Digital Synchronization Method for Three Phase Systems

Author

Petrocelli, R. ; Maestri, S. ; Benedetti, Mauro ; Retegui, R. Garcia

Author_Institution

Univ. Nacional de Mar del Plata, Mar del Plata

fYear

2007

fDate

3-5 Oct. 2007

Firstpage

1

Lastpage

4

Abstract

This article presents a digital signal processing method designed to obtain utility grid synchronism. This method is based on varying sampling frequency so as to generate sampling pulses in phase and at a frequency multiple of the main frequency. It is suitable for obtaining the reference in on-line power converters and for measuring harmonics in the utility grid. Even though it operates with a variable sampling frequency, a model in z-transform space is developed and contrasted with simulations. Design equations for a close loop controller which produces a response with no overshot are also developed herein.

Keywords

Z transforms; closed loop systems; power convertors; power grids; signal sampling; synchronisation; close loop controller; digital signal processing; digital synchronization method; harmonic measurement; on-line power converters; sampling pulses; three phase systems; utility grid; utility grid synchronism; variable sampling frequency; z-transform space; Design methodology; Digital signal processing; Frequency synchronization; Power measurement; Power system harmonics; Process design; Pulse generation; Sampling methods; Signal design; Signal sampling; Grid synchronization; harmonic measurement; power quality; power systems; three phase-locked loop; variable sampling rate;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing, 2007. WISP 2007. IEEE International Symposium on

Conference_Location

Alcala de Henares

Print_ISBN

978-1-4244-0829-0

Electronic_ISBN

978-1-4244-0830-6

Type

conf

DOI

10.1109/WISP.2007.4447640

Filename

4447640