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Alignment of wind turbine gearbox and generator

Wind Turbine Shaft Alignment

We can quickly and safely align your wind turbine generators and shafts using the latest Laser alignment technology. The equipment is capable of aligning gearboxes to generators and to check for Yaw. We use a revolutionary Laser

Testing and modelling of a 2.5 MW wind turbine gearbox

This study aimed to evaluate the efficiency of different ISO VG 320 oil formulations used in a 2.5 MW wind turbine gearbox. Two commercially available lubricants, a mineral oil and a polyalphaolefin (PAO) lubricant, were tested under realistic operating conditions using a customized test rig.Measurements showed that the overall efficiency of the mineral

EGO GE

The ECO GE is custom-made with firmware and fixtures designed specifically for GE 1.5x and 2.5x. These precisely designed fixtures make generator-to-gearbox alignment easy inside any nacelle – safeguarding reliability and optimizing the energy efficiency of the wind turbine.

Wind Turbine Alignment – ROTOR

Wind Turbine Alignment is normally done by treating the gearbox as the stationary machine, and the generator as the moveable machine. The misalignment is measured almost exclusively with a laser shaft alignment tool.

Overcoming Shaft Alignment Challenges in Wind Turbines

The gearbox, generator, and other critical components of a wind turbine depend on the proper alignment of the gearbox shaft with the generator shaft. Misalignment can cause vibration, premature bearing wear, and even lead to cracks in key components, resulting in operational failure.

Troubleshooting Wind Gearbox Problems | Gear Solutions

Generator Components. Most wind turbine generators are designed to run at a fixed speed so that the AC electricity is generated at the required frequency. Typically, the components of a large wind turbine generator driveline are the rotor, hub, input shaft, gearbox, disc brake, and generator (see Figure 1).

FAILURE ANALYSIS OF BEARING IN WIND TURBINE GENERATOR GEARBOX

Bioinfo Publications 302 FAILURE ANALYSIS OF BEARING IN WIND TURBINE GENERATOR GEARBOX Journal of Information Systems and Communication ISSN: 0976-8742 & E-ISSN: 0976-8750, Volume 3, Issue 1, 2012

Shaft Alignment Made Easy | Wind Energy Blog

After pre-alignment is completed we need to mount the lasers on the gearbox brake disk and generator coupling hub. This step is extremely easy. The GO Wind and XA Wind kits by VibrAlign are configured with customized magnetic mounting hardware for each OEM''s turbine design, including GE, Siemens, Gamesa, Mitsubishi, Vestas, Nordex, and Suzlon.

Wind Turbine Alignment in High Winds

Precision alignment in wind turbines

Of all the mechanical maintenance problems in wind turbines, shaft alignments are probably easiest to understand. The high-speed shaft between a gearbox and generator is a critical point of failure. Their

WIND TURBINE GEARBOX TECHNOLOGIES

electrical generators for wind turbines are not viable in the far-term and an automated winding process of annular generators must be given serious design and investment consideration. 6. GEARBOX DESIGN OPTIONS . The weakest link of a size wind turbine has been utility their gearbox. As turbine sizes increased, the design gearboxes able of

Shaft Alignment & Wind Power

Shaft Alignment & Wind Power. The FIXTURLASER shaft alignment instruments are custom made with firmware features that ensure high measurement accuracy and with mounting hardware that is ideally suited for optimal alignment of

Conquering Turbine Shaft Alignment | Wind Systems

Wind turbines are notoriously flexible structures. Thus, changes in wind speed and direction, generator load, and temperature can have a very significant effect on the shaft alignment between the gearbox and generator.

Wind Turbine Alignment – ROTOR

A generator, which is coupled to the output shaft of the gearbox. The generator''s stator rotates, changing the wind energy to electricity. Proper shaft alignment of a wind turbine is critical for these reasons: Wind turbines are attached to the tops of tall masts, often several hundred feet in the air. They must be engineered to withstand

Wind power industry, measurement and alignment

Alignment of generator and gearbox. Learn more about our shaft alignment systems for wind turbines. Flatness measurement of tower flanges. If flatness measurement of the flanges is difficult depends, among other things, on the diameter of the tower. Smaller diameters (up to 4 meters) are usually straightforward to measure.

Facing the Wind: Overcoming Shaft Alignment Challenges in Wind Turbine

Detecting generator defects in wind turbines

Misalignment between gearbox and generator is the first common problem. Paul Berberian of Easy Laser, a company that manufacturers wind turbine alignment tools, explains, "Misalignment is easy to detect and correct, but there are no standards per se because everything moves around so much.

Overcoming Shaft Alignment Challenges in Wind Turbines

Thermal Growth. Wind turbine generators experience significant temperature fluctuations due to variable wind speeds and operational loads. As a result, components like the gearbox and generator undergo thermal expansion, which can shift the alignment of the shafts, if left unattended Traditional alignment methods that do not account for thermal growth often

Wind Turbine Alignment in High Winds | Nexxis USA

Wind Turbine Gearbox Technologies

The failure of wind turbine gearboxes may be traced to the random gusting nature of the wind. Even the smallest gust of wind will create an uneven loading on the rotor blades, wind turbine generator. By increasing the number of magnetic pole pairs in a generator from the 4 or 6 of conventional generators to 100 or more, the need for a

Shaft alignment made eaSy

fig. 2: pre-alignment duties involve taking off the coupling guard, and Correction #2 in some cases installing a turning gear and a rotor lock so brake will remain disengaged. and/or gearbox. In other words, the GO Wind knows where the generator and gearbox are sit-ting even when the generator is pushed, pulled, or lifted through

ECO VESTAS

These precisely designed fixtures make generator-to-gearbox alignment easy inside any nacelle – safeguarding reliability and optimizing the energy efficiency of the wind turbine. that ensure high measurement accuracy and with mounting hardware that is ideally suited for optimal alignment of the gearbox and generator shafts in wind turbines.

HOW TO SAFELY ALIGN WIND TURBINES

The example gear generator wind turbine illustrates the importance of occupational safety. We all agree that an extremely heavy wind turbine rotor with a rotor blade diameter of well over one hundred or even two hundred meters generates tremendous forces on the generator shaft already at a low rotational speed – especially when

Wind Turbine Alignment in High Winds | Nexxis USA

Precision alignment of the generator to the gearbox in a wind turbine (the high speed shaft) is critical to proper operation. 60 percent of wind turbine downtime is related to drive train failure: gearbox, generator, main shaft, and their associated bearings. We also know from industry studies that misalignment of rotating machinery is responsible for more than half of all

Generator & Gearbox Initial & Re-Alignments – Aim

Correct initial settings and regular alignment of the generator and transmission systems of wind turbines are critical to increase the efficiency and reliability of the plant. These processes are initiated during the installation of the turbines and

Working Principle of Wind Turbine

Key learnings: Wind Turbine Definition: A wind turbine is defined as a device that converts wind energy into electrical energy using large blades connected to a generator.; Working Principle of Wind Turbine: The turbine blades rotate when wind strikes them, and this rotation is converted into electrical energy through a connected generator.; Gearbox Function:

Precision Turbine Shaft Alignment | Wind Systems

It is critical to be able to prevent mechanical failure in a wind turbine whenever possible. We see from the chart in Figure 1 that 60 percent of wind turbine downtime is related to drive train failure: gearbox, generator,

Alignment of wind turbine gearbox and generator [PDF]

6 FAQs about [Alignment of wind turbine gearbox and generator]

How can a wind turbine generator be aligned?

We can quickly and safely align your wind turbine generators and shafts using the latestLaser alignment technology. The equipment is capable of aligning gearboxes to generators and to check for Yaw.

Why should a wind turbine shaft be aligned?

Properly aligned shafts are able to spin freely and not induce other unwanted forces to the system. These unwanted forces will damage and/or destroy bearings, seals, and couplings, and eventually the gearbox or generator. Precision alignment is recommended by most wind turbine manufacturers for optimal operation and reliability.

Do wind turbines need to be aligned?

Precision alignment is recommended by most wind turbine manufacturers for optimal operation and reliability. Generator efficiency can also be affected by misalignment (angular and offset). The following questions—and answers—will help you to enhance the productivity and longevity of your turbine. What needs to be aligned in a wind turbine?

How long does it take to align a wind turbine?

The first turbine was aligned early in the morning in moderate wind speeds of approx. 2-5 m/s, the alignment went smoothly and we completed the alignment in about 45 minutes with excellent alignment results. The second turbine proved to be challenging. After lunch, the wind had picked up a little but was still acceptable.

What is a wind turbine alignment fixture?

A wind generator alignment fixturemounted on a generator flange. This Laser alignment fixture will fit on most Siemens turbines. A wind turbine fixture which can be mounted on a brake disc with a magnetic base. This is a flexible laser fixture that will fit on most Siemens turbines.

When should a turbine alignment be performed?

Anytime a gearbox or generator is replaced, an alignment should be performed. Because of the movement of the tower and other dynamic forces, a best practice is to re-check the alignment six months after the initial install and a minimum of every year after. Consult your turbine’s maintenance manual for recommendations.

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