Electricity: single generator systems – Generator control – With armature or primary circuit control
Patent
1979-11-01
1982-02-02
Hickey, Robert J.
Electricity: single generator systems
Generator control
With armature or primary circuit control
219133, 363 87, 363161, H02M 7155, H02P 930, H02P 1316
Patent
active
043141951
ABSTRACT:
A solid state control circuit is connected to the output of an engine or motor driven alternator to provide a direct current output primarily for welding purposes. The control circuit includes gate controlled thyristors (SCRs) which are gated on at precise times within each cycle in order to provide an output having desired characteristics, such as constant current or constant voltage. Synchronizing windings associated with the alternator provide signals used to control the time of gating for the SCRs. Circuit means are included to insure that the control signals will be unaffected by any disturbances generated within the synchronizing signals due to the operation of the SCRs, and one such means includes an amplifier having a feedback circuit providing a hysteresis greater than any voltage change in the synchronizing signal caused by the operation of the SCRs.
REFERENCES:
patent: 3505587 (1970-04-01), Carroll et al.
patent: 3593121 (1971-07-01), Jones
patent: 3621368 (1971-11-01), Jules
patent: 3676694 (1972-07-01), Schneider et al.
patent: 3704408 (1972-11-01), Schroeder
patent: 3770976 (1973-11-01), Stroud et al.
patent: 3832620 (1974-08-01), Pollard
patent: 4031455 (1977-06-01), Beck
patent: 4117389 (1978-09-01), Hazumi et al.
Hickey Robert J.
Hobart Brothers Company
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