access icon free Control of doubly-fed induction generator for wind energy in network context

© The Institution of Engineering and Technology
Received 14/02/2013, Accepted 10/06/2013, Revised 24/05/2013, Published 18/09/2013

This study investigates a novel control methodology for the doubly-fed induction generators (DFIGs) in the real situation of wind energy generation when the machine is connected to a power system. The machine speed, DC voltage, active and reactive grid powers have been controlled using a reduced-order representation of the DFIG coupled to the grid. This framework allows several methods for the synthesis of the regulator. A state-feedback controller is designed based on the linear quadratic method. This regulator is tested in comparison with the standard vector control approach and the more recent flux magnitude angle control via simulations performed with Simulink and SimPowerSystem Toolbox of MATLAB.

Inspec keywords: linear quadratic control; power grids; asynchronous generators; machine vector control; wind power plants; reactive power control; feedback

Other keywords: machine speed; active grid power control; SimPowerSystem Toolbox; state-feedback controller; doubly-fed induction generator control; standard vector control approach; wind energy generation system; flux magnitude angle control; DC voltage; linear quadratic method; reactive grid power control; DFIG; reduced-order representation

Subjects: Control of electric power systems; Optimal control; Asynchronous machines; Wind power plants; Power and energy control; Power system control

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