高轉(zhuǎn)矩密度永磁游標電機的電磁性能分析

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摘要
直接驅(qū)動技術(shù)由于其獨特的優(yōu)勢越來越受到工業(yè)發(fā)達國家的關(guān)注和重視，對于電力驅(qū)動行業(yè)來說，直接驅(qū)動技術(shù)即取消了傳統(tǒng)的機械變速機構(gòu)（如機械齒輪箱等），將電機與負載直接相聯(lián)，從而可以省去諸如機械疲勞、摩擦損耗以及震動噪音等諸多弊端。不同于其他的推進系統(tǒng)，高性能的電機驅(qū)動一直是直接驅(qū)動技術(shù)的核心所在，直接驅(qū)動技術(shù)的應(yīng)用領(lǐng)域十分廣泛。在傳動系統(tǒng)中應(yīng)用最為廣泛的電力傳動中，具有高轉(zhuǎn)矩密度性能的直驅(qū)電機一直是人們不懈追求的目標之一。隨后，一種新型高轉(zhuǎn)矩密度永磁電機——永磁游標電機得到重新關(guān)注并開展了相關(guān)的研究，它是基于“磁齒輪效應(yīng)”工作的，通過在定子結(jié)構(gòu)上引入調(diào)制齒 ，在定子電樞極數(shù)和槽數(shù)較少的情況下，繞組在氣隙內(nèi)產(chǎn)生特定的空間諧波與極數(shù)較大的永磁體相互作用，從而實現(xiàn)了低速高轉(zhuǎn)矩的性能。
本文提出了一種應(yīng)用于直接驅(qū)動系統(tǒng)的雙定子永磁游標電機，旨在保證永磁游標電機高轉(zhuǎn)矩密度的同時，充分發(fā)揮其高功率因數(shù)的的優(yōu)點。
論文主要研究成果包括以下幾個方面：
1.基于新型磁場調(diào)制式磁齒輪工作機理的解析式分析，開展PMV電機工作原理的研究，將二者工作原理用統(tǒng)一表達式進行解釋，并通過有限元仿真對兩者工作原理進行了驗證。
2.對該雙定子永磁游標電機的拓撲結(jié)構(gòu)及工作原理進行了詳細的介紹，證明了其特定的設(shè)計方法對性能的影響。
3.利用Ansoft/Maxwell軟件，建立有限元仿真模型，對該雙定子永磁游標電機進行有限元計算，再對其電磁特性進行研究。

關(guān)鍵詞：永磁電機，游標電機，磁齒輪，低速大轉(zhuǎn)矩，有限元

Electromagnetic Performance Analysis of High Torque Density Permanent-Magnet Vernier Machine
ABSTRACT
Direct drive technology got more and more attention by the industrial developed countries because of its unique advantages. For the electric power industry, direct drive technology which cancelled the traditional mechanical variable speed institutions (such as mechanical gear box, etc.), linking the motor and load directly, thus avoiding many disadvantages, such as mechanical fatigue, friction loss and vibration noise. Different from other propulsion systems, high performance motor drive has been the key of the direct drive technology, and the application of the direct drive technology field is very wide. Most widely used in the transmission system of electric drive, direct drive motor with high torque density performance has always been one of the relentless pursuits of goals. Then, a new type of permanent magnet motor with high torque density—permanent magnet vernier (PMV) gets to be paid attention to and carried out relevant research. It is based on "magnetic gear effect" work by introducing modulation on the stator tooth structure in the stator poles and the number of armature slots fewer cases , and the winding space harmonics generated with a specific number of poles of the permanent magnets greater interaction in the air gap, in order to achieve a high torque low speed performance.
This paper presents a direct drive system used in the double spokes arranged permanent magnet stators vernier (DSSA PMV) motor, which is designed to full play to the advantages of its high power factor, while being ensured a high torque density motor PMV.
Main research achievements include the following aspects:
1 Based on the principle of the novel field modulation magnetic gear, the principle of PMV machines has been studied. A unified expression of them is summarized and analyzed. Finite-element analysis (FEA) results are given to identify their principle.
2 The topology and working principle of the double-spoke arrangement of stator permanent magnet motor are introduced in detail to prove the impact of their specific design on performance.
3 Use Ansoft/Maxwell software, finite element simulation model, the double stator permanent magnet motor FEM vernier, and then study its electromagnetic characteristics.

Keywords: Permanent magnet motor, vernier motors, magnetic gear, low-speed high-torque, FEM.

目錄
摘要 II
ABSTRACT III
目錄 V
第一章 緒論 1
1.1 課題研究的背景 1
1.2 磁齒輪的研究現(xiàn)狀 3
1.3 低速大轉(zhuǎn)矩電機的研究現(xiàn)狀 7
1.4 永磁游標（PMV）電機的研究現(xiàn)狀及應(yīng)用前景 8
1.5 本課題研究內(nèi)容和論文結(jié)構(gòu) 10
1.5.1 課題研究主要內(nèi)容 10
1.5.2 論文結(jié)構(gòu) 11
第二章 游標電機的運行原理與數(shù)學模型 12
2.1 引言 12
2.2 PMV 電機 12
2.2.1 結(jié)構(gòu)特征 12
2.2.2 工作原理 13
2.2.3 氣隙磁場諧波分析的研究驗證 16
2.2.4 數(shù)學模型 18
第三章 雙定子永磁游標電機的拓撲結(jié)構(gòu)和工作原理 22
3.1 引言 22
3.2 雙定子永磁游標電機拓撲結(jié)構(gòu)及工作原理分析 22
3.3 本章小結(jié) 23
第四章 雙定子永磁游標電機仿真及性能分析 24
4.1 引言 24
4.2有限元仿真模型的建立 24
4.3 空載仿真結(jié)果 25
4.4 帶載仿真結(jié)果 27
4.5 電機性能分析 29
4.4 本章小結(jié) 30
第五章 總結(jié)與展望 31
5.1 全文總結(jié) 31
5.2 課題展望 31
致謝 33
參考文獻： 34