Aktiebolaget Electrolux

Ulf P Berg

Lars G Moren

Bengt G Hedlund

A two-pole reluctance motor comprises a stator having two diametrically opposed poles with windings, and a rotor of soft magnetic material having two correspondingly positioned poles, each rotor pole having a first portion with a peripheral extension which coincides with the corresponding extension of the respective stator pole, and an additional portion adjacent the first portion and having a pole surface situated closer to the shaft of the rotor than the first portion. A device is arranged during the starting process of the motor to drive the motor by current pulses of a magnitude which in areas of pole overlap saturates at least those portions of the stator and the rotor pole, respectively, closest to the pole surfaces.

Device for controlling a reluctance motor

A reluctance motor comprises a rotor (22) of soft magnetic material with two diametrically opposed poles (23,24) of equal size. The motor further includes a stator which in a corresponding way is provided with two poles (12,13). The stator poles (12,13) have windings (14,15) which can be activated separately. Further the stator poles are so designed that the radial line of symmetry (26) of one stator pole (13) forms an angle to the radial line of symmetry (25) of the other stator pole (12). Means are provided which on start drive the two windings alternately and in continuous operation drive them simultaneously.

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Hagersten, Sweden

Ulf P Berg