Journal ArticleDOI
Direct coupled, permanent magnet generators for wind turbine applications
E. Spooner,A.C. Williamson +1 more
- Vol. 143, Iss: 1, pp 1-8
TLDR
In this article, Ferrite permanent magnets with flux concentrating pole pieces are used as direct coupled generators in wind turbines and can be built to fit within the confined space of a nacelle.Abstract:
Multipole radial field machines with permanent magnet excitation can be used as direct coupled generators in wind turbines and can be built to fit within the confined space of a nacelle. High efficiency and power factor are maintained over a wide range of operating power. Ferrite permanent magnets with flux concentrating pole pieces are preferred to rare earth types because of their lower cost. The primary brake for the wind turbine can be electrical since the permanent magnet excitation is available in the absence of an external supply.read more
Citations
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Journal ArticleDOI
Control of permanent-magnet generators applied to variable-speed wind-energy systems connected to the grid
TL;DR: In this article, the operation and control of a variable-speed wind generator is described, which is connected to the power network by means of a fully controlled frequency converter, which consists of a pulsewidth modulation (PWM) rectifier, an intermediate dc circuit, and a PWM inverter.
Journal ArticleDOI
Overview of different wind generator systems and their comparisons
TL;DR: An overview of different wind generator systems and their comparisons are presented in this article, where the quantitative comparison and market penetration of different WG systems are presented. And the developing trends of wind generator system and appropriate comparison criteria are discussed.
Journal ArticleDOI
PM wind generator topologies
TL;DR: In this article, a comparison of permanent magnet (PM) wind generators of different topologies is presented, and seven configurations are chosen for the comparison, consisting of both radial and axial-flux machines.
Journal ArticleDOI
A Novel Control Scheme for Current-Source-Converter-Based PMSG Wind Energy Conversion Systems
Jingya Dai,Dewei Xu,Bin Wu +2 more
TL;DR: In this paper, a control scheme for a permanent magnet synchronous generator is proposed, where a current-source converter is employed as the bridge between the generator and the grid for high-power wind energy conversion systems.
References
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Book
Wind energy systems
Gary L. Johnson,P. M. Moretti +1 more
TL;DR: In this article, the authors present the papers given at a workshop on wind turbines, including aerodynamics, load conditions, Darrieus rotors, composite materials, turbine blades, fabrication, fiberglass, vibrations, wind power plants, control systems, data acquisition systems, performance testing, horizontal axis turbines, vertical axis turbines.
Journal ArticleDOI
TORUS' : a slotless, toroidal-stator, permanent-magnet generator
E. Spooner,B.J. Chalmers +1 more
TL;DR: Torus as discussed by the authors is a compact electrical machine particularly suitable for use as an engine-driven generator and which, when supplied via suitable switching circuits, can operate as a brushless DC motor to start the engine.
Journal ArticleDOI
Performance and application of multistacked imbricated permanent magnet generators
K.J. Binns,T.S. Low +1 more
TL;DR: The multistacked imbricated permanent-magnet generator has several significant applications and some of these are discussed in this paper, where the influence of design parameters is discussed, and many results are presented for a range of machines which have been constructed in collaboration with industry.
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An axial-flux permanent-magnet generator for a gearless wind energy system
B.J. Chalmers,E. Spooner +1 more