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

E. F.C. Grabovski, M. L. Heldwein, S. A. Mussa

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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 pre-filter stage to eliminate most of the harmonics to achieve fast estimation response and high rejection of harmonic distortions.

Original languageEnglish
Title of host publication2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference, COBEP/SPEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728141800
DOIs
StatePublished - Dec 2019
Externally publishedYes
Event15th IEEE Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference, COBEP/SPEC 2019 - Santos, Brazil
Duration: 1 Dec 20194 Dec 2019

Publication series

Name2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference, COBEP/SPEC 2019

Conference

Conference15th IEEE Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference, COBEP/SPEC 2019
Country/TerritoryBrazil
CitySantos
Period1/12/194/12/19

Keywords

  • Frequency estimation
  • adaptive filtering
  • signal processing

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