Design of a novel MPPT algorithm based on the two stage searching method for PV systems under partial shading

Sonia Veerapen, Huiqing Wen, Yang Du

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

23 Citations (Scopus)

Abstract

When photovoltaic panels are non-uniformly irradiated, they experience shadowing effect and the power against voltage curve will demonstrate multiple peaks which cause maximum power point tracking method to become challenging. A method often used to track the real peak is the two stage searching method which uses a ratio of the open circuit voltage. However, this method has some shortcomings especially at heavy shadowing condition where it can easily miss the real peak and demonstrate a slow tracking speed. Hence, a novel method to track the GMPP based on the two stage open circuit voltage method was proposed in this paper with the aim of improving the speed and accuracy of the tracker. The Simulink/SimPowerSystems environment is used to model a photovoltaic system with bypass diodes which can take both temperature and irradiance as inputs to be able to simulate different shading patterns for the implementation of the tracking algorithm. The response of the system was compared with other models proposed in previous papers to validate the system and it was found that the system could most accurately model the characteristic of the panel. Afterwards, the maximum power point tracking algorithm was tested and compared with the above-mentioned two stage searching method. It was observed that the new method was able to reach the real peak faster.

Original languageEnglish
Title of host publication2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1494-1498
Number of pages5
ISBN (Electronic)9781509051571
DOIs
Publication statusPublished - 25 Jul 2017
Event3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017 - Kaohsiung, Taiwan, Province of China
Duration: 3 Jun 20177 Jun 2017

Publication series

Name2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017

Conference

Conference3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period3/06/177/06/17

Keywords

  • Global Maximum Power Point Tracking
  • Open Circuit Voltage
  • Photovoltaic
  • Shadowing

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