A Single-Phase Grid-Connected Inverter System With Zero Steady-State Error

Author

Xiaoqiang, Guo ; Qinglin, Zhao ; Weiyang, Wu

Author_Institution

Dept. of Electr. Eng., Yanshan Univ., Hebei

Volume

1

fYear

2006

fDate

14-16 Aug. 2006

Firstpage

1

Lastpage

5

Abstract

A single-phase grid-connected inverter system with a novel current control strategy is presented in this paper. The controller consists of a proportional regulator and a new type of resonant regulator. Compared with traditional PI control methods, the P+resonant (PR) control can introduce an infinite gain at the fundamental frequency and hence can achieve zero steady-state error. A more practical quasi-PR controller is used based on theoretical analysis. In this paper, a step by step procedure for designing the quasi-PR controller is proposed and verified by experiments. Theoretical analysis and experimental results of an experimental prototype verified the high performance of the proposed system in both the sinusoidal reference tracking and the disturbance rejection

Keywords

electric current control; invertors; P+resonant control; current control; disturbance rejection; proportional regulator; quasiPR controller; resonant regulator; single-phase grid-connected inverter system; sinusoidal reference tracking; zero steady-state error; Current control; Error correction; Frequency; Inverters; Performance analysis; Pi control; Proportional control; Regulators; Resonance; Steady-state; bilinear transformation; grid-connected inverter; harmonic impedance; quasi-PR controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International

Conference_Location

Shanghai

Print_ISBN

1-4244-0448-7

Type

conf

DOI

10.1109/IPEMC.2006.4778040

Filename

4778040