Switched reluctance machine capable of improved fault operation

Details Switched reluctance machine capable of improved fault operation Switched reluctance machine capable of improved fault operation

1996-07-11

1998-04-07

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

310168, H02H 504

Patent

active

057371644

ABSTRACT:
A switched reluctance machine capable of improved operation under fault conditions. The machine includes a controller which responds to a fault in a phase winding by cutting off current to the phase windings of all stator poles that are aligned with a rotor pole at the time the stator pole having the phase winding with the fault therein aligned with a rotor pole. Consequently, there is no magnetic flux in the stator or rotor at such time. Therefore, no current is induced in the faulted phase winding. This avoids generation of a counter torque, as well as avoiding potential catastrophic failure of the SR machine.

REFERENCES:
patent: 4625158 (1986-11-01), Taenzer
patent: 4707650 (1987-11-01), Bose
patent: 4896088 (1990-01-01), Jahns
patent: 4896089 (1990-01-01), Kliman et al.
patent: 5111095 (1992-05-01), Hendershot

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