AUGUST VINTON JOHANSSON
Engineers in Erie, PA
License number
Pennsylvania PE011999L
Category
Engineers
Type
Professional Engineer
Address
Address
Erie, PA 16511
Professional information
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Overload Detecting Scheme For An Electric Propulsion System For Traction Vehicles
Overload Detecting Scheme For An Electric Propulsion System For Traction Vehicles
US Patent:
4200832, Apr 29, 1980
Filed:
Apr 10, 1975
Appl. No.:
5/566888
Inventors:
August V. Johansson - Erie PA
Joseph D. Schneider - Erie PA
Joseph D. Schneider - Erie PA
Assignee:
General Electric Company - Erie PA
International Classification:
B60L 1102, H02H 708
US Classification:
322 59
Abstract:
For detecting electrical overloads in a traction vehicle propulsion system wherein the output of a prime mover-driven electric generator is controlled by varying the on-off duty cycle of an intermittently conductive switch connected in series with a field winding of the generator excitation means, monitoring means is connected across the field switch to produce an output signal in response to the field switch being continuously conductive for an abnormally long period of time which is indicative of an over-excited condition.