A single-phase full-wave converter controls a separately excited DC motor speed. A full converter also controls the field circuit, setting the field current to the maximum possible value. The AC supply voltage to the armature is one phase, 110V, 50Hz. Ra = 1.5-ohm, field current resistance Rf=180ohm, and voltage motor constant Kv=1.4 V/A rad/s. If the armature converter angle is aa =45° and the armature current is la=28A i) Determine the voltage across the field circuit. ii) Analyze the performance of the motor in terms of the torque developed and the speed. iii) Determine the total input power from the supply.

A single-phase full-wave converter controls a separately excited DC motor speed. A full converter also controls the field circuit, setting the field current to the maximum possible value. The AC supply voltage to the armature is one phase, 110V, 50Hz. Ra = 1.5-ohm, field current resistance Rf=180ohm, and voltage motor constant Kv=1.4 V/A rad/s. If the armature converter angle is aa =45° and the armature current is la=28A i) Determine the voltage across the field circuit. ii) Analyze the performance of the motor in terms of the torque developed and the speed. iii) Determine the total input power from the supply.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.4P

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