Frequency changers — Characteristics, applications, and economics

FREQUENCY CHANGERS have been discussed at various times during the past 20 years.
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At the 1944 AIEE summer technical meeting there was presented a thorough analysis of the design and operating characteristics of a new 20,000-kw electronic frequency changer.
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Its installation, together with increasing interest in railroad electrification for the immediate postwar period, has resulted in a renewed interest in frequency changers.