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.
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Showing 1 to 13 of 13 for “"Doubly Fed Induction Generator (DFIG)"”.
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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 …
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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 …
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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 …
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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 …
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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 …
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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 …
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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 …
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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 …
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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 …
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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 …
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Reactive power compensation of fixed speed wind turbines using a hybrid wind turbine technology
… for grid codes that require wind turbine generators to contribute to power control and stay online during a network disturbance. These revisions have resulted in technical migrations from the fixed speed wind turbine (FSWT) to the variable speed wind turbines (VSWTs). The fixed speed …
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Διερεύνηση της λειτουργικής συμπεριφοράς συστήματος μετατροπής αιολικής ενέργειας σε ηλεκτρική αποτελούμενο από ασύγχρονη μηχανή διπλής τροφοδοσίας και ηλεκτρονικούς μετατροπής ισχύος σε δυναμικές καταστάσεις
Η παρούσα διδακτορική διατριβή πραγματεύεται τη διερεύνηση της λειτουργικής συμπεριφοράς του αιολικού συστήματος με ασύγχρονη γεννήτρια διπλής τροφοδοσίας και ηλεκτρονικούς μετατροπείς ισχύος κατά τη διάρκεια ισχυρών δυναμικών καταστάσεων. Το κίνητρο για τη διερεύνηση αυτή ήταν η ανάγκη να …
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Integration improvement of DFIG-based wind turbine into the electrical grid
… Through (FRT) capability of the Grid-connected DFIG-based Wind Turbine. The first proposed approach is a hybrid method combining two methods (active and passive methods): The active method aims to develop the control of DFIG. In contrast, the passive method is applied for severe voltage faults …