Output Control of DFIG-based Wind Power Generation for Improving Transient Stability and Small Signal Stability

Abstract

The number of Doubly Fed Induction Generator (DFIG)-based wind power generator is increasing because of its good efficiency and controllability. Power Oscillation Damping control for power system stabilization is expected to be implemented in the DFIG, and a few works have so far discussed it. This paper proposes a control parameter optimization method considering transient response to improve not only small signal stability but also transient stability. Moreover, to improve both transient and small signal stability, a combined control method with switching control is proposed. The effectiveness of proposed method is confirmed by eigenvalue analyses and time domain simulations.