Moventas makes repairs a breeze

Breakthrough up-tower products could be a game-changer

moventas logoMoventas, the Finnish energy company, introduced a new technology on Wednesday, releasing new patent-pending up-tower repair capabilities that the company says will save wind-farm owners significant downtime and expense.

Effective immediately, all failed ‘low-speed’ planetary stage gears and bearings in most GE 1.5-MW wind turbines can be repaired up-tower at a price that is a fraction of changing out the gearbox, according to the company. The new repair process has been demonstrated already on the leading gearboxes in the GE 1.5-MW turbines. In each repair, customers can opt for longer life components by upgrading the boxes up-tower from thru hardened ring wheels and old bearing design to state-of-the-art case carburized ring wheels and integrated planet wheel bearings. With these new repairs, gearboxes, which would otherwise run to catastrophic failure up-tower, have options for life extension.

A Moventas worker braves the elements to repair a turbine in Sweden.

A Moventas worker braves the elements to repair a tower in Sweden.

The main issue is expenses that arise when gearboxes fail up-tower, requiring replacement or maintenance at difficult heights. This would usually call for expensive crane usage and entire gearbox replacement.

The announcement follows German gearbox manufacturer Winergy’s revelation earlier this month that it had successfully trialed removal and replacement of a planet carrier bearing in the nacelle of a turbine.

The new technology will be released under the Moventas Americas line, to service the GE turbines at its new mid-western regional repair facility in St. Paul, Minnesota. These repairs are going to be popular with owners who want to avoid expensive cranes and their associated delays,” said James Macik, who leads the product development of all new up-tower repairs for Moventas Americas, which now has 4 facilities in North America (Oregon, Texas, and Ontario).

Moventas additionally offers uptower repairs for helical gearboxes, high speed pinion & bearings, intermediate and low speed assembly, and planetary sun pinions for a number of models.

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