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

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

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

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

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper › peer-review

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 language	English
Publication status	Published - 1 Jan 2014
Event	European Wind Energy Association Conference and Exhibition 2014, EWEA 2014 - Barcelona, Spain Duration: 10 Mar 2014 → 13 Mar 2014

Conference

Conference	European Wind Energy Association Conference and Exhibition 2014, EWEA 2014
Country	Spain
City	Barcelona
Period	10/03/14 → 13/03/14

Keywords

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

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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.",

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N2 - 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.

AB - 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.

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