Method and apparatus for controlling a switched reluctance machi

Details Method and apparatus for controlling a switched reluctance machi Method and apparatus for controlling a switched reluctance machi

1996-04-12

2000-04-18

Martin, David

Electricity: motive power systems

Switched reluctance motor commutation control

318701, H02K 2300

Patent

active

060519428

ABSTRACT:
A method for controlling the average voltage applied to a phase winding of a reluctance machine during periods of current increase, stable current control, and current decrease to improve machine efficiency and thereby reduce acoustical noise produced by the machine and unwanted vibration. According to one aspect, a method is provided whereby a maximum duty cycle is selected and voltage is applied to the phase winding during the period of current increase according to the maximum duty cycle until the current reaches a desired peak current value and thereafter the voltage applied to the phase winding is equal to the lesser of the voltage required to keep the phase current at the predetermined peak current value or the voltage corresponding to the maximum duty cycle.

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