Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-09-17
1999-09-28
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 40MM, 310254, H02K 3700
Patent
active
059593784
ABSTRACT:
An electromagnetic, two phased pulse motor rotatable in either of two rotary directions has a radially-magnetized rotor with a rotor axis and four magnetic poles of alternating polarities distributed evenly about the rotor axis whereby adjoining magnetic axes are oppositely polarized, and has two magnetic coils coupled magnetically to the rotor via two stator plates, each of which has two stator poles that are arranged relative to each other symmetrically reversed to a center line. Two of the stator poles directly adjoin each other and are offset from each other by an angle of 45.degree., and another two of the stator poles are offset from each other by an angle of 135.degree.. Each of the first two stator poles has a pole surface disposed at a substantially constant distance from a surface of the rotor. Each of the second two stator poles has first and second pole surfaces disposed respectively at different distances from the rotor surface. The pulse motor still further includes an energizing source coupled to and applying selected current pulses of the same and/or opposite polarity to each of the first and second magnetic coils, whereby a magnetic field is generated to rotate about the rotor axis, the rotor is incrementally rotated about the rotor axis in steps of 45.degree. and current pulses are applied to only one of the first and second magnetic coils to rotate the rotor about the rotor axis in steps of 22.5.degree..
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International Published Application WO 85/00704 of Michel Grosjean, published Feb. 14, 1985 entitled "Multiphase Motor With Magnetized Rotor Having N Pairs of Poles With Axial Magnetization".
Patent Abstracts of Japan, vol. 004 No. 175 (E-36) entitled "Pulse Motor".
Gable R. Lewis
Haller Echkhart W.
Nguyen Tran N
Ramirez Nestor
Stoll-Haller Doris
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