%0 Journal Article
%T Boost Chopper Behaviors in Solar Photovoltaic System
%A Sameer Khader
%A Abdel-Karim Daud
%J Smart Grid and Renewable Energy
%P 31-52
%@ 2151-4844
%D 2021
%I Scientific Research Publishing
%R 10.4236/sgre.2021.123003
%X <span style=\"font-family:Verdana;\">This
paper investigates the behaviors of Boost DC Chopper used in Photovoltaic
energy systems where the solar irradiation changes during the day time causing
current and voltage changes. Varying the solar irradiation causes output
chopper voltage changes in order to keep working at maximum extracted solar
power. The chopper voltage changes leading to variable duty cycle operation of
chopper switch and causes </span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">a </span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">significant change in switch losses in terms of the dissipated power. In
addition to that the chopper behaviors are studied when the chopper voltage is
boosting up to a predetermined reference value leading to </span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">a </span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">significant
change in chopper current, voltage, duty cycle and occurred losses. A
mathematical model for chopper performances and switch losses </span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">is</span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"> derived,
and a simulation model using Matlab/ Simulink platforms is conducted to follow
the chopper behaviors. Simulation results for concreteSUNPOWER panel type
SPR-315E-WHT-D with 315 Watts peak indicates that during the daylight time
transistors</span></span></span><span><span><span style=\"font-family:&quot;\"> </span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">are exposed to complicated change</span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\">s</span></span></span><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"><span style=\"font-family:Verdana;\"> in their
current, voltage and dissipated power. Furthermore changing the output voltage
according to load requirements causes heavy stress on the transistor in terms
of current, oscillations and losses as well. Simulation results show that there
are optimized
%K DC-DC Converters
%K Photovoltaic Source
%K PWM
%K Buck-Boost
%K Boost Converters
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=108679