Traction motor broken bar fault injection based on parameters of equivalent circuit

This paper proposes a new rotor broken bar fault injection method which is based on equivalent circuit parameter for traction motor int he hardware-in-t he-loop simulation plat form of CRH2 high speed train. Feature information of rotor bar broken fault are extracted and analyzed in detail first, and then relationships between squirrel cage rotor broken faults and feature parameters are established. In order to validate the effective of this new fault injection method, some experiments were carried out. The simulation results show this fault injector can obtain better performance under different fault conditions.