Practical implementation of delayed signal cancellation method for phase-sequence separation
Artikel i vetenskaplig tidskrift, 2007

In this paper, the use of a method for online detection of positive- and negative-sequence components of three-phase quantities, named the delayed signal cancellation (DSC) method, is investigated. Problems that arise in practical implementation of the DSC method in computer-controlled systems are investigated. Expressions of the detection error due to nonideal discretization are derived and calculations are verified experimentally. Two methods for reducing the detection error are presented and verified. It is also shown that the given expressions and proposed methods for reducing the detection errors can also be applied to the case of grid frequency variations.

filter

measurement

voltage-source converter

unbalance

sequence detection

SYSTEM

control

Författare

Jan Svensson

ABB Corporate Research Center

Massimo Bongiorno

Chalmers, Energi och miljö, Elkraftteknik

Ambra Sannino

Chalmers, Energi och miljö

IEEE Transactions on Power Delivery

0885-8977 (ISSN)

Vol. 22 1 18-26

Ämneskategorier

Övrig annan teknik

DOI

10.1109/TPWRD.2006.881469

Mer information

Skapat

2017-10-06