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A adaptive sliding mode observer was proposed for the speed identification of a sensor-less vector control system of doubly fed wind turbine. This strategy combines adaptive control with variable structure control, and selects the rotor currents as model outputs, and formulates a slide mode surface according current error to get speed observer expression. By using small signal model, the convergence...
Doubly-fed induction generator (DFIG) has been widely used in the variable-speed constant-frequency (VSCF) wind energy generation system. In traditional vector control scheme, the reduced DFIG model with both stator flux transients and the effect of flux saturation neglected was employed to simplify the rotor current inner-loop controllers processed by standard PI regulation, which can perform well...
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