Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2006-04-11
2006-04-11
Duda, Rina (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S434000, C318S132000, C318S604000, C318S606000
Reexamination Certificate
active
07026773
ABSTRACT:
System, method and apparatus for commutating a multiphase motor utilizing a single sensor. Commutation is carried out by employing a sensible system which incorporates phase commutating transition attributes. A motor is started by assigning a starting phase for a given direction of motor direction. An aligning phase initially is energized to orient the rotor so as to provide adequate starting phase start-up torque. Following such alignment and start-up, the motor is operated in response to transitions of the sensible system. In one aspect, a reference phase attribute may be incorporated in the sensible system to provide a mandated reference phase energization when the rotor is oriented for reference phase activation. Further described is a sensible system magnetic region configuration which is combined with a single package Hall effect sensor to provide three-phase unipolar and four-phase commutation with absolute phase defining information.
REFERENCES:
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patent: 5231338 (1993-07-01), Bulgarelli et al.
patent: 5821708 (1998-10-01), Williams et al.
patent: 5963706 (1999-10-01), Baik
patent: 6081091 (2000-06-01), Mitchell et al.
patent: 6703805 (2004-03-01), Griffitts
Duda Rina
Mueller and Smith LPA
Petersen Technology Corporation
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