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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 20 of 20 for “"Induction generators"”.
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Transient Response of Induction Generators
Made available in DSpace on 2014-12-04T21:02:50Z (GMT). No. of bitstreams: 1 0015188.pdf: 1089968 bytes, checksum: e2d0289c654f3cece341ef16171d419f (MD5) Previous issue date: 1955
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Protection of synchronous generators and induction generators
… Protection) that can protect the synchronous generators and induction generators securely and dependably when they have internal faults. Specifically, the EBP function monitors the consistency between the generator measurements and the generator dynamic model via dynamic state estimation. Any …
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Bit-Stream Control of Doubly Fed Induction Generators
… 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 DFIG system …
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Multiple Three-Phase Induction Generators for Wind Energy Conversion Systems
… ripple. This thesis examines use of a multiphase induction generator in wind energy conversion systems (WECS). In particular, multiphase generators that comprise multiple 3-phase winding sets, where each winding set is supplied using an independent 3-phase voltage source inverter (VSI), are …
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Induction generators in mini and micro hydro applications as a low cost alternative
… with the chief concern of investigating induction generators as a viable alternative. A method of reconfiguring the static excitation of a self-excited induction generator is studied to supply a single-phase or an unbalanced three-phase load using a standard three-phase machine. This …
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Modeling of doubly-fed induction generators connected to distribution system based on eMEGASim® real-time digital simulator
… bed for a wind farm composed of six doubly-fed induction generators (DFIGs) connected to a distribution system based on the OPAL-RT’s eMEGASim® real-time digital simulator. The system in this research consists of a 9 MW wind farm, an average SimpowerSystems® DFIG wind turbine, connected to a …
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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
… 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 developed …
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Excitation and control of a high-speed induction generator
… the use of a high speed, squirrel cage induction generator and power converter for producing DC electrical power onboard ships and submarines. Potential advantages of high speed induction generators include smaller size and weight, increased durability, and decreased cost and …
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Design and implementation of variable speed wind energy induction generator systems for fault studies
… operational and maintenance costs of these wind generators. The most efficient way of reducing these costs is by the early detection of the degeneration of these generators health, thus facilitating a proactive response, minimizing downtime, and maximizing productivity. The more common induction …
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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 …
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Dsp Implementation Of Dc Voltage Regulation Using Adaptive Control For 200 Kw 62000 Rpm Induction Generator
… loop system to control the DC voltage for 200 kW induction generator rated at a speed of 62000 RPM under different load conditions. The voltage regulation has been implemented using PI controller. A gain scheduling control algorithm has been developed to select the appropriate controller gains …
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Operational behavior of a double-fed permanent magnet generator for wind turbines
… output frequency should be synchronous and Induction machines on their own do not allow for variable ratio of shaft speed to electrical frequency. Permanent Magnet (PM) machines have major advantages: Efficiency and power density are both high: they are also inherently synchronous. A …
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Subsynchronous Resonance in Wind Farms
… cause subsynchronous resonance (SSR) in turbine-generators, which can lead to electrical instability at subsynchronous frequencies and potential turbine-generator shaft failures. This thesis deals primarily with the potential of subsynchronous resonance in induction generator based wind farms …
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Nonlinear transient and steady state analysis for self-excited single-phase synchronous reluctance generator
… and renewable energy sources, self-excited induction and synchronous reluctance generators have attracted more attention for wind, tidal and hydro power generation applications. Compared to synchronous and DC generators, they have the advantages: they are brushless, they are robust, they do …
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The application of advanced signal processing techniques to the condition monitoring of electrical machine drive systems
… of mechanical imbalances in inverter-fed induction machines. The fault frequency components for induction machines are dependant on two variables, unlike the single variable dependence by permanent magnet machines. This poses too much of a challenge for the predictive capability of the …
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The application of advanced signal processing techniques to the condition monitoring of electrical machine drive systems
… of mechanical imbalances in inverter-fed induction machines. The fault frequency components for induction machines are dependant on two variables, unlike the single variable dependence by permanent magnet machines. This poses too much of a challenge for the predictive capability of the …
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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.
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Regelungstechnische Konzepte zur Integration alternativer Erzeugungsanlagen in lokale Energieversorgungsnetze unter besonderer Berücksichtigung der Systemstabilität
In zukünftigen Elektroenergiesystemen wird die dezentrale, häufig auf erneuerbaren Quellen basierende Energieversorgung eine große Bedeutung einnehmen. Die wachsende Präsenz der dezentralen Erzeugung in verschiedenen Spannungsebenen des elektrischen Netzes erfordert neue Konzepte zur Regelung des …