Wind power plant having magnetic field adjustment according to rotation speed
AssigneeVestas Wind Systems A/S
InventorLorenz Feddersen
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Abstract
A wind power plant where the driving shaft communicates with a synchronous generator (3) optionally through a gear (2) and with a transformer, if any, communicating through an AC/DC inverter 7 with an HVDC transmission cable 9. The synchronous generator (3) is connected to a magnetic field controller (3). In response to an output parameter, such as the power generated by the synchronous generator (3), this magnetic field controller (4) is adapted to vary the magnetic field in the generator (3) in response to said output parameter. As a result it is possible to compensate for a possible variation in the output parameter, whereby said output parameter is stabilized. As a result it is possible to compensate for a varying speed of rotation.
Claims10
A wind power plant where a driving shaft communicates with a synchronous generator (3) and with a transformer with a number of output windings, said transformer communicating through an AC/DC rectifier with an HVDC transmission cable (9), measures being taken so as to secure against possible variations in the speed of rotation, characterised by a magnetic field controller (4) connected to the generator (3), said magnetic field controller (4) being adapted to vary the magnetic field in the synchronous generator (3) in response to a speed of rotation-depending output parameter of said generator (3) in such a manner that possible variations in the speed of rotation are compensated for, wherein the AC/DC rectifier is composed of diodes.
Dependencies are inferred from the claim text.