Method to Design a Light-Load Regenerative Brake Controller to Suppress the Electrical Vibration of a DC Electrified Railway Vehicle Traction System

In DC-electrified railway systems, the Filter Capacitor (FC) voltage of the traction inverter of the regenerative braking train increases with an increase in the distance between the powering train and the regenerative braking train. In this case, the light-load regenerative brake control sometimes causes continuous oscillation of the FC voltage of the regenerative braking train. This paper proposes a method based on a linearized model to design the controller including PD compensators to suppress this continuous electrical oscillation.