A universal droop-based control strategy for single-phase two-stage PV inverters

Dong Lei, Tian Haolei, Xiao Furong

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

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Abstract

Droop control is widely used in distributed generators for relating their terminal parameters to power generation. These generators are usually assumed to have enough capacities for supplying the required power. This is however not always true, especially with renewable sources with no or insufficient storage. To deal with this issue, an improved droop-based control is proposed for single-phase two-stage PV inverters. With this method, the PV inverter can operate in either MPPT mode or dispatched power mode when connected to the grid. Also, this control method can be used for realizing the operational control in islanded mode without major control reconfiguration. Regardless of the operating mode, the dc-bus voltage can be well regulated even in the presence of PV power fluctuations due to solar irradiance variations in this study. Finally, the proposed droop-based control method is demonstrated through simulation and experimental results.

Original languageEnglish
Title of host publicationProceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6369-6374
Number of pages6
ISBN (Electronic)9781538611272
DOIs
Publication statusPublished - 15 Dec 2017
Event43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017 - Beijing, China
Duration: 29 Oct 20171 Nov 2017

Publication series

NameProceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
Volume2017-January

Conference

Conference43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017
Country/TerritoryChina
CityBeijing
Period29/10/171/11/17

Keywords

  • Droop control
  • Grid-tied operation
  • Islanded operation
  • PV inverter
  • Seamless transfer

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Lei, D., Haolei, T., & Furong, X. (2017). A universal droop-based control strategy for single-phase two-stage PV inverters. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (pp. 6369-6374). (Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society; Vol. 2017-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IECON.2017.8217109