This paper proposes a new Pulse Width Modulation technique for single phase cascaded H-bridge multilevel inverter for maintaining the output voltage across the load side with reduction in Total Harmonic Distortion (THD). The novelty of this paper is to equalize the area under the multilevel output voltage with that of area under the pure sine wave in discrete time periods. The main objective of this design is to maintain the desired output voltage with minimization of THD at the dynamic load conditions. The comparison between the proposed PWM technique with conventional Optimized Harmonic Stepped Waveform PWM is also shown and the results are proven that the proposed method is comparatively better. Particle Swarm Optimization algorithm is employed for solving the non-linear objective function and finding out the optimal switching angles for the MLM switches. MATLAB software is used to simulate the proposed design. The detailed mathematical modeling on the area equalization techniques with the advantage of using the proposed method than OHSW PWM technique is also presented in this paper.

1.
L. G.
Franquelo
,
J.
Rodriguez
,
J. I.
Leon
,
S.
Kouro
,
R.
Portillo
, and
M. A. M.
Prats
2008
, “
The age of multilevel converters drives
,”
IEEE Ind. Electron. Mag.
, vol.
2
, no.
2
, pp.
28
39
.
2.
Y.
Cheng
,
C.
Qian
,
M. L.
Crow
,
S.
Pekarek
, and
S.
Atcitty
2006
, “
A comparison of diode-clamped and cascaded multilevel converters for a STATCOM with energy storage
,”
IEEE Trans. Ind. Electron.
, vol.
53
, no.
5
, pp.
1512
1521
.
3.
J. M.
Carrasco
,
L. G.
Franquelo
,
J. T.
Bialasiewicz
,
E.
Galvan
,
R. C.
PortilloGuisado
,
M. A. M.
Prats
,
J. I.
Leon
, and
N.
Moreno-Alfonso
2006
. “
Power-electronic systems for the grid integration of renewable energy sources: A survey
,”
IEEE Trans. Ind. Electron.
, vol.
53
, no.
4
, pp.
1002
1016
.
4.
J.
Rodríguez
,
J.
Lai
, and
F.
Peng
2002
, “
Multilevel inverters: A survey of topologies, controls and Applications
,”
IEEE Trans. Ind. Electron.
, vol.
49
, no.
4
, pp.
724
738
.
5.
M.
Malinowski
,
K.
Gopakumar
,
J.
Rodriquez
, and
M.
Perez
2010
, “
A survey on cascaded multilevel inverters
,”
IEEE Trans. Ind. Electron.
, vol.
57
, no.
7
, pp.
2197
2206
.
6.
P. W.
Hammond
1997
, “
A new approach to enhance power quality for medium voltage AC drives
,”
IEEE Trans. Ind. Appl.
, vol.
33
, no.
1
, pp.
202
208
.
7.
A. J.
Visser
,
J. H. R.
Enslin
, and
H. T.
Mouton
2002
, “
Transformer less series sag compensation with a cascaded multilevel inverter
,”
IEEE Trans. Ind. Electron.
, vol.
49
, no.
4
, pp.
824
831
.
8.
L. M.
Tolbert
,
F. Z.
Peng
,
T.
Cunnyngham
, and
J. N.
Chiasson
2002
, “
Charge balance control schemes for cascade multilevel converter in hybrid electric vehicles
,”
IEEE Trans. Ind. Electron.
, vol.
49
, no.
5
, pp.
1058
1064
.
9.
J. R.
Rodriguez
,
J.-S.
Lai
,
F. Z.
Peng
,
2002
, “
Multilevel inverters: A survey of topologies, control, and applications
,”
IEEE Trans. Ind. Electron.
, vol.
49
, no.
4
.pp
724
738
.
10.
B.
Suryajitt
,
G.
Sudhakar
,
2014
, “
Power Quality Improvement Using Cascaded H-Bridge Multilevel Inverter Based Dstatcom
Int. Journal of Engineering Research and Applications
, Vol.
4
, Issue
11
, pp.
31
37
.
11.
Jorge Luis Diaz
Rodriguez
,
Luis David
Pabon
,
Aldo Pardo
Garcia
,
2015
, “
THD improvement of a PWM cascade multilevel power inverters using genetic algorithms as optimization method
Wseas Transactions on Power Systems
, Volume
10
, pp
46
54
.
12.
Mahmoud
El-Bakry
,
2015
, “
A 43-level filterless CMLI with very low harmonics values
Journal of Electrical Systems and Information Technology
, Volume
1
, Issue
3
.
13.
Kehu
Yang
,
Liangyu
Chen
,
Jianjun
Zhang
and
Jun
Hao
2016
, “
Parallel resultant elimination algorithm to solve the selective harmonic elimination problem
,”
The Institution of Engineering and Technology Power Electronics
, vol.
9
, Issue.
1
, pp.
71
80
.
14.
Mehdi
Hajizadeh
and
Seyed Hamid
Fathi
2016
, “
Selective harmonic elimination strategy for cascaded h-bridge five level inverter with arbitrary power sharing among the cells
,”
The Institution of Engineering and Technology Power Electronics
, vol.
9
, Issue.
1
, pp.
95
101
.
15.
S.
Selvaperumal
and
C. Christober Asir
Rajan
2014
, “
Investigation of fuzzy control in LCL resonant converter in RTOS environment
Journal of Intelligent and fuzzy systems
,
26
, pp.
913
924
.
16.
S.
Selvaperumal
,
C. Christober Asir
Rajan
and
S.
Muralidharan
2013
. “
Stability and Performance Investigation of a Fuzzy-Controlled LCL Resonant Converter in an RTOS Environment
IEEE Transactions on Power Electronics
, vol.
28
, Issue.
4
, pp.
1817
1832
.
17.
Khoukha
Imarazene
,
Hachemi
Chekireb
and
EI Madjid
Berkouk
2016
, “
Selective harmonics elimination PWM with self-balancing dc-link in photovoltaic seven level inverter
,”
Turkish Journal of Engineering and Computer Sciences
,
24
, pp.
3999
4014
.
18.
S. Albert
Alexander
,
Manigandan
Thathan
, “
Optimal Harmonic Stepped Waveform Technique for Solar Fed Cascaded Multilevel Inverter
Journal of Electr Eng Technology
, no.
10
, pp.
742
751
,Feb
2015
.
19.
Firouzkouhi
,”
Control of Cascaded H-bridge Multilevel inverter based on optimum regulation of switching angles, with FPGA implementation
,
European journal of electrical and computer engineering
,vol.
3
, no.
3
, Feb
2019
.
20.
M.S. Sivagama
Sundari
and
D.
periyasamy
, “
PSO based Selective Harmonic Elimination PWM for Cascaded H-Bridge Multilevel Inverter
IOP Conf. Series: Materials Science and Engineering
,
(
2021
)
012054
, doi:.
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