Comparative study between P&O and Current Compensation method for MPPT of PV energy system

Author

Bal, Satarupa ; Babu, B. Chitti

Author_Institution

Dept. of Electr. Eng., Nat. Inst. of Technol., Rourkela, India

fYear

2012

fDate

16-18 March 2012

Firstpage

1

Lastpage

6

Abstract

This paper presents an accurate mathematical modeling of photovoltaic (PV) array accomplished by a simplified single-diode equivalent circuit. A typical 19.8 W module is employed to investigate the I-V and P-V characteristics of PV array under non-uniform temperature and irradiation conditions. The proposed model is used for developing and evaluating the techniques for maximum power point tracking (MPPT). This paper adopts a small-signal analysis of a photovoltaic (PV) array with dc-dc boost converter with resistive load to extract maximum power. For that, Perturb and Observe (P & O) method and Current Compensation method are realized through switching pulse generation to dc-dc boost converter. Further, meaningful comparison has been made between these two methods with respect to the boosted power output and the amount of energy extracted from the photovoltaic panel. These systems are modeled and simulated in a user-friendly MATLAB/Simulink environment.

Keywords

compensation; diodes; electric current; equivalent circuits; mathematical analysis; maximum power point trackers; pulse generators; radiation effects; solar cell arrays; DC-DC boost converter; I-V characteristics; MPPT; P&O method; P-V characteristics; PV energy system; current compensation method; irradiation conditions; mathematical modeling; maximum power extraction; maximum power point tracking; nonuniform temperature; perturb and observe method; photovoltaic array; photovoltaic panel; power 19.8 W; single-diode equivalent circuit; small-signal analysis; switching pulse generation; user-friendly MATLAB-Simulink environment; Arrays; Inductors; Mathematical model; Radiation effects; Switches; Temperature; Voltage control; Current Compensation Method; Maximum Power Point Tracking (MPPT); Perturb and Observe Method; Photovoltaic (PV) array; dc-dc boost converter;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering and Systems (SCES), 2012 Students Conference on

Conference_Location

Allahabad, Uttar Pradesh

Print_ISBN

978-1-4673-0456-6

Type

conf

DOI

10.1109/SCES.2012.6199023

Filename

6199023