Modelling and stability analysis for a variable speed DC tidal/wind turbines with MPPT in low voltage DC microgrid

Walid Nassar, Olimpo Anaya-Lara

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

1 Citation (Scopus)
19 Downloads (Pure)

Abstract

DC Microgrid is a new candidate for Multi-Purpose Platforms (MPP) which highly supported by the international community for sustainably exploiting our oceans. Considering DC-systems for the MPP requires all renewable energy sources to be interfaced to a DC-bus. Wind turbines as proven developed energy for offshore use is a crucial energy source for MPP. Normally, a wind turbine in a DC-environment uses a diode rectifier for interfacing to the grid and a DC-DC boost or buck converter for extracting maximum power. Previous studies included wind turbine in a DC-microgrid did not analyze the turbine stability with wind variations. Moreover, tidal turbines, as an immature technology, are rarely considered in such DC-systems. So, this paper provides a modelling and stability analysis for a wind/tidal turbines based Permanent Magnet Synchronous Generator (PMSG). A linearized small-signal model is derived for a wind/tidal turbines based PMSG and boost converter. Two control loops are used for speed and current control. Stability analysis shows that the controller can effectively keep the system stable under wind/tidal speed variations. Simulation analysis is carried out to shows the effectiveness of the controller at various speeds considering tidal and wind turbines.
Original languageEnglish
Title of host publication2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)
Place of PublicationPiscataway, NJ
PublisherIEEE
Number of pages6
ISBN (Electronic)9781665402644
ISBN (Print)9781665402651
DOIs
Publication statusPublished - 16 Feb 2022
EventThe IEEE International Conference on Advanced Electrical Equipment and Reliable Operation
- China, Beijing, China
Duration: 16 Oct 202117 Oct 2021

Conference

ConferenceThe IEEE International Conference on Advanced Electrical Equipment and Reliable Operation
Abbreviated titleIEEE IAEERO 2021
Country/TerritoryChina
CityBeijing
Period16/10/2117/10/21

Keywords

  • boost converter
  • wind turbine
  • DC microgrid
  • tidal turbine
  • modelling
  • stability analysis
  • MPPT

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