Abstract: The invention relates to a control system for controlling the movement of passenger access doors in railway vehicles and method for operating them based on said system, the object of which is to reduce the number of incidents occurring in said doors and it basically comprises power control means of the motor (5) operating the doors in charge of regulating the voltage, reversing the polarity or rotation of and applying a brake to said motor (5) and state and position control means of said doors which perform a triple-check of the state and position of said doors.

Abstract: A high power isolated switching converter is provided, comprising a first power (11) stage and second power (12) stage connected in cascade such that the second power (12) stage is by-passed during part of a start-up mode.

Abstract: A power switching system is coupled to a first voltage source and a second voltage source of different voltages through a first, second and third terminals, a common mode choke coil includes a core, a first, second and third coils such that each coil is connected in series to a terminal, respectively. The core includes at least a first core and a second core such that each coil is wound around to the both cores for attenuating the common mode noise in predetermined frequency bands, respectively.

Abstract: Universal switched power converter having a transformer that comprises a first winding (11-3) divided into two parts and having an intermediate tap (11-3-1), and a second winding (11-9) connected in cascade with rectifier means (12) and filter means (13), so that a first current flows through the part of said first winding (11-3) comprised between the end of the primary winding (11-3) connected to a first input terminal (11-1) and the intermediate tap (11-3-1) and through a second switching element (11-6) connected to the intermediate tap (11-3-1) and to a second input terminal (11-2), when the input voltage applied across the input terminals (11-1, 11-2) is close to a first predetermined voltage value and the second switching element (11-6) is in a conducting state.

Abstract: Universal switched power converter having a transformer that comprises a first winding (11-3) divided into two parts and having an intermediate tap (11-3-1), and a second winding (11-9) connected in cascade with rectifier means (12) and filter means (13), so that a first current flows through the part of said first winding (11-3) comprised between the end of the primary winding (11-3) connected to a first input terminal (11-1) and the intermediate tap (11-3-1) and through a second switching element (11-6) connected to the intermediate tap (11-3-1) and to a second input terminal (11-2), when the input voltage applied across the input terminals (11-1, 11-2) is close to a first predetermined voltage value and the second switching element (11-6) is in a conducting state.