Simulación electromagnética del encapsulado de un acelerómetro MOEMS para uso en transformadores
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https://doi.org/10.66482/6mkvp037Palabras clave:
encapsulado, simulación 2D, Ansys Maxwell, alúmina, cobreResumen
El monitoreo y diagnóstico de transformadores de potencia es fundamental para garantizar la confiabilidad de los sistemas eléctricos. Se han desarrollado tecnologías que emplean sensores y dispositivos ópticos como solución para aplicaciones de potencia. En este trabajo se presenta un estudio del comportamiento electromagnético del encapsulado de un acelerómetro basado en un sistema micro-opto-electro-mecánico (MOEMS), bajo la influencia de un campo magnético externo generado por un transformador. El desempeño se evaluó mediante simulaciones bidimensionales en ANSYS Maxwell, comparando dos materiales: cobre (Cu) y alúmina (Al₂O₃). El modelo incluyó la simulación de un transformador con una bobina de 80 espiras, corriente de 20 A y frecuencia de 60 Hz. En el encapsulado de cobre, la exposición al campo magnético del transformador generó una densidad de corriente de Eddy de 15.76 A/m² y un campo magnético secundario de 0.2 μT. Con estos parámetros, se cuantificaron la potencia disipada por efecto Joule, la fuerza de Lorentz y la aceleración asociada, obteniéndose valores considerablemente bajos. En contraste, el encapsulado de alúmina no presentó corrientes inducidas ni campos secundarios, lo que indica una interacción electromagnética no apreciable.
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