Anti-Slip/Skid Re-Adhesion Control of Electric Motor Coach Based on Disturbance Observer and Sensor-Less Vector Control

Abstract When the adhesion coefficient between rail and driving wheel decreases, the electric motor coach has slip phenomena. We have already proposed the anti-slip re-adhesion control system based on disturbance observer. This system has the fine torque response for one driving wheel driven by one inverter-fed induction motor. However, the bogie of electric motor coach has four driving wheels driven two induction motors. These induction motors connected in parallel are often driven by one inverter. In order to realize the anti-slip and anti-skid re-adhesion control system for the bogie of electric motor coach, this paper proposes a new re-adhesion control method based on disturbance observer and speed sensor-less vector control.

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