ROTARY ELECTRIC MOTOR HAVING AT LEAST THREE AXIALLY ALIGNED STATOR POLES AND/OR ROTOR POLES

摘要

A rotary electric motor has a stator (30) with a plurality of separate and ferromagnetically isolated electromagnet core segments (32) disposed coaxially about an axis of rotation. The core segments (32) are supported by a non-ferromagnetic structure.(50) Each core segment (32) has at least three poles aligned in a direction parallel to the axis. Windings are formed on portions linking the poles so that, when energized, the center pole forms a magnetic polarity opposite to the magnetic polarity of the other poles. The rotor (20) comprises a plurality of axial rows of permanent magnets disposed circumferentially along the air gap. Each axial row of rotor magnets comprises a center permanent magnet (22) of one magnetic polarity and, at each axial side thereof, a permanent magnet (23, 24) of a magnetic polarity opposite to the polarity of the center magnet.