基于ANSYS的永磁调速器磁场研究

发布时间：2018-04-24 17:00

本文选题：永磁调速器 + 永磁体　；参考：《长安大学》2012年硕士论文

【摘要】：永磁调速器以磁力耦合技术为基础，利用导体转子在永磁转子所激发的磁场中做旋转运动，从而在两转子间的空气气隙处产生交变磁场，以使电机与负载实现无接触且高效率运转。作为一种新兴调速设备，永磁调速器以其卓越的技术优势被大量工程人员所熟知，并在越来越多的场合得到应用。目前对永磁调速器的研究主要体现在应用及节能效果方面，对于永磁调速器工作机理中所涉及的磁场分布问题却鲜有研究。本文从电磁场的理论出发，针对两种不同结构的永磁调速器磁场问题，结合不同结构的磁场工作机理，分别通过理论方法进行了磁场分析，并基于理论分析结果，，运用ANSYS软件中的电磁场分析模块对不同结构永磁调速器进行建模，求解出其工作磁场的分布及参数值，验证理论分析结果的正确性，为永磁调速器的磁场研究提供了理论依据。同时，利用ANSYS分析了不同结构参数对永磁调速器磁场的影响，为永磁调速器的优化设计提供了有力参考。最后，在前面分析结果的基础上提出了一种新型永磁调速器的结构，并对其磁场进行了简单分析，验证了此结构的合理性。通过对两种不同结构永磁调速器磁场的分析，得出了筒形永磁调速器的磁场分布明显优于圆盘式永磁调速器，在相同的结构参数下，根据磁场分析结果可以得出，筒形永磁调速器中工作磁场的强度更高，其永磁转子上所获得的输出扭矩更大，效率更高。其次，通过ANSYS对不同转速下的磁场分布进行了分析，结果表明：在相同的气隙厚度条件下，随着转速的提高，工作气隙处的磁场强度增大，从而拉动永磁转子的磁场力增大，使永磁调速器输出扭矩不断增大，效率也随之提高。同时，由不同结构参数下磁场的分析结果得到：永磁调速器结构中的气隙厚度与永磁体厚度对工作磁场的分布与强度影响最大。最后，对提出的新型永磁调速器结构做了磁场分析，与前两种永磁调速器的磁场分布相比，该新型结构设计合理，并且具有一定的优越性。
[Abstract]:The permanent magnet governor is based on the magneto-force coupling technique and uses the conductor rotor to rotate in the magnetic field excited by the permanent magnetic rotor, thus generating an alternating magnetic field at the air gap between the two rotors. In order to make the motor and load to achieve non-contact and high efficiency operation. As a new type of speed regulating equipment, permanent magnet governor is well known by a large number of engineers because of its outstanding technical advantages, and has been applied in more and more occasions. At present, the research of permanent magnet governor is mainly reflected in the application and energy saving effect, but there is little research on the magnetic field distribution involved in the working mechanism of the permanent magnet governor. In this paper, based on the theory of electromagnetic field, the magnetic field of two kinds of permanent magnet governor with different structures is analyzed by theoretical method, and the results are based on the results of theoretical analysis. The electromagnetic field analysis module in ANSYS software is used to model the permanent magnet governor with different structure, and the distribution and parameter value of its working magnetic field are solved. The correctness of the theoretical analysis results is verified, which provides a theoretical basis for the magnetic field research of the permanent magnet governor. At the same time, the influence of different structure parameters on the magnetic field of permanent magnet governor is analyzed by ANSYS, which provides a powerful reference for the optimization design of permanent magnetic governor. Finally, a new structure of permanent magnet governor is proposed based on the previous analysis results, and its magnetic field is simply analyzed, which verifies the rationality of the structure. By analyzing the magnetic field of two kinds of permanent magnet governor with different structure, it is concluded that the magnetic field distribution of the cylindrical permanent magnet governor is obviously superior to that of the disk permanent magnet governor. Under the same structure parameters, according to the result of magnetic field analysis, it can be concluded that, The working magnetic field of the cylindrical permanent magnet governor is higher, and the output torque of the permanent magnet rotor is higher and the efficiency is higher. Secondly, the magnetic field distribution at different rotational speeds is analyzed by ANSYS. The results show that the magnetic field intensity at the working air gap increases with the increase of the rotating speed under the same air gap thickness, thus the magnetic field force of the permanent magnet rotor increases. The output torque of the permanent magnet governor is increasing, and the efficiency is also improved. At the same time, from the results of magnetic field analysis under different structure parameters, it is concluded that the thickness of air gap and permanent magnet in the structure of permanent magnet governor have the greatest influence on the distribution and intensity of the working magnetic field. Finally, the magnetic field analysis of the structure of the new permanent magnet governor is made. Compared with the magnetic field distribution of the first two kinds of permanent magnetic speed governor, the new structure is reasonable in design and has certain advantages.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.46

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