Digital PI current control for grid connected PV inverter

Author

Selvaraj, J. ; Rahim, N.A. ; Krismadinata, C.

Author_Institution

Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur

fYear

2008

fDate

3-5 June 2008

Firstpage

742

Lastpage

746

Abstract

This paper describes a digital proportional-integral (PI) control method for single-phase grid-connected photovoltaic (PV) system. The control algorithm is implemented in digital signal processor (DSP) TMS320F2812. A detail analysis of system control and mathematic formation of digital PI control is presented to show that this control method provides robust current regulation and operates at near to unity power factor. The PI current control method is implemented in a single-phase grid-connected PV inverter to convert DC power from the solar modules into AC power to be transferred to the grid. Simulation and experimental results are provided to demonstrate the effectiveness of the design.

Keywords

PI control; electric current control; invertors; photovoltaic power systems; power factor; power system control; robust control; signal processing; AC power; DC power; DSP TMS320F2812; current control; current regulation; digital proportional-integral control; digital signal processor; grid connected PV inverter; grid-connected photovoltaic system; power factor; robust control; solar module; Control systems; Current control; Digital control; Digital signal processors; Inverters; Photovoltaic systems; Pi control; Proportional control; Signal processing algorithms; Solar power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2008. ICIEA 2008. 3rd IEEE Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-1717-9

Electronic_ISBN

978-1-4244-1718-6

Type

conf

DOI

10.1109/ICIEA.2008.4582614

Filename

4582614