Calculation of RMS Values for Variable Frequency Sinusoidal Signals, Using Phasors and Digital SAL and CAL Filters

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

Abstract

The accurate measurement of RMS values of voltage and current is crucial for the monitoring and protection of power systems and in general for electrical power distribution systems. The authors in this paper have developed an algorithm to calculate the RMS value of sinusoidal signals of varying frequency, by applying phasors obtained from digital filters SAL and CAL. In conditions in which the frequency of the grid varies, a phase shift is presented in the phasor of the grid voltage which is used for the design of a regulator that allows to obtain accurate RMS voltage values. The choice of the SAL and CAL digital filters is due to their low computational requirement, so they can be implemented in general-purpose microcontrollers.

Original languageEnglish
Title of host publicationProceedings of the 11th International Conference on Electronics, Communications and Networks, CECNet 2021
EditorsAntonio J. Tallon-Ballesteros
PublisherIOS Press BV
Pages292-299
Number of pages8
ISBN (Electronic)9781643682402
DOIs
StatePublished - 22 Dec 2021
Event11th International Conference on Electronics, Communications and Networks, CECNet 2021 - Virtual, Online, China
Duration: 18 Nov 202121 Nov 2021

Publication series

NameFrontiers in Artificial Intelligence and Applications
Volume345
ISSN (Print)0922-6389
ISSN (Electronic)1879-8314

Conference

Conference11th International Conference on Electronics, Communications and Networks, CECNet 2021
Country/TerritoryChina
CityVirtual, Online
Period18/11/2121/11/21

Keywords

  • Digital filters
  • Phasors
  • RMS
  • Regulators

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