Title :
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
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;
Conference_Titel :
Engineering and Systems (SCES), 2012 Students Conference on
Conference_Location :
Allahabad, Uttar Pradesh
Print_ISBN :
978-1-4673-0456-6
DOI :
10.1109/SCES.2012.6199023
