Direct and indirect vector control of a doubly fed induction generator based in a wind energy conversion system

<p>The aim of this paper is to present a study of the efficiency of the electrical part of a wind generation system. Two back-to-back PWM voltage-fed inverters connected between the stator and the rotor are used to allow bidirectional power flow. The second inverter grid side, has a role of a power active filter, to eliminate the harmonic generated by the non linear load, in the same time gives an active and reactive power needed by the rotor of DFIG. The harmonics of switching frequency in the current stator, pose a major problem in the moment where commutations in the diode bridge, to solve this problem, we introduce a small-sized passive LC filter for the purpose of eliminating high-frequency shaft voltage and grid current from a DFIG driven by a voltage-source pulse width-modulation rotor inverter controlled with SVM. The control theory is discussed, and the controller implementation is described. Design criteria are also given. The results of simulation tests show excellent static and dynamic performances.</p>

“…The equations of a DFIG in a synchronously rotating d-q reference frame, with the q-axis aligned along the stator flux vector position are given by [3]:…”

Section: Dfig Electrical Model With An Lc Filtermentioning

confidence: 99%

Section: Dfig Electrical Model With An Lc Filtermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Developing a grid-connected DFIG strategy for the integration of wind power with harmonic current mitigation

Mahieddine

Zarour

Louze

et al. 2019

“…Today, the fear of being limited to ephemeral energies, the awareness of the negative impact of these on the environment, the craze for renewable energies and the opening of the market of the production of energy towards other alternatives are factors that give an important place to these energies (hydraulic, wind, solar, biomass, ...) in the production of electricity [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the direct power control applied to DFIG-WECS

Aroussi¹,

Ziani²,

Bouderbala³

et al. 2020

Self Cite

<span lang="EN-US">This work is dedicated to the study of an improved direct control of powers of the doubly fed induction generator (DFIG) incorporated in a wind energy conversion system 'WECS'. The control method adopts direct power control 'DPC' because of its various advantages like the ease of implementation which allows decoupled regulation for active and reactive powers, as well as a good performance at transient and steady state without PI regulators and rotating coordinate transformations. To do this, the modeling of the turbine and generator is performed. Therefore, the Maximum Power Point Tracking (MPPT) technology is implemented to extract optimal power at variable wind speed conditions. Subsequently, an explanation of the said command is spread out as well as the principle of adjusting the active and reactive power according to the desired speed. Then, the estimation method of these two control variables will be presented as well as the adopted switching table of the hysteresis controller model used based on the model of the multilevel inverters. Finally, the robustness of the developed system will be analyzed with validation in Matlab / Simulink environment to illustrate the performance of this command.</span>

“…Many solutions to mitigate harmonics using appropriate control algorithms are reported in the literature. In [7,8], indirect control algorithms employed for voltage regulation in standalone systems. This control algorithm is a simple view of the point implementation but required more improvement especially during the transition due to use of the simple proportional integral controller (PI).…”

Section: Introductionmentioning

confidence: 99%

Improved predictive current model control based on adaptive PR controller for standalone system based DG set

Ikaouassen¹,

Raddaoui²,

Rezkallah³

et al. 2020

This paper investigates an improved current predictive model control (PCMC) strategy with a prediction horizon of one sampling time for voltage regulation in standalone system based on diesel engine driven fixed speed of a synchronous generator. An adaptive PR controller with anti-windup scheme is employed to achieve high performance regulation without saturation issues. In addition, new method to obtain the optimal parameters of the adaptive PR controller to achieve high performance during the transition and in steady state is provided. To balance the power at the point of common coupling (PCC) as well as to feed a clean power to the connected loads, a three-phase voltage source inverter (VSI) with LRC filter is controlled using the developed improved PCMC strategy, where the output filter current is controlled using the predicting of the system behaviour model in the future step, at each sampling prediction time. The performances of the proposed configuration and the improved control strategy are verified using Matlab/Simulink interface.