A Study on Brake Torque for Traction Motors by Using the Electric Brake

In this paper, a scaled model propulsion system was designed and tested for a electrical brake until stopping of the vehicles. A brake torque control method at the moment of vehicle stop was proposed accordingly. The test results for the electric brake were drawn while controlling the motor at low speed until the stop of the electric locomotives. Also, the speed detection method was used by implementing an observer that estimates the position and speed of rotor by using a resolver. Power converter was constructed as a converter-inverter system. Further, an improved brake method that uses only an electric brake till motor stop is proposed by comparing those in the blending brake that uses a air brake while reducing brake torque at vehicle stop.