Method and device for regulating a wind machine

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

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F03D 9/00 (2006.01) H02P 9/30 (2006.01) H02P 9/48 (2006.01)

Patent

CA 2441963

The invention concerns an installation for producing electric power comprising an electrical alternator (7) having a rotor preferably with permanent magnets integral with the rotating part (5, 6) of the wind machine, to constitute a rotary assembly (5, 6, 8) and a power electronics (12) module including means for converting (15) the alternating current produced by the alternator (7) into direct current. The method consists in adjusting the electrical characteristics of the electric current produced by the alternator (7) and the rotational speed of the rotary assembly (5, 6, 8) by modulating the direct current produced by the power electronics (12) module converting means (15). Preferably, the power electronics (12) comprises a pulse-width modulating rectifier (15), a rheostatic chopper (16) and a pulse-width modulating inverter (17) interconnected by a direct current bus (18). The inventive method and device enable to enhance the control of the wind machine in accordance with atmospheric conditions.

L'installation de production d'énergie électrique comporte un alternateur électrique (7) ayant un rotor de préférence à aimants permanents solidaire de la partie tournante (5, 6) de l'éolienne, pour constituer un ensemble rotatif (5, 6, 8) et une électronique de puissance (12) comportant un moyen de conversion (15) du courant alternatif produit par l'alternateur (7) en courant continu. On règle les caractéristiques électriques du courant électrique produit par l'alternateur (7) et la vitesse de rotation de l'ensemble rotatif (5, 6, 8), par modulation du courant continu produit par le moyen de conversion (15) de l'électronique de puissance (12). De préférence, l'électronique de puissance (12) comporte un redresseur à modulation de largeur d'impulsion (15), un hacheur rhéostatique (16) et un onduleur à modulation de largeur d'impulsion (17) reliés entre eux par un bus à courant continu (18). Le procédé et le dispositif suivant l'invention permettent d'améliorer la conduite de l'éolienne en fonction des conditions atmosphériques.

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