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A Multi-Boost Converter for DC Capacitor Ripple Voltage Reduction to Enhance Irradiance Dependent PV-to-Grid Power Quality

  • Sukanta Roy
  • , Milad Behnamfar
  • , Anjan Debnath
  • , Mohd Tariq
  • , Arif Sarwat

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

1 Scopus citations

Abstract

The power electronics enriched grid tied Photo-voltaic power plants are increasingly tested for grid resiliency, power quality, and reliability. The energy balance implementation needs large DC bus capacitors, which ripple affects grid power quality as well as its own lifetime and system reliability. This work has proposed a multi-boost converter which is designed to track the maximum ripple, and hence provide its reduction in steps "online"for different levels of irradiance. The ripple voltage is translating to significant harmonics at grid end which is worsened by low values of irradiance. The simulation results show 50.4 % grid current reduction by 3.37 % ripple voltage reduction for low irradiance, and 16.4 % THD reduction by performing 1.53 % ripple voltage reduction for higher irradiance. This has effectively reduced voltage stress on DC bus capacitor offering better lifetime, hence increasing the reliability of the PV-inverter system.

Original languageEnglish
Title of host publication2023 IEEE International Conference on Energy Technologies for Future Grids, ETFG 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665471640
DOIs
StatePublished - 2023
Externally publishedYes
Event2023 IEEE International Conference on Energy Technologies for Future Grids, ETFG 2023 - Wollongong, Australia
Duration: Dec 3 2023Dec 6 2023

Publication series

Name2023 IEEE International Conference on Energy Technologies for Future Grids, ETFG 2023

Conference

Conference2023 IEEE International Conference on Energy Technologies for Future Grids, ETFG 2023
Country/TerritoryAustralia
CityWollongong
Period12/3/2312/6/23

Keywords

  • Boost converter
  • Harmonics
  • Power quality
  • PV inverter
  • Reliability

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