Anna University Chennai  Regional Office, Coimbatore
Power systems
EE 9353

Spring 2014
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Anna University Chennai  Regional Office, Coimbatore
Power systems
EE 9353

Spring 2014
Problem 3.1 Please represent the model of the following systems using Matlab.
(a) G ( s )
10
s ( s 1)(2 s 3)
(b) G ( s ) =
K
( s + 2)( s + 4)(s 2 + 6s + 25)
Anna University Chennai  Regional Office, Coimbatore
Power systems
EE 9353

Spring 2014
VTU elearning Courseware
Control Engineering (ME55)
CONTROL ACTIONS
An automatic controller compares the actual value of the system output with the
reference input (desired value), determines the deviation, and produces a control signal
that will reduce
Anna University Chennai  Regional Office, Coimbatore
Power systems
EE 9353

Spring 2014
Problem 4.1 The system block diagram is as fallows, determine the stability of the system using
Routh criterion, and determine how many roots of the closed loop are in the right half of the
splane.
(a) G ( s )
10
s ( s 1)(2 s 3)
(b) G ( s )
1
s 1
(c) G
Anna University Chennai  Regional Office, Coimbatore
Power systems
EE 9353

Spring 2014
Assignment for Chapter 6:
Frequency Domain Analysis
61 Using the straightline approximations, plot the Bode Diagram (Logmagnitude
diagram and Logphase diagram) of the systems described by the following openloop
transfer functions. Determine the Gain
Anna University Chennai  Regional Office, Coimbatore
Power systems
EE 9353

Spring 2014
Assignment for Chapter 5: Root Locus
K r ( s + 1)
G
(
s
)
=
51 Given the openloop transfer function
s 2 ( s + a ) for a
unity feedback system, please sketch the root locus for
K r = 0 + with different a = 5, a = 9, = 10 .
Please determine the breakaway
Anna University Chennai  Regional Office, Coimbatore
Power systems
EE 9353

Spring 2014
Assignment for Chapter 7: System Compensation
1. Given the openloop transfer function of a unityfeedback system by
G (s) =
40 ,
s ( s + 4)
determine what kind of cascade compensator should be applied such that the gain
crossover frequency the compensate
Anna University Chennai  Regional Office, Coimbatore
Power systems
EE 9353

Spring 2014
B.E (ELECTRICAL AND ELECTRONICS ENGINEERING)
COLLEGE OF ENGINNERING, ANNA UNIVERSITY CHENNAI  25
EE9353 POWER SYSTEM OPERATION AND CONTROL  APRIL/MAY 2014
MAX TIME: 3Hrs MAX MARKS: 100
ANSWER ALL QUESTIONS
PART A (10*2=20)
1. Compare the performance of