Wind turbine generator failure analysis and fault diagnosis: A
Generator rotor faults mainly include rotor winding faults and rotor body faults. The main reason for rotor winding failure is due to the grounding and inter-turn short circuit
From academic to industrial research: A comparative review of
The reliability of critical wind turbine components like the generator, the gearbox and the rotor depend on the use of efficient bearings. The outer ring serves as housing for
RING-GENERATORS FOR HIGH POWER APPLICATIONS
New concepts for Ring-Generators Lightweight Ring Generators can be used for several applications. A highlight is the construction and electromagnetic layout of the generator for
Study of the double rotor double machine wind turbine
The speed regulating wind turbine adopts the principle of direct grid connection of generator similar to traditional hydropower and thermal power generation, that is, the speed
Correlation of Planetary Bearing Outer Ring Creep and Gear Load
Correlation of Planetary Bearing Outer Ring Creep and Gear Load Distribution in a Full-Size Wind Turbine (rotor- or generator sided bearing) where the "pre-loadzone" tooth engagement
Design optimization of inner and outer‐rotor PMSGs
Two types of generators are commonly used in wind turbines; induction generators and PMSGs. Recently, PMSGs are widely preferred due to their high-power densities. Furthermore, they are low in space occupancy,
Study of double rotor speed-regulating wind power generation
Large-scale wind turbines have become the trend of the wind power industry. However, the main factors restricting the large scale wind turbines are frequent replacement of
Design and finite-element analysis of an outer-rotor
Many studies have published the outer-rotor design for other machine types and applications like outer-rotor permanent magnet generator for directly coupled wind turbines
Outer rotor eddy current heater for wind turbines
Fig. 1. ORPMECH for wind turbines; (a) outer rotor of the device equipped with PMs; (b) inner stator of the device (steel tube serpentine); (c) vertical axis wind turbine with its hub mounted
Wind turbine foundation ring fatigue reliability analysis under wind
ABAQUS is utilized to conduct finite element modeling and analysis of a 5 MW wind turbine generator. The main parameters of the wind turbine are as follows. The height of
Operating Conditions of a Main Bearing Contact in a Commercial Wind Turbine
DTU Wind DVST measurements: outer ring temperature, acoustic emission Photo by Mark Dunn, NREL 65814. Generator-side (GS) Rotor-side (RS) 0º GS DVST. 270º GS DVST. Photo
Analysis and Design of a Permanent-Magnet Outer-Rotor Synchronous
Turbin vertikal dikopel dengan generator dengan rotor sisi luar (outer rotor). Keuntungan dari penempatan rotor sisi luar adalah baling-baling dapat langsung tersambung
Modeling and Control Strategies for DFIG in Wind
A DFIG is characterized by a wound rotor and three slip-ring induction machines, with the stator winding directly connected to the power grid and the wound rotor interfaced with the grid through a 3-phase AC/DC/AC
Axial-Flux Permanent-Magnet Dual-Rotor Generator for a
Coaxial counter-rotating propellers have been widely applied in ships and helicopters for improving the propulsion efficiency and offsetting system reactive torques.
Electromagnetic Performance Analysis of Wind Power Generator With Outer
Electromagnetic Performance Analysis of Wind Power Generator With Outer Permanent Magnet Rotor Based on Turbine Characteristics Variation Over Nominal Wind
(PDF) Investigation of Inner/Outer Rotor Permanent
In this paper two permanent magnet flux switching generator (PMFSG) are designed for 2 kW output power and 220 V phase voltage at 1500 rpm and comparatively analyzed for wind power application.
Design and verification of a novel double rotor without stator wind
The double rotor wind turbine generation system is mainly composed of 1-wind wheel, 2-speed increasing gearbox, 3-double rotor machine (DRM), 4-electrically excited
(PDF) Axial-Flux Permanent-Magnet Dual-Rotor Generator for a
Counter-rotating dual-rotor axial flux permanent magnet (CRDRAFPM) motors are one of the types of synchronous motors that have higher power density and reliability in
Correlation of Planetary Bearing Outer Ring Creep and
In this work, bearing outer ring creep in the planetary gear of a gear wind turbine gearbox is investigated. So far, gear creep has only been investigated experimentally on very small bearings
Optimised designs of rotor bearings for wind turbines
The inner rings are flange-mounted to the rotor, while the outer ring is flange-mounted to the nacelle of the wind turbine. The bearing clearance is preset, which significantly reduces logistics and mounting costs. In order to
Simulation based prediction of ring creep on a planetary bearing
Ring creep describes a relative movement of the outer ring to the planetary gear. in the bearing seat of the rotor-side and generator-side planetary bearing for 330 kNm rotor
Generating characteristics and experimentation of
The issues of slip ring have been overcome in ref., however, counter rotation is obtained by coupling two generators such as inner three-phase PM Synchronous Generator (PMSG) and an outer three-phase Induction
Design optimization of inner and outer‐rotor PMSGs for X‐ROTOR wind
Two types of generators are commonly used in wind turbines; induction generators and PMSGs. Recently, PMSGs are widely preferred due to their high-power
Shrouded wind turbine with rim generator and halbach array
A wind turbine comprises a turbine shroud and optionally an ejector shroud. The wind turbine encloses a permanent magnet ring generator. A static ring of phase windings is located in the
Inner-Rotor And Outer-Rotor PMSG Designs for Novel Offshore Wind Turbines
This paper presents a detailed design methodology for the inner and outer rotor structures of Permanent Magnet Synchronous Generators (PMSGs) for the novel X-rotor
6 FAQs about [Wind turbine generator rotor outer ring]
What are the components of a wind turbine?
This contains all the components that sit on top of the tower, except the rotor system. It includes main shaft, gearbox, generator, brake, bearings, nacelle frame, yaw mechanism, auxiliary crane, hydraulic system, and cooling system. 1. Rotor System The rotor system captures wind energy and converts into rotational kinetic energy.
What is a gearbox in a wind turbine?
A gearbox is typically used in a wind turbine to increase rotational speed from a low-speed rotor to a higher speed electrical generator. A common ratio is about 90:1, with a rate 16.7 rpm input from the rotor to 1,500 rpm output for the generator.
What is a wind turbine rotor shaft made of?
The stated potential of GJS manufactured in permanent metal moulds and its unknown specific material properties led to the research project “Gusswelle”. The main objective is the optimization of design possibilities for wind turbine rotor shafts. Therefore, a raw hollow rotor design shaft made of EN-GJS-400-18-LT chill cast is developed.
Can lightweight rotor shaft design be used in a wind turbine?
Through the application of the lightweight design methodology to the rotor shaft for a wind turbine, 20% material could be saved in the trumpet section of the optimized hollow rotor shaft in comparison to the raw design, but with fulfilment of the failure criterion.
Is inner ring creep relevant for hollow rotor shafts of wind turbines?
Therefore, inner ring creep is highly relevant for hollow rotor shafts of wind turbines with thin walls and low contact pressure. The prediction methodology for inner ring creep used in this case is based on the finite element simulation of the main shaft fatigue test bench.
How to improve the efficiency of a wind turbine?
The wind turbine is either vertical axis or horizontal axis wind turbine. To increase the efficiency the gear driven generator has been replaced by directly driven generator. This paper recounts the design optimization of inner and outer rotor permanent magnet synchronous machine of rating 500 KVA, 3.3 kV, 3-phase, and 600 rpm.