CONTROLLER FOR WOUND-ROTOR TYPE MOTOR

PROBLEM TO BE SOLVED: To enhance the workability of connection work, etc., and the maintainability by connecting a resistor having a plurality of taps through a rectifier circuit provided on the secondary, connecting a semiconductor switch with each tap, and turning the semiconductor switches on/off...

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Bibliographic Details
Main Authors FURUTA KATSUMI, KIMURA SHIGERU
Format Patent
LanguageEnglish
Published 27.05.1997
Edition6
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:PROBLEM TO BE SOLVED: To enhance the workability of connection work, etc., and the maintainability by connecting a resistor having a plurality of taps through a rectifier circuit provided on the secondary, connecting a semiconductor switch with each tap, and turning the semiconductor switches on/off depending on the operating conditions. SOLUTION: A resistor 111 is connected through a three-phase full-wave rectification circuit 100 comprising three pairs of rectifier elements 101-106 connected with an wound-rotor type motor on the secondary and semiconductor switches GTOs 121-125 are connected, respectively, with taps ta1-ta5 provided at the intermediate points of resistor 111. The GTO 121-125 is applied, to the gate, with a control signal from a controller depending on various operating conditions of the wound-rotor type motor 10 in order to control the secondary resistor. This controller enhance the workability of connection work at the resistance switching section on the secondary and the maintainability.
Bibliography:Application Number: JP19950293050