Electric motor having Hall generators and control circuit

Details Electric motor having Hall generators and control circuit Electric motor having Hall generators and control circuit

1985-07-02

1986-12-02

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, 310 68R, H02K 2908

Patent

active

046267522

ABSTRACT:
An electric motor has in combination a rotor having two permanent magnets of different polarities, two Hall generators responsive to the magnetic fluxes generated from the respective permanent magnets to produce different electric signals, two comparator circuits each arranged in combination with each of the Hall generators and operated in response to the resultant outputs, a logic circuit operated in response to the outputs of the comparators to produce the resultant outputs and a 3-phase inverter circuit having first, second and third stages each having two inputs and one output, the inputs of the first stage being connected to the outputs of one of the comparator circuits, the inputs of the second stage being connected to the outputs of the other of the comparator circuits and the inputs of the third stage being connected to the outputs of the logic circuit, the first, second and third stages having the outputs connected respectively to the delta connection points of coils wound around the electrodes of armature assembly. Further the electric motor has a pair of armatures and a pair of cylindrical rotors having a rotating shaft, the armatures being arranged side by side axially of the rotating shaft and electrically connected to each other, the cylindrical rotors each arranged as enclosing each of the armatures and being pressed against each other at one end thereof and having the one end secured to the rotating shaft.

REFERENCES:
patent: 3501655 (1970-03-01), Siefert
patent: 3693034 (1972-09-01), Inariba
patent: 4355249 (1982-10-01), Kenwell

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