Filtro Activo de Potencia para la Excitación, Compensación de Armónicos y Desequilibrio en Generadores de Inducción Autónomos

Contenido principal del artículo

Aldo Javier Benitez

Resumen

 En este trabajo se propone un sistema de excitación para generadores de inducción autónomos que alimenta cargas no lineales y desequilibradas. El generador está compuesto por una máquina de inducción (MI) del tipo jaula de ardilla, el sistema de excitación posee un banco de capacitores y un convertidor de cuatro piernas, ambos conectados en paralelo con la MI. Las cargas no lineales y desequilibradas pueden ocasionar serios inconvenientes al generador ya que introducen corrientes distorsionadas que producen pérdidas, oscilaciones de potencia y de torque. Por ello se propone utilizar la teoría de la Potencia Reactiva Instantánea como algoritmo de control del sistema de excitación, la cual permite que el convertidor opere como Filtro activo paralelo de potencia e inyecte la potencia reactiva requerida para la excitación y regulación de tensión de la MI; además permite compensar los armónicos y desequilibrios introducidos por las cargas. De esta manera las tensiones y corrientes que circulan por la MI serán sinusoidales y equilibradas, disminuyendo las pérdidas y las oscilaciones de torque, aumentando el rendimiento y vida útil del sistema de generación. Se presentan resultados de simulación muestran la viabilidad de la propuesta. 

Detalles del artículo

Sección
Articulos - Trabajos de Investigación

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