Model guide
Vestas V110-2.0 MW
The large-rotor member of Vestas’ 2 MW platform for low-wind sites: 2.0 MW rated power, 110 m rotor, 54 m blades. A classic geared architecture with a doubly-fed (slip-ring) generator; in the field most of the time goes into the gearbox oil system, the hydraulic pitch and the generator slip-ring side.
What defines this model
The V110 grows the rotor instead of the rating. A 2.0 MW ceiling on a 110 m rotor gives a turbine that reaches useful power early in light wind and targets a high capacity factor. Wind class IEC IIIA.
The architecture is familiar: rotor → main shaft → gearbox → high-speed shaft → doubly-fed generator. The stator connects directly to the grid, the rotor through slip rings to a partial-power converter. Each blade is pitched by its own hydraulic cylinder.
Key technical data
| Parameter | Value |
|---|---|
| Rated power | 2.0 MW |
| Rotor diameter | 110 m |
| Blade length | 54 m |
| Hub height | 80 / 95 / 125 m (by grid frequency and package) |
| Cut-in | 3 m/s |
| Rated wind speed | 11.5 m/s |
| Cut-out | 20 m/s |
| Wind class | IEC IIIA |
| Gearbox | 1 planetary + 2 helical stages |
| Generator | Doubly-fed with slip rings; 4-pole (50 Hz) |
| Pitch | Full-blade feathering, one pitch cylinder per blade |
| Tower | Tubular steel |
Drivetrain and systems
Gearbox and oil system
- One planetary and two helical stages step the main-shaft speed up to generator speed.
- What gets checked most: oil level and temperature trend, filter differential pressure, oil samples (metals and water), seals, and vibration trends for the bearings.
- A temperature that drifts up at the same wind speed matters more than any single absolute value.
Doubly-fed generator (DFIG)
- The rotor winding reaches the converter through slip rings and brushes, so brush wear, brush dust and slip-ring surface are periodic checks.
- Because the stator is tied directly to the grid, grid events (voltage dips, imbalance) can come back as generator or converter faults.
Hydraulic pitch
- A pitch cylinder turns each blade; pressure, accumulator pre-charge and hose and fitting tightness decide the health of the system.
- The accumulators hold the energy to feather the blades on grid loss; testing them is a safety item that should never be skipped.
V110 and V126 (Vestas)
| Item | V110-2.0 MW | V126-3.45 MW |
|---|---|---|
| Rated power | 2.0 MW | 3.45 MW |
| Rotor diameter | 110 m | 126 m |
| Gearbox | 1 planetary + 2 helical | 2 planetary + 1 helical |
| Generator / converter | Doubly-fed, partial converter | Full-scale converter |
| Pitch | Hydraulic cylinder | Hydraulic cylinder |
Maintenance topics that matter in the field
- Hydraulic leaks in the hub and nacelle: a small drip becomes a dirty hub and an out-of-spec accumulator over time.
- A slow rise in gearbox oil temperature: filter, cooler radiator and oil level are checked together.
- Brush dust in the generator slip-ring compartment: cleaning and brush-length measurement are routine.
- Yaw brake pads and gear lubrication: the first place to look for hunting and noise complaints.
Sources
Warning: Every job in the nacelle, hub and tower follows lockout–tagout (LOTO), rotor lock and the manufacturer’s safety instructions. This page is field experience and published data; it does not replace the service documentation.