Improved variable step size P&O MPPT algorithm for PV systems

Xavier Serrano-Guerrero, José González-Romero, Xavier Cárdenas-Carangui, Guillermo Escrivá-Escrivá

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

Abstract

Algorithms for the maximum power point tracking MPP (Maximum Power Point), seek to maximize the delivered power of a photovoltaic panel. The Perturb and Observe (P&O) algorithm is the more used due to simplicity, however it is not the most efficient due to the perturbation step is fixed, at higher the size step fastest the MPP will be reached, but there would be a high steady state error; if the size step is low there would be less steady state error, but the MPP tracking became slow. Other well know method is the algorithm of Conductance Incremental (IC), in this method the step depends of the power variation versus the voltage. The variable step for P&O is more efficient for short atmospheric variations with less oscillations in the tracking and the variable step for CI is more efficient for big atmospheric variations with a fast MPP tracking. In this paper the 2 methods are combine to reduce oscillations and for a fast tracking for big and short irradiance variations.

Original languageEnglish
Title of host publicationProceedings - 2016 51st International Universities Power Engineering Conference, UPEC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781509046508
DOIs
StatePublished - 2 Jul 2016
Event51st International Universities Power Engineering Conference, UPEC 2016 - Coimbra, Portugal
Duration: 6 Sep 20169 Sep 2016

Publication series

NameProceedings - 2016 51st International Universities Power Engineering Conference, UPEC 2016
Volume2017-January

Conference

Conference51st International Universities Power Engineering Conference, UPEC 2016
CountryPortugal
CityCoimbra
Period6/09/169/09/16

Keywords

  • Incremental Conductance (IC)
  • Maximum Power Point (MPP)
  • Maximum Power Point Tracking (MPPT)
  • Perturb and Observed (P&O)
  • Photovoltaic Systems (PV)
  • Variable step size

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