Sensorless switched reluctance electric machine with...

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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C310S254100, C310S06800R, C318S254100, C318S434000, C318S701000, C318S720000

Reexamination Certificate

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06897591

ABSTRACT:
A sensorless switched reluctance machine includes a stator with a plurality of circumferentially-spaced stator segment assemblies that include salient stator poles and inter-polar stator slots. Each of the stator segment assemblies includes a stack of stator plates forming a stator segment core, an end cap assembly, and winding wire wound around the stator segment core and the end cap assembly. The rotor defines a plurality of rotor poles. The rotor tends to rotate relative to the stator to a rotational position that maximizes the inductance of an energized winding. A sensorless drive circuit derives rotor position and energizes the winding wire around the stator segment assemblies based on the derived rotor position. Each stator plate includes a first radially outer rim section and a tooth section that extends radially inwardly from a first center portion of the first radially outer rim section.

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