Results in Engineering,
Journal Year:
2024,
Volume and Issue:
23, P. 102582 - 102582
Published: July 18, 2024
A
maiden
attempt
was
made
to
utilize
a
novel
hybrid
meta-heuristic
algorithm
named
radial
movement
optimization
with
arithmetic
(HRMO-AOA)
for
the
application
of
selective
harmonic
elimination
(SHE)
in
five
level-neutral
point
clamped
inverter
(5
L-NPCI).
The
investigated
system
comprises
grid
integrated
solar
PV
cell
5
L-NPCI
and
wind
units.
HRMO-AOA
technique
is
utilized
optimize
switching
angles
reducing
total
distortion
(THD).
Investigations
are
carried
connected
considering
complex
irradiations,
fixed
power
at
constant
step
load
changes
first
time.
Studies
reveal
that
SHE
(301
V)
performs
well
over
sinusoidal
pulse
width
modulation
(SPWM)
(290.05
varied
conditions.
Further,
L-NPC
has
shown
significant
improvement
THD
reduction
(4.59
%)
conventional
methods
like
SPWM
(17.66
%),
SHE-PWM
(9.88
neural
network
PSO
(8.64
firefly
(7.88
differential
harmony
(7.52
teaching-learning
(6.89
Furthermore,
investigations
suggests
techniques
converges
faster
above
mentioned
techniques.
Results in Engineering,
Journal Year:
2024,
Volume and Issue:
22, P. 102247 - 102247
Published: May 9, 2024
In
response
to
the
escalating
challenges
posed
by
climate
change,
global
energy
sector
has
witnessed
a
paradigm
shift
towards
sustainable
alternatives.
The
promising
fuel
cell
technology
known
as
proton
exchange
membrane
(PEMFC)
found
widespread
use
in
variety
of
mobile
and
stationary
applications.
This
paper
presents
super-twisting
sliding
mode
(STSM)
control
for
maximum
power
point
tracking
(MPPT)
on
system
incorporated
floating
interleaved
boost
converter
(FIBC).
work
aims
extract
from
PEMFC
means
robust
conjunction
with
FIBC
improve
current
ripple.
proposed
controller
is
designed
combining
STSM
MPPT
methods.
tracks
down
system,
corresponding
values
act
reference
controller.
results
show
that
incorporating
can
result
ripple
reduction
when
compared
traditional
(IBC).
obtained
demonstrate
capability
closed-loop
maintain
system's
robustness
under
parameter
variations.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Dec. 16, 2023
Renewable
energy
integration
introduces
grid
instability
due
to
variable
and
intermittent
sources
like
solar
wind,
impacting
reliability.
This
paper
provides
a
thorough
discussion
of
recent
advancements
emerging
trends
in
grid-integrated
wind
systems
(GIWES)
(GISES).
More
than
70
research
articles
have
been
rigorously
assessed
listed
the
technological
economic
challenges.
The
increase
installations
grid-Integrating
gives
rise
challenges
as
strain,
peak
shaving
impacts,
unpredictability
renewable
(RES),
power
quality
disturbances.
A
variety
custom
devices,
such
dynamic
voltage
restorers
(DVR),
static
synchronous
compensators
(STATCOM),
active
filters
(APF),
unified
conditioners
(UPQC),
gained
popularity
response
these
Among
various
challenges,
disturbances,
including
sag,
swell,
current
harmonics
pose
significant
issues.
To
address
disturbances
this
work
present
novel
approach
utilizing
fuzzy
logic
(FL)
develop
multi-feeder
interline
power-quality
(MF-IUPQCs).
MF-IUPQC
has
three
legs
levels,
each
which
four
diode-clamped
inverters.
Switching
is
carried
out
through
use
space
vector
pulse
width/duration
modulation
(SVPWM).
Total
harmonic
distortion
(THD)
induced
by
nonlinear
loads
reduced
FLC-based
MF-IUPQC,
also
improves
performance
offers
smooth
DC-link
voltage.
proposed
control
mechanism
implemented
using
MATLAB/Simulink.
fuzzy-based
controller
compared
industry-standard
proportional-integral
(PI)
determine
its
efficacy.
them,
based
on
FLC
delivers
smoothest
profile
lowest
THD.
Results in Engineering,
Journal Year:
2022,
Volume and Issue:
15, P. 100475 - 100475
Published: June 20, 2022
The
problem
of
the
optimal
placement
and
sizing
dynamic
reactive
power
compensators
in
AC
distribution
networks
is
addressed
this
paper
from
convex
optimization.
exact
mixed-integer
nonlinear
programming
(MINLP)
model
transformed
into
a
second-order
cone
(MISOCP)
model.
main
advantage
MISOCP
formulation
possibility
finding
global
optimum
with
branch
&
cut
combined
interior-point
method
due
to
structure
continuous
part
problem,
i.e.,
multi-period
flow.
are
sized
dimensioned
considering
daily
load
curves
variable
injections.
Numerical
validations
tested
33-
69-bus
test
feeders
using
CVX
tool
available
for
MATLAB
MOSEK
solver.
These
simulations
demonstrate
effectiveness
robustness
approach
when
compared
solution
MINLP
obtained
GAMS
software.
International Journal of Electrical Power & Energy Systems,
Journal Year:
2023,
Volume and Issue:
155, P. 109601 - 109601
Published: Oct. 27, 2023
In
the
context
of
increasing
penetration
level
photovoltaic
energy,
its
intermittence
and
randomness
bring
challenges
such
as
voltage
over-limit
increased
network
loss
to
distribution
network.
The
paper
proposes
a
real-time
two-time-scale
regulation
method
with
soft
open
point
(SOP)
solve
reactive
power
optimization
problem.
To
obtain
hourly
scheduling
strategies
for
on-load
tap
changers
switchable
capacitor
banks,
centralized
problem
is
formulated
mixed
integer
second-order
cone
programming
in
first
stage.
second
stage,
active
system
divided
into
multiple
subsystems
according
proposed
partitioning
method,
SOP
regulated
adjust
through
an
effective
control
strategy
local
measurement
information
subsystems.
takes
full
account
photovoltaic,
can
conduct
distributed
based
on
rapid
continuous
response
SOP.
Compared
traditional
methods,
this
has
lower
communication
costs,
better
performance,
does
not
dependent
accurate
flow
model.
Finally,
effectiveness
verified
by
IEEE
33-bus
123-bus
simulation
examples.
