Doubly-Fed Induction Generator for Variable Speed Wind Energy Conversion Systems- Modeling & Simulation
Abstract— The aim of this paper is to present the complete modeling and simulation of wind turbine driven doubly-fed induction generator which feeds ac power to the utility grid. For that, two pulse width modulated voltage source converters are connected back to back between the rotor terminals and utility grid via common dc link. The grid side converter controls the power flow between the DC bus and the AC side and allows t ....etc

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A variable-speed controller, for an existing 225 kW fixed-speed wind power generator, is presented in this paper. A sensorless direct torque control algorithm-based controller is proposed for the squirrel-cage induction generator. Generator torque reference is derived based on sensorless maximum power tracking mode algorithm, up to the base speed of the generator. A three-phase front-end converter is used here to deliver the generated power to the grid with unity-power-factor operation at all wind speeds. This algorithm is based on direct activ ....etc

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ADVANCED ELECTRIC GENERATOR & CONTROL FOR
HIGH SPEED MICRO/MINI TURBINE BASED POWER SYSTEMS

INTRODUCTION

High-speed micro-turbines and mini-turbines play a significant role in the Distributed
Power Systems that provide dependable electric power close to the user. Several high-speed
turbo-generators manufactured by various corporations are now available in the 30 kW to 90 kW
range. These systems operate at speeds from 50000 RPM to 120000 RPM. The generator is
directly coupled to the turbine ....etc

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The History and State of the Art of
Variable-Speed wind Turbine
Technology

ABSTRACT
Early wind turbines used for performing mechanical work (pumping, grinding and cutting) optimized aerodynamics by being allowed to run at variable speed. Some of the earliest DC electric wind turbines were allowed to run at variable speed. With the advent of gridconnected AC turbines, rotational speeds were limited in order to control the wind turbine AC frequency output to equal the grid frequency. With the advent of se ....etc

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ENHANCED PERFORMANCE OF A DOUBLY FED
WIND-POWER INDUCTION GENERATOR AT WIND-
RANGE BOUNDARIES
ABSTRACT
The doubly fed induction generator (DFIG) is one of the largest generators used
with MW-class wind turbines. This paper focuses on the weak performance areas
of grid-connected DFIG-based wind turbines. Basically, the DFIG performance at
low wind speeds, close to the cut in speed, and around the full rating operation (in
the vicinity of rated wind speed) is investigated. For low wind speed region, the
c ....etc

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Dear sir, i am looking for the details of variable speed wind turbine controller design. Please provide the material on the same. Thanks ....etc

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respected sir,i m the student of b.tech in bundelkhand university.i m a student of final year in mechanical engineering & preparing project report on dual rotor wind turbine.so if u can give me some idea or matter about the topic,i will be highly grateful to u. ....etc

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DEAR SIR
I WANT TO THEORETICAL DATA ON MODELING AND CONTROL OF A VARIABLE SPEED WIND TURBINE EQUIPPED WITH PMSG AS SOON AS POSSIBLE ....etc

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A NEW INTERCONNECTING METHOD FOR WIND TURBINE/GENERATOR IN A WIND FARM
Presented by:
Aswin Das
EEE
College Of Engineering, Trivandrum



CONTENTS
Objectives
Introduction
Selection of site
New method
How system works
Basic equations
Measures against halt
Operating methods
Control strategies
Basic characteristics


OBJECTIVES
A new interconnecting method for wind turbine/generator is proposed.
Through this method electrical energy of ....etc

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