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Boost Converter Modelling of Photovoltaic Conditioning System Considering Input Capacitor  

Choi, Ju-Yeop (Dept. of Electrical Eng., Kwangwoon Univ.)
Lee, Ki-Ok (Dept. of Electrical Eng., Kwangwoon University)
Choy, Ick (Dept. of Information and Control Eng., Kwangwoon Univ.)
Song, Seung-Ho (Dept. of Electrical Eng., Kwangwoon University)
Yu, Gwon-Jong (Korea Institute of Energy Research)
Publication Information
Journal of the Korean Solar Energy Society / v.28, no.5, 2008 , pp. 85-95 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. 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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