Control strategy for a four-wire T-type qZSI based PV system to support grids with unbalanced non-linear loads

V. Fernão Pires, Armando Cordeiro, Carlos Roncero-Clemente, J. F. Martins

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

3 Citations (Scopus)

Abstract

The existence of a high number of prosumers (producers and consumers) can affect positively the distribution grids through ancillary services. Usually prosumers use the generated energy from single and three-phase PV systems. However, since low voltage grids are normally affected by unbalanced loads, the use of a four-leg converter connected to a PV system can improve the power quality in these grids. Thus, this work will present a study in which a multilevel T-Type qZS-based PV system is used to support the grid with unbalanced non-linear loads. A control strategy able to deal with different conditions, such as, the existence of reactive power and/or harmonics in the grid is also proposed. To analyze the impact of the proposed system several simulation tests are presented. The results show a positive impact on the grid regarding this system.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728132020
DOIs
Publication statusPublished - Apr 2019
Event13th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2019 - Sonderborg, Denmark
Duration: 23 Apr 201925 Apr 2019

Conference

Conference13th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2019
CountryDenmark
CitySonderborg
Period23/04/1925/04/19

Keywords

  • Four-leg T-type Quasi-Z-source inverter
  • Multilevel converter
  • PV system
  • Reactive compensation
  • Unbalanced load

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