Title :
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
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;
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0448-7
DOI :
10.1109/IPEMC.2006.4778040
