CONTROL UNIT OF POLYPHASE AC CURRENT

CONTROL UNIT OF POLYPHASE AC CURRENT

PROBLEM TO BE SOLVED: To allow the actual current value of each phase of polyphase AC current having the number of phases exceeding three phases follow the current instruction value of respective phase without phase delay. SOLUTION: In order to PWM-control a 5-phase motor 2, for example, through an...

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Hauptverfasser: KOSHIBA MASAHIDE, RYU KOKO, OKAMURA KOICHI, OSAWA HIROSHI, NOMURA HISAFUMI
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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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creator KOSHIBA MASAHIDE
RYU KOKO
OKAMURA KOICHI
OSAWA HIROSHI
NOMURA HISAFUMI
description PROBLEM TO BE SOLVED: To allow the actual current value of each phase of polyphase AC current having the number of phases exceeding three phases follow the current instruction value of respective phase without phase delay. SOLUTION: In order to PWM-control a 5-phase motor 2, for example, through an inverter 1, there are provided a coordinate converter 7 which converts, for coordinate transformation, phase currents i1-i5 to the current component on an orthogonal rotation coordinate and calculates at least two current components id and iq being AC current in a normal state, current controllers 8 and 9 to feedback-control the acquired current components, and a current controller 13 for direct feedback controlling of the current of respective phase. The inverter 1 is controlled using a synthetic value of the voltage command from the current controllers 8 and 9 and that from the current controller 13. COPYRIGHT: (C)2005,JPO&NCIPI
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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
title CONTROL UNIT OF POLYPHASE AC CURRENT
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