Multivariable 2-sliding mode control for a wind energy system based on a double fed induction generator

作者：Evangelista C A^*; Valenciaga F; Puleston P

来源：International Journal of Hydrogen Energy, 2012, 37(13): 10070-10075.

DOI：10.1016/j.ijhydene.2011.12.080

• Wind energy
• Sliding modes
• Multivariable systems
• Power control

The purpose of this paper is to present a control strategy using Multiple Input/Multiple Output (MIMO) Second Order Sliding Modes (SOSM) for a grid-connected variable-speed Wind Energy Conversion System (WECS). The latter is based on a Double Fed Induction Generator (DFIG) in a bidirectional configuration with slip power recovery. Its points of operation can be electronically controlled and, with them, two independent control objectives can be stated. Thus, a control is designed to maximize the energy captured from the wind and to regulate the stator reactive power, contributing to the compensation of the power factor according to grid requirements. %26lt;br%26gt;The proposed technique can be applied to nonlinear MIMO systems and allows to make a separate design for each component of the controller. For these designs the Super-Twisting algorithm is employed in this work, which possesses excellent properties regarding simplicity of implementation and online operation, and robustness against uncertainties and external disturbances. %26lt;br%26gt;Finally, representative simulation results are presented and analyzed.

• 出版日期2012-7