Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1981-03-03
1984-03-06
Truhe, J. V.
Electricity: motive power systems
Switched reluctance motor commutation control
318138, H02K 2900
Patent
active
044356730
ABSTRACT:
A direct current brushless motor is structured by fixing a ring-shape magnetic rotor to a rotor shaft in one piece by way of the magnet yoke, and by arranging the position of the insulating plate on which the magnetic induction elements for detecting the magnetic field of the rotor magnet, stator windings and the rotor yoke are installed, so as to have the rotor magnet oppose the stator windings across an air gap. The stator windings are composed of delta connection wirings and the windings of each phase are placed on a concentric circle having the rotor shaft at its center and in a position dividing the said circle in equiangular areas.
The magnetic induction elements are provided in three with the first, second and third elements being respectively fixed at the positions where their respective phases are advanced by .pi./6 radian in the electric angle from the respective centers of the first phase, second phase and third phase coils. These magnetic induction elements pick up only the plus-side output signals and let the current flow respectively to the aforesaid three-phased stator windings through an amplifier, whereby they form a driving circuit for driving said rotor shaft.
REFERENCES:
patent: 3783359 (1974-01-01), Malkiel
patent: 4135120 (1979-01-01), Hoshirin et al.
patent: 4258299 (1981-03-01), Takeda et al.
Hagino Hiroshi
Kotake Eiichi
Nakamura Kuniyoshi
Bergmann Saul M.
Japan Servo Co.
Truhe J. V.
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