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The „BARD 5.0” is a wind energy converter in the 5 megawatt class specially developed for use under rough offshore conditions.
The rotor shaft revolves in a double-row tapered roller bearing mounted together with the gearbox on the main bearing made of vibration-damping nodular graphite cast iron.
The three-bladed rotor is positioned conventionally to the windward side. The „BARD 5.0“ achieves its nominal output even in a light breeze and only has to be powered down in heavy storms.
Five azimuth drive systems between the tower and the nacelle ensure that our wind energy converters always track the wind at the right angle. Their nominal performance is controlled by the pitch angle of the rotor blades. The rotor adjustment system is battery buffered and thus able to rotate the blades in idle mode even in the event of a power failure.
Technical data | |
|---|---|
Cut in windspeed (vin) | 3 m/s |
Nominal windspeed (vr) | 12,5 m/s |
Tip speed ratio | 8,0 |
Cut out windspeed vout | 25 m/s |
Cut out windspeed vA | 30 m/s |
Expected lifespan | 20 Jahre |
Type class | TC 1C |
Case | 14 x 8 x 8,5 m |
Total weight | 280 t |
Generator | |
|---|---|
Rated power | 5.276,2 kW |
Rated torque | 42,9 kNm |
revolutions | 1.212 U/min. |
Efficiency at rated power | 0,968 |
Type | Doubly fed asynchronous generator |
The Gearbox | |
|---|---|
Type | 2 planetory stages, 1 spur wheel section |
ratio | 96.965 |
Rated power | 5.630 kW |
Rated torque | 4.301,3 kNm |
Efficiency at rated power | 0,970 |
