Resumen. La vida útil de los semiconductores de potencia está en un entorno ocasionado por las pérdidas de potencia por conmutación y conducción debido a la variedad de perfiles de temperatura a los que se ven sometidos los semiconductores durante su operación. Satisfacer el desempeño de la aplicación normalmente depende de la estrategia de control. Sin embargo, cumplir el objetivo por el sistemas de control sin considerar las pérdidas que se presentan en la etapa de potencia afectara la eficiencia de la etapa de potencia y disminuirá el tiempo de vida de los semiconductores. Este trabajo analiza las pérdidas que se generan en los MOSFET´s de un puente inversor fuente de tensión trifásico, que alimenta al motor de CD sin escobillas, al controlar su velocidad empleando un controlador difuso. Para observar si hay mejora se compara la respuesta del controlador difuso con la de un controlador PID. La implementación de los dos controladores se lleva acabo con la co-simulación (LabVIEW-Multisim). Los resultados de la co-simulación demuestran que el control difuso, comparado con un PID, presenta un mejor desempeño en términos del índice del error cuadrático en el control de la velocidad, además de presentar menos pérdidas de potencia, lo cual garantiza una extensión del tiempo de vida de los semiconductores de potencia. Palabras clave: control difuso, motor de cd sin escobillas, co-simulación, pérdidas de potencia.
Power electronic modules are subject to a variety of temperature profiles caused by cyclic thermo-mechanical stress on joints causing device failure. This paper shows how the life time cycle of the power electronic converter is affected in a fuzzy speed controller for a brushless DC motor drives (BLDC). Although there are several papers that show the performance of fuzzy logic speed controllers, there are not enough papers that show how the life time in power electronics is affected according to the power electronic stage losses. Thus, the losses in the power electronic stage are not included into the design of the controller. As a result, the industrial process in which brushless motor drives are installed, decrement their life time. This paper estimates the lifetime cycle in the power electronics stage when a fuzzy logic speed controller is implemented in BLDC. The analysis is based on co-simulation between LabVIEW and Multisim to calculate the response, stablished by the fuzzy logic controller, of temperature because to power losses conduction/switching of the semiconductor (IGBTs), on power electronic stage and the speed control. A comparison between a conventional linear controller and a fuzzy logic controller also is conducted and the results show a superior response in the speed response. In addition, the losses in the power electronic stage are reduced when the fuzzy logic speed controller is implemented. Hence, the fuzzy logic design is evaluated according to the speed response and lifetime in the power electronic stage.
En la última década, la bioeconomía circular está apareciendo en la agenda política cada vez con más intensidad, tanto a nivel internacional y comunitario, como a nivel nacional y regional. En el presente trabajo se realiza un análisis comparativo de las estrategias relativas a la bioeconomía circular en una selección de países (Austria,
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