Open AccessSensorless control of a power converter for a cluster of small wind turbines
Author(s) -
EgeaÀlvarez Agustí,
AragüésPeñalba Mónica,
GomisBellmunt Oriol,
RullDuran Joan,
SudriàAndreu Antoni
Publication year - 2016
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2015.0036
Subject(s) - wind power , offshore wind power , turbine , microgrid , power optimizer , control theory (sociology) , converters , ac power , power (physics) , grid , engineering , fault (geology) , automotive engineering , pitch control , wind speed , induction generator , power control , computer science , renewable energy , electrical engineering , control (management) , maximum power point tracking , inverter , voltage , meteorology , aerospace engineering , artificial intelligence , quantum mechanics , physics , mathematics , geometry , seismology , geology
This study presents a new sensorless control for small wind turbine clusters with a single power converter with a direct torque control algorithm. The proposed system consists of a wind farm connected to a back‐to‐back power converter that interfaces the wind farm with the AC grid. The studied wind turbines are based on fixed‐speed wind turbines equipped with squirrel cage induction generators with individual pitch control. 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). Furthermore, the generated active power can be reduced according to grid operator requirements. The presented control scheme can be applied to wind turbine repowering projects, wind farms connected to a microgrid, even, new small onshore and offshore power plants. The system performance and stability is studied and validated by means of dynamic simulations.