Tesis
Diseño de un sistema de control difuso de seguimiento solar de dos ejes.
Fecha
2017-07Registro en:
Montalvo Jaramillo, Pablo Ernesto. (2017). Diseño de un sistema de control difuso de seguimiento solar de dos ejes. Escuela Superior Politécnica de Chimborazo. Riobamba.
Autor
Montalvo Jaramillo, Pablo Ernesto
Resumen
In this study, a two-axis solar tracking system with diffuse controller was designed to make the
best use of solar radiation, the proposed technology and innovation implemented a solar tracking
system of axes controlled by diffuse algorithm. This system allows the sun´s trajectory to be
followed throughout the entire day, to optimize capturing solar energy in comparison to fixedorientation
solar
panels,
which
are
the
most
commonly
used
in
or
country.
The
diffuse
control
is
implemented
via
a
platform
developed
in
LabVIEW.
This
control
involves
the
entry
of
two
signals
corresponding
to
the
position
error
with
both
latitude
an
azimuth
and
two
output
signals
generated
in
the
diffuse
control
to
control
two
stepper
motors
that
allow
for
these
errors
to
be
corrected,
resulting
in
continuous
monitoring
of
the
solar
path.
The
diffuse
system
corresponds
to
the
MIMO
system
(multiple
input,
multiple
output).
In
order
to
verify
the
hypothesis
that
a
solar
panel
located
on
a
two-axis
solar
tracker
makes
better
used
of
solar
energy
as
compared
to
a
fixed-orientation
panel,
a
prototype
was
constructed.
A
solar
panel
was
mounted
and
solar
readings
were
taken
for
three
days at fixed intervals. The measurements taken from the panel located on the tracking
system and the fixed panel were compared, then the nonparametric Mann-Whitney U test was
used, which compares medians and not means, as the distribution given by the sun does not have
a normal distribution. The proposed system had a higher yield with 10.66% solar energy uptake
obtained as compared to a fixed panel. In future research this present study can be taken as a
reference to investigate the application of other possible control algorithms, for example a
continuous PID controller, digital PID controller or a discrete controller.