Multiphase motors with single point sensing based commutation

Details Multiphase motors with single point sensing based commutation Multiphase motors with single point sensing based commutation

2005-05-10

2005-05-10

Duda, Rina (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S434000, C318S132000

Reexamination Certificate

active

06891343

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.

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