Pitch Wind AB has started manufacture of its innovative 20 kW wind turbine. The two-bladed variable speed design with 14 metre rotor diameter has a direct driven generator with permanent magnets, passive pitch control and a 30 metre concrete tower. It is designed by wind veteran Sven Svenning who also developed the larger turbines manufactured by Zephyr. The turbine has an advanced power converter, but the yaw is mechanical, a so-called Dutchman with two small propellers perpendicular to the turbine. According Pitch Wind it will produce as much as 75,000 kWh a year in a good location. The generator, with a weight of 610 kg, has been tested at the Chalmers technical university in Gothenburg. The first two units will be installed this month in Sweden, one in Kalmar and the other in Mark, where they are manufactured. The company expects to get a first series of ten turbines on line this year. Magnus Johansson, part owner of Pitch Wind, believes there is a huge market for the turbine among farmers seeking energy self sufficiency. The sales price will be SEK 355,000 -- allowing wind power generation at a unit cost comparable with the output from a 600 kW wind turbine, according to Johansson.
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