盘式永磁调速器在离心负载下的调速性能

doi:10.3901/JME.2019.14.225

摘要/Abstract

摘要： 对盘式永磁调速器建立3D瞬态涡流场数值模型，研究永磁调速器在离心负载下的调速性能以及导体盘材料和厚度等因素对调速性能的影响机理。研究结果表明，永磁调速器驱动离心负载时，输出转速和力矩随着气隙非线性变化。在调速过程中，存在输出转速与力矩随气隙变化剧烈的区域，导致调速精度降低。将导体盘材料由铜改成铝可以使调速过程更加平稳。存在一个铜导体盘厚度值，对应输出转速和力矩随气隙变化最为剧烈，调速性能最差。对于调速精度要求高的场所，选取的铜导体盘厚度应当远离这个值，或者选用铝导体盘，以获得更好的调速性能。

关键词: 调速性能, 离心负载, 永磁调速器

Abstract: A numerical model for 3D transient eddy field of the permanent coupler is established. The speed governing performance of the permanent magnetic coupler under the centrifugal load is investigated with this model. Effects of the material and thickness of the conductor disc on the speed governing performance are also studied. The results indicate that the output rotational speed and torque are nonlinear to air gap. The output rotational speed and torque alter sharply with the increase of the air gap in a rotational speed region, therefore reducing the speed governing precision. The substitution of the copper disc by an aluminum disc can improve the speed governing stability of the permanent magnetic coupler. There exists a value of the thickness of the copper disc, under which the output rotational speed and torque alter most intensely with the air gap, and therefore the speed governing performance is the worst. In the situation of demand on high precision of speed governing, the selected copper disc thickness should be away from this value or an aluminum disc should be chosen to achieve better speed governing performance.

Key words: centrifugal load, permanent magnetic coupler, speed governing performance

中图分类号:

TH113

吴明, 马玉顺, 匡俊, 黄晓兵. 盘式永磁调速器在离心负载下的调速性能[J]. 机械工程学报, 2019, 55(14): 225-232.

WU Ming, MA Yushun, KUANG Jun, HUANG Xiaobing. Speed Governing Performance of the Permanent Magnetic Coupler under Centrifugal Load[J]. Journal of Mechanical Engineering, 2019, 55(14): 225-232.

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