Torque driven dual PMG actuator

Details Torque driven dual PMG actuator Torque driven dual PMG actuator

1991-04-30

1993-11-09

Peckman, Kristine L.

Electricity: single generator systems

Generator control

Magnetic structure

322 28, 310 93, 310114, H02K 1600

Patent

active

052606422

ABSTRACT:
A permanent magnet generator having a plurality of permanent magnet generator units which produce a controlled output potential for driving variable electrical load (20) by vectorially adding an output potential of the permanent magnet generator units to produce the controlled output potential in accordance with the invention which includes a plurality of permanent magnet rotors (12 and 14) mounted on a drive shaft (16) with at least one of the rotors being rotatable with respect to the drive shaft to vary an angular position of the at least one of the rotors relative to the shaft to produce a variable magnitude permanent magnetic field; at least one stator (24) magnetically coupled to the variable permanent magnetic field for producing the controlled output potential; and a torsion spring (30), coupled to the drive shaft and to the at least one rotor, for angularly positioning the rotors relative to each other so that the variable permanent magnetic field coupled to the at least one stator is zero in response to a stator fault.

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patent: 4885493 (1989-12-01), Gokhale
patent: 4937483 (1990-06-01), Matsui et al.

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