Tractive effort control method and system for recovery from a wh

Details Tractive effort control method and system for recovery from a wh Tractive effort control method and system for recovery from a wh

1995-10-13

1997-08-26

Wysocki, Jonathan

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Slipping and/or racing control for electric motors

318362, H02P 300

Patent

active

056613784

ABSTRACT:
A wheel slip recovery method for a locomotive in which an internal combustion engine is connected in driving relationship to an electric power generator to supply electric power to a plurality of electric traction motors coupled to drive corresponding wheel-axle sets of the locomotive. The locomotive system includes a dynamic braking function in which an electrical resistance circuit is selectively coupled in parallel circuit arrangement with the generator for selectively receiving power from the traction motors during dynamic electrical braking. The inventive method detects a wheel slip condition which cannot be overcome by transfer of power from a slipping to a non-slipping wheel and selectively couples the dynamic braking resistance circuit into circuit with the power generator in a manner to reduce power supplied to the driven wheels to a level sufficient to allow the wheels to cease slipping without reducing power output from the generator.

REFERENCES:
patent: 3764867 (1973-10-01), Smith
patent: 3866979 (1975-02-01), Rabus et al.
patent: 4035698 (1977-07-01), Soderberg
patent: 4164872 (1979-08-01), Weigl
patent: 4401035 (1983-08-01), Spigarelli et al.
patent: 4950964 (1990-08-01), Evans
patent: 5163170 (1992-11-01), Grabowski

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