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A 220 V, 1500 rpm, 11.6 A separately excited motor is controlled by a single-phase fully controlled rectifier with an ac source voltage of 230 V, 50 Hz. Enough filter inductance is added to ensure continuous conduction for any torque greater than 25 % of rated torque, Ra = 2 Ω. 1. What should be the value of the firing angle to get the rated torque at 1000 rpm? 2. Ca1culate the firing angle for the rated braking torque and -1500 rpm. 3. Ca1culate the motor speed at the rated torque and α = 1450 for the regenerative braking in the second quadrant.

A 220 V, 1500 rpm, 11.6 A separately excited motor is controlled by a single-phase fully controlled rectifier with an ac source voltage of 230 V, 50 Hz. Enough filter inductance is added to ensure continuous conduction for any torque greater than 25 % of rated torque, Ra = 2 Ω. 1. What should be the value of the firing angle to get the rated torque at 1000 rpm? 2. Ca1culate the firing angle for the rated braking torque and -1500 rpm. 3. Ca1culate the motor speed at the rated torque and α = 1450 for the regenerative braking in the second quadrant.

Introductory Circuit Analysis (13th Edition)
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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A 220 V, 1500 rpm, 11.6 A separately excited motor is controlled by a single-phase fully controlled
rectifier with an ac source voltage of 230 V, 50 Hz. Enough filter inductance is added to ensure
continuous conduction for any torque greater than 25 % of rated torque, Ra = 2 Ω.
1. What should be the value of the firing angle to get the rated torque at 1000 rpm?
2. Ca1culate the firing angle for the rated braking torque and -1500 rpm.
3. Ca1culate the motor speed at the rated torque and α = 1450

for the regenerative braking in the

second quadrant.

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