Variable speed wind turbine having an exciter machine and a...

Details Variable speed wind turbine having an exciter machine and a... Variable speed wind turbine having an exciter machine and a...

H - Electricity

02

P

H02P 9/00 (2006.01)

Patent

CA 2646114

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. Thus, the power converter is not directly connected to the grid avoiding the introduction of undesired harmonic distortion and achieving a better power quality fed into the utility grid. Moreover, the variable speed wind turbine includes a power control and a pitch regulation.

Une éolienne à vitesse variable possédant un générateur d'induction à double alimentation (DFIG) comprend une machine d'excitation couplée mécaniquement au DFIG et un convertisseur de secteur placé entre un rotor du DFIG et la machine d'excitation. Ainsi, le convertisseur de secteur n'est pas directement connecté à la grille, ce qui permet d'éviter l'introduction de distorsion harmonique non désirée et d'obtenir une meilleure qualité d'énergie alimentant le réseau électrique. De plus, l'éolienne à vitesse variable comprend un système de commande de puissance et un système de régulation à pas variable.

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