Practical Implementation of Delayed Signal Cancellation Method for Phase-Sequence Separation
Practical Implementation of Delayed Signal Cancellation Method for Phase-Sequence Separation
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DOI：
10.1109/tpwrd.2006.881469
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发表时间：
2007
影响因子：
4.4
通讯作者：
Jan R. Svensson;M. Bongiorno;Ambra Sannino
中科院分区：
文献类型：
--
作者：
Jan R. Svensson;M. Bongiorno;Ambra Sannino
本文研究了一种在线检测三相量正负序分量的方法，即延迟信号抵消（DSC）方法。研究了DSC方法在计算机控制系统中实际应用中出现的问题。推导了非理想离散化引起的检测误差表达式，并对计算结果进行了实验验证。提出并验证了两种减小检测误差的方法。给出的表达式和提出的减小检测误差的方法也适用于电网频率变化的情况
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