Method and apparatus for reducing iron losses in a switched relu

Details Method and apparatus for reducing iron losses in a switched relu Method and apparatus for reducing iron losses in a switched relu

1996-12-04

1998-06-02

Ro, Bentsu

Electricity: motive power systems

Synchronous motor systems

Hysteresis or reluctance motor systems

318254, H02P 705

Patent

active

057605653

ABSTRACT:
A method of controlling a switched reluctance machine having a rotor and a stator with at least one phase winding to reduce iron loss whereby the phase winding is energized over a first angular period of the rotation of the rotor and then current in the phase winding is allowed to freewheel through the phase winding for a second angular period of rotor rotation where, in a first method, the second angular period is greater than the first angular period. Also a method of using freewheeling in high speed applications to reduce iron loss.

REFERENCES:
patent: 4500824 (1985-02-01), Miller
patent: 4611157 (1986-09-01), Miller et al.
patent: 5015903 (1991-05-01), Hancock et al.
patent: 5138244 (1992-08-01), Bahn
patent: 5260635 (1993-11-01), Bahn
patent: 5619113 (1997-04-01), Bahn

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