Two Families of Sliding Mode Controllers for a Doubly-Fed Induction Generator in an Isolated Generation System

The doubly fed induction generators (DFIG) have been recognized as the dominant technology used in wind power generation systems with the rapid development of wind power. However, continuous operation of DFIG may cause a serious wind turbine generators tripping accident, due to destructive over-current in the rotor winding which is caused by the power system fault or inefficient fault ride-through (FRT) strategy. A new rotor current control scheme in the rotor-side converter (RSC) ispresented to enhance FRT capacities of grid-connected DFIG. Due to the strongly nonlinear nature of DFIG and insensitive to DFIG parameter’s variations, a novel sliding mode controller was designed. The controller combines extended state observer (ESO) with sliding model variable structure control theory. The simulation is carried out to verify the effectiveness of the proposed control approach under various types of grid disturbances. It is shown that the proposed controller provides enhanced transient features than the classic proportional-integral control. The proposed control method can effectively reduce over-current in the RSC, and the transient pulse value of electromagnetic torque is too large under power grid fault.

show abstract

Two Families of Sliding Mode Controllers for a Doubly-Fed Induction Generator in an Isolated Generation System

Abstract: In this paper the authors consider the Sliding Mode Control (SMC) of a Doubly Fed Induction

Cited by 2 publications

References 6 publications

Fault isolation based in Structural Analysis and EWMA of the set DFIG/Back-to-Back converter of a Wind Energy Conversion System

Fault isolation based in Structural Analysis and EWMA of the set DFIG/Back-to-Back converter of a Wind Energy Conversion System

Rotor Current Control of DFIG for Improving Fault Ride – Through Using a Novel Sliding Mode Control Approach

Contact Info

Product

Resources

About