ELECTRO-MAGNETIC FIELD ANALYZING METHOD AT MULTI-PHASE ALTERNATING CURRENT CIRCUIT

PURPOSE:To analyze an electromagnetic field when multi-phase alternating current electric equipment such as a three-phase induction motor, a three-phase synchronizing motor and a three-phase transformer is driven with the multi- phase alternating current voltage source such as the commercial power s...

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Bibliographic Details
Main Authors UMETSU KENJI, WAJIMA KIYOSHI, UEYAMA KOJI, NISHI SHUNJI
Format Patent
LanguageEnglish
Published 12.03.1993
Subjects
ANALOGUE COMPUTERS
CALCULATING
COMPUTING
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
COUNTING
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:PURPOSE:To analyze an electromagnetic field when multi-phase alternating current electric equipment such as a three-phase induction motor, a three-phase synchronizing motor and a three-phase transformer is driven with the multi- phase alternating current voltage source such as the commercial power system. CONSTITUTION:By applying for the Kirchhoff's second law respectively to closed circuits 1 and 2, concerning two mutually independent line currents IR and IT to flow at inductive load elements ZL1-ZL3, a circuit equation including back electromotive forces jomegapsiR, jomegapsiT and jomegapsiS at respective inductive load elements ZL1-ZL3 stipulated by the vector potential of the electro-magnetic field to be analyzed at respective inductive load elements ZL1-ZL3 is obtained, and in place of the conventional exciting current, by using these line currents IR and IT as an unknown variable, the electro-magnetic field is analyzed. The electro-magnetic field analysis can be performed of the multi-phase alternating current circuit which cannot be conventionally analyzed since the alternating current circuit is not mutually independent.
Bibliography:Application Number: JP19910245276