Power and Voltage Smooth Control of Doubly Fed Induction Generator

2014 ◽  
Vol 494-495 ◽  
pp. 1829-1832
Author(s):  
An Ren Ma ◽  
Cai Xia Wang ◽  
Zhi Wen Zhou ◽  
Tao Wu
Keyword(s):  
Decoupling Control ◽  
Induction Generator ◽  
Storage Device ◽  
Doubly Fed Induction Generator ◽  
Energy Storage Device ◽  
Good Characteristic ◽  
Smooth Control ◽  
New Energy ◽  
Doubly Fed ◽  
Grid Side

Doubly-fed induction generator (DFIG) is the leading in wind power technology currently. In this paper, decoupling control of DFIG is studied and a new energy storage device is used in the smooth control of DFIG system’s power and voltage. This new method has a good characteristic on stability of grid-side power and voltage when the wind speed changes rapidly. In this paper, a simulation system based on this method is designed using MATLAB, the experimental results of simulation show that the method is correct and has practical value.

scholarly journals Improved Performance of DFIG-generators for Wind Turbines Variable-speed

2018 ◽  
Vol 9 (4) ◽  
pp. 1875
Author(s):  
Ihedrane Yasmine ◽  
El Bekkali Chakib ◽  
Bossoufi Badre
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
System Stability ◽  
Control Technique ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Mode Control ◽  
Dc Bus ◽  
Doubly Fed ◽  
Grid Side

<span lang="EN-US">The following article presents the control of the power generated by the Doubly Fed Induction Generator, integrated into the wind system, whose rotor is linked to the power converters (Rotor Side Convert (RSC) and Grid Side Converter (GSC)) interfaced by the DC-BUS and connected to the grid via a filter (Rf, Lf) in order to obtain an optimal power to the grid and to ensure system stability. The objective of this study is to understand and to make the comparison between Sliding mode Control technique and the Flux Oriented Control in order to control the Doubly Fed Induction Generator powers exchanged with the grid, it also aims at maintaining the DC-BUS voltage constant and a unit power factor at the grid connection point.The results of simulation show the performance of the Sliding mode Control in terms of monitoring, and robustness with regard to the parametric variations, compared to the Flux Oriented Control. The performance of the systems was tested and compared with the use of MATLAB/Simulink software.</span>

Research on Strategy of Grid-Side PWM Converter Based on Doubly-Fed Induction Generator

2012 ◽  
Vol 538-541 ◽  
pp. 3125-3128
Author(s):  
Wei Zhang ◽  
Yi Ruan
Keyword(s):  
Mathematic Model ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Operating Characteristics ◽  
Generation System ◽  
Pwm Converter ◽  
Control Scheme ◽  
Doubly Fed ◽  
Grid Side ◽  
Grid Side Converter

A mathematic model of the grid-side PWM converter based on Doubly-Fed Induction Generator (DFIG) has been investigated to analyze their operating characteristics. The control scheme to the grid-side PWM converter was presented. And the simulation model of the grid-side converter (GSC) based on DFIG energy generation system was built in Matlab / simulink software. The results show the feasibility and correctness of the control strategy.

scholarly journals Stochastic Distribution Controller for Wind Turbines with Doubly Fed Induction Generator

2021 ◽  
Author(s):  
Vijayalaxmi Munisamy ◽  
Nayagam Shanmuga Vadivoo ◽  
Vaithilingam Devasena
Keyword(s):  
Reactive Power ◽  
Pi Controller ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Major Purpose ◽  
Proportional Integral ◽  
Operating Region ◽  
Doubly Fed ◽  
Grid Side ◽  
Stochastic Distribution

The major purpose of this work is to design the controllers for controlling the variable speed, variable pitch wind turbine (WT) with doubly fed induction generator (DFIG). Vector control strategy is adopted for controlling the DFIG active and reactive power. Generator torque is control to provide the regulated real power with minimum fluctuation. The fixed gain proportional-integral (PI) controller designed to the converter of rotor side and grid side has limited operating range and inherent overshoot. Gain scheduling PI controller is designed to minimize the overshoot and fluctuation exists in proportional-integral controller. Since DFIG based wind energy conversion system (WECS) works in uncertain wind speed, stochastic distribution control (SDC) method is proposed to control the probability distribution function (PDF) of DFIG based WECS. It copes with nonlinearities in the WECS and contiguous variations at operating point and provides satisfactory performance for the whole operating region. It improves the performance together with power quality of generated electric power thereby maximizing the lifespan of installation and ensures secure and acceptable operation of the DFIG based WECS.

scholarly journals Recurrence of Sub-Synchronous Oscillation Accident of Hornsea Wind Farm in UK and Its Suppression Strategy

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7685
Author(s):  
Xiangwu Yan ◽  
Wenfei Chang ◽  
Sen Cui ◽  
Aazim Rassol ◽  
Jiaoxin Jia ◽  
...  
Keyword(s):  
Power System ◽  
Wind Power ◽  
Control Strategy ◽  
Wind Farm ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Synchronous Oscillation ◽  
Wind Power System ◽  
Doubly Fed ◽  
Grid Side

A large-scale power system breakdown in the United Kingdom caused blackouts in several important cities, losing about 3.2 percent of the load and affecting nearly 1 million power users on 9 August 2019. On the basis of the accident investigation report provided by the UK National Grid, the specific reasons for the sub-synchronous oscillation of Hornsea wind farm were analyzed. The Hornsea wind power system model was established by MATLAB simulation software to reproduce the accident. To solve this problem, based on the positive and negative sequence decomposition, the control strategy of grid-side converter of doubly-fed induction generator is improved to control the positive sequence voltage of the generator terminal, which can quickly recover the voltage by compensating the reactive power at the grid side. Consequently, the influence of the fault is weakened on the Hornsea wind farm system, and the sub-synchronous oscillation of the system is suppressed. The simulation results verify the effectiveness of the proposed control strategy in suppressing the sub-synchronous oscillation of weak AC wind power system after being applied to doubly-fed induction generator, which serves as a reference for studying similar problems of offshore wind power.

Intelligent Control for Doubly Fed Induction Generator Connected to the Electrical Network

2016 ◽  
Vol 7 (3) ◽  
pp. 688 ◽  
Author(s):  
Anass Bakouri ◽  
Hassane Mahmoudi ◽  
Ahmed Abbou
Keyword(s):  
Fuzzy Logic Controller ◽  
Control Strategies ◽  
Direct Torque Control ◽  
Torque Control ◽  
Electrical Network ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Intelligent Technique ◽  
Doubly Fed ◽  
Grid Side

<p><span lang="EN-US">In this paper we are interested in optimizing the wind power capture, using the Doubly Fed Induction Generator (DFIG). This machine is preferred to other types of variable speed generator because of their advantages in economic terms and control. The Artificial Neural Network (ANN) based on Direct Torque Control (DTC) which is used to control the electromagnetic torque in order to extract the maximum power, The  main  objective  of this intelligent technique is to replace the conventional switching table  by  a  voltage  selector  based  on  (ANN)  to  reduce torque  and  flux  ripples. Moreover, the fuzzy logic controller is used to grid side converter to keep DC link voltage constant, and also to achieve unity power factor operation. The main advantage of the two control strategies proposed in this paper is that they are not influenced by the variation of the machine parameter. The pitch control is also presented to limit the generator power at its rated value. Simulation results of 1,5 MW, for (DFIG) based Wind Energy Conversion System (WECS) confirm the effectiveness and the performance of the global proposed approaches.</span></p>

Sign in / Sign up

Export Citation Format

Share Document