Dynamic electric brake for a variable speed wind turbine...

F - Mech Eng,Light,Heat,Weapons – 03 – D

Patent

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F03D 9/00 (2006.01) F03D 7/00 (2006.01) H02P 3/18 (2006.01) H02P 9/10 (2006.01)

Patent

CA 2646119

A variable speed wind turbine having a doubly fed induction generator (DFIG), includes an exciter machine mechanically coupled to the DFIG and a power converter placed between a rotor 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.

L'invention concerne une éolienne à vitesse variable possédant un générateur asynchrone à alimentation double (DFIG), qui comprend une excitatrice mécaniquement couplée au DFIG et un convertisseur de puissance placé entre un rotor du DFIG et l'excitatrice. Ainsi, le convertisseur de puissance n'est pas directement connecté au réseau électrique ce qui évite l'introduction d'une distortion harmonique non souhaitée et produit une alimentation de meilleure qualité dans le réseau électrique général. En outre, cette éolienne à vitesse variable comprend une commande de puissance et un réglage de pas.

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