Title :
Suddenly applied loads carried by a variable-ratio synchronous-induction frequency changer
Author :
Darling, A.G. ; Kaufman, G.A.
Author_Institution :
Member of the industrial power division, industrial engineering divisions of the General Electric Company, Schenectady, N. Y.
Abstract :
The induction machine of this frequency changer has demonstrated its ability to start and carry rotating machine induction loads requiring 140 per cent of the kilovolt-amperes of the induction machine to start them without benefit of capacitive excitation. A-c amplidynes are used for automatic voltage regulation of the induction machine. D-c amplidynes are used for regulating the load through the frequency changer. So far as the authors are aware, this is the first commercial installation of this type to incorporate these features.
Keywords :
Contracts; Floods; Frequency; Load flow; Milling machines; Power generation; Power generation economics; Rotating machines; Steel; Voltage;
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
DOI :
10.1109/T-AIEE.1948.5059646
