Brushless, permanent magnet d-c pulse current controlled, essent

Details Brushless, permanent magnet d-c pulse current controlled, essent Brushless, permanent magnet d-c pulse current controlled, essent

1978-06-27

1980-07-08

Truhe, J. V.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 310268, H02K 2902

Patent

active

042119634

ABSTRACT:
A permanent magnet motor designed for d-c operation with pulsed current supply through at least two, and preferably four or more stator coils, has a rotor magnetized such that, with respect to 180.degree.-electrical, about 120.degree. are magnetized in one magnetic polarity, and the remaining about 60.degree. are magnetized with dual polarity to provide a monopole zone of magnetization and a dipole zone of magnetization, a galvano-magnetic sensing element being exposed to the path of circumferential rotation in which the same polarities of the dipole and monopole zones are contiguous for control of pulse current flow through the windings of the motor. A tacho generator winding may additionally be included in the air gap, exposed only to the rotary path of one magnetic pole of the dipole zone and the monopole zone.

REFERENCES:
patent: 3299335 (1967-01-01), Wessels
patent: 3354329 (1967-11-01), Reich

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