Implementation of Grid-connected Single-phase Inverter Based on FPGA

Author

Jung, Eunsoo ; Sul, Seung-Ki

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul

fYear

2009

fDate

15-19 Feb. 2009

Firstpage

889

Lastpage

893

Abstract

Exploiting the capability of an FPGA, a digital current controller of a single-phase inverter for grid interface is designed and implemented. A proportional and resonant (PR) controller realized in a parallel structure in the FPGA is used to reduce the harmonic current to AC grid. The harmonic compensators based on the PR controller are implemented up to the 19^th order. The size of the LCL filter has been extremely reduced because the switching frequency is increased to 100 kHz. The validity of the FPGA based grid-connected single-phase inverter has been evaluated by experimental results.

Keywords

control system synthesis; electric current control; field programmable gate arrays; invertors; power grids; power harmonic filters; power system interconnection; switching convertors; FPGA; current controller; grid interface; grid-connected single-phase inverter; harmonic compensators; harmonic current; proportional-resonant controller; single-phase inverter; switching frequency; Control systems; Field programmable gate arrays; Harmonic distortion; Inverters; Power conversion; Power harmonic filters; Proportional control; Resonance; Switching frequency; Voltage; FPGA; PR controller; grid-connected; single-phase inverter;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE

Conference_Location

Washington, DC

ISSN

1048-2334

Print_ISBN

978-1-4244-2811-3

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2009.4802767

Filename

4802767