1
COURSE PLANNER
SUBJECT: CONTROL OF ELECTRICAL
DRIVE[2160913]
B.E. – THIRD YEAR
Class – Electrical 2014
Term: 16/2 (DEC-16 to APR-17)
Faculty: PROF. C. P.VAIDYA PROF. P. D. SOLANKI
PROF. T. S. GAJJAR PROF. N. B. KANTHARIA
CONTENTS:
1. Course Outcomes
2. Course Contents [Syllabus]
3. List of Reference Books
4. List of Experiments
5. Major Equipment Required for Experiments
6. List of Open Source Software and Learning websites required for experiments
7. Active Learning Assignment and Tutorial.
INSTRUCTIONS:
1. This set of Assignment-Tutorial consist the collection of questions of past GTU Question papers.
2. Attend the questions which are frequently asked in GTU exams and/or the questions which are
Bold Marked.
3. Students should make a separate Chapter wise Files [Write in File Pages] to solve these
Questions.
4. Students must solve these given set of Assignments by themselves only.
5. Assessment of given assignment should be done regularly after completion of each chapter by
Students from the respective faculty members.
2
1. Course Outcomes
SUBJECT NAME: Control of Electric Drive [2160913]
After learning the course the students should be able to:
1. Select a drive for a particular application based on power rating.
2. Select a drive based on mechanical characteristics for a particular drive application.
3. Operate and maintain solid state drives for speed control of DC and AC machines.
4. Operate and maintain solid state drives for speed control of various special electrical machines.
3
2. Course Contents
[Syllabus]
Subject Code: 2160913
Subject Name: Control of Electric Drive
Sr.
No
Topics Total
Hrs.
%
Weightage
1
Introduction: History Of Dc Drive -Electronic Control -Solid
State Control • State Of Art Of Dc Drive • Block Diagram Of
Drive - Part Of Electrical Drive
2
06
2 Dynamics of Electrical Drives:Types of Load-Quadratal
diagram of speed –torque characteristics – Types and
Characteristics of load torque – Dynamics of motor- load
combination – steady state & transient stability of an electrical
drive – Determination of moment of inertia.
06 15
3 Dc Drives:Speed-torque characteristics: DC separately excited,
shunt and series motors. Modified speed-torque characteristics
with resistive control; Analysis for speed-torque equations in
terms of firing angle and duty cycle; Modified speed-torque
characteristics with phase controlled converters for continuous
conduction and discontinuous conduction, Modified speed-torque
characteristics with DC-DC converters for continuous conduction
and discontinuous conduction; Closed loop speed control schemes;
Dynamic model of DC machine; Speed and position control
scheme using the dynamic model.
10 24
4 Scalar control of AC machines:Review of V/f control; VSI
based Induction Motor control; Harmonics and Harmonic torques
with VSI; Selection of carrier frequency and harmonic spectrum;
Advantages of V/f control over other scalar control techniques;
Various operating modes for doubly fed induction machine: Sub-
synchronous and super-synchronous motoring and generating;
Static Scherbius drive: Design aspects like speed range, power
factor, ratings of components; Closed-loop speed control schemes:
slip control, current limit control; CSI fed IM; Speed-torque
characteristics with current source; Comparison with VSI based
control
10
24
5 Dynamic modeling and Vector control: Dynamic model of induction motor:ABC reference frame,
Arbitrary reference frame, stationary reference frame, rotating
reference frame;Principle of Vector control, Field oriented control:
Stator Flux Control
and Rotor Flux Control; Direct torque control; Comparison of
10 21
4
FOC
and DTC, Introduction to Synchronous motor and BLDC machine
drive
6 Applications of Electric DrivesIntroduction to Solar and
batterypowered Drives; Introduction to traction Drives; Servo
motor drive requirement –control and implementation
04 10
5
3. List of Reference Books
1. Bimal K. Bose, “Modern Power Electronics and AC Drives”, Pearson Education
2. VedamSubrahmanyam, “Electric Drives”, TMH (I), Second Edition,
3. G..K. Dubey, “ FundamentalsofElectrical Drives”, Narosa Publishing House, New Delhi, 2nded. 2001.
4. G. K. Dubey, “Power Semiconductor Controlled Drives”, Prentice Hall International Edition. 1989.
5. J.M.D. Murphy and F.G. Turnbull, “Power Electronics Control of AC Motors”, Peragmo
6. R.Krishnan, “ElectricMotorDrives–Modeling,AnalysisandControl” PHI
7. Werner Leonhard, “Control of Electrical Drives”, 3rd ed., Springer, 2001
8. Theodore Wildi, “Electrical Machines, Drives and Power Systems”, sixth edition, Pearson
6
4 List of Experiments
SR.
NO. NAME OF PRACTICLES
1 Overview about electrical drive lab.
2 To study different methods of speed control of dc motor
3 To study and simulate speed control of separately excited dc motor with 1-phase semi
controlled drive.
4 To study and simulate speed control of separately excited dc motor with 1-phase fully
controlled drive.
5 To study and simulate scalar controlled of dc motor with armature resistance current
control method.
6 To study and simulate scalar controlled dc motor of closed loop voltage control method.
7a To study and simulate inverter based open loop speed control of induction motor by 120
mode of conduction.
7b To study and simulate inverter based open loop speed control of induction motor by 180
mode of conduction.
8 To study and simulate single phase ac voltage controller based speed control of ac motor
9
To study & simulate 3-phase to 2-phase transformation.
a. Park transformation
b. Clark transformation
10 To study and obtain i-v and p-v characteristics of pv solar panel.
7
5.Major Equipment Required for Experiments
Lab set up following.
1. Computer Lab with 20 computers.
COMPUTER SYSTEM
CPU INTEL P4 2.93 GHZ CORE2 DUO E7500
MOTHER BOARD INTEL P4 DG41RQ
HARD DISK 320 GB WESTERN DIGITAL
SALES
RAM 1GB DDR-2 PC 677 MHZ DYNET
CABINET P4 INTEX WITH SMPS
MONITER 15.6'' LCD LG
KEY BOARD 104 LOGITECH
MOUSE OPTICAL LOGITECH
2. Solar Panel of 80 W ratting.
8
6 List of Open Source Software and Learning
Websites Required for Experiments
1. http://www.electrical4u.com/electrical-drives/
2. http://nptel.ac.in/courses/108104011/
3. http://electrical4u.com/types-of-dc-motor-separately-excited-shunt-series- compound-dc-motor/
4. https://www.wisconline.com/learn/careerclusters/stem/iau13208/fundamentals- of-a-dc-motor
5. http://www.ni.com/white-paper/3656/en/
6.http://www.minarik.com/drupal/content/products/Electrical%3E%3EControl%3E%3EDrives%3E%3EDC
%20Drives/0
7. http://electrical-engineering-portal.com/download-center/books-and-guides/siemens-basics-of-
energy/basics-of-dc-drives
8. https://www.joliettech.com/products/dc-variable-speed-drives/dc-drive-fundamentals/
9. http://www.eetimes.com/
10. http://www.ohioelectricmotors.com/a-guide-to-electric-drives-and-dc-motor-control-688
11.http://www.slideshare.net/psksiva13/63814075electrical-drivesandcontrollecturenotes
12. http://metalab.uniten.edu.my
9
7 Active Learning Assignment and Tutorial.
1. Preparation of Power Point Slides which Include Videos, Animation, Pictures and Graphics for
better Understanding theory and practical work. 2. Tutorial
ATTEMPT ALL
SR
NO. QUESTION YEAR MARKS
1 Give the comparison of A.C & D.C drives.
2 Define Electrical drive. Draw the block diagram of electrical
drive & explain each part of it. 2016 07
3 What is electric drive? Advantages of electrical drive. 2016 07
Chapter-1 Introduction:
History Of Dc Drive -Electronic Control -Solid State Control • State Of Art Of
Dc Drive • Block Diagram Of Drive - Part Of Electrical Drive
10
Chapter-2 Dynamics of Electrical Drives :Types of Load-Quadratal diagram of speed –
torque characteristics – Types and Characteristics of load torque – Dynamics of
motor- load combination – steady state & transient stability of an electrical drive
– Determination of moment of inertia.
ATTEMPT ANY THREE:
SR.
NO QUESTION YEAR MARK
1
Explain Four- Quadrate operation of motor driving a hoist load.
OR
Explain speed torque conventions and multi quadrant operation
of drives.
OR
Explain the four quadrant diagram of speed torque
characteristic using hoist load.
2016 07
2 Explain drive parameter, (1) Loads with rotational motion. (2) Loads
with translational motion. 2016 07
3
Explain various types of Load Characteristics for Different Load
Torque
OR
Explain the nature and classification of load torques.
2016 07
5 Explain the Fundamental Torque equation for electrical drive.
6
Derive the condition for steady state stability equilibrium of an
Electrical Drive, For sudden acceleration and deceleration in
Motor-Load system.
2016 07
7
Derive the equation for steady state stability of motor-Load system.
OR
Explain steady-state and transient stability of an electric drive.
2016 07
8 Explain Moment of Inertia and explain how to determine its value?
11
Chapter-3 Dc Drives: Speed-torque characteristics: DC separately excited, shunt and series
motors. Modified speed-torque characteristics with resistive control; Analysis for
speed-torque equations in terms of firing angle and duty cycle; Modified speed-
torque characteristics with phase controlled converters for continuous conduction
and discontinuous conduction, Modified speed-torque characteristics with DC-DC
converters for continuous conduction and discontinuous conduction; Closed loop
speed control schemes; Dynamic model of DC machine; Speed and position control
scheme using the dynamic model.
ATTEMPT ANY FIVE:
SR
NO. QUESTION YEAR MARKS
1
Draw & explain speed–torque characteristics of D.C motor.
OR
Explain speed torque characteristics of DC series motor, DC shunt
motor ,and PMDC motor
2016 07
2 Briefly explain different speed control methods of D.C motor
drive. 2016 07
3
Derive transfer function of separately excited D.C motor (D.C
motor drive) with armature control & draw block diagram or
dynamic model of it.
OR
Explain the dynamic model of dc motor drive.
2016 07
4
Derive transfer function of separately excited D.C motor (D.C
motor drive) with field control & draw block diagram or
dynamic model of it.
OR
Explain the dynamic model of dc motor drive.
2016 07
5 Explain closed loop speed control of DC motor drive using Block
diagram.
6 Explain closed loop position control of DC motor drive using Block
diagram.
7 Explain single phase fully controlled rectifier with CCM and DCM
8 Explain speed torque characteristics of DC series motor, DC shunt
motor ,and PMDC motor
09
A 200V dc series motor runs at 800rpm when operating at its full
load current of 10A. the motor resistance is 0.5Ω and magnetic
circuit can be assumed unsaturated, what will be the speed if (a) the
load torque is increase by 50% (b) the motor current is 5A.
2016 07
10
A 200V dc series motor has armature and field resistance of 0.2Ω
and 0.1Ω respectively. It takes a current of 20A from the supply
while running at 1300rpm. If an external resistance of 2Ω is added
in series with the motor calculate new armature current & speed.
2016 07
12
ATTEMPT ANY FIVE:
SR
NO. QUESTION YEAR MARKS
1
Explain Scalar control speed techniques for Induction motor.
OR
What are the disadvantages of scalar based speed control of
IM?
07
2 Explain constant torque and constant power region of Induction
Motor. 07
3 Explain difference between CSI and VSI. 07
4 Explain VSI fed Induction motor drive.
5 Explain the term Harmonics and Harmonic torques related with
VSI based drive. 07
6 Explain frequency controlled based speed control of IM. 07
7
Explain V/f speed control method for IM.
OR
Advantages of V/f control over other scalar control techniques
OR
Draw torque/speed characteristic of three phase Induction
motor and Explain V/F speed control of Induction motor.
07
8 Explain various operating modes for doubly fed induction
machine 07
9 Explain closed-loop speed control schemes with slip control &
current limit control
10 Explain Static Scherbius drive for speed control.
Chapter-4 Scalar control of AC machines :Review of V/f control; VSI based Induction
Motor control; Harmonics and Harmonic torques with VSI; Selection of carrier
frequency and harmonic spectrum; Advantages of V/f control over other scalar
control techniques; Various operating modes for doubly fed induction machine:
Sub-synchronous and super-synchronous motoring and generating; Static
Scherbius drive: Design aspects like speed range, power factor, ratings of
components; Closed-loop speed control schemes: slip control, current limit control;
CSI fed IM; Speed-torque characteristics with current source; Comparison with
VSI based control
13
Chapter-5 Dynamic modeling and Vector control: Dynamic model of induction motor:
ABC reference frame, Arbitrary reference frame, stationary reference frame,
rotating reference frame; Principle of Vector control, Field oriented control: Stator
Flux Control and Rotor Flux Control; Direct torque control; Comparison of FOC
and DTC, Introduction to Synchronous motor and BLDC machine drive.
ATTEMP ANY FIVE
SR
NO. QUESTION YEAR MARKS
1 State the advantages and applications of synchronous motor
drives. 2016 07
2
What is vector control method? Explain Advantage over
scalar speed control method of Induction motor.
OR
Explain the principle of vector control model for ac induction
motor drives.
2016 07
4
Derive and explain voltage controlled vector model of three
phase induction motor.
OR
Explain d-q model of induction motor
2016 07
5 Explain Park and Clarke Transformation Matrix. 07
6
Explain significance of dynamic modeling with fundamental
vector control model. Also State Assumptions made in deriving
vector control of Induction Motor.
07
8 Explain different Reference Frame Theorems for vector
controlled speed control of Three phase Induction motor. 07
9 Derive and explain Electromagnetic torque Te from arbitrary
reference frame model of induction motor. 07
10
Explain Flux vector estimation control method for voltage
control method. Also draw structure of Flux Vector
Estimation.
OR
Explain Field oriented vector control of IM of stator flux
estimation.
07
11 Explain Direct vector control model of Induction motor. 07
12 Explain Indirect vector control model of Induction motor. 07
13 Explain BLDC drive and synchronous motor drive in detail. 07
14 Comparison of FOC and DTC. 07
15 Explain Field oriented vector control of IM with rotor flux
estimation.
14
ATTEMP ANY THREE
SR
NO. QUESTION YEAR MARKS
1 Write disadvantages of solar pump drive using PMDC motor.
Explain working of solar pump drive using DC motor in detail.
2 Explain the basic structure of solar drives. 2016 07
3 Explain advantages & disadvantages of traction drives 2016 07
4 Explain working of solar pump drive using Induction motor. 2016 07
5
Explain working of solar pump drive using Battery.
OR
Explain basic structure of solar and battery powered drives.
2016 07
6
Explain working of servo motor drive & its advantages.
OR
Explain the servo motor drive requirement, control and
implementation.
2016 07
7 Explain working of D.C [PMDC] drive with chopper control for
electric vehicles [battery powered vehicles]
8 Explain working of Induction motor drive with VSI control for
electrical vehicles.
9 Explain control scheme & construction of D.C traction drive & its
disadvantages.
10 Explain construction & working of A.C traction drive. Mention its
advantages & limitations.
11 Write disadvantages of solar pump drive using PMDC motor.
Explain working of solar pump drive using DC motor in detail.
12 Explain working of solar pump drive using Induction motor.
Chapter-6 Applications of Electric Drives: Introduction to Solar and battery powered
Drives; Introduction to traction Drives; Servo motor drive requirement – control
and implementation