Control Study of Dual-BUCK Grid-Connected Inverter Based on Least Squares Algorithm

Author

Wang Bin ; Yi Ling-Zhi

Author_Institution

Coll. of Inf. Eng., Xiangtan Univ., Xiangtan, China

fYear

2011

fDate

25-28 March 2011

Firstpage

1

Lastpage

4

Abstract

Photovoltaic inverter´s well all-weather featured and inherent characteristic it requires unique high reliability and high efficiency. In this paper, Dual-BUCK grid-connected inverter as the research objective, for the present study SPWM control and hysteresis current control algorithm shortcomings, a least squares fixed switching frequency hysteresis current control algorithm for Dual-BUCK grid connected inverter control is proposed. Simulation and experimental results prove the feasibility of the algorithm and high reliability, switching frequency stability, high efficiency of the system, and the output current has the same frequency as grid voltage.

Keywords

PWM invertors; electric current control; least squares approximations; stability; SPWM control; dual-buck grid-connected inverter; grid voltage; hysteresis current control algorithm; least squares fixed switching frequency algorithm; switching frequency stability; Algorithm design and analysis; Current control; Fitting; Hysteresis; Inverters; Switches; Switching frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific

Conference_Location

Wuhan

ISSN

2157-4839

Print_ISBN

978-1-4244-6253-7

Type

conf

DOI

10.1109/APPEEC.2011.5749072

Filename

5749072