DIAGNÓSTICO DE FALLA ELÉCTRICA DE ESTATOR EN MOTORES BLDC DE VEHÍCULO LIGERO EN DIFERENTES REGÍMENES DE VELOCIDAD MEDIANTE LA TRANSFORMA DISCRETA DE FOURIER (STATOR’S ELECTRIC FAULT DIAGNOSIS IN BLDC MOTORS OF LIGHT VEHICLE IN DIFFERENT VELOCITY REGIMES BY MEANS OF THE DISCRET FOURIER´S TRANSFORM)

Rodolfo Jáuregui Acevedo, Francisco Javier Villalobos Piña, Ricardo Álvarez Salas, Carlos Humberto Saucedo Zárate

Resumen


Resumen
El presente trabajo muestra un esquema de diagnóstico de fallas eléctricas del estator en diferentes regímenes de velocidad y par constante en motores tipo BLDC de vehículos eléctricos ligeros mediante el análisis de tres escenarios diferentes de velocidad con una falla en el devanado del estator de la fase C. Para efectuar el diagnóstico de la falla se adquiere información eléctrica de las corrientes del estator y mediante el uso del fasor de espacio instantáneo de Park (ISP, por sus siglas en inglés) se analiza el módulo de dicho fasor mediante la técnica tiempo-frecuencia conocida como transformada rápida de Fourier (FFT, por sus siglas en inglés), lo cual permite identificar la firma de fallas eléctrica del estator en función de su velocidad para cada uno de los escenarios de velocidad estudiados.
Palabras Clave: Diagnóstico de falla, fasor de espacio instantáneo, motor BLDC, transformada rápida de Fourier.

Abstract
In this work a scheme of stator’s electric fault diagnosis is showed in different velocity regimes and constant torque in motors type BLDC of electric light vehicles by means of three different stages velocity analysis with a stator’s winding fault on phase C. To be made fault diagnosis the stator´s electrical currents information is acquired and by to use the instantaneous space phasor (ISP), the modulus of its phasor is analyzed through the time-frequency technique known as fast Fourier transform, thus allows identity the stator’s signature fault in function of its velocity for each of one velocity-schemes studied.
Keywords: BLDC motor, fast Fourier transform, fault diagnosis, instantaneous space phasor.

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Referencias


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