Electricity: motive power systems – Power factor control of armature or line circuit
Reexamination Certificate
2005-08-17
2009-02-24
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Power factor control of armature or line circuit
C318S717000, C318S700000, C318S716000
Reexamination Certificate
active
07495404
ABSTRACT:
A system and method of controlling the power factor for providing either unity, leading or lagging results for the sensorless control of synchronous machines. The system and method provides an estimated angle of the phase current Park vector and uses a floating synchronous reference frame that is shifted from the estimated angle of the phase current Park vector by an angle β to allow the active control and change of the power factor during operation for applications such as producing reluctance torque of a salient pole synchronous machine during Main Engine Start (MES), and field weakening for Environmental Control Systems (ECS) and MES applications.
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European search report dated Feb. 2, 2008.
Huggett Colin E.
Sarlioglu Bulent
Caglar Esq. Oral
Honeywell International , Inc.
Luo David S
Ro Bentsu
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