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Power Electronics




MANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


201
3
-
14

Semesters: 5th

Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F

Power

Electronics

--------------------------------------------------------------------------------------------
INDEX

S.No.

Contents

Page No.

1

Syllabus as per M.D. University


2

Teaching Methodology


3

Lesson Plan


4

References


5

Assignment submission Per
forma


6

Assignments

(1
-
7)


7

Focal Points


8

Monthly report form


9

Student feedback form


10

Attendance sheet



11

Previous year Question papers



12

Important Question from previous Year
Papers


13

Multiple Choice Questions



1
4

Class Notes (Ha
nd Written & Printed)





Power Electronics





M
ANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

S
ubject & Code: EE
-
317
-
F Power Electronics


--------------------------------------------------------------------------------------------

COURSE OBJECTIVE


The Course emphasizes on advancement in the field of power
electronics for high capacity
power device
s

& also provide
knowledge of equipments used in high voltage applications,

their
characteristics, process and equipment handling management and to
give the knowledge about Security to save the system.


METHODOLOGY


The pedagogy will be lectures, P
resenta
tions, Tutorials,
assignments and class work and Practical work.


ACHIEVEMENT


After the completion of course, all student will have detailed
and
conceptual
knowledge of Power Electronics equipments, their
applications
, performance & characteristics.


EVAL
UATION


Besides the semester end


examination, the students will be
continuously assessed during the course on the following basis


i.

Mid Term Examinations

30 Marks

ii.

Internal Assessment

20 Marks ( Assignments


+Attendance )


iii

End Semester Examin
ation 100 Marks


Total

: 150 Marks

Power Electronics





M
ANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)



Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Re
ena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics


--------------------------------------------------------------------------------------------


LESSON PLAN



Detailed Course Contents

References

Contact
Hours

Section A

UNIT
-
1 : INTRODUCTION

Role of
power electronics, review of

construction and char. of power diode,
Shottkey diode, power transistor, power
MOSFET, SCR, DIAC, Triac, GTO, IGBT &
SIT


UNIT
-
2:SCR


Ratings and protections, series and parallel

connections, R, RC and UJT firing circuit


and

o
ther firing circuits based on ICs and

micro

processors; pulse transformer and opto
-
coupler,

commutation techniques
.





PS Bhimra

(Ch. 1,3,4)






10

(16 Aug
-
3
Sept)


Section B

UNIT
-
3: AC REGULATORS









Power Electronics




Types of regulator, equation of load

current, calculat
ion of extinction angle,

output voltage equation, harmonics in load
voltage and synchronous tap changer, three
phase regulator.






PS Bhimra


(Ch. 9)




8
(4 Sept
-
18
Sept)

UNIT
-
4: CONVERTERS


One, two, three, six and twelve pulse

converte
rs, fully and half controlled converters,
load voltage waveforms, output voltage
equation, continuous and discontinuous
modes of operation, input power factor of
converter, reactive power demand, effect of
source inductance, introduction to four
quadrant /

dual converter, power factor
improvement techniques, forced com
-
mutated
converter, MOSFET and transistor based
converters.





PS Bhimra

(Ch. 6
)







15
(19 Sept
-
12 Oct)

Section C

UNIT
-
5: INVERTERS


Basic circuit, 120 degree mode and 180

degree mode cond
uction schemes, modified
McMurray, half bridge and full bridge
inverters, McMurray
-
Bedford half bridge and
bridge inverters, brief description of parallel
and series inverters, current source inverter
(CSI), transistor and MOSFET based
inver
ters.





PS Bhimra

(Ch. 9,10)







1
0
(15 Oct
-
2
9

Nov)

UNIT
-
6: CHOPPERS

Basic scheme, output voltage control
techniques, one, two, and four quadrant
choppers, step up chopper, voltage
commutated chopper, current commutated
chopper, MOSFET and transistor b
ased
choppers.



PS Bhimra

(Ch.
7
)




5

(29 Oct
-
2
Nov)

Power Electronics




Section D

UNIT
-
7: CYCLOCONVERTERS


Basic principle of frequency conversion,

types of cycloconverter, non
-
circulating and
circulating types of cycloconverters.



UNIT
-
8: DRIVES


Introduction to ele
ctric drives: DC drives


converter and chopper fed dc drives, ac

drives
-
stator voltage control, V/f control,
rotor resistance control, static Scherbius
system and static Kramer systems.






PS Bhimra

(Ch. 10,12)







15
(2 Nov
-
16
Nov)




Note
:

Revision of Syllabus & Previous year Paper
s

will be done from 16
Nov to 30 Nov.



Power Electronics






M
ANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics


--------------------------------------------------------------------------------------------



TEXT BOOK
S


1.

Power Electronics: P.S Bhimra


2.

Power Elect
ronics : MH Rashid; PHI


3.

Bose
-

Power electronics,Elsevier





REFERENCE BOOKS





1.

Rashid
-

Handbook of power electronics,Elsevier


2.

Power Electronics : PC Sen; TMH


3.

Power Electronics : HC Rai; Galgotia


4.

Thyristorised Power Controllers : GK Dubey, PHI

Power Electronics





M
ANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F
Power Electronics


--------------------------------------------------------------------------------------------









ASSIGNMENT SUBMISSION PERFORMA





DATE OF ASSIGNMENT

DATE OF

DATE OF

S
.NO

DOA

SUBMISSION

DISCUSSION



DOS

DOD

1

21/8/13

25/8/13

28/8
/13





2

7
/9
/13

12/9
/13

13
/9
/13





3

2
0/9
/13

25
/9
/13

28
/9
/13





4

5/10
/13

8/10
/13

11/10
/13





5

15
/10
/13

18/10
/13

2
2
/10
/13





6

2
4/10
/13

2
9/10
/13

02/11
/13





7

05
/11
/13

08/11
/13

12
/11
/13














Power Electronics




MANAGEMENT EDUCATION AND RESEARCH
INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

---------------------
-----------------------------------------------------------------------













Assignment


1


Q1 Answer the following terms:
-



IGBT




SIT



Q2 Discuss the role

of power electronics.


Q3 Differentiate between power diode & shottky diode.


Q4 Explain

construction of power diode?


Q5 What is DIAC & Traic?


Q6 what is power transistors? Explain following terms:


Q8 GTO


Q9
Power Mosfet


Q10
SCR








Power Electronics




MANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPART
MENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

-----------------------------------------------------------------------------------------
---







Assignment


2


Q1 Explain the following Terms:
-



Series connection



parallel connection


Q2 Explain,the various communication technique used in power
electronics.


Q3 Describe R & RC Circuiting in power electronics..


Q4 what is pulse transfor
mer?


Q5 Define Opto
-
coupler.


Q6 What is SCR?


Q7 What are various protection techniques used in p.e.


Q8 Explain Mosfet in details.


Q9 Discuss The roll of power electronics.


.Q10 Draw Block diagram of DIAC.








Power Electronics




MANAGEMENT EDUCATION AND RESEARCH IN
STITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

-----------------------
---------------------------------------------------------------------









Assignment


3


Q1 Explain the following Terms:
-



REGULATORS



CONVERTERS

Q2: Explain various types of Regulators.


Q3: Calculate the output voltage of three phase regulators.


Q4: Explain one,two & three pulse converters.


Q5:Write down the equation of load current.


Q6:Explain input power factor of converter


Q7:what are various power factor improvement techniques.


Q8:Explain continous & discontinous mode of operation of
conve
rters.


Q9: Explain six & twelve pulse converters.


Q10: what is forced commutated converter?





Power Electronics




MANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

--------------------------------------------------------------------------------------------



Assignment


4


Q1 Explain the following Terms:
-



Inverters



choppers


Q2 what is 120 degree conduction mode scheme of inverter.

Q3 Differentiate between Half bridge & full bridge inverters.

Q4 Give brief description of series &


parallel inverters.


Q5 What is CSI?


Q6 what is the basic scheme of c
hoppers?


Q7 Explain four quadrant choppers.


Q8What is Mosfet & Transister based choppers .


Q9 Write down the Applications of Choppers & Inverters


Q10 write down the difference between inverter & converter.

Power Electronics





MANAGEMENT EDUCATION AND RESEARCH INSTITUT
E
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

-----------------------------
---------------------------------------------------------------




Assignment


5


Q1.Discuss Three applications of cycloconverters. Q2.what
is the basic principle of frequency conversion?

Q3. How many types of cycloconverters?


Q4 what are the various ap
plication of electric drives.


Q5 What is electric drive ? Explain in detail.


Explain following:
-


Q6 V/F Control


Q7 Rotor resistance control


Q8 Static kramer system


Q9 what is pulse transformer?


Q10 Differentiate AC Drive & DC Drive.

Power Electronics





MANAGEMENT E
DUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

--------------------------------------------------------------------------------------------








Assignment


6


Q1 Discuss The ro
le

of power electronics


Q2 Differentiate between power diode & shottky diode.


Q3 Differentiate between Half bridge & ful
l bridge inverters.


Q4 Give brief description of series & parallel inverters.


Q5 What is CSI?


Q6:Write down the equation of load current.


Q7:Explain input power factor of converter


Q8:what are various power factor improvement techniques.


Q9 what is p
ulse transformer?


Q10 Differentiate AC Drive & DC Drive.

Power Electronics





MANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name

of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

--------------------------------------------------------------------------------------------




Assignment


7


Q1 Explain the following Terms:
-


Pipe
-
lining


Embedded system




Q2 w
hat is power transistors?

Q3. What is electric drive ?


Q4 Write down the equation of load current.

Q5 Differentiate between Half bridge & full bridge inverters.


Q6 what are various power factor improvement techniques.


Q7 Explain
the various communic
ation technique used in power
electronics.

Q8 write down various application of choppers & converters.


Q9 Calculate the output voltage of three phase regulators.


Q10

Give brief description of

series & parallel inverters
.
Power Electronics




MANAGEMENT EDUCATION AND RESEARC
H INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

-------------------
-------------------------------------------------------------------------



Important
Question
s on P
E

1.

.
What is meant by commutation of an SCR ? Classify various
commutation methods.

2.

Explain the process for triggering of Parallel connected SCR’s ?

3.

Draw the
circuit diagram of a 3 phase dual converter and explain its
working.

4.

What is Modified McMurray full bridge single phase inverter ? Draw its
diagram and discuss its operation.

5.

Explain the operation of a four quadrant chopper with neat & clean
diagram.

6.

Descr
ibe Static & Kramer drive for speed control of a 3 phase SRIM ?

7.

Explain the Principle of Operation and applications of a Series inverter.

8.

What do you mean by firing angle? Explain R, RC, UJT firing circuits.

9.

What do you mean by DC drives?

10.

Explain Snubber c
ircuit and why it is used.

11.

Distinguish between 120
0

and 180
0
operation of 3 phase inverters ?

12.

What is current source inverter? Discuss the working of a single phase
and 3 phase current source inverters.

13.

What is the importance of Freewheeling diode in a s
ingle phase half
wave rectifier? Explain with the help of diagrams ?

14.

How does a step up Chopper work ? Expain.

Power Electronics




15.

What is a Cycloconverter ? Enumerate some of its industrial
applications.

16.

Draw the circuit of a three phase to one phase bridge type
cycloconvert
er and explin its working.

17.

Explain the equalizing circuits for thyristers in series and explin their
operation.

18.

Draw the circuit diagram and waveshapes of input voltage, output
voltage and load current in a single phase full wave regulator. Derive
equatio
ns for average and RMS output voltage.

19.


What do you mean by AC drives?

20.

Compare power diode with Schottky diode.

21.

Differentiate between DV/DT and DI/DT ratings.

22.

Draw the configuration and circuit of a Power Bipolar junction
Transistor and Explin.

23.

Draw and Ex
plain the basic construction and characterstics of

1)

DIAC

2)

TRIAC

3)

SCR

4)

IGBT

5)

GTO















Power Electronics




MANAGEMENT EDUCATION AND RESEARCH INSTITUTE
COLLEGE OF ENGINEERING AND TECHNOLOGY


MERI
-
CET


(DEPARTMENT OF ELECTRICAL & ELECTRONICS


ENGINEERING
-

EEE)


Session


2
013
-
14

Semesters: 5th


Name of the Faculty
:
Reena
Ahlawat

Subject & Code: EE
-
317
-
F Power Electronics

--------------------------------------------------------------------------------------------

FOCAL POINTS







More focus on practical work, which helps s
tudent to clear their concept
easily

and make the
ir conceptual knowledge strong
.




After completion of unit/section Seminar by individual students will be
taken and their problem will be rectify on next lecture.




Extra classes will be given to poor studen
ts.




Special atten
tion on waveforms and applicati
on for the devices.





Students’ presentations/seminars related to the particular subject, will be organized
unit
-
wise and a schedule has been prepared for this purpose.




Power

Point slides will be used to
make lectures more interactive.





Assignments will be taken on scheduled time which help students for
their internal record..




Surprise c
lass Tests will be assessed thoroughly and the students
will be intimated about their performanc
e.