SCHERBIUS APPARATUS

PURPOSE:To obtain current of sufficiently small waveform distortion by a structure wherein primary windings of two wound-rotor induction motors are connected to a power source so that the respective directions of the phase rotations are opposite to each other, and the secondary windings thereof are...

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Bibliographic Details
Main Authors MUKAI KAZUMA, UCHINO HIROSHI
Format Patent
LanguageEnglish
Published 29.11.1989
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:PURPOSE:To obtain current of sufficiently small waveform distortion by a structure wherein primary windings of two wound-rotor induction motors are connected to a power source so that the respective directions of the phase rotations are opposite to each other, and the secondary windings thereof are connected to each other through cycloconverters. CONSTITUTION:A primary winding 2 of a first wound-rotor induction motor 1 is connected to a power source 12 so that the phase rotation is forward, while a primary winding 10 of a second wound-rotor induction motor 9 is connected to the power source 12 so that the phase rotation is reverse. As a result, the frequency supplied to cycloconverters 6, 7 and 8 is two times as large as that of the power source 12 in a synchronous speed. Therefore, since the power- source frequency of the cycloconverters 6, 7 and 8 becomes two times as large as the frequency of the power source 12, even though 6 pulse type cycloconverters are used, fineness of ignition control of the thyristors becomes equal to that of 12 pulse type cycloconverters. Accordingly, sufficient control performance can be obtained.
Bibliography:Application Number: JP19880120585