Fault clearing for permanent magnet machines

Details Fault clearing for permanent magnet machines Fault clearing for permanent magnet machines

2010-12-23

2011-10-11

Patel, Tulsidas C (Department: 2839)

Electricity: single generator systems

Generator control

Combined permanent magnet and wound field structure

C322S045000, C322S033000, C322S047000

Reexamination Certificate

active

08035357

ABSTRACT:
A permanent magnet machine (PMM) has a kinetic portion electrically coupled to a power conversion portion. Motive power is provided to the kinetic portion by a torque applied to a motive shaft coupled to a prime mover, such as an aircraft engine or an automobile engine. A sensor is effective to detect a fault condition in the kinetic portion. When a fault is detected, the sensor applies a voltage to a winding within the kinetic portion generating an opposing directional counter torque to the motive shaft. A combination of the torque and counter torque exceeds a fracture yield strength of the motive shaft. The fault condition is then rendered safe while the prime mover may continue normal operation.

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