Permanent magnet rotor dynamoelectric machine - has rotor-coaxial stator coil with axial flux paths in rotor and stator

摘要

In the stator (13), coaxial to the rotor axis, at least one control coil (14) of circular form affects the magnetic flux of the opposite poles (N,S). For the differential flux passing through this control coil (14) flux paths are axially directed not only in the stator (13) but also in the rotor (11). At at least one ferromagnetic bearing housing (18) there is an external hook (17) at a small gap (16) from the rotor shaft, the control coil (22) being formed on the outer circumference of hook. Pref., there are hooks on each housing with corresp. control coils. ADVANTAGE - Useful flux altered simply to enable control or regulation for different loads or speeds.