WSEAS TRANSACTIONS ON MATHEMATICS,
Journal Year:
2025,
Volume and Issue:
24, P. 209 - 219
Published: April 2, 2025
Studying
the
nonlinear
dynamical
systems
and
their
stability
is
important
for
various
engineering
applications,
especially
with
power
systems.
While
previous
studies
have
examined
primary,
subharmonic
resonances
quasiperiodicity
in
systems,
phenomena
of
intermittency
remain
unfamiliar.
This
study
analyses
swing
equation,
which
a
second-order
differential
equation
that
characterises
dynamic
behaviour
Intermittency,
modelled
by
sudden
bursts
within
periodic
regions,
plays
vital
role
transition
from
to
chaos.
It
also
identifies
conditions
under
occurs,
mainly
when
varying
inertia
voltage
machine.
Numerical
simulations,
bifurcation
diagrams,
Poincar´e
maps,
heat
maps
Lyapunov
exponents
are
used
determine
intermittency.
Findings
show
happens
as
precursor
chaos,
affecting
system.
Results
indicate
small
disturbances
can
induce
instability,
thereby
providing
insights
into
control
aspect.
contributes
broader
understanding
highlights
importance
identifying
precursors
chaos
mitigate
adverse
effects.
Energies,
Journal Year:
2025,
Volume and Issue:
18(9), P. 2154 - 2154
Published: April 23, 2025
Hydrogen
is
expected
to
play
an
important
role
in
decarbonizing
different
heavy
industries
and
the
transportation
sector.
Water
electrolysis
is,
therefore,
one
of
most
rapidly
spreading
energy
technologies,
with
PEM
electrolyzers
taking
a
continuously
increasing
share
technology
mix.
Most
often,
aim
form
green
hydrogen,
utilizing
electricity
exclusively
renewable
origin.
The
intermittency
such
sources,
however,
poses
several
technological
challenges
financial
questions.
Focusing
on
electrolyzers,
we
discuss
effect
pressure,
temperature,
reaction
rate
changes,
induced
by
intermittent
operation,
general
thoughts
regarding
system
component
erosion
caused
regular
start–stop
cycles
are
also
considered.
As
case
study,
present
high-level
techno-economic
analysis
data
from
pilot
1
MW
system,
coupled
20
PV
farm,
deployed
Hungary.
We
underscore
importance
often
overlooked
local
regulations
incentives,
which
strongly
influence
beneficial
operation
scenario.
