AVALIAÇÃO DOS IMPACTOS DE HARMÔNICOS DE SEQUENCIA NEGATIVA E ZERO EM MOTORES ELÉTRICOS CLASSES IE2, IE3 E IE4 COM LIGAÇÕES DELTA E ESTRELA
Keywords: Efficiency classes, temperature, harmonics, line-start permanent magnet motor, motor terminal connection
AbstractThe presence of harmonics in electrical systems results in increases in consumption, temperature, and a reduction in the useful life of electric motors. Based on the above, the impact on these parameters could be reduced in the star connection (380 Volts), where a lower input current is obtained and with which the negative effects could be reduced. This work carries out an evaluation of the impacts of the 2nd and 3rd harmonics of negative and zero sequences in electric motors classes IE2, IE3 and IE4 connected in delta and star. The results show that the temperature is not affected to a great extent by the motor terminals connection, presenting small differences for the 3 analyzed motors.