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Boost Converter Modeling of Photovoltaic Conditioning System for MPPT  

Choi, Ju-Yeop (Dept. of Electrical Eng., Kwangwoon Univ.)
Choy, Ick (Dept. of Information and Control Eng., Kwangwoon Univ.)
Song, Seung-Ho (Dept. of Electrical Eng., Kwangwoon Univ.)
An, Jin-Ung (Daegu Gyeongbuk Institute of Science & Technology)
Lee, Dong-Ha (Daegu Gyeongbuk Institute of Science & Technology)
Publication Information
Journal of the Korean Solar Energy Society / v.29, no.6, 2009 , pp. 1-13 More about this Journal
Abstract
Photovoltaic conditioning systems normally use a maximum power point tracking (MPPT) technique to deliver the highest possible power to the load continuously when variations occur in the insolation and temperature. A unique method of tracking the maximum power points (MPPs) and forcing the boost converter system to operate close to these points is presented through deriving small-signal model and transfer function of boost converter considering input capacitor. This paper aims at modeling boost converter including fairly large equivalent series resistance(ESR) of input reservoir capacitor by state-space-averaging method and PWM switch model and compares both methods using Bode plots. In the future, properly designed controller for compensation will be constructed in 3kw real system for maximum photovoltaic power tracking control.
Keywords
Converter; Inverter; MPPT; State-Space-Averaging;
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  • Reference
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