A lo ac-dc full converter is used to control the speed of a dc motor, as shown in Fig. 10.21. The molor parameters are Ra = 0.25 N, kąð = 0.1 V/rpm, and La is sufficiently large. The converter is fed from a lø, 120 V, 60 Hz supply. For a = 60°, the motor current is continuous, and motor average current is 20 A, and the ripple current is 20%. (a) Draw waveforms of supply voltage (v), supply current (i), output voltage (vo), and output current (ig). (b) Determine the speed of the motor in rpm. (c) Detcrmine the power lost in the armature resistance and the power developed by the motor. (d) Determine the supply power factor. S2

A lo ac-dc full converter is used to control the speed of a dc motor, as shown in Fig. 10.21. The molor parameters are Ra = 0.25 N, kąð = 0.1 V/rpm, and La is sufficiently large. The converter is fed from a lø, 120 V, 60 Hz supply. For a = 60°, the motor current is continuous, and motor average current is 20 A, and the ripple current is 20%. (a) Draw waveforms of supply voltage (v), supply current (i), output voltage (vo), and output current (ig). (b) Determine the speed of the motor in rpm. (c) Detcrmine the power lost in the armature resistance and the power developed by the motor. (d) Determine the supply power factor. S2

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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