Voltage synchronization scheme based on zero crossing detection for parallel connected inverters in AC microgrids

Author

Azrik, M. ; Ahmed, K.H. ; Finney, S.J. ; Williams, B.W.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

fYear

2012

fDate

28-31 May 2012

Firstpage

588

Lastpage

593

Abstract

A new voltage synchronization scheme is proposed for parallel connected inverters in AC microgrids. Instead of using the same reference voltage for all inverters, this scheme directly synchronizes the reference voltage of a connecting inverter to the point of common coupling voltage. Two contactors are used with each inverter module to enable the inverter to operate in 4 different modes. Voltage synchronization using this scheme requires no control interconnection among parallel connected inverters. Experimental results validate the practicality of the proposed synchronization schemes.

Keywords

contactors; distributed power generation; invertors; synchronisation; AC microgrids; common coupling voltage point; contactors; parallel connected inverters; reference voltage; voltage synchronization scheme; zero crossing detection; Contactors; Digital signal processing; Frequency synchronization; Inverters; Synchronization; Voltage measurement; Inverter; microgrid; voltage synchronization; zero crossing detection try;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics (ISIE), 2012 IEEE International Symposium on

Conference_Location

Hangzhou

ISSN

2163-5137

Print_ISBN

978-1-4673-0159-6

Electronic_ISBN

2163-5137

Type

conf

DOI

10.1109/ISIE.2012.6237153

Filename

6237153