Electricity: motive power systems – Synchronous motor systems – Hysteresis or reluctance motor systems
Patent
1997-03-25
1998-11-24
Ip, Paul
Electricity: motive power systems
Synchronous motor systems
Hysteresis or reluctance motor systems
318696, 318715, 318721, H02F 800
Patent
active
058412620
ABSTRACT:
A universal drive for a switched reluctance machine the drive obtaining a desired speed, the drive comprising means for automatically forming a magnetization table, said table containing information relating the magnetic flux, current, and rotor angle of said switched reluctance machine; means for automatically forming a rule table, the rule table containing information relating the torque of the SRM to turn-on and turn-off angles; sensors for sensing the dc bus voltage and currents of the phases of the machine; means for estimating a reference angle using information in the magnetization table and the sensed dc bus voltage and phase currents; means for obtaining the turn-on and turn-off angles from the self-tuned table based upon the desired speed; and means for turning the phase currents of the machine on at the turn-on angle in relation to the reference angle and turning the phase current off at the turn-off angle in relation to the reference angle.
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Emerson Electric Co.
Ip Paul
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