Practical implementation of delayed signal cancellation method for phase-sequence separation
Journal article, 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

Author

Jan Svensson

ABB Corporate Research Center

Massimo Bongiorno

Chalmers, Energy and Environment, Electric Power Engineering

Ambra Sannino

Chalmers, Energy and Environment

IEEE Transactions on Power Delivery

0885-8977 (ISSN)

Vol. 22 1 18-26

Subject Categories

Other Engineering and Technologies not elsewhere specified

DOI

10.1109/TPWRD.2006.881469

More information

Created

10/6/2017