| 主权项 |
1. An electric traction system for a railway vehicle, comprising:
a synchronous electric machine having a plurality of phases; and, a power supply circuit, the power supply circuit including a converter, connected to a DC voltage source and delivering a polyphase voltage adapted to power the synchronous electric machine to which the converter is connected by a plurality of electric cables, an insulator and an electrical connector configured to be capable of short-circuiting the phases of the machines, placed downstream from the insulator, the electric traction machines further comprising a converter control, a primary detector for detecting an over-current in a plurality of output branches of the converter, and an actuator configured to actuate the opening of the insulator upon reception of a primary detection signal emitted by the primary detector, wherein the electric traction system further includes a secondary detector for detecting a fault of the short-circuit type downstream from the insulator and emitting a secondary detection signal toward the actuator, and wherein the actuator actuates the closing of the electrical connector for short-circuiting the phases of the machine upon reception of the secondary detection signal, on the condition the actuator has already received a primary detection signal emitted by the primary detector and having led to actuating the opening of the insulator. |
