Design features of generators for Diesel-electric switcher locomotives

Simplicity and reliability have been kept foremost in generators recently developed for Diesel-electric switcher locomotives ranging from ten to 80 tons. New motors and control equipment have been developed at the same time. This paper deals especially with the generators, their electrical and mechanical features, and performance characteristics, both as power generators and as motors for engine starting from the locomotive battery. Operating fundamentally as self-excited generators, separate exciters have been eliminated. The simplicity of the generator windings has allowed corresponding simplicity of control circuits.