圆筒型直线磁齿轮性能分析

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摘要圆筒型直线磁齿轮依靠磁场作用传递推力,其输入与输出之间具有非接触的特点。直线磁齿轮较机械齿轮具有独特优势,如高力密度、高效率、低噪音、固有的过负荷保护、免维护等,使得它在电动汽车驱动、风力发电、海浪发电等领域广受关注。为获得圆筒型直线磁齿轮的特性及性能参数,本文利用有限元分析方法建立其瞬态分析模型：首先定义了直线磁齿轮的三种运动形式,分析了磁齿轮内、外两层气隙磁场,并对其推力特性进行研究;其次,对调磁环铁心片长度和径向厚度、永磁体厚度、气隙长度、电枢铁心厚度进行研究,以获得最大推力为目标,分析结构参数对直线磁齿轮推力传输能力的影响,得到直线磁齿轮的优化尺寸。最后在优化参数下进行模拟分析,结果表明优化后确实提高了直线磁齿轮的推力和力密度。

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	封宁君
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	胡敏强
	陈洁琳

关键词 ：直线磁齿轮, 气隙磁场, 磁场调制, 有限元法, 推力传输

Abstract：Tubular linear magnetic gears,whose input sides are physically isolated with the output sides, transmit force by magnetic field. Linear magnetic gears are becoming attractive in some niche areas such as electric vehicle propulsion, wind and wave power generation, since they take some distinct advantages over the mechanical gear, such as higher force density, higher efficiency, minimum acoustic noise, inherent overload protection, and freedom from maintenance,etc. The finite element models of transient analysis are established to obtain the characteristics and performances of the linear magnetic gear having the tubular topology. Firstly, three run ways of the magnetic gear are defined. The analytical curves of air gap flux density and force transmission capability of the linear magnetic gear are derived. Secondly, aiming to achieve the maximum thrust force affected by a series of structural parameters, such as the length and radial thickness of the ferromagnetic pole-pieces, the thickness of permanent magnet, air gap, and armature core, the optimal values of these structural parameters are obtained. Finally, the results show that these optimal structural parameters can improve force transmission ability and force density of the linear magnetic gear.

Key words： Linear magnetic gear air gap magnetic field field modulation finite element method(FEM) force transmission

收稿日期: 2014-08-20 出版日期: 2015-04-14

PACS:

TM315

基金资助:国家海洋能专项(GHME2011GD02),江苏省“六大高峰人才”(2014-HYZB-001)资助项目

作者简介: 封宁君女,1982年生,讲师,博士研究生,主要从事电气工程、新能源开发与利用方面的研究。余海涛男,1965年生,教授,博士生导师,研究领域为直线电机与应用研究,波浪发电新技术研究、超导电机研究、工程电磁场理论与应用研究。

引用本文:

封宁君,余海涛,胡敏强,陈洁琳. 圆筒型直线磁齿轮性能分析[J]. 电工技术学报, 2015, 30(2): 43-49. Feng Ningjun,Yu Haitao,Hu Minqiang,Chen Jielin. Performance Analysis of a Tubular Linear Magnetic Gear. Transactions of China Electrotechnical Society, 2015, 30(2): 43-49.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2015/V30/I2/43

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