Rotor for an electrical machine, specially a transversal...

H - Electricity – 02 – K

Patent

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Details

H02K 1/27 (2006.01)

Patent

CA 2286782

The invention concerns a rotor for an electric machine, especially a transversal flow machine, with at least one support disk and at least one annular pole structure extending in the axial direction and arranged on one face of the support disk coaxial to the rotor axis. The pole structure comprises two adjacent rows of alternately magnetized magnet arrangements in the peripheral direction, with collector and soft iron elements lying in between, separated by an intermediate layer of magnetically and electrically nonconducting material (intermediate ring). An end ring is allocated to each pole structure. A number of magnet arrangements have an inner and outer magnet. The collector and soft iron elements adjacent to a magnet arrangement in the peripheral direction are configured so that they form a first inner stop and a second outer stop for the magnet arrangement in the radial direction. The invention is characterized by the fact that an intermediate element is allocated to a number of magnet arrangements. The intermediate element is arranged between the inner and outer magnets in the radial direction and extends beyond their axial length. The intermediate element, for this purpose, can be inserted into complementary grooves on the rings (end ring, intermediate ring and central support disk) adjacent to the separate rows of alternately magnetized magnet arrangements in the peripheral direction, with collector and soft iron elements lying in-between.

L'invention concerne un rotor destiné à une machine électrique tournante, notamment une machine à flux transversal, comportant au moins une structure polaire. Cette dernière comprend deux rangées juxtaposées, séparées par une couche intermédiaire en matériau magnétiquement et électriquement non conducteur (anneau intermédiaire), d'agencements magnétiques magnétisés en alternance dans le sens périphérique, des éléments collecteurs et des éléments en fer doux étant situés entre ces agencements magnétiques. Ces derniers sont reliés par liaison de forme avec les éléments collecteurs et les éléments en fer doux adjacents dans le sens périphérique, les éléments collecteurs et les éléments en fer doux étant munis au moins partiellement d'une couche isolante. L'invention est caractérisée en ce qu'au moins l'un des éléments collecteurs ou des éléments en fer doux adjacents dans le sens périphérique à un agencement magnétique est dépourvu d'une surface de butée radiale extérieure pour permettre au moins le soutien passif de l'agencement magnétique en sens radial.

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