A low voltage ride through system for a variable speed wind...

Details A low voltage ride through system for a variable speed wind... A low voltage ride through system for a variable speed wind...

H - Electricity

02

P

H02P 9/00 (2006.01)

Patent

CA 2676120

A variable speed wind turbine having a doubly fed induction generator (DFIG) includes an exciter machine (212) mechanically coupled to the DFIG and a power converter (230) placed between a rotor (211) of the DFIG and the exciter machine which guarantees a stable voltage to the power converter. Thus, the power converter is not directly connected to the grid allowing the continuous operation of the system during a low voltage event in the grid.

La présente invention concerne une éolienne à vitesse variable à générateur à double résonnance. Elle comporte une excitatrice mécaniquement couplé au générateur à double résonnance et un convertisseur de puissance monté entre un rotor du générateur à double résonnance et l'excitatrice qui garantit une tension stable au convertisseur de puissance. Ainsi, le convertisseur de puissance n'est pas directement raccordé au réseau, ce qui permet une exploitation continue du système pendant un événement basse tension dans le réseau.

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