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| XZERES 442 rated at 10kw |
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XZERES Wind Turbines
Formally the ARE 442
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Engineered and built by the very well respected Robert Preus. Along with his colleagues, the XZERES wind generators are as powerful and strong as they come. Designed for harsh climates, they are built simply and ruggedly to quietly last. XZERES machines have a large swept area to capture more wind and produce more energy, especially in low wind speeds. These machines produce energy in the winds you get, day in and day out. Power when you need it. XZERES manufactures the 110 (2.5KW), the 442 (10KW), as well as a variety of tower types and sizes. You can't go wrong with this machine. A very conservative name plate value of 10KW when it actually produces generated power of most 15KW machines. We like this unit very much.
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XZERES 442 |
| Rotor Diameter |
7.2 meters (23.6 feet) |
| Swept Area |
41 mē (442 sq. ft.) |
| Configuration |
3-blade upwind with side furling |
| Rated Power |
10 kW |
| Cut-in Wind Speed |
2.5 m/s (6 mph) estimate |
| Rated Wind Speed |
11 m/s (25 mph) |
| Alternator |
Neodymium magnet, 3-phase |
| Voltage Options |
48V, Grid-connect |
| Tower-Top Weight |
1,350 lbs. |
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Grid-Connected Systems
The XZERES grid connection system consists of four main parts:
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The XZERES 442 wind turbine with a very large swept area, optimized for energy production in low wind sites. (See specs.)
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The SMA Sunny/Windy Boy inverter is UL listed for direct grid connection. Two (2) WB 6000U inverters for the XZERES 442. Maximum AC power output is 6,000 watts for the WB 6000U. Peak efficiency is 94.4%, and the "Total Harmonic Distortion" is less than 4% (the best in the industry). Its power factor is unity. Visit SMA-America for more information.
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The XZERES Voltage Clamp is designed to protect the inverter(s) from over-voltage damage, when the utility power grid goes down. The Voltage Clamp has a rectifier to convert the turbine's AC power to DC for the Windy Boy inverter. It has a brake switch to stop the machine for servicing. It also has a control which will shunt energy to a diversion load when the voltage exceeds a safe limit for the inverter. Over-voltage can occur if the utility grid is down and the Windy Boy inverter is not putting the available power into the grid.
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The diversion load (a.k.a dump load) is a resistor element which converts excess energy into heat, which can be used for space heating. It is only activated when the grid is not available, or when the generator is producing more power than the Windy Boy inverter can safely handle.
The configuration of this system is as follows: Energy generated from the wind turbine passes through the XZERES Voltage Clamp. The Voltage Clamp, in turn, feeds both the Windy Boy inverter(s) and the diversion load. The WB inverter then connects into the AC breaker box.
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