Search for dissertations about: "wind turbine control system"
Showing result 1 - 5 of 43 swedish dissertations containing the words wind turbine control system.
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1. On the modelling and partial-load control of variable-speed wind turbines
Abstract : .... READ MORE
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2. Fundamental Control Performance Limitations for Interarea Oscillation Damping and Frequency Stability
Abstract : With the transition towards renewable energy and the deregulation of the electricity markets, the power system is changing. Growing electricity demand and more intermittent power production increase the need for transfer capacity. Lower inertia levels due to a higher share of renewables increase the need for fast frequency reserves (FFR). READ MORE
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3. Analysis, Modeling and Control of Doubly-Fed Induction Generators for Wind Turbines
Abstract : This thesis deals with the analysis, modeling, and control of the doubly-fed induction generator (DFIG) for wind turbines. Different rotor current control methods are investigated with the objective of eliminating the influence of the back electromotive force (EMF), which is that of, in control terminology, a load disturbance, on the rotor current. READ MORE
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4. Voltage sag ride-through of AC drives : control and analysis
Abstract : This thesis focuses on controller design and analysis for induction motor (IM) drives, flux control for electrically excited synchronous motors with damper windings (EESMs), and to enhance voltage sag ride-through ability and analysis for a wind turbine application with a full-power grid-connected active rectifier. The goal is to be able to use the existing equipment, without altering the hardware. READ MORE
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5. Synchronous generator and frequency converter in wind turbine applications : system design and efficiency
Abstract : This report deals with an electrical system for variable-speed wind powerplants. It consists of a synchronous generator, a diode rectifier and athyristor inverter. READ MORE