Enhancing Adhesion of Train Based on Electromagnetic Action

Abstract:

Aimed at the problem of insufficient adhesion between the wheel and the rail in the further development of high-speed train， an electromagnetic supercharging device was proposed based on the principle of electromagnetic action. An electromagnetic coil was used to generate the suction between the wheel and the rail to increase the adhesion of train. First， the basic structure model of electromagnetic supercharging device is established and the electromagnetic suction was calculated. Then， the effects of train speed， excitation current， winding coil circle number distribution and shape of coil， and coil height from rail surface on electromagnetic suction were simulated and analysed. The electromagnetic testing apparatus was developed to verify the exactness of the model and obtain the variation law of electromagnetic suction with speed， current， coil height from rail surface， and coil shape. The results show that the electromagnetic supercharging device can meet the requirements of increasing adhesion and degaussing wheels at different speed stages and can add reverse excitation current to the wheel for demagnetization when necessary. The research shows that the stable control of the electromagnetic suction of each wheel of the bogie can be achieved by reasonably adjusting the excitation current， which can effectively improve the stability and safety of train operation.