Reluctance synchronous electric machine having intrinsic phase c

Details Reluctance synchronous electric machine having intrinsic phase c Reluctance synchronous electric machine having intrinsic phase c

1989-03-30

1990-05-08

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, 310162, H02K 122, H02K 2112, H02K 2100

Patent

active

049241303

ABSTRACT:
A reluctance synchronous electric machine whose rotor is of the kind with a magnetically axial segmentation and includes magnetically axial layers of a ferromagnetic material alternated with intercalary layers of a non-ferromagnetic material. Some permanent magnets are inserted within the intercalary layers and they are oriented in such a way that they produce a magnetic flux oriented along the quadrature axis of the rotor in the sense opposite the magnetic flux produced along the same quadrature axis by the feed current flowing through the stator windings. Preferably the permanent magnets are proportioned in order to compensate at least by approximation the magnetic flux along the quadrature axis when the current flowing through the stator windings is the nominal current of the machine. The ferromagnetic sheets forming the ferromagnetic layers may be disposed so as to extend materially in axial direction, or to extend materially in transverse direction, being provided in this case with flux guides which define magnetically axial ferromagnetic layers. Bridges magnetically saturated by the permanent magnets may be provided for in the rotor structure.

REFERENCES:
patent: 3671789 (1972-06-01), Menzies
patent: 4139790 (1979-02-01), Steen

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