FPGA Implementation of MPPT Using Variable Step-Size P&O Algorithm for PV Applications

Author

Khaehintung, Noppadol ; Wiangtong, Theerayod ; Sirisuk, Phaophak

Author_Institution

Dept. of Control & Instrum. Eng., Mahanakorn Univ. of Technol., Bangkok

fYear

2006

fDate

Oct. 18 2006-Sept. 20 2006

Firstpage

212

Lastpage

215

Abstract

This paper describes FPGA implementation of a maximum power point tracking (MPPT) for photovoltaic (PV) applications. By slightly modifying the original algorithm, an improved variable step-size P&O algorithm is realized and efficiently implemented using a hardware description language (VHDL). Subsequently, the new MPPT algorithm integrated with a solar-powered battery charging system is implemented on the XC2C384 FPGA without external sensor unit requirement. Experimental results with a commercial PV array show that the proposed algorithm outperforms the conventional controller in terms of tracking speed and mitigation of fluctuation output power in steady state operation. The overall system efficiency is well above 96%

Keywords

battery chargers; field programmable gate arrays; hardware description languages; photovoltaic power systems; solar power stations; MPPT; PV applications; VHDL; XC2C384 FPGA; external sensor unit requirement; hardware description language; maximum power point tracking; photovoltaic applications; solar-powered battery charging system; steady state operation; variable step-size P&O algorithm; Application software; Artificial neural networks; Batteries; Field programmable gate arrays; Microcontrollers; Photovoltaic systems; Power engineering and energy; Power generation; Signal processing algorithms; Solar power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technologies, 2006. ISCIT '06. International Symposium on

Conference_Location

Bangkok

Print_ISBN

0-7803-9741-X

Electronic_ISBN

0-7803-9741-X

Type

conf

DOI

10.1109/ISCIT.2006.340033

Filename

4141544