MPP tracking of PV based low voltage DC microgrid system with adaptive droop algorithm

Sijo Augustine, N. Lakshminarasamma, Mahesh K. Mishra, Sreekanth Thamballa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Several control methods are available in the literature for maximum power point (MPP) tracking, load sharing etc. in a photovoltaic (PV) based microgrid system. This paper proposes an adaptive droop based MPP tracking and load sharing of PV based dc microgrid. For this, proportional droop index (PDI) algorithm is introduced, which is a function of normalized current sharing difference and losses in the output side of the converters. This proposed control method calculates adaptive virtual resistance Rdroop, and allows the converter to operate at MPP. By fine tuning Rdroop values, the proposed method also eliminates poor voltage regulation issues of the conventional droop method. The detailed analysis and design procedure are explained and the effectiveness of proposed method is verified by detailed simulation analysis.

Original languageEnglish (US)
Title of host publication2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479979448
DOIs
StatePublished - Dec 14 2015
Externally publishedYes
Event42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States
Duration: Jun 14 2015Jun 19 2015

Other

Other42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
CountryUnited States
CityNew Orleans
Period6/14/156/19/15

Keywords

  • DC Microgrid
  • adaptive droop control
  • load sharing
  • maximum power point tracking (MPPT)
  • voltage control

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