Energies,
Год журнала:
2023,
Номер
16(6), С. 2695 - 2695
Опубликована: Март 14, 2023
Physical
activity
involves
movements,
which
can
be
considered
sources
of
kinetic
energy,
that
are
expected
to
important
during
sports
activities.
Several
transducers
transform
this
energy
into
electrical
energy.
Piezoelectric
generators
widely
used,
and
several
applications
highlight
their
relevance.
However,
the
generated
output
power
is
location
dependent,
analysis
placement
kind
generator
challenging.
In
order
assess
availability
sources,
an
acceleration
data
method
presented.
Temporal
harvester
model-based
studies,
using
from
17
inertial
measurement
units
(IMUs)
located
across
whole
human
body,
were
conducted.
The
results
show
piezoelectric
cantilever-beam
harvesters
very
sensitive
impacts.
Extremity
segments,
such
as
feet
or
hands,
good
sources.
most
relevant
features
proposed
criteria
easily
evaluate
harvestable
IEEE Sensors Journal,
Год журнала:
2024,
Номер
24(9), С. 13892 - 13902
Опубликована: Март 19, 2024
Vibration
energy
harvesting
using
piezoelectric
transduction
is
becoming
a
promising
alternative
to
electrochemical
batteries
for
powering
the
low-powered
wireless
and
portable
electronic
devices.
Unlike
typical
cantilevered
vibration
harvesters
(PVEHs)
where
beam
with
tip
mass
experienced
excitation
directly,
low-frequency
from
coupled
longitudinal-transverse
of
two
magnetic
coupling-based
orthogonal
beams
(LF-PVEH)
proposed
in
this
paper.
An
attractive
feature
architecture
was
that
auxiliary
tolerated
high-shock
longitudinal
meanwhile
motion
induced
transverse
oscillation
parallel
direction
via
coupling.
To
verify
principle
feasibility
ascertain
effect
magnetically
on
dynamic
behaviors
power
generation
characteristics
LF-PVEH,
theoretical
analysis,
numerical
simulation,
experimental
testing
were
conducted,
respectively.
The
results
showed
when
amplitude
increased
3
5
mm,
output
maximum
voltage
no
more.
Besides,
by
increasing
proof
m1
20
g,
corresponding
resonance
frequency
LF-PVEH
can
be
reduced
8.5
Hz,
spatial
distance
Ly
10
optimal
effective
bandwidth
8
Hz
achieved
adapt
broadband
environments.
shows
reach
0.2
mW
at
11
load
resistance
540
kΩ.
Electronics,
Год журнала:
2023,
Номер
12(7), С. 1661 - 1661
Опубликована: Март 31, 2023
Direct-current
(DC)
microgrids
have
gained
worldwide
attention
in
recent
decades
due
to
their
high
system
efficiency
and
simple
control.
In
a
self-sufficient
energy
system,
voltage
control
is
an
important
key
dealing
with
upcoming
challenges
of
renewable
integration
into
DC
microgrids,
thus
storage
systems
(ESSs)
are
often
employed
suppress
the
power
fluctuation
ensure
stability.
this
paper,
performances
three
strategies
for
compared,
including
proportion
(PI)
control,
fuzzy
PI
particle
swarm
optimization
(PSO)
Particularly,
two
kinds
ESSs
battery
advanced
adiabatic
compressed
air
(AA-CAES)
different
operational
characteristics
installed
microgrid,
impacts
on
investigated.
The
comprehensively
compared
under
schemes,
various
scenarios
fluctuations,
participation
or
not,
fault
conditions.
Additionally,
dynamic
exhibited.
results
verify
validity
schemes
feasibility
configuration
microgrid.
ACS Applied Electronic Materials,
Год журнала:
2024,
Номер
6(6), С. 4539 - 4547
Опубликована: Май 22, 2024
Flexible
pressure
sensors
have
great
application
prospects
in
the
fields
of
human–computer
interaction
and
wearable
electronic
devices.
Nowadays,
emergence
planar
capacitive
composed
an
interdigital
electrode
has
solved
problem
mechanical
mismatch
between
layer
dielectric
during
packaging
further
realizes
miniaturization
thinness.
However,
there
are
few
reports
on
whether
adjusting
height
can
improve
sensitivity
sensor.
This
paper
proposes
a
strategy
based
dispensing
technology
to
performance
sensor
by
electrode.
The
results
show
that
optimal
is
1.3
mm.
On
this
basis,
increasing
number
fingers
also
expand
detection
range
In
order
sensor,
we
doped
barium
titanate
with
high
constant
introduced
pyramid
microstructure.
test
our
(0.6275
kPa–1,
≤1
kPa),
wide
(0.5–166
fast
response
time
(120
ms),
good
stability
after
10,000
cycles.
addition,
be
applied
various
scenarios
such
as
finger
pressing,
human
joint
motion
detection,
grasping
object
detection.
Meanwhile,
constructed
3
×
array
identify
distribution
spatial
pressure.
work
provides
solution
for
preparing
high-performance
using
electrode,
which
field
intelligent
wearables.
IEEE Access,
Год журнала:
2023,
Номер
11, С. 90038 - 90051
Опубликована: Янв. 1, 2023
There
exists
an
extensive
range
of
applications
for
elevated
gain
DC/DC
converters,
as
numerous
low-voltage
resources
are
exploited
power
supply.
Therefore,
this
study
introduces
a
groundbreaking
magnetically
coupled
converter
specifically
designed
with
low
voltage,
including
micro
PV
or
fuel
cell
systems.
By
enduring
current
and
voltage
stresses,
the
devices
in
ensure
remarkable
efficiency
while
maintaining
proven
ratio
capability.
The
operational
principles
thoroughly
discussed
supported
by
implementation
200W-400V
prototype.
In
order
to
confirm
effectiveness
converter,
experimental
tests
were
carried
out
different
scenarios,
confirming
its
dependable
functionality.
This
novel
opens
up
new
possibilities
harnessing
potential
resources,
offering
efficient
reliable
solution
conversion.
results
obtained
from
research
make
significant
contribution
progress
renewable
energy
systems
demonstrating
practicality
suggested
real-life
situations.
