Method of determining the position and connection of multi-pole

Details Method of determining the position and connection of multi-pole Method of determining the position and connection of multi-pole

1976-04-29

1978-02-21

Gruber, Felix D.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

310210, 364488, H02K 300

Patent

active

040755436

ABSTRACT:
The invention relates to a novel method for determining the multipole windings of electric induction machines. This method is based on the operational modulation, which consists in modulating a 2p-pole basic winding by q sequences of complex operators (a.sup.o, a.sup.1, . . . a.sup.r, . . . a.sup.m-1) wherein said operators are the m m.sup.th roots of the unity in a m - phased system, so that the polarity of the modulated winding is .vertline.2p.+-.2q.vertline.. In a 3-phased system, the wiring diagram consists e.g. in 9 main branches of windings coupled into 3 main parallel coupled stars, and this diagram requires only 6 outputs and two 3-pole switches for switching from one speed to the other.

REFERENCES:
patent: 3686553 (1972-08-01), Broadway et al.
patent: 3794870 (1974-02-01), Broadway et al.
patent: 3898543 (1975-08-01), Broadway et al.
patent: 3927358 (1975-12-01), Broadway et al.
patent: 3935519 (1976-01-01), Pfarrer et al.

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