The speed of a separately excited DC motor is controlled by a single phase full wave converter. The field circuit is als

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The Speed Of A Separately Excited Dc Motor Is Controlled By A Single Phase Full Wave Converter The Field Circuit Is Als 1 (38.87 KiB) Viewed 51 times

The speed of a separately excited DC motor is controlled by a single phase full wave converter. The field circuit is also controlled by a full converter and the field current is set to the maximum possible value. The AC supply voltage to the armature and field is single phase 410 V, 50 Hz. The armature resistance is 0.3 0, R+= 150 02, and the motor voltage constant is Ka = 1.2 V/A-rad/s. The armature current is set at 30 A. Assume that the sufficient inductance is presence in the armature and filed circuits to make the armature and field currents continuous and ripple-free. The firing angle of the armature controlled converter is 45°. Calculate the followings; i. torque developed by the motor, ii. iii. iv. angular of speed, w motor power factor, and (CO2:PO2 - 7 marks) (CO2:PO2 - 4 marks) (CO2:PO2 - 5 marks) firing angle of the armature circuit if the motor is operating at braking mode with condition as the same as in Q2(b)(ii). (CO2:PO2 - 3 marks)