Power Electronics Dissertation on Cascaded Multilevel Inverter
1. *******Title Name of Dissertation************
A
Dissertation Part-I
Submitted in partial fulfilment of the requirements for the award of the Degree
of Master of Technology in Power Electronics
Submitted
To
RAJIV GANDHI PRODYOGIKI VISHWAVIDYALAYA, BHOPAL (M.P.)
By
RACHITA KUMARI
Enrollment No. - 0179EE17MT16
Under The Supervision of
MILLENNIUM INSTITUTE OF TECHNOLOGY & SCIENCE
BHOPAL (M. P.)
SESSION-2017-2019
Prof. Santosh Kumar
Asst. Prof. & HOD
Department of Electrical & Electronics Engineering
M. I. T. S. Bhopal (M.P.)
2. MILLENNIUM INSTITUTE OF TECHNOLOGY & SCIENCE
BHOPAL (M.P.)
CERTIFICATE
This is to certify that the work embodied in this dissertation part-I entitled
“Title Name” being submitted by RACHITA KUMARI (Enrollment No. -
0179EE17MT16) in partial fulfillment of the requirements for the award of the
degree of Mater of Technology in Power Electronics to “Rajiv Gandhi
Praudyogiki Vishwavidyalaya, Bhopal (M. P.)” during the academic year 2017-
2019 is a record of bonafide piece of work, carried out by RACHITA KUMARI
under the supervision and guidance in the Department of Electrical &
Electronics Engineering at Millennium Institute of Technology & Science
Bhopal (M.P.).
APPROVED & SUPERVISED BY:
Santosh Kumar
Asst. Prof. & HOD, Electrical & Electronics Engineering
M.I.T.S Bhopal
MILLENNIUM INSTITUTE OF TECHNOLOGY & SCIENCE
MILLENNIUM INSTITUTE OF TECHNOLOGY & SCIENCE
BHOPAL (M.P.)
Dr. R. N. S Yadav
Group Director
M.G.I, Bhopal
(S. A. T. I. Vidisha)
Santosh Kumar
Head of Department
Electrical & Electronics Engineering
M.I.T.S, Bhopal
Dr. R. K. Karn
Principal
M.I.T.S, Bhopal
3. MILLENNIUM INSTITUTE OF TECHNOLOGY & SCIENCE
BHOPAL (M.P.)
CERTIFICATE OF APPROVAL
Session-2017-2019
This is to certify that the dissertation work of RACHITA KUMARI
(Enrollment Number–0179EE17MT16) students of 3rd
semester M.Tech
(Power Electronics) has been conducted on dated ……………………. in the
Electrical & Electronics Engineering Department, M.I.T.S. Bhopal (M.P.).
Topic: - Title Name
Internal Examiner External Examiner
………………….. …………………………….
………………….. …………………………….
………………….. …………………………….
Date:-……………
Place: - Bhopal
4. MILLENNIUM INSTITUTE OF TECHNOLOGY & SCIENCE
BHOPAL (M.P.)
DECLARATION
I RACHITA KUMAI a student of M. Tech in Power Electronics, session:
2017-19, Millennium Institute of Technology & Science, Bhopal (M.P.),
hereby declare that the work presented in this dissertation par-I entitled “Title
Name” is the outcome of my own work, is bonafide and correct to the best of
my knowledge and this work has been carried out taking care of Engineering
Ethics. The work presented does not infringe any patented work and has not
been submitted to any other university or anywhere else for the award of any
degree or any professional diploma.
I also declare that “A check for plagiarism has been carried out on the
dissertation Part I and is found within the acceptable limit and report of which is
enclosed herewith”.
RACHITA KUMARI
Enrollment Number- 0179EE17MT16
5. ACKNOWLEDGEMENTS
With deep reference and profound gratitude, I express my sincere thanks to Prof. Santosh
Kumar, Head, Department of Electrical & Electronics Engineering, M.Tech Coordinator,
and Power Electronics & for accepting me to work under his valuable guidance, closely
supervising my work over the past 6 months and offering many innovative ideas and helpful
suggestions, which led to the successful completion of this work.
I would like to give thanks to, Dr. R. N. S. Yadav, Director, MGI Bhopal, Dr. R. K. Karn,
Principal, MITS, Bhopal for their kind cooperation and providing all possible facilities to
complete thesis work.
I also express my heartfelt gratitude to Prof. S K Soni, Miss Sadaf Husain, Miss Ragini
Singh, Prof Srishti Asharma, Ms Kavita Tripathi, Mr. Shubhansh Chourasiya, Priya
Jha, Ms Seema Shukla all faculties & staff of electrical engineering department for their
continuous motivations to keep working and meet the deadlines. They have made my work in
systematic way and produce successful results.
I am thankful to Miss Shubhadra Yadav, Dean, MGI Bhopal, Mr. R S Yadav, CAO, MGI
Bhopal, Er. Shishir Nigam, CEO, MGI Bhopal, for their helps.
My special thanks to Respected Er. Vinod Yadav, Chairman, MGI Bhopal, for his blessings
& support to the successful completion of my work.
I am also thankful to my classmates who helped me directly or indirectly throughout my
work.
Lastly but not the least I must express thanks to my Parents, sister, brother & Friends without
their moral support it was impossible for me to complete this work.
RACHITA KUMARI
Enrollment No. 0179EE17MT16
6. ABSTRACT
Give the details of whole work……
For Example of other work- given below
The other multilevel inverter is the Flying Capacitor Multilevel Inverter (FCMI) which has
the same principle as the diode clamped multilevel inverter but it doesn’t require any
clamping diode instead it uses the capacitor. MLI has a great advantages over the
conventional two level inverter the only drawback is that it uses a big number of
semiconductors switches.
This dissertation is based on Cascaded multilevel Inverter which reduces switches for
generating 7 level output. The multicarrier PWM technique is used for switching on/off the
MOSFET switch. The whole model is simulated in MATLAB /SIMULINK and is applicable
to different type of domestic loads. The THD of the system is calculated.
Keywords: MLI, CHMLI, DCMLI, FCMLI, THD, MC, PWM.
7. INDEX
Contents Page No
CERTIFICATE II
APPROVAL CERTIFICATE III
DECLARATION IV
ACKNOWLEDGEMENTS V
ABSTRACT VI
TABLE OF CONTENTS VII
LIST OF FIGURES VIII
LIST OF TABLES IX
ABBREVIATIONS X
CHAPTER 1 1-11
Introduction
1.1 Introduction 1
1.2 Problems Statement 9
1.3 Motivation 10
1.4 Objectives 11
CHAPTER 2 12-16
Literature Review 12
CHAPTER 3 17-35
Methodology 17
3.1 18
9. List of Figures
Fig No: Title Page No
1.1 2
1.2 2
1.3 3
3.1 17
3.2 18
3.3 19
4.1 38
4.2 39
4.3 39
5.1 46
5.2 47
5.3 48
10. List of Tables
Table No Description Page no
1.1 Load Voltage wit corresponding conducting switch 3
3.1 20
3.2 23
3.3 25
3.4 26
4.1 42
5.1 47
11. Abbreviations
RE Renewable Energy
DC Direct Current
MCS Multi Carrier Signal
VSC Voltage Source Converter
PWM Pulse Width Modulation
MLI Multi-Level Inverter
