Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 25 for “"Doubly-fed Induction Generator"”.
-
Modelling and performance analysis of doubly fed induction generator wind farm
Submitted in fulfillment of the requirements for the degree of Master of Engineering in Electrical Power Engineering, Durban University of Technology, Durban, South Africa, 2018.
-
Doubly Fed Induction Generator Control Using Artificial Neural Network for Wind Generation System
… wind turbines, the wind generation system needs generators. The doubly fed induction generator is the most commonly used due to its high energy transfer efficiency, reliability, and low maintenance cost. The control of DFIG parameters is crucial to the dynamic performance of the wind generation …
-
Development of a scaled doubly-fed induction generator for assessment of wind power integration issues
… the designing and the prototyping of a scaled doubly-fed induction generator (micro-DFIG). The machine is also analysed and tested. The scaling of the micro-machine is achieved by means of a dimensional analysis, which is a mathematical method that allows machines and systems to be downscaled …
-
Detection of faults in a scaled down doubly-fed induction generator using advanced signal processing techniques.
… ventures into the development of a micro-based doubly fed induction generator (DFIG) test rig for fault studies. The 5kW wound rotor induction machine (WRIM) that was used in the test rig was based on a scaled-down version of a 2.5MW doubly fed induction generator (DFIG). The micromachine has …
-
Real-time simulation of a doubly-fed induction generator based wind power system on eMEGASim® real-time digital simulator
… to perform real-time simulation studies of Doubly-Fed Induction Generator (DFIG) based wind generation systems as basis for performing more practical tests of reliability and performance for both grid-connected and islanded wind generation systems. The author focused on developing a platform …
-
The impact of wind generators on a Powe system's transient stability
… carried out on the different types of wind generators and how these would affect the transient stability of a hypothetical power network as presented in this report. Focus was on the transient responses of the conventional synchronous generator’s rotor angle and terminal voltage when …
-
A doubly-fed permanent magnet generator for wind turbines
… issues. We propose a novel variation of a doubly-fed induction generator which aims to improve power density and simplify construction. Our design is a doubly-fed, dual-rotor, axial-flux, permanent-magnet machine. Progress in the construction of a prototype is described. Analysis of the …
-
Development of a DFIG wind energy system for grid integration studies
Doubly Fed Induction Generators (DFIGs) are common for use in wind power generation. This can be attributed to factors such as the variable speed operation of the rotor, which can be adjusted through control systems with varying wind speed, ensuring more efficient power conversion.The stator …
-
A Framework for Assessing the Reliability of Wind Energy Conversion Systems
… using a detailed model of type C WECS - doubly fed induction generator with corresponding deterministic and random variables in a simplified grid model. Fault parameters and performance requirements essential to reliability measurements are included in the simulation. The proposed …
-
Islanded Wind Energy Management System Based on Neural Networks
… and its applications in microgrids. The doubly fed induction generator (DFIG) wind turbine is popular in the wind industry and thus has been researched in this Dissertation. In order to investigate reasons of harmonic generation in wind power systems, a DFIG wind turbine is modeled by …
-
Large wind farm aggregation and model validation
… study is conducted using the General Electric GE doubly fed induction generator wind turbine modeled in the PowerWorld Simulator. Through this research, we have shown that: • A large wind farm using the GE DFIG wind turbines can be consistently aggregated to one equivalent machine for load flow …
-
Performance Assessment and Management of Large Wind Farms under Abnormal Grid Operating Conditions
… grid disturbances, compared to synchronous generators. In this research, wind farms are illustrative of increasing influence of renewable on grids with several large scale deployments being integrated with transmission networks. The New Zealand (NZ) grid has been used in this thesis to …
-
Development of a System for Testing Grid-connected Doubly Fed Induction Generators with Implementation of a Three-level Neutral-Point-clamped Converter
… wind turbine power generation technologies, the doubly fed induction generator (DFIG) has been distinctively popular for its lower capital costs especially in higher power applications. In order to study the integration of this type of generator into the grid, a laboratory based DFIG test rig was …
-
Power System Dynamic Control and Performance Improvement Based on Reinforcement Learning
… based inter-area oscillation damping system, Doubly-fed Induction Generator (DFIG) based Fault-Ride-Through (FRT) system, and modified IEEE-39 Bus based frequency regulation system. In the case of the HVDC-based system, the proposed GSES-based power oscillation damping control approach …
-
Enabling wind turbine generators to participate in power grid frequency regulation for enhanced stability
… scheme is developed for the wind turbine/generator/converter trio that will provide the capability to participate in restoring frequency in a way similar to the droop response of conventional generators. Output active power adjustment can be realized by both converter and pitch angle …
-
DFIG-Based Split-Shaft Wind Energy Conversion Systems
… instead of the traditional gearbox and uses a Doubly-Fed Induction Generator (DFIG) instead of a synchronous generator. This type of wind turbine provides several benefits, including decoupling the shaft speed controls at the turbine and the generator. Hence, maintaining the generator’s …
-
Bit-Stream Control of Doubly Fed Induction Generators
… technology, especially wind generation. The Doubly Fed Induction Generator (DFIG) is commonly used for wind generation applications as it allows for efficient operation of the wind turbine by varying the speed of the generator without resorting to the use of large power converters. A typical …
-
Advanced control in smart microgrids
… generation (DG) sources, such as wind turbine generators and solar photovoltaic (PV) panels, are being connected to low-voltage distribution networks. Because of the intermittent nature of the renewable energy sources, it would be a good idea to connect these DG units together with energy …
Page 1 of 2