Design of a direct connection scheme of supercapacitors to the grid-tied photovoltaic system

Yoga Sandi Perdana, S. M. Muyeen, Ahmed Al-Durra

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

Abstract

A maximum power-point tracking (MPPT) technique needs to be applied to the photovoltaic (PV) system in order to extract maximum possible power output under those varying conditions. The development of supercapacitor (SC) as high power storage device in recent years has created opportunity to replace electrolytic capacitor by SC as dc-link capacitor to provide power during fault ride-through (FRT) condition. However, due to its much bigger capacitance, the voltage dynamics of SC is much slower compared to electrolytic capacitor. Therefore, in this paper, a MPPT technique using a string of supercapacitors which is directly connected to the DC-link of a PV generation system is proposed. The direct connection is proposed to avoid one stage DC-DC power conversion to implement MPPT, so that the efficiency of the system is increased. The proposed direct connection of supercapacitors string configuration along with MPPT strategy is verified by simulation analysis using MATLAB/Simulink where real solar irradiance data is used.

Original languageBritish English
Title of host publicationIET Conference Publications
PublisherInstitution of Engineering and Technology
EditionCP694
ISBN (Electronic)9781785613005
ISBN (Print)9781785613005
DOIs
StatePublished - 2016
Event5th IET International Conference on Renewable Power Generation, RPG 2016 - London, United Kingdom
Duration: 21 Sep 201623 Sep 2016

Publication series

NameIET Conference Publications
NumberCP694
Volume2016

Conference

Conference5th IET International Conference on Renewable Power Generation, RPG 2016
Country/TerritoryUnited Kingdom
CityLondon
Period21/09/1623/09/16

Keywords

  • Direct connection
  • Grid-tied
  • MPPT
  • Photovoltaic (PV) system
  • Supercapacitors

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