초록 ▼

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 controll

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.

대표청구항 ▼

The invention claimed is: 1. 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 s

The invention claimed is: 1. 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. 2. A wind power plant as claimed in claim 1, characterised in that the magnetic field controller (4) is adapted to detect the currents (IG1, IG2) generated by the synchronous generator (3), a negative feedback being established for regulating the current through the rotor winding (3a). 3. A wind power plant as claimed in claim 1, characterised in that the magnetic field controller (4) is adapted to detect the voltages (IG1, IG2) generated by the synchronous generator (3), a negative feedback being established for regulating the current through the rotor winding (3a). 4. A wind power plant as claimed in claim 1, characterised in that the magnetic field controller (4) is adapted to detect the power generated by the generator (3), a negative feedback being established for regulating the current through the rotor winding (3 a) in response to the detected power. 5. A wind power plant as claimed in claim 4, characterised in that the negative feedback for regulating the current through the rotor windings (3a) includes a P, I or D regulation or a combination thereof. 6. A wind power plant as claimed in claim 1, characterised in that the rotor windings are dimensioned with a relatively low inductance. 7. A wind power plant as claimed in claim 1, characterised in that the rotor is adapted to rotate at a speed of rotation high enough to further reduce the inductance. 8. A wind power plant as claimed in claim 1, characterised in that the synchronous generator (3) is multipolar. 9. A wind power plant as claimed in claim 1, where the wind turbine comprises a transformer with a number of output windings coupled in series with n an equal number of rectifiers so as to obtain an HVDC. 10. A wind power plant as claimed in claim 1 wherein the driving shaft communicates with the synchronous generator (3) through a gear (2).