Abstract
Current collection quality is one of the limiting factors when increasing trains movement speed in the rail sector. With the movement speed growth, the impact forces on the current collector from the rolling stock and the aerodynamic influence increase, which leads to the spread in the contact pressure values, separation of the current collector head from the contact wire, contact arcing and excessive wear of the contact elements. The upcoming trend in resolving this issue is the use of the automatic control systems providing stabilization of the contact pressure value. The present paper considers the features of the contemporary automatic control systems of the current collector’s pressure; their major disadvantages have been stated. A scheme of current collector pressure automatic control has been proposed, distinguished by a proactive influence on undesirable effects. A mathematical model of contact strips wearing has been presented, obtained in accordance with the provisions of the central composition rotatable design program. The analysis of the obtained dependencies has been carried out. The procedures for determining the optimal current collector pressure on the contact wire and the pressure control principle in the pneumatic drive have been described.
Highlights
The main directions of technological advancement of electric railway systems are increasing speed and capacity of passengers traffic and cargo transportation.The one of the biggest difficulties in high speed railroads operation is solving the problem of safe and reliable power transfer to the trains
Current collector is a electromechanical device mounted on a roof of an electric train and designated to transfer power to train through contact with overhead line
The power collection quality and the wear of both pantograph and catenary highly depend on pantograph dynamic behavior
Summary
The main directions of technological advancement of electric railway systems are increasing speed and capacity of passengers traffic and cargo transportation.The one of the biggest difficulties in high speed railroads operation is solving the problem of safe and reliable power transfer to the trains. A study of the contact strips wear from contact pressure and movement speed (current load is absent);
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