Permanent magnet - synchronous machine suitable for the delivery of a constant power in a large speed range

摘要

The rotor (1) comprises at its periphery of the permanent magnets (2). The stator is a polyphase armature, and the machine comprises means for varying the voltage and the current intensity as well as the angular offset of the magnet flux with respect to the flow of the stator. The rotor comprises, in addition, a predetermined number of pole pieces (3) and between two pole pieces (3) adjacent to at least one permanent magnet (2) of predetermined thickness and a magnetized radially or axially, each substantially radial wall adjacent to the substantially radial wall corresponding to a pole piece (3) being separated from the substantially radial wall of a predetermined distance (10).