BRUSHLESS PERMANENT MAGNET MOTOR OR ALTERNATOR WITH VARIABLE AXIAL ROTOR/STATOR ALIGNMENT TO INCREASE SPEED CAPABILITY

摘要

Brushless permanent magnet motor there is fixed radial air gap to operate with much higher speed less than maximum speed normal through reduction effective magnetic pole intensity. Increase axially displaced p-m rotor and speed that constant velocity bearing increases pari passu, reduces torque. P-m rotor axial dipole field is axially displaced between rotor magnetic pole and stator to provide, and reduces the effective magnetic pole intensity or magnetic flux for being supplied to stator. Integral constant velocity linear bearing is used for the motor drive shaft of movable rotor and fixed position. Thrust bearing drives magnet rotor to resist magnetic attraction towards stator. Allow motor drive shaft using constant velocity linear's bearing, radial support bearing, position coder, cooling fan, output end connection is maintained at constant position, while rotor-position deviates.