Brushless welding generator

Details Brushless welding generator Brushless welding generator

1977-06-02

1978-08-08

Hickey, Robert J.

Electricity: single generator systems

Generator control

Acyclic or homopolar-type generator

219133, 310178, 322 25, 322 63, H02P 930

Patent

active

041059638

ABSTRACT:
A brushless welding generator with a homopolar machine which supplies welding current, and has winding-free rotors with several pole rings. Each of these form an air gap of varying size around its periphery with the stator. The homopolar machine is divided into two electromagnetic parts, each having an exciting winding. The exciting field is controlled in one of the two electromagnetic parts in opposition to the welding current. One electromagnetic part, furthermore, has a further exciting winding fed by the welding current to control its exciting field. This further exciting winding produces an exciting field directed opposite to the exciting field of the first-mentioned exciting winding. A regulator controls the welding current of one exciting winding, and a signal derived from the welding current is applied to the regulator for representing an actual value. A triac is arranged in a feed circuit of the exciting current to be rectified, and this triac is connected in circuit by the regulator through a time-delay network.

REFERENCES:
patent: 2134510 (1938-10-01), Hague et al.
patent: 2261684 (1941-11-01), Jones
patent: 3229133 (1966-01-01), Sears
patent: 3649903 (1972-03-01), Fiedler
patent: 3863137 (1975-01-01), Mishima et al.

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