Apparatus for synchronization of a motor

Details Apparatus for synchronization of a motor Apparatus for synchronization of a motor

1975-02-04

1977-02-08

Dobeck, B.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318318, H02P 736

Patent

active

040074080

ABSTRACT:
Synchronization apparatus for a motor comprising a maintenance circuit furnishing to the motor the necessary energy for its rotation and delivering a frequency fm proportional to its speed, and utilizing a precise frequency fp furnished, for example, by a quartz oscillator connected to a frequency divider. Connected to a bistable phase comparator are the output frequency f1 = fp/x of a divider by x, and the output of frequency f2 of a divider by x + .alpha. to the input of which divider there is added .alpha.y impulses to each cycle of the frequency fm. The output of the phase comparator acts on the maintenance circuit such as to interrupt or re-establish the distribution of the energy to the motor according to whether this output is in one state or the other such that f2 is equal and in phase with f1 and fm is sychronized to a mean value equal to fp/xy for which .alpha., x, and y are whole numbers.

REFERENCES:
patent: 3096483 (1963-07-01), Ransom
patent: 3646417 (1972-02-01), Cassie et al.
patent: 3681670 (1972-08-01), Kadokura et al.
patent: 3694716 (1972-09-01), Eland

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