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Boost Chopper Behaviors in Solar Photovoltaic System

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dc.contributor.advisor Khader, Sameer
dc.contributor.author Khader, Sameer
dc.contributor.author Daud, Abdel-Karim
dc.date.accessioned 2021-05-04T08:02:57Z
dc.date.accessioned 2022-05-22T08:54:41Z
dc.date.available 2021-05-04T08:02:57Z
dc.date.available 2022-05-22T08:54:41Z
dc.date.issued 2021-03-31
dc.identifier.issn 2151-4844
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/8312
dc.description.abstract 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 a 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 a significant change in chopper current, voltage, duty cycle and occurred losses. A mathematical model for chopper performances and switch losses is 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 are exposed to complicated changes 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 values of irradiation, chopper voltage and duty cycle where the transistor losses are minimized. In addition to that, projecting the transistor losses over the daylight time at a given irradiation rate shows how these losses vary among the year, and the amount of energy dissipated across the main chopper switch which is around 2970 Whr/yr for the present case. Furthermore, the conducted simulation also shows the occurred in the transistor behaviors when solar irradiation changes, and can be serving for further studies. en_US
dc.language.iso en_US en_US
dc.publisher Smart Grid and Renewable Energy Journal en_US
dc.relation.ispartofseries Volume 12 Issue;31-52
dc.subject DC-DC Converters, Photovoltaic Source, PWM, Buck-Boost, Boost Converters en_US
dc.title Boost Chopper Behaviors in Solar Photovoltaic System en_US
dc.type Article en_US

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