PROCESS FOR SUPPLYING EMERGENCY AUXILIARY CHARGES, AUXILIARY CONVERTER AND RAILWAY VEHICLE FOR THIS PROCESS

摘要

This method for supplying an auxiliary auxiliary load (22) for an on-board railway vehicle comprises the steps of: - providing in each switch of a charger at least one controllable electronic power switching element specific to to switch the current flowing in the arm where it is placed, and - in normal mode, a control unit controls (210) the switching of the controllable electronic elements from the on state to the off state and vice versa at given times freely to rectify the three-phase voltage, the switching frequency of the transistors being greater than at least twenty times the fundamental frequency of the three-phase voltage, - in emergency mode, the control unit controls the switching of the electronic elements to produce a three-phase voltage auxiliary device for auxiliary emergency loads.