Low magnetic leakage flux brushless pulse controlled d-c motor

Details Low magnetic leakage flux brushless pulse controlled d-c motor Low magnetic leakage flux brushless pulse controlled d-c motor

1984-01-03

1985-10-15

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 310 68R, H02K 2902

Patent

active

045477140

ABSTRACT:
To reduce a unidirectional leakage flux emanating from a two-filament, pulse-energized motor, the stator (21, 22) is constructed at least as a four-pole stator and each filament (40, 41) of the windings (45; 74, 75, 78, 79) associated with respective stator poles is wound on the stator core elements (21) such that the number of North poles and South poles arising at the circumference of the core elements, upon energization by a current source (48, 49) of the respective filaments, will be identical, and the sum of the magnetic flux due to the energization of the respective filament arising, for example, at the center or shaft of the motor, will be essential zero, so that the effect of unidirectional, pulsating leakage flux upon a galvano-magnetic sensor (16) or other magnetic apparatus, e.g. magnetic tape transducing devices, will be essentially eliminated.

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