Photo courtesy of Romax Technology

What are the problems and solutions to better gearbox reliability?

This section submitted by Ashley Crowther, Global VP – InSight, Romax Technology Modern gearboxes provide greater reliability to the wind-energy industry thanks to improvements in their design and operation. These include better bearing selection, design process, manufacturing quality, transportation, lubrication systems, and end-of-line testing. Reliability issues will never completely go away, but staying on top of

The Moventas Senior Engineer answers one question a week. To read previous questions and answers, or to ask one,  see the url below.

Moventas’ Senior Engineer answers gearbox questions

The Senior Engineer column has been in the wind industry since the 1980’s. The column’s author has spent his entire career in power transmission and knows darn near everything there is to know about gearboxes. In an industry as young as ours, he says, there are false beliefs that he wants to correct. Because all

A leading renewable-energy underwriter employs O&M claims data to assess major cause of turbine failure in global wind industry.

GCube gets to grips with grinding gearboxes

Specialist renewable-energy underwriter GCube Underwriting Limited has published an in-depth report, entitled Grinding Gearboxes, analyzing gearbox failure by addressing root cause, financial impact and proactive steps to mitigate the frequency and severity of downtime. As the central component of the drive system, the gearbox has always been a critical interface and constitutes 13% of the overall value

The HybridDrive combines combining a two-stage-planetary gearbox and a generator into an integrated drive train.

Winergy 3.3 MW HybridDrive wins award: Best wind turbine drivetrain

Windergy’s 3.3 MW HybridDrive has won recognition from Windpower Monthly as the Best wind turbine drivetrain. The publication bestowed the award because the company introduced journal bearing technology and lets customers choose between a permanent magnet or conventional electrically excited generator. “There is a growing interest in gearboxes incorporating journal bearings as operators look for

GBX CFO Brian Hastings (blue sweater holding drawing) explains the high speed shaft drawing details while GBX technicians demonstrate how to remove the HSS assembly from the gearbox housing.

What I learned in gearbox technology class

You might think it strange that a company with the mission of repairing and improving wind-turbine gearboxes would share what it has learned about the machines. But that is exactly what Gearbox Express and Romax Technology did recently with me, and many others throughout the year. It’s good for the wind industry. After two days of

Gearbox Express is building a new, 75,000 square foot manufacturing facility south of Mukwonago, Wisc.

Gearbox Express’ 75,000 ft-sq planned facility doubles current plant

Gearbox Express (GBX), the only independent company in North America focused on providing down-tower, wind gearbox remanufacturing services, is building a new, 75,000 square foot manufacturing facility south of Mukwonago, Wisc. Founding partner and CEO Bruce Neumiller, CEO, cites lack of capacity to support the company’s growth as the major reason. “When we started operations

Moventas A look inside the Exceed

Moventas provides an update on its 3 MW Exceed gearbox

The Exceed prototype assembly is proceeding in the developer’s Jyväskylä factory. As a result of the design work to make Exceed as lightweight and small as possible, the outer diameter of this helical stage is almost as small as those of kilowatt class gearboxes, although this the Exceed is rated at 3 MW+. In addition

Nrel table overall cost results

How tip velocity affects wind turbine design

This study conducted by NREL engineers, investigates the effect of tip-speed constraints on system levelized cost-of-energy (LCOE). The results indicated that a change in maximum tip-speed from 80 to 100 m/s could produce a 32% decrease in gearbox weight (a 33% reduction in cost), which would result in an overall reduction of 1 to 9%

Gearbox sizing for different speed ratio requirements driven by different maximum allowable tip speed constraints.

Sandia and NREL collaborate on the impact of tip speed constraints on wind turbine design and plant cost of energy

NREL and Sandia recently published two reports on their collaborative effort to study the effects of increased maximum allowable blade tip velocities on overall system cost and performance. The maximum rotor rotation speed for utility-scale wind turbines is generally constricted by noise considerations. Even so, innovations in acoustics or siting in remote locations or both

The Moventas mobile service unit performs repairs on-site reducing costs associated with wind-turbine maintenance.

Moventas announces mobile workshop tour in North America

Moventas, a wind gear manufacturer and service provider, has announced a multicity tour of the company’s innovative mobile workshop in North America. The tour started from Spearville, Kansas last week. During the Mobile Workshop Tour, wind farm owners and operators will have the opportunity to see the self-contained, climate controlled workshop first hand and gain