Title :
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
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;
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
DOI :
10.1109/ICIEA.2008.4582614
