Influence of Spatial Relative Position of U-Shaped Electromagnet and Rail on Electromagnetic Force
In order to further improve the accuracy of maglev vehicle system dynamics simulation,it is necessary to explore the electromagnetic force characteristics of electromagnet under different spatial degrees of freedom.Taking U-shaped electromagnet as the research object,considering the magnetization characteristics of the magnetic material,the 5DOFs of the suspension gap,lateral movement,rolling angle,nodding angle,yawing angle and coil currents were simulated based on the actual structure of electromagnet.Effects of DOF and coil currents on electromagnetic forces and moments were analyzed.The results show that influence of nodding angle and yawing angle on magnetic characteristics is small.The increase of rolling angle leads to the decrease of suspension force by 14%and the increase of guiding force by 167%.The electromagnet may produce unstable rolling moment under the combined action of rolling angle,nodding angle and shaking angle.Meanwhile,the influence of each degree of freedom on the electromagnetic force and torque is obviously coupled.After comprehensive analysis of the correlation between the six factors and electromagnetic force,except the current,clearance and the amount of traverse,the nodding angle has the most obvious influence on the suspension force,and the nodding angle has the most obvious influence on the steering force.
electromagnetic suspensionelectromagnetspatial relative positionfinite element analysis
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