A State Equation Model of a Single-Phase Grid-Connected Inverter Using a Droop Control Scheme With Extra Phase Shift Control Action

Author

Avelar, Henrique José ; Parreira, Wanderley Alves ; Vieira, João Batista, Jr. ; De Freitas, Luiz Carlos Gomes ; Coelho, Ernane Antônio Alves

Author_Institution

Dept. of Electron., Centro Fed. de Educ. Tecnol. de Minas Gerais, Araxa, Brazil

Volume

59

Issue

3

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

1527

Lastpage

1537

Abstract

This paper presents a state equation model of a single-phase pulsewidth modulation inverter connected to the grid, using frequency-active power and voltage-reactive power droops, including an extra phase shift loop. The influence of the control parameters on the system´s behavior can be studied using the proposed state equation model, which was obtained from the small-signal analysis. The model´s results are compared with numerical simulations of the nonlinear system to verify their accuracy. Comparisons are also made with experimental data reported in the literature.

Keywords

PWM invertors; bridge circuits; frequency control; power supply quality; power system harmonics; reactive power control; voltage control; droop control scheme; extra phase shift control action; frequency active power droop; nonlinear system; single phase grid connected inverter; single phase pulsewidth modulation inverter; small signal analysis; state equation model; voltage reactive power droop; Active filters; Damping; Inverters; Mathematical model; Polynomials; Reactive power; Frequency and voltage droops; parallel connection; phase feedback; sinusoidal pulsewidth modulation inverters; small-signal analysis;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2011.2163372

Filename

5967902