A 10-kw. 20,000-cycle alternator

This paper briefly discusses the advantages and limitations of the inductor and reaction types of alternators when designed for generating alternating currents of very high frequency. A new design for a reaction type alternator is described in which some of the limitations of the usual type of reaction alternator have been overcome in a way which enables such alternators to be designed for a higher frequency and greater output. The complete specification of a 10-kw., 20,000-cycle alternator of the new type are given and its operating characteristics, as determined by test, shown by a series of curves. A method is developed by means of which the various losses in the alternator may be separated and the complete operating characteristics of the alternator under any condition of load predetermined from the no-load tests.