scholarly journals Grid Side Inverter Control for a Grid Connected Synchronous Generator Based Wind Turbine Experimental Emulator

2021 ◽  
Vol 23 (1) ◽  
pp. 1-7
Author(s):  
Dekali Zouheyr ◽  
Baghli Lotfi ◽  
Lubin Thierry ◽  
Boumediene Abdelmadjid
Keyword(s):  
Wind Turbine ◽  
Reactive Power ◽  
Synchronous Generator ◽  
Power Converter ◽  
Mechanical Coupling ◽  
Operating Modes ◽  
Vector Orientation ◽  
Grid Side ◽  
Grid Side Converter ◽  
And Control

This paper describes the real time implementation and control of a wind energy conversion chain emulator based on a synchronous generator (SG) using a full-scale power converter configuration. The proposed structure consists of the mechanical coupling of two 1.5 kW machines, a DC motor which emulates the static-dynamic behaviors of a three-blade wind turbine with a horizontal axis including an ideal gearbox, and a synchronous generator that ensures the electromechanical conversion and manages the different operating modes. The aim of the first part in this work is the design and the implementation of the control of the grid side converter in order to control the flow of the produced/consumed active and reactive power (PGSC / QGSC) in both directions between the generator and the grid. An improved experimental grid voltage vector-orientation control algorithm (VOC) is investigated and applied to the grid inverter to control the GSC powers independently and instantly. The control algorithms are implanted in C, using dSPACE DS1104 control board to drive the 6-IGBT’s inverter. The experimental results validate the effectiveness of the proposed control scheme of the GSC.

scholarly journals Advanced control of direct-driven PMSG generator in wind turbine system

2016 ◽  
Vol 65 (4) ◽  
pp. 643-656 ◽  
Author(s):  
Piotr Gajewski ◽  
Krzysztof Pieńkowski
Keyword(s):  
Control System ◽  
Wind Energy ◽  
Wind Turbine ◽  
Vector Control ◽  
Reactive Power ◽  
Wind Turbine System ◽  
Advanced Control ◽  
Grid Side ◽  
Grid Side Converter ◽  
And Control

Abstract The paper presents the advanced control system of the wind energy conversion with a variable speed wind turbine. The considered system consists of a wind turbine with the permanent magnet synchronous generator (PMSG), machine side converter (MSC), grid side converter (GSC) and control circuits. The mathematical models of a wind turbine system, the PMSG generator and converters have been described. The control algorithms of the converter systems based on the methods of vector control have been applied. In the advanced control system of the machine side converter the optimal MPPT control method has been used. Additionally the pitch control scheme is included in order to achieve the limitation of maximum power and to prevent mechanical damage of the wind turbine. In the control system of the grid side converter the control of active and reactive power has been applied with the application of Voltage Oriented Control (VOC). The performance of the considered wind energy system has been studied by digital simulation. The results of simulation studies confirmed the good effectiveness of the considered wind turbine system and very good performance of the proposed methods of vector control and control systems.

scholarly journals Simulation of reactive power regulation of DFIG

2021 ◽  
Vol 233 ◽  
pp. 01025
Author(s):  
Yingfeng Zhu ◽  
Xiaosu Xie ◽  
Dong Yang ◽  
Song Gao ◽  
Weichao Zhang ◽  
...  
Keyword(s):  
Wind Farm ◽  
Reactive Power ◽  
Control Method ◽  
Power Regulation ◽  
Working Principle ◽  
Power Limit ◽  
Doubly Fed ◽  
Grid Side ◽  
Grid Side Converter ◽  
And Control

Doubly fed induction generator (DFIG) wind power generation system is widely used in wind farm all over the world. Reactive power can be generated both in grid-side converter and generator-side converter of DFIG. In this paper, working principle and control method of DFIG are introduced, and the reactive power limit of DFIG is derived, finally reactive power regulation is simulated in Simulink.

scholarly journals Operation and Control of a Direct-Driven PMSG-Based Wind Turbine System with an Auxiliary Parallel Grid-Side Converter

Energies ◽  
2013 ◽  
Vol 6 (7) ◽  
pp. 3405-3421 ◽  
Author(s):  
Zaijun Wu ◽  
Xiaobo Dou ◽  
Jiawei Chu ◽  
Minqiang Hu
Keyword(s):  
Wind Turbine ◽  
Wind Turbine System ◽  
Grid Side ◽  
Grid Side Converter ◽  
And Control

scholarly journals Super-Twisting Sliding Mode Control for Gearless PMSG-Based Wind Turbine

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Mojtaba Nasiri ◽  
Saleh Mobayen ◽  
Quan Min Zhu
Keyword(s):  
Wind Turbine ◽  
Reactive Power ◽  
Low Voltage ◽  
Sliding Mode ◽  
Synchronous Generator ◽  
Voltage Regulation ◽  
Point Tracking ◽  
Chattering Free ◽  
Grid Codes ◽  
Grid Side

In recent years, the complexities of wind turbine control are raised while implementing grid codes in voltage sag conditions. In fact, wind turbines should stay connected to the grid and inject reactive power according to the new grid codes. Accordingly, this paper presents a new control algorithm based on super-twisting sliding mode for a gearless wind turbine by a permanent magnet synchronous generator (PMSG). The PMSG is connected to the grid via the back-to-back converter. In the proposed method, the machine side converter regulates the DC-link voltage. This strategy improves low-voltage ride through (LVRT) capability. In addition, the grid side inverter provides the maximum power point tracking (MPPT) control. It should be noted that the super-twisting sliding mode (STSM) control is implemented to effectively deal with nonlinear relationship between DC-link voltage and the input control signal. The main features of the designed controller are being chattering-free and its robustness against external disturbances such as grid fault conditions. Simulations are performed on the MATLAB/Simulink platform. This controller is compared with Proportional-Integral (PI) and the first-order sliding mode (FOSM) controllers to illustrate the DC-link voltage regulation capability in the normal and grid fault conditions. Then, to show the MPPT implementation of the proposed controller, wind speed is changed with time. The simulation results show designed STSM controller better performance and robustness under different conditions.

scholarly journals Intensifications reactive power during of asymmetric network outages in dual-stator winding generators

2021 ◽  
Vol 12 (4) ◽  
pp. 2451
Author(s):  
Qasim Al Azze ◽  
Balasim М. Hussein ◽  
Hayder Salim Hameed
Keyword(s):  
Wind Turbine ◽  
Reactive Power ◽  
Stator Winding ◽  
Working Process ◽  
Main Interest ◽  
Grid Connection ◽  
And Performance ◽  
Grid Side ◽  
Grid Side Converter ◽  
Secondary Side

<span lang="EN-US">The paper proposes a protection to dual stator generator, reluctance rotor, from asymmetrical fault. Which prevents the dual stator generator, reluctance rotor, from electrical sage through working process in order to avoid any interruption in the generator-grid connection. The procedure consummated with injecting suitable reactive power during the fault period. The proposed method that makes it possible for wind turbine application via dual stator winding generators (DSWRG) synchronous mod to stay connected to the grid during asymmetrical faults. It has been built according to trusted simulating mode considering all tested parameters according to experiment work. The expirment, consider the DC link side stability and care about the behavior and performance of machine side parameter. As well the machineability is evaluated to ride through asymmetrical fault by observing the secondary side current which has a big role in saving grid side converter. The control takes a response within 200 ms after fault trigger recognition. The generator ability of dynamically remaining connected stable and existing in the network, which is sustained a series voltage disturbance by injecting appropriate amount of reactive power. The main interest required in this paper is the capability of a machine to overcome the asymmetrical fault.</span>

scholarly journals Comparative Study of the Grid Side Converter’s Control during a Voltage Dip

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Hind Elaimani ◽  
Ahmed Essadki ◽  
Noureddine Elmouhi ◽  
Rachid Chakib
Keyword(s):  
Reactive Power ◽  
Sliding Mode ◽  
Control Strategies ◽  
Modeling And Control ◽  
Wind Energy Conversion ◽  
Voltage Dip ◽  
Doubly Fed ◽  
Grid Side ◽  
Grid Side Converter ◽  
And Control

The modeling and control of a wind energy conversion system based on the Doubly Fed Induction Generator DFIG is the discussed theme in this paper. The purpose of this system was to control active and reactive power converted; this control is ensured thanks to the control of the two converters. The proposed control strategies are controlled by PI regulators and the sliding mode technique. In the present work a comparison of the robustness of the 2 controls of the grid side converter (GSC) during a voltage dip is shown. The simulation is carried out using the Matlab/Simulink software with a 300 kW generator.

A 3-Ф grid connected wind system with a technique of DC link control using fewer sensors with fuzzy controller

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
D. Naveen Kilari ◽  
A. Hema Sekhar ◽  
N. Sudhakar Reddy ◽  
N.P. Dharani
Keyword(s):  
Wind Turbine ◽  
Fuzzy Controller ◽  
Synchronous Generator ◽  
Maximum Energy ◽  
Effective Control ◽  
Content Type ◽  
Point Tracking ◽  
Power Point ◽  
Grid Side ◽  
Grid Side Converter

PurposeThis paper aims to provide a permanent magnet synchronous generator (PMSG) wind turbine, which feeds electric power (AC) to the power grid. The converter, located on the machine side, is used to produce the full amount of wind power. Research on wind energy conversion system (WECS) is carried out in this study using a direct wind turbine in MATLAB with constant and variable speeds.Design/methodology/approachThis paper is about WECS using PMSG and is connected to a grid of two serial converters with common DC connections.FindingsThis paper aims to provide the value of DC connection voltage at its base, regardless of the wind speed alterations, the inverter's output ac voltage can be kept constant.Originality/valueThis paper aims to provide a Hill Climb Search maximum power point tracking (MPPT) algorithm is an effective control system for extracting maximum energy, also called voltage control, pitch control, phase-locked loop (PLL) controls, from a wind turbine. Using the Fuzzy controller, the grid side converter is controlled.

scholarly journals Simulation and Analysis of DFIG System with Wind Turbine Implementing Fuzzy Logic Control

2019 ◽  
Vol 8 (6) ◽  
pp. 2764-2771
Keyword(s):  
Fuzzy Logic ◽  
Wind Turbine ◽  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Current Control ◽  
Control Voltage ◽  
Active And Reactive Power ◽  
Grid Side ◽  
Rotor Side Converter ◽  
Grid Side Converter

A doubly-fed induction generator (DFIG) applied to wind power generation driven by wind turbine is under study for low voltage ride-through application during system unbalance. Use of DFIG in wind turbine is widely spreading due to its control over DC voltage and active and reactive power. Conventional dq axis current control using voltage source converters for both the grid side and the rotor side of the DFIG are analyzed and simulated. An improved control and operation of DFIG system under unbalanced grid voltage conditions by coordinating the control of both the rotor side converter (RSC) and the grid side converter (GSC) is done in this thesis. Simulation and analysis of DFIG system with wind turbine using Fuzzy logic controller for RSC and GSC under unbalanced condition is presented in the positive synchronous reference frame. The common DC-link voltage is controlled by grid side converter and control of DFIG’s stator output active and reactive power is controlled by rotor side converter. The steady-state operation of the DFIG and its dynamic response to voltage sag resulting from a remote fault on the 120-kV system is shown in this thesis using controllers. Modeling of DFIG system under Fuzzy logic controller to control voltage and active-reactive powers is done using MATLAB/SIMULINK.

scholarly journals Analysis and Performance Of Grid Connected Straight Driven Pmsg Based Wind Turbines

2021 ◽  
Vol 12 (2) ◽  
pp. 1304-1312
Author(s):  
Eswaraiah G, Et. al.
Keyword(s):  
Renewable Energy ◽  
Wind Turbine ◽  
Permanent Magnet ◽  
Control Strategy ◽  
Synchronous Generator ◽  
Optimization Techniques ◽  
Speed Ratio ◽  
Permanent Magnet Synchronous Generator ◽  
Grid Side ◽  
Grid Side Converter

Permanent-magnet synchronous generator (PMSG) are used widely in wind turbine applications. The performance analysis of PMSG can be enhanced by adopting a number of control mechanisms with the benefit of advanced optimization techniques. Renewable energy is harnessed from continuously replenishing natural processes. Some commonly known are sunlight, water, wind, tides, geothermal heat and various forms of biomass. The focus on renewable energy has over the past few decades intensified greatly. This paper presents modeling and control strategy for the grid connected wind turbine system based on Permanent Magnet Synchronous Generator (PMSG). The considered system is based on back-to-back converter topology. The Grid Side Converter (GSC) achieves the DC bus voltage control and unity power factor. The Machine Side Converter (MSC) assures the PMSG speed control. The PMSG is used as a variable speed generator and connected directly to the turbine without gearbox. The pitch angle control is not either considered in this study. Further, Optimal Tip Speed Ratio based MPPT control strategy is used to ensure the most energy efficiency whatever the wind speed variations. A filter (L) is put between the GSC and the grid to reduce current ripple and to improve the injected power quality.During grid faults, a hierarchical coordinated control scheme for the generator-side converter, main grid-side converter and auxiliary grid-side converter, depending on the grid voltage sags, is presented to enhance the low voltage ride through (LVRT) capability of the direct-driven PMSG WT.  

scholarly journals Providing Ancillary Services with Wind Turbine Generators Based on DFIG with a Two-Branch Static Converter

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2490 ◽  
Author(s):  
Ernande Eugenio C. Morais ◽  
Francisco Kleber de A. Lima ◽  
Jean M. L. Fonseca ◽  
Carlos G. C. Branco ◽  
Lívia de A. Machado
Keyword(s):  
Wind Turbine ◽  
Reactive Power ◽  
Power Converter ◽  
Ancillary Services ◽  
Nonlinear Loads ◽  
Turbine Generators ◽  
Point Of Common Coupling ◽  
Doubly Fed ◽  
Grid Side ◽  
Controller Board

This work aims to analyze and validate through mathematical modeling and experimental results, in a three-phase three-wire electrical system, the technical viability of a static power converter with a two-level topology with only two controlled branches (2L2B), operating as a grid-side converter (GSC) in a wind turbine generator based on a doubly fed induction generator (DFIG). With this reduced-switches topology, the GSC is able to regulate the DC-link voltage level from the generator back-to-back converter and provide ancillary services of harmonic filtering and reactive power compensation from linear/nonlinear loads connected to the point of common coupling. An 8-kVA experimental prototype was implemented in the laboratory to validate the proposal. The prototype control system was realized using the dSPACE DS1103 PPC Controller Board platform programmed via MATLAB/Simulink. The effectiveness of the proposed system is verified by comparing the results obtained with the 2L2B topology to the ones with the usual two-level three-branch topology.

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