| Bergey XL1With a rotor diameter of 2.5 meters (8.2 ft) and a peak output of 1,200 watts the XL.1 is intended for the off-grid home market in the U.S. and for rural electrification programs in developing countries. It is also a perfect upgrade system for current owners of micro-turbines. The XL.1 combines a number of advanced technical features, including a completely new airfoil (patent pending), to provide the highest efficiency yet achieved in a small wind turbine at a cost of energy ~ 40% lower than the current price leader. And, the XL.1 will carry the exclusive, industry-leading, Bergey 5-year warranty. | |||||
| Bergey XL1.5
Bornay
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 "We are very excited about the XL.1. We think customers are really going to like this machine" notes Mike Bergey, BWC's president and CEO. The XL.1 is an up-wind, horizontal-axis, three- bladed turbine. The blades are pultruded fibreglass, a material that is over ten times stronger than the injection- moulded plastic used on most small wind turbines. In fact, pultrusions have a breaking strength exceeding 100,000 psi, which is twice as strong as normal steel. "Just about any blade material will hold up in light to moderate winds. But, when the storms come, weak blades can put the whole system at risk." And the new BWC SH3045 airfoil makes the XL.1's blade probably the most efficient ever on a small wind turbine. The photo to the right shows the prototype Bergey XL.1 at the BWC factory undergoing tests on a 9 meter (30 ft) Tilt-up Tower. The blades attach directly to a specially designed very-low-speed permanent magnet alternator, which uses state-of-the-art neodymium super- magnets. "We have designed an oversized alternator that slows the rotor down and makes the turbine very quiet." Overspeed protection is provided by the proven BWC AutoFurl passive sideways furling system. "In spite of the claims otherwise, no other overspeed protection system has proven to be more reliable or effective than AutoFurl." The XL.1 includes the BWC PowerCenter controller which controls battery charging, provides a common interconnection point for all the DC (direct current) components, and even includes a 30 A controller for the solar modules that are often a part of a complete hybrid system. The batteries are charged with the exclusive BWC OptiCharge system, which maintains the charged batteries at a constant voltage. Sandia National Laboratory tests have shown that this charging methods extends the life of batteries. The PowerCenter allows an auxiliary or "dump" load to be connected to utilise excess wind (and/or solar) power after the batteries are fully charged. Low wind speed performance is greatly enhanced by a low-end-boost circuit that optimally loads the wind turbine down to wind speeds as low as 5.6 mph (2.5 m/s). Combined with the new blade system, this circuitry allows the XL.1 to produce useful power more than 6,000 hours a year at a typical site. For reference, a typical solar system produces power 3,500 hours a year at a typical site. The XL.1 PowerCenter will also be available with an optional on-board 500 W sine wave inverter system. In this configuration the XL.1 system will provide a complete "plug and play" AC power system for remote sites. This option should be available in September. The XL.1 will be offered with a tubular Tilt-up tower in heights from 9 m (30 ft) to 32 m (104 ft). These kits will be easy to install and will offer customers a complete "ready to install" kit. "There's been a need for more complete integration between turbine and tower packages for small wind turbines and we think our new line will fill that gap." |
XL.1
Specifications Type:
3 Blade Upwind Start-up
Wind Speed:
3 m/s (6.7 mph) Blade
Pitch Control:
None, Fixed Pitch C
(-40 to +140 Deg. F) Price
UK £1695.00 Includes the
Opticharge power centre that can take additional solar input for all year round power.
Tilt up tower kits available
9m
(30ft) £590.00 13m
(42ft) £790.00 With this turbine Tower kits include galvanised 2 m (6 ft), 89 mm (3.5 in) diameter tubular tower sections and associated hardware, guy anchors, guy wires and associated hardware, and gin-pole. UPS shippable. Tower electrical wiring is not included. *19m
(64ft) £1090.00 *25m
(84ft) £1290.00 *32m
(105ft) £1590.00 *114 mm (4.5 in) diameter tubular tower sections
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