Affiliations: [a] Affiliation School of Mechanical Engineering, Anhui University of Science and Technology, Huainan, Anhui, China
Correspondence:
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Corresponding author: Donghua Song, Affiliation School of Mechanical Engineering, Anhui University of Science and Technology, Huainan Anhui 232001, China. E-mail: song694@126.com. ORCID: https://orcid.org/0009-0001-6832-3194
Abstract: Aiming at the shortcomings of the traditional permanent magnet governor air gap speed regulation, a sleeve-type electromagnetic hybrid governor is proposed by controlling the current instead of adjusting the air gap, the structural characteristics and working principle of the speed regulation model are introduced, and the electromagnetic torque mathematical expression is derived based on the equivalent magnetic circuit method, and the key parameters affecting the transmission performance of the governor are obtained, and the simulation model of the sleeve electromagnetic hybrid governor is established by using the finite element analysis method to analyze the electromagnetic field change law in the governor under the transient field. The change curve of air gap magnetic inductance intensity under different currents was obtained, and the influence of speed difference under different currents on the output torque was revealed, and finally, an experimental platform was built for testing, and the maximum error of torque simulation and the test was obtained by analyzing the results to verify the accuracy of the simulation method, on this basis, two structural schemes were proposed to improve the amplitude of the torque regulation of the governor by the current, under the structure of scheme 1, the adjustment amplitude of the torque increased from 35% of the original structure to 96%, and the improvement effect was ideal. Its laws and conclusions can provide a reference for the further design and optimization of sleeve electromagnetic hybrid governor.
Keywords: Sleeve type electromagnetic hybrid governor, equivalent magnetic circuit method, transient fields, speed regulation characteristics
