Speed Governing Performance of the Permanent Magnetic Coupler under Centrifugal Load

doi:10.3901/JME.2019.14.225

Abstract

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

CLC Number:

TH113

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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