Actuators,
Год журнала:
2024,
Номер
13(11), С. 459 - 459
Опубликована: Ноя. 15, 2024
The
proton
exchange
membrane
fuel
cell
(PEMFC)
is
the
most
widely
used
cell,
but
it
also
has
some
limitations.
One
of
research
pain
points
controlling
oxygen
content
in
PEMFCs.
A
moderate
excess
boosts
electrochemical
reaction
efficiency,
while
an
appropriate
ensures
system
stability.
In
this
paper,
a
fourth-order
nonlinear
mathematical
model
PEMFC
stack
air
supply
established
to
solve
problem
optimal
ratio
(OER)
control
under
dynamic
load
conditions.
Based
on
model,
nonsingular
terminal
sliding
mode
controller
(NTSMC)
based
observer
(SMO)
proposed.
NTSM
exhibits
superior
robustness
and
performance
compared
other
structures.
Meanwhile,
SMO
accurately
predicts
states,
facilitating
precise
actions.
Additionally,
dual
surfaces
enhance
stability
against
parameter
uncertainties
external
disturbances.
Our
results
demonstrate
that
proposed
outperforms
traditional
ones
terms
performance,
which
significantly
enhances
efficiency
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
61, С. 105046 - 105046
Опубликована: Сен. 1, 2024
This
study
presents
a
comprehensive
technical,
environmental,
and
economic
analysis
of
thermal
power
plant
utilizing
solid
oxide
fuel
cells
(SOFC)
to
meet
urban
demands
for
electrical
power,
fresh
water,
hydrogen.
The
integrated
system
includes
SOFC
with
anode
cathode
recycling,
multi-effect
desalination,
generation
cycle
heat
recovery
unit
using
thermoelectric
generator,
hydrogen
compression
unit.
A
detailed
parametric
was
conducted
identify
optimal
conditions
key
outputs
such
as
total
cost
rate
exergy
efficiency,
employing
genetic
algorithms
artificial
neural
networks.
According
the
evaluation,
stack
accounts
65.11
%
costs
at
139.8
$/h,
inverter
contributing
11.9
%.
environmental
shows
that
proposed
emits
least
CO2
per
energy
compared
SOFC/GT
SOFC/GT/RC
systems.
indicates
increasing
pressure
ratio
enhances
output
production
gas
turbine.
However,
this
also
leads
higher
compressor
consumption,
thereby
reducing
net
power.
Furthermore,
current
density
results
in
greater
electricity,
hydrogen,
freshwater,
while
raising
exhaust
temperature,
which
aids
desalination
process.
optimization
show
an
efficiency
61.38
132.9
networks
time
from
124
h
14
min.
Here,
the
as-prepared
Mg-
X
wt%
Y
(
=
1,
3,
5,
and
10;
Cr
2
O
3
C
)
composites
were
ball
milled
with
Mg
for
different
durations
then
hydrolyzed
in
seawater
MgCl
solutions.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Авг. 26, 2024
Now,
the
present
power
generation
and
distribution
companies
are
working
on
renewable
energy
systems
because
their
features
low-level
atmospheric
pollution,
producing
less
greenhouse
pollutants,
more
reliability,
good
static
performance,
high
robustness.
In
this
work,
sunlight
Photovoltaic
(PV)
system
is
selected
of
its
advantages
easily
available
in
atmosphere,
flexibility,
zero
carbon
footprint,
easy
to
maintain,
transportation
cost.
However,
solar
networks
produce
nonlinear
I-V
characteristics.
Due
non-linear
nature
system,
extraction
peak
voltage
from
PV
module
a
very
tough
task.
So,
article,
variable
modified
step
grey
wolf
method
integrated
with
adaptive-neuro-fuzzy-inference-system
improve
production
systems.
The
proposed
maximum
point
tracking
controller
fast
identification
operating
point,
generating
fluctuated
oriented
converter
load
power,
providing
MPP
accuracy,
dependence
installation,
useful
for
all
environmental
bad
weather
conditions.
Another
problem
which
improved
by
introducing
wide
gain-boost
circuit.
circuit
development
cost
it
does
not
require
electronics
switches.
Here,
IGWM
an
AFLC-fed
investigated
using
MATLAB/Simulink.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Сен. 16, 2024
As
of
now,
all
over
the
world
is
focusing
on
Electric
Vehicle
(EV)
technology
because
its
features
are
low
environmental
pollution,
less
maitainence
cost
required,
high
robustness,
and
good
dynamic
response.
Also,
EVs
work
continuously
until
input
fuel
provided
to
stack.
Here,
a
Proton
Exchange
Membrane
Fuel
Cell
(PEMFC)
used
as
an
source
electric
vehicle
system
merits
fast
startup,
quick
However,
PEMFC
gives
nonlinear
voltage
versus
current
characteristics.
result,
extraction
maximum
power
from
stack
very
difficult.
The
main
aim
this
study
different
Maximum
Power
Point
Tracking
Techniques
(MPPT)
for
DC-DC
converter-fed
system.
studied
MPPT
controllers
Adjusted
Step
Value
Perturb
&
Observe
(ASV
with
P&O),
Adaptive
Size
Incremental
Conductance
(ASS
IC),
Radial
Basis
Functional
Network
(RBFN),
Step-Fuzzy
Logic
Controller
(IS
FLC),
Continuous
Variation
based
Particle
Swarm
Optimization
(CSV
PSO),
Value-Cuckoo
Search
Algorithm
CSA).
selected
controllers'
comprehensive
has
been
in
terms
extraction,
tracking
speed
MPP,
settling
time
output
voltage,
oscillations
across
design
complexity.
From
performance
results
hybrid
controllers,
ASV
CSA
technique
superior
when
equated
other
controllers.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Ноя. 8, 2024
This
research
study
presents
the
application
of
FC-PCC
(Fuzzy
Logic
Predictive
Current
Control)
algorithm
in
context
maximum
power
point
tracking
(MPPT)
for
a
proton
exchange
membrane
fuel
cell
system
employing
three-level
boost
converter
(TLBC).
The
proposed
approach
involves
integration
an
intelligent
fuzzy
controller
with
predictive
current
control
strategy
order
to
improve
performance
MPP
tracking.
Initially,
utilization
logic
data
values
obtained
from
PEMFC.
(P-I)
PEMFC
polarization
curve
is
determined,
followed
by
selection
reference
current.
A
technique
employs
ensure
voltage
balance
output
capacitor
converter.
hardware-in-the-loop
utilizes
real-time
and
high-speed
simulator,
specifically
PLECS
RT
Box
1,
obtain
findings.
computational
cost
overall
rather
low,
making
it
feasible
construct
using
1.
new
MPPT
quickly
finds
(MPP)
balances
capacitors
number
different
cells.
suggested
has
been
verified
demonstrate
rapid
location,
as
well
precise
balancing
robustness
environmental
variations.
was
tested
found
outperform
conventional
methods
like
Perturb
Observe
(P&O)
Incremental
Conductance
(IC)
terms
duration,
precision,
balancing,
achieving
15%
reduction
5%
deviation
value
voltage,
superior
stability
under
changing
temperature
pressure.
