Large-scale PV systems with energy storage utilizing high-gain DC/DC converters

Hyuntae Choi, Mihai Ciobotaru, Vassilios G. Agelidis

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

1 Citation (Scopus)


The trend associated with the ever increasing size of grid-connected photovoltaic (PV) systems necessitates PV system configurations with higher power rating power processing converters and interconnection at a higher voltage level at the point of common coupling (PCC). Moreover, the inherent intermittency of the solar irradiation greatly affects both transient- and steady-state operation of these ever larger PV systems. This paper proposes a solution dealing with challenges of the large-scale PV system. The paper introduces a multistring PV system configuration based on a high-gain DC/DC converter and energy storage system (ESS). The interleaved structure of the high-gain DC/DC converter can easily handle the challenges regarding the power rating of converters and the requirement of higher voltage at PCC. Moreover, the ESS suppresses the power fluctuation of PV arrays and balances the difference between generated PV power and peak load demand. The simulation results of proposed system are presented to validate the performance of transient and steady state.
Original languageEnglish
Title of host publicationProceedings of the IEEE International Conference on Industrial Technology
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages7
ISBN (Electronic)9781479939398
ISBN (Print)9781479939404
Publication statusPublished - 9 Sep 2014
Externally publishedYes
Event2014 IEEE International Conference on Industrial Technology, ICIT 2014 - Busan, Korea, Republic of
Duration: 26 Feb 20141 Mar 2014


Conference2014 IEEE International Conference on Industrial Technology, ICIT 2014
Country/TerritoryKorea, Republic of


  • Batteries
  • Energy storage system
  • High-gain DC/DC converter
  • Large-scale PV system
  • Supercapacitors


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