Russian Federation
Russian Federation
Purpose: Failures in the operation of the Metro locomotive automatic signalling with automatic speed control lead to slowdowns and stops in the Metro tunnels and train schedule disruptions. The most common cause of such failures is interference in the inductive coupling channel between trackside devices and train equipment. The article formulates a compensation scheme for a previously developed receiver for compensating electromagnetic interference, with the inductance coupling asymmetry of automatic locomotive signalling taken into account. This is caused by the geometrical position of the contact rail. Methods: Based on the previously published paper that generally formulated a condition for interference compensation in an inductive coupling channel with the geometrical position asymmetry of the receiving coils and the contact rail, and the Biot-Savart-Laplace law, a new expression was obtained that takes into account the inclusion of additional receiving coils inductively connected to the contact rail. Results: A mathematical calculation defining the interference compensation condition has been put forward. A number of specific dependencies have been obtained for the coefficient of proportionality for adjusting the operating parameters of the interference compensation device and the EMF induced in the main and additional receiving coils of automatic locomotive signalling when changing their position geometry. Practical significance: The simulation allows determining the coefficient of proportionality characterizing the difference in the position geometry of the main and additional receiving coils. This coefficient value for the given coil position geometry is the basis for adjusting the proposed device operation in depot environment.
Electromagnetic compatibility, asymmetry, Metro, safety device, contact rail, third-rail conductor, inductive coupling, automatic locomotive signalling with automatic speed control
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