This study presents the auxiliary damping control with the reactive power loop on the rotor-side converter of doubly-fed induction generator (DFIG)-based wind farms to depress the sub-synchronous resonance oscillations in nearby turbogenerators. These generators are connected to a series capacitive compensation transmission system. First, the damping effect of the reactive power control of the ...

This paper expands a nonlinear fuzzy based control strategy applied to a variable speed Wind Energy Conversion System WECS founded on Doubly Fed Induction Generator DFIG. As power network assists a high wind energy emergence, the studied WECS represents a wind farm WF of 500MW connected to the Grid and dispatched in such a way that it can contribute to grid frequency control with delivering a s...

Abstract -This paper presents a generalized model for load frequency control (LFC) design in a hybrid multi-area deregulated power system including physical constraints. Renewable energy source named doubly fed induction generator (DFIG) based wind energy source is integrated into the system that provides the modified emulating inertial control and reduces the deviations in frequency and tie-li...

With the increase of wind turbine dimension and capacity, the wind turbine structures are subjected to prominent loads and fatigue which would reduce the lifetime of wind turbines. Individual pitch control (IPC) is used in this paper to attenuate the blade root bending moment and the tilt and yaw moments and fatigue. The loading transfer from rotational coordinate system to the fixed coordinate...

Received Mar 12, 2014 Revised May 21, 2014 Accepted Jun 20, 2014 In this paper, decouple PI control for output active and reactive powers which is the common control technique for power converter of Doubly Fed Induction Generator (DFIG) is presented. But there are some disadvantages with this control method like uncertainty about the exact model, behavior of some parameters or unpredictable win...

This study proposes a fuzzy sliding mode control strategy to realize wind energy conversion optimization based on doubly-fed induction generator (DFIG). Its operational points in partial load zone can be electronically controlled. Chattering in wind energy conversion sliding mode control system is greatly alleviated based on fuzzy switching gain adjustment. The purposes including the maximum po...

Wind energy is often installed in rural, remote areas characterized by weak, unbalanced power transmission grids. In induction wind generators, unbalanced three phase stator voltages cause a number of problems, including overheating and stress on the mechanical components from torque pulsations. Therefore, beyond a certain amount of unbalance (for example 6%), induction wind generators are swit...

Future energy demand and increasing carbon emission requires an alternative source of energy. In recent few years, Use of DFIG based wind farm increased tremendously, thus effect of wind penetration on small signal stability of existing multi machine system need to be analysed. In This paper effect of penetration of wind turbine with DFIG on stability performance of the IEEE 9 bus and 39 bus sy...

This paper presents the explicit electromagnetic transient model of a Doubly Fed Induction Generator (DFIG), that includes its coupling with the back-to-back converter, when the generator/converter set is connected to the wind farm’s Thevenin equivalent, as seen from DFIG’s terminals. Besides that, DFIG’s grid side converter control system is defined in detail, so that expressions for the direc...

The robust power oscillation damper (POD) design for doubly fed inducting generator (DFIG) based on a mixed H2/H∞ control method is proposed in this paper. A practical 2-order lead/lag compensator with local input signal is chosen as the POD structure. The POD is additionally installed with the voltage control loop of DFIG so that the modulation of reactive power output can be performed to damp...