Electric generator for wind and water turbines

Details Electric generator for wind and water turbines Electric generator for wind and water turbines

H - Electricity

02

K

H02K 7/116 (2006.01) F03D 9/00 (2006.01) H02K 15/16 (2006.01) H02K 7/18 (2006.01)

Patent

CA 2608452

A generator housed in a wind turbine nacelle. The generator rotor (6) is mounted to gearbox output pinions (21), thereby eliminating the need for couplings. The generator frame (3) is located directly on the gearbox (27) and is located to control the air gap (31). To facilitate removal of the generator, tapers (33, 34) are used that have steep angles that exceed the friction coefficient of the materials used. To provide adequate support over its length, the shaft (22) employs dual tapers (33, 34), each short and precisely located conical surface of which provides exact location on the near and far sides of the shaft (22). The length of straight shaft (22) between the dual locating tapers (33, 34) serves to support the generator during mounting and de-mounting. During installation, the tapers (33, 34) center the rotor (6) and bul¬ let pins (35) center the frame (3) (stator (4) ). When the system aligns the rotor (6) and stator (4), retainer elements (2, 16) act as labyrinth seals designed to protect the generator interior from contamination.

Générateur logé dans un nacelle d'éolienne. Le rotor (6) de générateur est monté sur les pignons (21) de sortie de boîte de vitesse, éliminant ainsi le besoin de coupleurs. Le cadre (3) de générateur est situé directement sur la boîte de vitesse (27) et est disposé pour réguler l'espace d'air (31). Afin de faciliter le démontage du générateur, des cônes (33, 34) sont utilisés qui présentent des angles obtus, qui excèdent le coefficient de frottement des matériaux utilisés. Pour fournir un support adéquat sur sa longueur, l'arbre (22) emploie des cônes (33, 34) doubles, dont chaque surface conique, courte et précisemment localisée, fournit une localisation exacte des extrémités proche et lointaine de l'arbre (22). La longueur d'arbre (22) droit entre les cônes (33, 34) de localisation doubles sert à supporter le générateur durant le montage et le démontage. Pendant l'installation, les cônes (33, 34) centrent le rotor (6) et des goupilles (35) arrondies centrent le cadre (3) (stator (4)). Lorsque le système aligne le rotor (6) et le stator (4), des éléments de retenue (2, 16) agissent comme des chicanes d'étanchéité conçues pour protéger l'intérieur du générateur de la contamination.

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