Title :
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
fDate :
3/1/2012 12:00:00 AM
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;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2011.2163372
