High-efficiency electric motor with low torque variation

摘要

A polyphase electric motor including a body mobile relative to a fixed body, one of these bodies carrying an exciter strip formed by a plurality of alternating coil windings aligned with each other and connected to an energizer device including a switch adapted to excite the pluralities of coils alternately, the other body comprising a row of alternating magnets and, one on each side of this row, two magnetic bars determining along the row an airgap of constant width in which the exciter strip is disposed. The permanently magnetized row is disposed parallel to the magnetization directions of the magnets constituting it between two continuous magnetic plates.