Simulation Research on Transmission Characteristics of Double Drum Excitation Governor
In order to study the electromagnetic field variation and speed regulation characteristics of sleeve vortex governor under the influence of different meshing areas and different design parameters,the self-developed sleeve permanent magnet eddy current governor is taken as the research object,its structure and principle are analyzed,the mathematical expression of electromagnetic torque is derived,and then the three-dimensional transient field of the governor is simulated and analyzed by the finite element method.The influence of the thickness of the copper rotor and the yoke cylinder and the speed difference on the output torque under different meshing areas is obtained.The speed regulation characteristics under different meshing areas are revealed.Finally,an experimental platform is built for experimental verification,and the results show that under the same meshing area,the output torque increases with the increase of copper rotor thickness and slippage,and decreases after increasing to the peak when the meshing area is 100％,the output torque can be increased by 45％by selecting a yoke iron cylinder with 2mm thickness.The output speed and torque decrease nonlinearly with the decrease of the meshing area during speed regulation.The conclusions can provide a reference for the further optimization design of sleeve vortex governors.
sleeve type permanent magnet eddy current governorfinite elementsmeshing areaspeed regulation characteristics
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