Title :
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
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;
Conference_Titel :
Industrial Electronics (ISIE), 2012 IEEE International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4673-0159-6
Electronic_ISBN :
2163-5137
DOI :
10.1109/ISIE.2012.6237153
