This paper presents a control strategy to mitigate subsynchronous oscillations (SSOs) in doubly-fed induction generator (DFIG)-based wind farms integrated into series-compensated transmission systems. The has two parts: the first one, compensation filter based on motion-induction amplification concept is proposed increase damping of DFIG machine frequency range; second proportional-integral (PI...

Doubly-fed induction generator (DFIG) based wind turbines with traditional maximum power point tracking (MPPT) control provide no inertia response under system frequency events. Recently, the DFIG wind turbines have been equipped with virtual inertia controller (VIC) for supporting power system frequency stability. However, the conventional VICs with fixed gain have negative effects on inter-ar...

This paper proposes the control of a doubly fed induction generator DFIG used in wind turbine energy conversion. The control strategy is based on the linear active disturbance rejection control ADRC to generate the control voltages of the rotor side converter RSC and the grid side converter GSC, due to the changes in control inputs. The ADRC, based on the extended state observer ESO, estimate a...

This paper presents an effective rotor current controller for variable-speed stand-alone doubly fed induction generator (DFIG) systems feeding an unbalanced three-phase load. The proposed current controller is developed based on proportional plus two resonant regulators, which are tuned at the positive and negative slip frequencies and implemented in the rotor reference frame without decomposin...

In this paper direct power control (DPC) strategy is applied to control a doubly fed induction generator (DFIG) based wind energy generation system. A AC/DC/AC converter is controlled by direct power control method. The rotor side converter is controlled by selects appropriates voltage vector based on the instantaneous errors between the reference and estimated values of active and reactive pow...

This paper deals with a control scheme to extract maximum power from the wind energy conversion system (WECS) using Maximum Power Point Tracking Algorithm (MPPT) from a Doubly Fed Induction Generator (DFIG). In order to ensure the continuous supply of power, battery backup is established. The control scheme for standalone system includes the charge controller circuit for battery bank and pitch ...

Doubly fed induction generator (DFIG)-based wind power systems incur a broadband negative resistive characteristic, resulting in resonance risks when connected with weak grid or diverse transmission infrastructure. The dominant factor and underlying mechanism of this characteristic are analyzed based on the passivity-based stability assessment. It is then noticed that region within low frequenc...

This paper offers non-linear control for enhancing the transient stability in power systems containing a photovoltaic (PV) and doubly fed induction generator (DFIG) by energy function (TEF) method finite-time observers. At first, TEF is utilized to enhance system PV, DFIG, synchronous (SG) constructing hybrid Lyapunov function. Then, derivative terms are estimated with The main contribution of ...

With the prevalence of renewable energy sources such as wind power in system, analyzing fault characteristics systems composed DFIGs is becoming increasingly important. Therefore, this article analyzes, at first theoretically, a doubly fed induction generator (DFIG) during periods. It was found that current DFIG exhibited frequency offset phenomenon, which affected by depth voltage dips and can...