Drive arrangement with collectorless D.C. motor

Details Drive arrangement with collectorless D.C. motor Drive arrangement with collectorless D.C. motor

1985-03-21

1986-10-28

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02P 602

Patent

active

046201386

ABSTRACT:
Drive arrangement comprising a collectorless d.c. motor and a rpm-regulating arrangement. The motor comprises a permanent-magnet rotor and a stator winding arrangement. The latter is connected to a current source in dependence upon angular-position signals by means of an electrical commutation arrangement. The rpm-regulating arrangement produces a regulator signal that is a function of the deviation of the rotor's actual rpm from a desired rpm. There is provided an arrangement for modulating the regulator signal in synchronism with the rotation of the rotor. As a result of the action of the modulation arrangement, the current flowing in the stator winding arrangement between each two successive commutation operations initially builds up beginning at a point in time at least approximately coinciding with the point in time at which the commutation occurs, and the drops off again until a point in time at least approximately coinciding with the point in time at which the next-following commutation occurs.

REFERENCES:
patent: 3584280 (1971-06-01), Inagaki
patent: 3840761 (1974-10-01), Muller
patent: 3873897 (1975-03-01), Muller
patent: 3916272 (1975-10-01), Granleitner et al.
patent: 3942083 (1976-03-01), Takahashi et al.
patent: 4051420 (1977-09-01), Tanikoshi
patent: 4070606 (1978-01-01), Morozumi et al.
patent: 4230976 (1980-10-01), Muller
patent: 4240014 (1980-12-01), Muller
patent: 4430603 (1984-02-01), Muller

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