臺,測試了樣機電阻、電感及感應電動勢基本特性,驗證了電機設計的合理性和理論分析的有效性。
[Abstract]:With the environmental pollution and energy crisis gradually prominent, environmental protection, zero pollution electric vehicles are more and more popular. The realization of high power density drive motor is a difficult problem that restricts the development of electric vehicle industry. Interior Permanent Magnet Synchronous Machine with Double-layer PMM-DPMM is a kind of IPMSM-DPMM, which uses the double layer permanent magnet built in the rotor to improve the power. This paper focuses on IPMSM-DPM for electric vehicles. On the basis of mastering the running mechanism of the motor and the characteristics of the rotor structure, the optimum design of the motor is carried out by using the finite element method, and the rotor mechanical strength at the highest rotational speed is checked. The temperature field distribution of each part of the motor under rated load is numerically calculated, and a test prototype is made. Prototype test was carried out to verify the validity of theoretical analysis. The results obtained in this paper have important theoretical basis and engineering application value for the development of electric vehicle drive motor. The results are as follows: 1. Optimum design of motor structure. Structure characteristics of built-in permanent magnet synchronous motor are analyzed in detail. The rotor structure is optimized by the finite element software Ansoft Maxwell. The iron loss, copper consumption, power factor, torque ripple and efficiency of the motor with different stator slots are numerically calculated by Toolkit. Compared with the single layer permanent magnet rotor structure, the motor inductance, output torque, loss and efficiency are compared and analyzed. The optimum design scheme of motor .2.The rotor stress check is obtained. The IPMSM-DPM rotor model is established by using Solid Works. The material properties are defined in ANSYSWorkbench, and the mechanical stress distribution of rotor at the highest speed is calculated, which verifies the rationality of rotor design .3. numerical calculation of magnetocaloric coupling model. The loss of IPMSM-DPM armature winding under rated load is calculated by Ansoft Maxwell software. Based on the calculation of iron consumption, and with the aid of ANSYS Workbench simulation platform, the three-dimensional magneto-thermal coupling simulation model of the motor is established, and the temperature field distribution law of the motor is deeply analyzed .4.The prototype is made and the experimental research is carried out, and the basic parameters of the motor are determined. A prototype was built, and the basic characteristics of resistance, inductance and induction electromotive force were tested. The rationality of motor design and the validity of theoretical analysis were verified.
【學位授予單位】：江西理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM341;U469.72

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本文編號：1602988