Tyco Electronics Belgium Ec Bvba

Jurgen Verstraete

Tom Ocket

Jan Van Cauwenberge

Henk Maes

Steven Van Nimmen

The present invention relates to a coil form () for mounting on a magnet core () for a rotating electrical machine or a resolver and to a corresponding magnet core. The present invention further relates to a magneto-electric angle sensor, in particular a reluctance resolver, the stator of which is constructed by the principles according to the invention. The coil form has a winding form () for applying a winding, the winding form () comprising a recess () for receiving a tooth () of the magnet core (), at least one holding rib () being integrally formed and in cooperation with a holding structure () of the magnet core () fixing the coil form to the tooth. The magnet core comprises a plurality of lamellae () manufactured from sheet metal, which are layered on top of one another in a plane-parallel manner and interconnected, every two lamellae which lie on top of one another being rotated through an offset angle relative to one another to form the holding structure ().

Coil form for mounting on a magnet core, magnet core for reluctance resolvers, and method of manufacture

The present invention relates to a reluctance resolver () with an at least partially soft magnetic stator () and an at least partially soft magnetic rotor () which oppose each other by forming an air gap. The magnetic resistance in the air gap changes periodically on account of a configuration of the rotor that varies over the circumference. The angle sensor has a magnetic flux transmitter which is arranged on the stator and generates a predefined magnetic flux distribution in the air gap via at least one pair of poles. Furthermore, a magnetic flux receiver, which measures the intensity of the magnetic field via at least two pairs of signal poles arranged offset from one another at an angle, is arranged on the stator, wherein an angle value for a position of the rotor in relation to the stator can be derived from the two receiver signals. According to the invention, the stator () has distributed over the circumference a large number of teeth () which are separated from one another by grooves, and the magnetic flux transmitter comprises at least two primary windings which are arranged in such a way that at least one of the teeth carries no primary windings.

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Roeselare, Belgium

Jurgen Verstraete