Rotary electric apparatus and generator/motor using said...

H - Electricity – 02 – K

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Details

H02K 16/02 (2006.01) H02K 21/20 (2006.01) H02K 21/24 (2006.01) H02K 3/28 (2006.01)

Patent

CA 2250048

A rotary electric apparatus; and a generator and a motor respectively using the rotary electric apparatus. Said rotary electric apparatus comprises a rotary shaft (1), a stator (2) being disposed by way of surrounding external periphery of the shaft (1), and a pair of rotors (3N) and (3S) integrally disposed onto the shaft at both-side positions of the stator (2). The rotor (3N) comprises a plurality of N-polar magnetic poles and the other rotor (3S) comprises S-polar magnetic poles by the same number as that of the rotor (3N). The N and S magnetic poles set to the rotors are disposed at equal angles in the state of being opposed to each other in the axial direction of the shaft (1). The stator (2) comprises cores that correspond to double number of magnetic poles of each rotor, magnetic-pole portions formed at both ends of said cores, and coils wound on said cores. The magnetic-pole portions both ends are respectively disposed at equal angles in the state of being opposed to the magnetic poles of the rotors via air-gap. By virtue of the above structure, magnetic poles provided for the rotors (3N)(3S) can be formed with flat surfaces, thus securing even magnetic flux. Further, as a result of contraction of the stator (2) in the axial direction, iron loss and leakage flux can securely be minimized.

Machine dynamoélectrique dans laquelle un stator (2) entoure un périmètre d'arbre rotatif (1) et où l'on a monté une paire de rotors (3N, 3S) solidaires des parties de l'arbre (1) situées des deux côtés du stator (2), ainsi que générateur et moteur utilisant ladite machine. Le rotor (3N) a des pôles magnétiques à polarité N, et le rotor (3S) a le même nombre de pôles ayant une polarité S, les pôles de ces rotors respectifs étant disposés à intervalles équiangulaires de sorte qu'ils soient opposés dans la direction axiale de l'arbre (1). Le stator (2) a deux fois plus de noyaux qu'il y a de pôles magnétiques sur un rotor, des pôles magnétiques formés aux deux extrémités des noyaux, et des bobines enroulées autour des noyaux, les pôles magnétiques aux deux extrémités des noyaux étant disposés à intervalles équiangulaires de façon qu'ils soient opposés aux pôles magnétiques des rotors par des espaces d'air. Avec cette configuration, on peut former les pôles magnétiques des rotors (3N, 3S) selon des surfaces plates de manière à établir un flux magnétique uniforme et, par ailleurs, on peut réduire la longueur axiale du stator (2), d'où la diminution des pertes dans le fer et de fuite du flux magnétique.

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