Thermal stress reduced maximum power point tracking for two stages photovoltaic converters

Markus Andresen, Giampaolo Buticchi, Marco Liserre

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

5 Citations (Scopus)

Abstract

Several maximum power point tracking (MPPT) methods have been proposed to optimize the energy harvesting of photovoltaic systems. However, the optimization of the energy harvesting can produce extremely variable loading of the power semiconductors resulting in a decrease of the system lifetime. This work proposes a multi-objective MPPT for two-stage photovoltaic converters, where the semiconductor thermal stress is taken into account while searching for the maximum power point. A perturb and observe based algorithm which limits the positive temperature gradient and the maximum junction temperature of the power semiconductors of the boost converter is introduced and fully validated in the laboratory with a mission profile emulating variable irradiance conditions. The achievable lifetime improvement is evaluated against the reduction in the energy harvesting.

Original languageEnglish
Title of host publication2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2116-2123
Number of pages8
ISBN (Electronic)9781467371506
DOIs
Publication statusPublished - 27 Oct 2015
Externally publishedYes
Event7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015 - Montreal, Canada
Duration: 20 Sep 201524 Sep 2015

Publication series

Name2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015

Conference

Conference7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015
Country/TerritoryCanada
CityMontreal
Period20/09/1524/09/15

Keywords

  • Maximum power point tracking
  • PV systems
  • reliability
  • thermal cycling

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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