Robust Predictive Control with Three-Vector Modulation Connected to the Power Grid

Abstract

Robust predictive control is presented in this article using a three-vector modulation for a grid-connected three-phase inverter. The aims of this article are proposing a robust controller that is able to deal with some variations of parameters that occur in practical systems and demonstrating the performance of the controller with experimental tests that change the inductance and consequently the parasitic resistance of the plant; the same controller can predictive the changes to obtain the optimal performance. The article also presents mathematical modeling for plants and controllers and a modulation method to solve the variable frequency problem. Experimental tests corroborate the expected results and validate the controller’s efficiency according to the control system analysis requirements and the IEEE 1547.2-2008 standard.

Conjunto de controle finito para o inversor conectado à rede aplicado na suavização de distorção

“…Operação com frequência de chaveamento fixa Como apresentado em [18], a técnica de controle proposta utiliza dois vetores ativos e um nulo de forma a manter frequência de chaveamento fixa. Este método de modulação facilita o projeto do filtro indutivo, consequentemente produzindo uma corrente com menor distorção [19].…”