Speed control of a 140 V, 1.68 kW DC motor single phase thyristor full wave AC-DC
Speed control of a 140 V, 1.68 kW DC motor single phase thyristor full wave AC-DC
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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Question
![Speed control of a 140 V, 1.68 kW DC motor single phase thyristor
full wave AC-DC
It is made by the converter. AA supply voltage 220 V (rms)
Is 50. In the converter
It is assumed that there is no loss. The armature resistance of the
DC motor is = 0.417 Q. Very
a large inductance is connected in series with the motor. The motor
voltage constant is = 0.0964 V/rpm.
The motor can be considered as a permanent magnet DC.
According to this,
a) Draw the driver (converter-motor) power circuit.
b) Calculate the nominal current of the motor.
c) Supply voltage, supply current, converter output voltage for
ignition angle a = 30 ° and
Draw the waveforms for the converter output current.
d) = 950 rpm and for nominal current,
d1) The firing angle of the converter,
d2) Effective value of supply and thyristor current,
d3) Supply power factor,
calculate.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F80054796-483b-4f86-a577-357a1996cbd6%2Fbee1ce68-cee0-416c-b06b-fcb62d049bd8%2Fnztsy4i_processed.png&w=3840&q=75)
Transcribed Image Text:Speed control of a 140 V, 1.68 kW DC motor single phase thyristor
full wave AC-DC
It is made by the converter. AA supply voltage 220 V (rms)
Is 50. In the converter
It is assumed that there is no loss. The armature resistance of the
DC motor is = 0.417 Q. Very
a large inductance is connected in series with the motor. The motor
voltage constant is = 0.0964 V/rpm.
The motor can be considered as a permanent magnet DC.
According to this,
a) Draw the driver (converter-motor) power circuit.
b) Calculate the nominal current of the motor.
c) Supply voltage, supply current, converter output voltage for
ignition angle a = 30 ° and
Draw the waveforms for the converter output current.
d) = 950 rpm and for nominal current,
d1) The firing angle of the converter,
d2) Effective value of supply and thyristor current,
d3) Supply power factor,
calculate.
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