Discussion: 1. Briefly, discuss the starter voltage of induction motor speed control. 2. What are the disadvantages of this method?
Discussion: 1. Briefly, discuss the starter voltage of induction motor speed control. 2. What are the disadvantages of this method?
Related questions
Question
Transcribed Image Text:Exp. No. Stator Voltage Control of an Induction Motor using PWM
The objective:
The objective of this experiment is to present the voltage control of induction
motor.
The theory:
Stator Voltage Control is a method
used to control the speed of
Fan laad
an Induction Motor.
The speed of a three phase
induction motor can be varied by
varying the supply voltage.
n na n
Speed n
As we already know that the
torque developed is proportional to the square of the supply voltage and the slip
at the maximum torque is independent of the supply voltage.
The variation in the supply voltage does not alter the synchronous speed of
the motor.
Soo
Procedure:
1. Using Matlab-Simulink, connect the circuit shown above, Connect
the circuit shown above with Vdc=400V and Tm=10N.m.
2. To control the IGBTS, a PWM, 6-pulse and three arms will be used.
3. Let the carrier frequency = 2kHz.
4. Let the modulation index inside the PWM = m in order to vary it from the
command window of Matlab.
5. Vary the modulation index m as in table below, and measure the speed as
shown:
Modulation index
Speed r.p.m
1420
1
1354
0.6
1214
0.5
1131
1058
D4
0.2
948.7
Discussion:
1. Briefly, discuss the starter voltage of induction motor speed control.
2. What are the disadvantages of this method?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 4 images
