Device for automatic excitation of brushless electrical machines

Details Device for automatic excitation of brushless electrical machines Device for automatic excitation of brushless electrical machines

1974-12-11

1976-10-05

Pellinen, A. D.

Electricity: single generator systems

Automatic control of generator or driving means

Plural conditions

322 26, H02P 930

Patent

active

039847543

ABSTRACT:
A device for automatic excitation of brushless electrical machines, comprising: an A.C. exciter feeding a power converter built around controlled rectifiers disposed on a machine shaft; a converter control circuit employing optoelectronic elements with light-emitting diodes, composed of a booster unit, an inverter unit, and a unit intended for transfer of the converter into a non-controlled rectifier mode; and a photodetector receiving light signals from a stationary light source and located on the machine shaft. The device permits continuous control from boosting modes to inversion.

REFERENCES:
patent: 3660752 (1972-05-01), Pfeffer
patent: 3858107 (1974-12-01), Yarrow et al.

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