本文關鍵詞： 深海推進電機 雙定子永磁無刷直流電機 電磁設計 有限元法 齒槽轉(zhuǎn)矩　出處：《沈陽工業(yè)大學》2017年碩士論文　論文類型：學位論文

【摘要】：深海推進電機作為水下推進設備的動力源,其技術發(fā)展直接影響著深�？碧介_發(fā)工作的上限。近年來,永磁無刷直流電機由于其高效率、高功率密度、運行可靠等優(yōu)點越來越多地被應用在水下推進裝置中。雙定子永磁無刷直流電機作為一種新興結構電機,具有過載能力強、轉(zhuǎn)子慣量小以及控制方式靈活多樣等優(yōu)點,在深海推進領域中有重大應用價值。本文首先分析了雙定子永磁無刷直流電機的基本結構及原理,通過對電機磁路結構、繞組連接方式的分析,給出了其等效磁路圖和兩相導通工作方式下的基本方程。其次,研究了雙定子電機的設計方法,針對深海電機體積小、重量輕的特點,提高電機設計轉(zhuǎn)速,采用帶減速器的結構設計方案。按照先設計一臺單定子電機,繼而在其基礎上進行雙定子電機設計的思想,基于等效磁路法,研究了主要尺寸的確定、電磁負荷的選取、定轉(zhuǎn)子以及永磁體的設計方法,著重分析了槽數(shù)和極數(shù)配合的選擇,通過路算得到了初步設計方案。然后在ANSYS Maxwell中建立雙定子永磁無刷直流電機的有限元模型,在瞬態(tài)場中對電機空載磁場以及負載運行性能進行仿真分析,得到轉(zhuǎn)矩、電流等相關性能曲線。同時,對不同繞組連接方式下電機的運行性能進行了分析,研究了不同參數(shù)變化對電機反電勢、轉(zhuǎn)矩波動、漏磁、效率等性能的影響,對電機相關參數(shù)進行了調(diào)整。最后,對電機的轉(zhuǎn)矩波動問題進行了分析,研究了減小其齒槽轉(zhuǎn)矩的方法,通過有限元仿真分析,得到了不同抑制措施下齒槽轉(zhuǎn)矩的變化規(guī)律,為提高電機穩(wěn)態(tài)運行性能提供了參考。研究結果表明,雙定子永磁無刷直流電機提高了空間材料利用率,具有更高的功率轉(zhuǎn)矩密度,不同的繞組連接方式使電機具有更寬廣的運行速度范圍,非常適合深海推進電機的特點,具有較好的應用前景。
[Abstract]:As the power source of underwater propulsion equipment, deep-sea propulsion motor technology development directly affects the upper limit of deep-sea exploration and development. In recent years, permanent magnet brushless DC motor has high efficiency and high power density. Double stator permanent magnet brushless DC motor, as a new structure motor, has strong overload capacity. The rotor inertia is small and the control mode is flexible, so it has great application value in the field of deep-sea propulsion. Firstly, this paper analyzes the basic structure and principle of double-stator permanent magnet brushless DC motor. Through the analysis of the magnetic circuit structure and winding connection mode of the motor, the equivalent magnetic circuit diagram and the basic equation under the two-phase conduction mode are given. Secondly, the design method of the double-stator motor is studied. Aiming at the small size and light weight of deep-sea motor, the speed of motor design is improved, and a single stator motor is designed according to the structural design scheme with reducer. Based on the method of equivalent magnetic circuit, the main dimensions, the selection of electromagnetic load, the design method of stator and rotor and permanent magnet are studied. The selection of slot number and pole number is analyzed emphatically, and the preliminary design scheme is obtained by road calculation. Then the finite element model of double stator permanent magnet brushless DC motor is established in ANSYS Maxwell. In the transient field simulation analysis of the motor no-load magnetic field and load operation performance obtained torque current and other related performance curves. At the same time the motor performance under different winding connection mode is analyzed. The effects of different parameters on the performance of motor, such as reverse EMF, torque ripple, magnetic flux leakage, efficiency and so on, are studied, and the motor parameters are adjusted. Finally, the torque ripple problem of motor is analyzed. The method of reducing the slotting torque of the motor is studied. Through the finite element simulation analysis, the variation law of the slotting torque under different suppression measures is obtained, which provides a reference for improving the steady-state operation performance of the motor. The double stator permanent magnet brushless DC motor improves the space material utilization ratio, has higher power torque density, and different winding connection mode makes the motor have a wider running speed range. It is very suitable for the characteristics of deep-sea propulsion motor and has a good application prospect.
【學位授予單位】：沈陽工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM33

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