ENERGY-XS will introduce soon the XS series alternators for direct drive of VAWT's having the following outstanding characteristics:
- Exceptionally compact, allowing the design of wind turbines driven directly without gears and delivering up to 600 W/Kg power-to-weight and 2500W/dm3 and power-to-volume ratios.
- Low losses and high efficiency at rated speed.
- PMA design allows wind turbine to start at very low wind speed because of minimal cogging torque.
- Excellent energy production and load characteristics even at intermediate speeds, up to 50% of rated power available at half the rated speeds.
- Highest reliability and lifetime: MTBF of 100,000 hours and more can be considered standard.
Frameless alternator mechanical integration:
ENERGY-XS alternators allow the design of wind turbines driven directly by the rotor shaft, without the need of a speed multiplier. The alternator stator comes prealigned and mounted on a bearing, and has provision to allow for stop-nuts to lock unto the mast. A special feature of the design is that it allows the stator to be replaced if required without removing the wind turbine from its mounting flange.
Range and models:
Six ranges of ENERGY-XS alternators are available and they are characterized by their rated power post fixed to the series code: XS-25, XS-500, XS-1000, XS-2000, XS-3500, XS-5000.