Analysis Of The Drag And Energy Conservation On Mid-low Speed Maglev Train

The traction computing of mid-low speed maglev train is the important part of the maglev railway system.The accuracy of the traction computing provides valuable reference to the circuit design and operation strategies.In traction computing,the accuracy of the drag formula directly impacts the results.Concerned with the engineering demand of the Beijing S1 line and Changsha maglev railway,the research is based on the target of energy conservation.Aiming at deducing drag formula and improving the strategy,this thesis mainly researches on three aspects,shown as follows:Firstly,the drag of eddy effects in the railway track are analyzed in suspension system of CMS-04 maglev train.The single winding model,single block with four windings model,multi blocks with different distance model and multi blocks with current feedback model were built,and the suspension force and the eddy current were calculated under different velocities and current.Based on the force simulated,the drag formula of the maglev train was deduced.Secondly,the CMS-04 maglev train model and the region were meshed to calculating the aerodynamic drag with or without horizontal wind,the drag formula were deduced by the data simulated.Thirdly,the abrasion between maglev train’s collector shoe and contact rail was analyzed briefly,thus,the fundamental drag force formula was deduced;based on the maglev traction computing software,the algorithm was improved and three different algorithm were used on the Changsha maglev line and Beijing S1 line,and the influences of the improved algorithm were evaluated.This research investigate the drag formula of mid-low maglev train filling the blank in related field of our country,the improved algorithm could help realizing the energy conservation.The finished researches are helpful to the accuracy of traction computing on Changsha maglev line and Beijing S1 line.