自励式双凸极构造电涡流液冷缓速器研究

项目名称： 自励式双凸极构造电涡流液冷缓速器研究

项目编号： No.51277005

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 电工技术

项目作者： 李德胜

作者单位： 北京工业大学

项目金额： 80万元

中文摘要： 针对液力缓速器工艺复杂、价格高在国内难以大规模应用，以及传统风冷式电涡流缓速器制动力矩热衰退严重、易烧线圈且耗电多的缺点，在多年研究基础上，首次提出一种自励式双凸极构造电涡流液冷缓速器完整解决方案。该新型缓速器颠覆了传统电涡流缓速器的构造，其内含水道的定子代替毂式缓速器的转子，转子则为H型构造，但接近定子的部分为齿状凸极。它的励磁线圈只有一个，置于缓速器内腹且不旋转，励磁则由置于缓速器内部的三相永磁发电机提供电流。该缓速器构造简单且能够高效冷却，故工作时本体温度低，制动力矩热衰退大幅度减小，也不需电瓶供电。本项目拟从三个方面对该新型缓速器进行基础性研究：一是深入研究其磁路分布、励磁效率，并对其凸极数及形状等参数进行优化设计；二是对磁热耦合传热模型进行深化研究；三是给出其性能评价指标，并探讨与整车匹配控制等问题。该研究有望为我国大客车缓速器的升级，尤其是大货车缓速器的大规模推广提供新途径。

中文关键词： 缓速器；自励式；数值分析；多场耦合；

英文摘要： Because the vehicle hydraulic retarder is expensive and its processing technique is complicated, its large-scale applications are difficult in China. Moreover the eddy current retarder is subject to severe decay of braking torque as temperature is increasing, easy burnout of excitation coils and high consumption of electric power. According to our progress in vehicle retarder for many years, we firstly present the self-excited double salient poles liquid cooling eddy current retarder at home and abroad. It totally changes the magnetic circuit structure of the eddy current retarder. The new type retarder consists of a stator with internal cooling channel that replaces the rotator of the eddy current retarder, and a rotator characterized with H-shape structure that the part near the stator is salient pole like gear. Unlike the eddy current retarder, the new type retarder only has one non-rotating excitation coil that is located within the retarder and is excited by the current from the internal three-phase permanent magnet generator. The new type retarder results in a significant improvement in structure and cooling, which greatly decreases the decaying of braking torque as heat is accumulating and eliminates the consumption of electric power from vehicle battery. This project intends to study on this new type ret

英文关键词： retarder；self-excited；numerical simulation；multi-physics coupling；