Sensorless control of a power converter for a cluster of small wind turbines

Agustí Egea-Alvarez, Oriol Gomis-Bellmunt, Antoni Sudrià-Andreu

Research output: Contribution to conference › Paper

Abstract

This article presents a sensorless control for small wind turbine clusters with a unique power converter. The proposed system consists in a wind farm connected to a back-to-back power converter that interface the wind farm and the AC grid. The wind farm is controlled by means of an optimized control based on a multimachine DTC (Direct Torque Control) system and a sensorless Maximum Power Point Tracker (MPPT) algorithm. This control system changes the wind farm electrical grid frequency in order to extract the maximum power. The used wind turbines are based on fixed-speed wind turbines equipped with Squirrel Cage Induction Generators (SCIG). The presented structure permits to reduce the number of converters and allows to accomplish the grid codes (fault ride through capability and reactive power support). It can be applied in wind turbine repowering projects, new onshore and offshore power plants or wind farms connected to a microgrid.

Original languageEnglish
Publication statusPublished - 1 Jan 2014
EventEuropean Wind Energy Association Conference and Exhibition 2014, EWEA 2014 - Barcelona, Spain
Duration: 10 Mar 2014 → 13 Mar 2014

Conference

ConferenceEuropean Wind Energy Association Conference and Exhibition 2014, EWEA 2014
CountrySpain
CityBarcelona
Period10/03/14 → 13/03/14

Keywords

  • multimachine DTC
  • repowering
  • sensorless MPPT
  • unique power converter
  • wind turbine
  • asynchronous generators
  • offshore installations

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    • Cite this

    Egea-Alvarez, A., Gomis-Bellmunt, O., & Sudrià-Andreu, A. (2014). Sensorless control of a power converter for a cluster of small wind turbines. Paper presented at European Wind Energy Association Conference and Exhibition 2014, EWEA 2014, Barcelona, Spain.