Results 21 to 30 of about 44,104 (310)

Permanent magnet generators for renewable energy devices with wide speed range and pulsating power delivery [PDF]

open access: yes, 2009
This paper describes the design of a direct-drive permanent-magnet generator for use in a novel sea-wave electrical generator. The basic system is briefly described and the target specification derived from the device and the wave tank performance.
Dorrell, DG
core   +1 more source

Power Extraction Strategy of a Robust kW Range Marine Tidal Turbine Based on Permanent Magnet Synchronous Generators and Passive Rectifiers [PDF]

open access: yes, 2014
This paper presents a kW range marine tidal current power generation system consisting of a fixed pitch marine current turbine (MCT) with two permanent magnet synchronous generators in the turbine shaft, two diode rectifiers (each rectifier is associated
CHARPENTIER, Jean-Frederic   +2 more
core   +2 more sources

Ventilation structure design and heat transfer analysis of 3.3MW permanent magnet direct drive wind generators

open access: yesEnergy Reports, 2022
For megawatt permanent magnet direct drive wind generator, with the increase of its power level, the insulation of the motor may be threatened by the increase of operating temperature, which may also lead to the irreversible demagnetization of permanent ...
Zhen Zhao   +3 more
doaj   +1 more source

Comparison of multiple stage braking circuits for wind driven generators [PDF]

open access: yes, 2016
This paper presents multiple stage braking circuits for wind turbines with a permanent magnet synchronous generator. The system combines both passive converter circuit coupled to a resistive braking circuit.
Valchev, Vencislav Cekov   +2 more
core   +1 more source

Compatibility of electrical generators for harvesting extended power from wind energy conversion system

open access: yesMeasurement + Control, 2019
In this paper, a comparative study between the two generator types with wind energy conversion system is proposed. The two generator types are doubly fed induction generators and permanent magnet synchronous generators.
Dhas Bensam Samraj   +1 more
doaj   +1 more source

Design and Optimization of Permanent Magnet Flux-Switching Generator Arrangement Spoke by Taguchi Method for Direct-Drive Wind Turbines [PDF]

open access: yesAUT Journal of Electrical Engineering
Due to the unique structure of Permanent Magnet Flux Switching Generators (PMFSG), which involves the interaction of permanent stator magnets and rotor teeth, the generated cogging torque is higher compared to that of other permanent magnet machines ...
Pouria Nadri, Mohammad Reza Besmi
doaj   +1 more source

The Effects of Cogging Torque Reduction in Axial Flux Machines

open access: yesMicromachines, 2021
An axial flux permanent magnet single-rotor generator has good potential in various applications that require high efficiency, prolonged service life, as well as low mass and dimensions.
Samuel Mengesha   +3 more
doaj   +1 more source

Prototype of an axial flux permanent magnet generator for wind energy systems applications [PDF]

open access: yes, 2007
Small scale wind power applications require a cost effective and mechanically simple generator in order to be a reliable energy source. The use of direct driven generators, instead of geared machines, reduces the number of drive components, which offers ...
Costa, A.F.   +2 more
core   +1 more source

Integrated Optimal Design of a Passive Wind Turbine System: An Experimental Validation [PDF]

open access: yes, 2010
This work presents design and experimentation of a full passive wind turbine system without active electronic part(power and control). The efficiency of such device can be obtained only if the system design parameters are mutually adapted through an ...
Espanet, Christophe   +3 more
core   +4 more sources

Analysis and design of surface permanent magnet synchronous motor and generator

open access: yesCES Transactions on Electrical Machines and Systems, 2019
This paper presents an analytical method to design the high-efficiency surface permanent magnet synchronous motor (SPMSM) or generator (SPMSG). The air-gap and permanent magnet size can be approximately determined based on our mathematics model, which is
Chengyuan He, Thomas Wu
doaj   +1 more source

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