A DC motor separately excited is used single-phase full converter to control the speed of a 5 hp, 110 V, 1200 rpm. The converter is connected to a single-phase 120 V, 60 Hz supply. The armature resistance is Ra=0.4 2, and armature circuit inductance is I -5 mH. The motor voltage constant is KO=0.09 V/rpm. Rectifier (or motoring) operation. The de machine operates as a motor, runs at 1000 rpm, and carries an armature current of 30 amperes. Assume that motor current is ripple-free. (a) Determine the firing angle a. (b) Determine the power to the motor. (c) Determine the supply power factor. Notes: losses in the converter are neglected, the power from the supply is the same as the power to the motor. ¹0 S₁ S3 P SA S₂ (u) ·00 E₂ C my
A DC motor separately excited is used single-phase full converter to control the speed of a 5 hp, 110 V, 1200 rpm. The converter is connected to a single-phase 120 V, 60 Hz supply. The armature resistance is Ra=0.4 2, and armature circuit inductance is I -5 mH. The motor voltage constant is KO=0.09 V/rpm. Rectifier (or motoring) operation. The de machine operates as a motor, runs at 1000 rpm, and carries an armature current of 30 amperes. Assume that motor current is ripple-free. (a) Determine the firing angle a. (b) Determine the power to the motor. (c) Determine the supply power factor. Notes: losses in the converter are neglected, the power from the supply is the same as the power to the motor. ¹0 S₁ S3 P SA S₂ (u) ·00 E₂ C my
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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Question
![A DC motor separately excited is used single-phase full converter to control the speed of a 5 hp,
110 V, 1200 rpm. The converter is connected to a single-phase 120 V, 60 Hz supply. The armature
resistance is Ra=0.4 2, and armature circuit inductance is I-5 mH. The motor voltage constant
is KO=0.09 V/rpm.
Rectifier (or motoring) operation. The de machine operates as a motor, runs at 1000 rpm, and
carries an armature current of 30 amperes. Assume that motor current is ripple-free.
(a) Determine the firing angle a.
(b) Determine the power to the motor.
(c) Determine the supply power factor.
Notes: losses in the converter are neglected,
the power from the supply is the same as the power to the motor.
S₁
S3
SA
S₂
(u)
VO
E₂
R₁](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4403ffcd-9bfd-415c-bc52-6273066ff721%2Ffb6c7cd7-8dc8-4074-adf9-12da4b08860f%2F25ncygp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A DC motor separately excited is used single-phase full converter to control the speed of a 5 hp,
110 V, 1200 rpm. The converter is connected to a single-phase 120 V, 60 Hz supply. The armature
resistance is Ra=0.4 2, and armature circuit inductance is I-5 mH. The motor voltage constant
is KO=0.09 V/rpm.
Rectifier (or motoring) operation. The de machine operates as a motor, runs at 1000 rpm, and
carries an armature current of 30 amperes. Assume that motor current is ripple-free.
(a) Determine the firing angle a.
(b) Determine the power to the motor.
(c) Determine the supply power factor.
Notes: losses in the converter are neglected,
the power from the supply is the same as the power to the motor.
S₁
S3
SA
S₂
(u)
VO
E₂
R₁
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