新型永磁涡流调速器的特性研究

发布时间：2018-12-11 04:10

【摘要】：永磁涡流调速器是基于电磁感应原理的新型电机系统调速节能装置,具有高效节能、减小系统振动、可靠性高、可实现空载启动和过载保护、适应环境能力强等优点,已引起了许多国内外学者和高耗能企业的广泛关注。该技术的发展对提高电机系统的运行效率,促进我国节能减排政策的实施有深远意义。本文利用有限元仿真分析方法,对筒式永磁涡流调速器样机的磁场、涡流场和温度场的分布以及调速特性进行了研究,并对筒式永磁涡流调速器的结构参数进行了优化设计,为其实际研究开发、设计制造和工程应用提供参考。利用ANSYS12.1建立了筒式永磁涡流调速器样机的二维和三维有限元仿真模型,进行了电磁分析计算,得出了筒式永磁涡流调速器的磁场分布情况,并对其输出功率、转矩和轴向力随啮合面积和转差率的变化规律进行了深入研究。分析了筒式永磁涡流调速器的涡流分布情况和功率损耗与啮合面积和转差率的关系,并对筒式永磁涡流调速器三维模型进行了磁热耦合分析,得出了关键零部件的温度分布情况。通过筒式永磁涡流调速器样机实验系统,对筒式永磁涡流调速器在不同啮合面积和转差率下的运行情况进行了测量,并与有限元分析结果进行了对比,验证了利用有限元仿真计算方法研究筒式永磁涡流调速器特性的准确性,同时得出了筒式永磁涡流调速器实际的运行特性和节能效果。基于筒式永磁涡流调速器样机的结构,分析了导体环厚度、导体筒厚度、气隙厚度、永磁体占空比、极数、厚度、永磁轭铁厚度等主要尺寸参数以及材料对筒式永磁涡流调速器样机特性的影响规律,并根据分析结果对25kW筒式永磁涡流调速器进行了优化设计。优化后的永磁调速器材料成本减少了20.1%,质量减少了27.2%,其带载能力也高于初始结构。
[Abstract]:Permanent magnet eddy current governor is a new type of speed regulating and energy saving device of motor system based on electromagnetic induction principle. It has the advantages of high efficiency and energy saving, reducing system vibration, high reliability, realizing no-load startup and overload protection, and strong ability to adapt to the environment, etc. It has attracted the attention of many scholars and energy-consuming enterprises at home and abroad. The development of this technology is of great significance to improve the operation efficiency of motor system and promote the implementation of energy saving and emission reduction policy in China. In this paper, the distribution of magnetic field, eddy current field and temperature field and speed regulation characteristics of cylinder permanent magnet eddy current governor are studied by using finite element simulation analysis method, and the structural parameters of cylindrical permanent magnet eddy current governor are optimized. It provides reference for actual research and development, design and manufacture and engineering application. The 2D and 3D finite element simulation models of cylinder permanent magnet eddy current governor are established by using ANSYS12.1. The electromagnetic analysis and calculation are carried out, and the magnetic field distribution of the cylinder permanent magnet eddy current governor is obtained, and the output power of the cylinder permanent magnet eddy current governor is obtained. The variation of torque and axial force with meshing area and slip rate is studied. The relationship between eddy current distribution, power loss, meshing area and slip rate of cylindrical permanent magnet eddy current governor is analyzed. The magneto-thermal coupling analysis of three-dimensional model of cylindrical permanent magnet eddy current governor is carried out. The temperature distribution of key parts is obtained. Through the experimental system of cylinder permanent magnet eddy current governor, the operation of cylinder permanent magnet eddy current governor under different meshing area and slip rate is measured and compared with the result of finite element analysis. The accuracy of studying the characteristics of cylindrical permanent magnet eddy current governor by using finite element simulation calculation method is verified. Meanwhile, the actual operation characteristics and energy saving effect of drum permanent magnet eddy current governor are obtained. Based on the structure of cylinder permanent magnet eddy current governor, the thickness of conductor ring, conductor cylinder, air gap, duty cycle of permanent magnet, number of poles, thickness of permanent magnet are analyzed. The influence of the main dimension parameters such as the thickness of the yoke iron and the material on the characteristics of the cylinder type permanent magnet eddy current governor is studied. According to the analysis results, the optimization design of the 25kW cylinder type permanent magnet eddy current governor is carried out. The material cost and mass of the optimized permanent magnet governor are reduced by 20.1g and 27.2g respectively, and its load capacity is higher than that of the original structure.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM32

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