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IJSTR >> Volume 8 - Issue 1, January 2019 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Simulation Of A SEPIC DC-DC Converter Using Perturb And Observe And Fuzzy Logic Control

[Full Text]



Goshwe, N.Y, Igwue G.A, Kureve, D.T.



Perturb and Observe, Fuzzy Logic Controller, SEPIC, Photo-voltaic (PV) system, Irradiance and Temperature



Perturb and observe (P & O) and fuzzy logic (FLC) controller based techniques for switching a single-ended primary-inductor (SEPIC) converter for harvesting power from a photo-voltaic (PV) panel is presented. The techniques are compared at varying irradiances of 1000, 900, 700 and 500 W/m2 and varying temperatures of 30, 25, 20 and 18 degrees respectively. The results show that the SEPIC converter using P &O and FLC has a maximum voltage output of 58.76 V and 58.70 V; The Solar power output is maximum at 407.8 W and 400.7 W for irradiance of 1000 W/m2 at 18oC respectively. The converter output voltage using P & O has oscillations which are eliminated using the fuzzy logic controller.



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