A Discussion on recent advances in heavy electrical plant - The growth of turbogenerators

Abstract
The paper presents a general view on the growth of turbogenerator unit ratings. Evaluation of some of the parameters particularly important to growth of unit power output shows that further and substantial increase of unit rating is to be expected. Technological problems of increasing unit output are discussed for 2- and 4-pole generators, with mention of the possibilities and limitations of mechanical, electrical and thermal utilization. The present state of the author’s company in turbogenerator manufacture is illustrated by short descriptions of the 722 M V A-3600 rev/min Cumberland generators for Tennessee Valley Authority and the 1333 M V A-1800 rev/min Cook generator for American Electric Power as well as the supercharged hydrogen-cooled generators and generators with complete liquid cooling for the gigawatt range. The prospects of using superconducting rotor windings to achieve highest unit power outputs in the future are discussed.

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