Capacitance for gearless windturbines
A new generation of gearless full-converter wind turbines is entering the market. They need capacitors that can deliver high levels of capacitance, reliability and ruggedness. EPCOS screw terminal aluminum electrolytic capacitors provide an outstanding solution.
Reliability and ruggedness of all components are especially important for the fast-growing number of off shore installations. Also, with the increasing size of the rotor, especially in offshore installations, doubling the power (Figure1) increases the torque on the gearbox 8-fold, escalating the cost of the gearbox itself and its associated maintenance costs. In response, wind turbine manufacturers have introduced gearless wind power plants. The generators are synchronous with voltages of 690 V AC (approx. 1200 V after 6- or 12-bridge rectifying). As a result, the entire power has to be handled by the converter, requiring very high capacitance levels per MW of power in the DC link in order to achieve the desired stabilization.
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B43455 、 B43457 、 B43456 、 B43458 、 B43564 、 B43584 、 B43740 、 B43760 、 B43700 、 B43720 |
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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November 2012 |
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555 KB |
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