新型串联磁路混合励磁直线涡流制动器特性分析  

Characteristic Analysis of a Novel Linear Eddy Current Brake with Serial Magnetic Circuit and Hybrid Excitation

作　　者：寇宝泉[1] 金银锡[1] 张赫[1] 张鲁[1] 张海林[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001

出　　处：《电工技术学报》2016年第15期62-72,共11页Transactions of China Electrotechnical Society

基　　金：国家科技重大专项(2012ZX04001-051)资助项目

摘　　要：提出了一种新型串联磁路混合励磁直线涡流制动器结构方案,其气隙磁场由初级励磁绕组和永磁体共同产生,因此具有气隙磁感应强度的幅值大、可调节和励磁损耗小等优点。本文首先详细介绍了串联磁路混合励磁直线涡流制动器的基本结构和工作原理。其次,根据等效磁路法和分层理论推导出了导体板中的涡流损耗与制动力的解析表达式,即建立了串联磁路混合励磁直线涡流制动器的解析模型。然后,通过二维有限元法验证了解析模型的准确性和有效性。最后,具体分析了混合励磁涡流制动器的电磁参数对力特性曲线的影响,为混合励磁涡流制动器的优化设计提供了理论依据。In this paper, a novel linear eddy current brake with serial magnetic circuitand hybrid excitationis presented. The air gap magnetic field is generated by the exciting windings and permanent magnets. Therefore the hybrid excitation eddy current brake has many advantages, such as large air gap flux density, controllability, and low excitation loss. Firstly, the structure and operation principle are introduced. Secondly,the expressions of the eddy loss and braking force are deduced using the equivalent magnetic circuit method and the layer theory approach, namely the analytical modelof the linear eddy current brake with serial magnetic circuit and hybrid excitation is set up. The validity of theanalytical model is confirmed using the two-dimensional finite element analysis. Finally,the relationship between the force characteristics and the design parameters of the hybrid excitation eddy current brake is analyzed to give theoretical basis for the optimization design of the hybrid excitation eddy current brake.

关 键 词：涡流制动器 混合励磁 串联磁路 解析模型 有限元分析 

分 类 号：TM359[电气工程—电机]