Abstract :
SUPERCHARGED HYDROGEN COOLING of generators represents a forward step in the steady progress to reduce the size of frame and the amount of material needed to obtain a given rating. Figure 1 shows a 60,000-kw generator with a supercharged rotor, tested a year ago, which has been in service for some time. Its active core length is 60 per cent of that of a normal machine and power plant space is reduced correspondingly.
