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S21 Vibrações e Análise Modal |
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Title:
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CÁLCULO DAS VIBRAÇÕES DE ORIGEM MAGNÉTICA EM UM MOTOR ELÉTRICO
CONSIDERANDO DIFERENTES CONDIÇÕES DE CARGA
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Summary :
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IN THIS PAPER A FINITE ELEMENT MODEL IS USED TO CALCULATE THE MAGNETIC ORIGIN FORCED VIBRATIONS OF A SQUIRREL CAGE INDUCTION MOTOR IN TWO DIFFERENT OPERATING CONDITIONS. THIS MODEL ALLOWS TO CALCULATE THE WINDINGS AND BARS CURRENTS, THE MAGNETIC FORCES AND MOTOR STRUCTURE DYNAMIC RESPONSE. THE FINITE ELEMENT METHOD IS EMPLOYED TO DISCRETIZE THE ELECTROMAGNETIC FIELD EQUATIONS AND THE B - METHOD IS USED TO DISCRETIZE THE TIME DERIVATIVES OF THE FIELD AND EXTERNAL CIRCUIT EQUATIONS. THE MAGNETIC FORCES ACTING ON THE SQUIRREL-CAGE INDUCTION MOTOR STATOR ARE OBTAINED BY A METHOD BASED ON THE MAXWELL S STRESS TENSOR. FROM IT, THE HARMONIC COMPOSITION OF THE MAGNETIC FORCES IS EVALUATED. THE SECOND STEP IN THIS WORK CONSISTS IN PROCEEDING WITH THE MECHANICAL FEM TO OBTAIN THE NATURAL AND FORCED RESPONSE OF THE STATOR MECHANICAL STRUCTURE. THE FORCED VIBRATIONS CALCULATIONS ARE VALIDATED BY MEASUREMENTS. |
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Author :
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Gerges, Samir 0
Neves, Carlos Guilherme Costa
Sadowski, Nelson 0
Soeiro, Newton Sure
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Paper View :
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