Three-Phase Adaptive Frequency Estimator with a Delayed Signal Cancellation Pre-Filter Under Heavily Distorted Grid Conditions

被引：0
|
作者：
Grabovski, E. F. C. [1 ]
Heldwein, M. L. [1 ]
Mussa, S. A. [1 ]
机构：
[1] Fed Univ Santa Catarina UFSC, Dept Elect & Elect Engn EEL, Power Elect Inst INEP, POB 5119, BR-88040970 Florianopolis, SC, Brazil
来源：
2019 IEEE 15TH BRAZILIAN POWER ELECTRONICS CONFERENCE AND 5TH IEEE SOUTHERN POWER ELECTRONICS CONFERENCE (COBEP/SPEC) | 2019年
关键词：
Frequency estimation; signal processing; adaptive filtering; IMPLEMENTATION; SYSTEM;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A reliable and precise frequency detection algorithm is useful for different control strategies, especially on microgrid and aerospace applications. The widely -linear adaptive frequency estimator is based on the Augmented Complex Least Mean Square Filter and, thus inherits its fast dynamic response. However, it presents a high susceptibility to input noise, which might present an unexpected behaviour under distorted grid conditions. Therefore, this work proposes a Delayed Signal Cancellation prefilter stage to eliminate most of the harmonics to achieve fast estimation response and high rejection of harmonic distortions.
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页数：6
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