Wind energy conversion system based on DFIG with series grid side converter without transformer

2017 ◽  
Author(s):  
Italo A. Cavalcanti de Oliveira ◽  
Nady Rocha ◽  
Edison Roberto Cabral da Silva ◽  
Luanna M. Silva de Siqueira ◽  
Ely Cavalcanti de Menezes ◽  
...  
Keyword(s):  
Wind Energy ◽  
Energy Conversion ◽  
Wind Energy Conversion System ◽  
Wind Energy Conversion ◽  
Conversion System ◽  
Energy Conversion System ◽  
Grid Side ◽  
Grid Side Converter

scholarly journals Voltage & Frequency Stabilisation of a Hybrid Micro Grid Framework using Sliding Mode Controller

2019 ◽  
Vol 8 (4) ◽  
pp. 10758-10765
Keyword(s):  
Wind Energy ◽  
Energy Conversion ◽  
Time Varying ◽  
Wind Energy Conversion System ◽  
Wind Energy Conversion ◽  
Conversion System ◽  
Energy Conversion System ◽  
Micro Grid ◽  
Grid Side ◽  
Grid Side Converter

In this paper an extemporized micro grid system is considered, which is capable of supplying power to different time varying loads. The framework considered in this work comprises of different sources for example a consistent power miniaturized scale micro-hydro system, a wind energy conversion system equipped with Battery Energy Storage System. The consistent power smaller scale micro-hydro houses a 22KW SEIG which conveys capacity to the local time varying loads. The BESS is associated at the DC connection of the Wind Energy Conversion System. Grid Side Converter of the Wind Energy Conversion System acts like a STATCOM. During different stacking conditions, the active and reactive power created by the SEIG isn't adequate, in this way there is a negligible change in frameworks of voltage and frequency. In this way Grid Side Converter conveys the necessary capacity to the system keeps up the frequency and voltage to be consistent and improves power quality in the system. The Grid Side Converter likewise deals with the active power intensity of the system by putting away the overabundance power in the BESS and providing it when required in the evening time. Different sorts of loads, for example, Linear RL load, Non-Linear load, and Dynamic load are considered to assess the exhibition of the hybrid autonomous system. The above simulation is finished utilizing MATLAB/Simulink condition.

scholarly journals Nonlinear control of grid-connected wind energy conversion system without mechanical variables measurements

2021 ◽  
Vol 12 (2) ◽  
pp. 1139
Author(s):  
Karim Noussi ◽  
Abdelmajid Abouloifa ◽  
Hanane Katir ◽  
Ibtissam Lachkar ◽  
Fouad Giri
Keyword(s):  
Wind Energy ◽  
Energy Conversion ◽  
Reactive Power ◽  
Sliding Mode ◽  
High Gain ◽  
Wind Energy Conversion System ◽  
Wind Energy Conversion ◽  
Conversion System ◽  
Energy Conversion System ◽  
Grid Side

This article addresses the problem of controlling an overall wind energy conversion system (WECS) formed by a wind turbine connected to the grid via a doubly fed introduction generator (DFIG) and an AC/DC/AC converter. The main control objectives are fourfold: (i) designing an output feedback speed controller that makes the DFIG rotate at the optimal value delivered by the MPPT strategy, (ii) controlling the stator reactive power so as to be null, (iii) guaranteeing the DC-link voltage in the grid side converter to be at a given constant value, (iv) ensuring a unitary power factor. A high gain observer is synthesized, in order to provide estimated values of the mechanical variables. To achieve the control objectives, a sliding mode controller involving the mechanical observer is designed. The performance of the system configuration based on the 2MW-DFIG with the proposed controller is evaluated by a numerical simulation under a realistic wind profile using MATLAB/SIMULINK/SimPowerSystems environment.

scholarly journals Comparative Analysis between PI and Linear-ADRC Control of a Grid Connected Variable Speed Wind Energy Conversion System Based on a Squirrel Cage Induction Generator

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Hammadi Laghridat ◽  
Ahmed Essadki ◽  
Tamou Nasser
Keyword(s):  
Wind Energy ◽  
Energy Conversion ◽  
Variable Speed ◽  
Wind Energy Conversion System ◽  
Wind Energy Conversion ◽  
Squirrel Cage ◽  
Conversion System ◽  
Energy Conversion System ◽  
Squirrel Cage Induction Generator ◽  
Grid Side

This paper aims at contributing to the modeling and control of a variable speed Wind Energy Conversion System (WEC-System) based on a Squirrel Cage Induction Generator (SCI-Generator). The connection between the SCI-Generator and the main utility grid is achieved by back-to-back three phase power converters (Generator and Grid Side Converters). A new control strategy named the Active Disturbance Rejection Control (ADRC) is proposed and utilized to control the Wind Energy Conversion (WEC) system based on the SCI-Generator. The objective is to control both the generator and the grid side converters in order to operate the system and to ensure the connection with the power grid. The first converter is used to control the SCI-Generator speed and field to extract the available maximum power from the wind turbine by using a Maximum Power Point Tracking (MPPT) technique and, also, to ensure that the extracted power does not exceed its rated value in case of strong wind speeds; in this case a pitch actuator system is used to control the blades pitch angle of the wind turbine. The second converter is used to control the active and reactive powers injected into the utility grid as well as to regulate the DC-Link Voltage. This control takes into account the rejection of internal disturbances as the variation of electrical parameters (the resistance, the inductance…) and the external disturbances as voltage dips and frequency droops in the main grid. To test and validate the performances of the proposed controller, a series of simulations were developed under MATLAB/Simulink environment, and the results have demonstrated the effectiveness of the proposed control under different case of simulations.

scholarly journals Application of Solid State Transformer in DFIG Based Wind Energy Conversion System

2019 ◽  
Vol 8 (2S11) ◽  
pp. 2554-2558
Keyword(s):  
Solid State ◽  
Wind Energy ◽  
Energy Conversion ◽  
Power Flow ◽  
Solid State Transformer ◽  
Wind Energy Conversion System ◽  
Wind Energy Conversion ◽  
Conversion System ◽  
Energy Conversion System ◽  
Grid Side

In wind energy systems the central frequency transformer goes about as a key component between the WECS and the grid As of late there have been endeavors to supplant this transformer by a power electronics based solid state transformer This paper aims to provide a setup that incorporates the doubly fed induction generator based wind energy conversion system and Solid state transformer operation The principle target of the proposed setup is to combine the turbine with the grid while giving upgraded efficiency and performance .In this configuration SST controls the real power flow to/from the rotor side converter therefore taking out the grid side converter. The proposed framework meets the ongoing grid code necessities of wind turbine activity under fault conditions A definitive simulation is done in MATLAB to approve the execution of the proposed configuration and a prototype of the setup is also built

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