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Abstract(s)
Este trabalho tem como objectivo principal o desenvolvimento do arranque e controlo de velocidade do motor de indução utilizando técnicas de automação. Efectuou-se inicialmente um estudo sobre o motor e as suas características, bem como as técnicas tradicionais de controlo. Numa fase posterior contrapôs-se as técnicas tradicionais de controlo do motor de indução com os dispositivos electrónicos actuais, quer seja, o soft-starter como também o inversor de frequência.
Foi estudado também o soft-starter, o inversor de frequência, bem como o autómato, com vista a implementação prática. Implementação essa realizada de forma genérica, ou seja, com a possibilidade de se adaptar aos mais diversos processos, quer industriais ou comerciais.
Desta forma aperfeiçoamos a automação do arranque e controlo de velocidade do motor de indução presente em muitos processos industriais. Consequentemente optimizamos os processos industriais e com isso aumentamos a segurança, produtividade e qualidade do produto final.
The aim of this work is to develop the start and speed control of an induction motor using automation techniques. First, a study was carried on the motor and its characteristics, as well as the traditional control techniques. Later, traditional control techniques of the induction motor were compared to current electronic devices, both in terms of the soft-starter and the variable speed drive. The soft-starter, the variable speed drive, as well as the programmable controller were also studied with a view to their implementation. The implementation was carried out in general, that is, with the possibility of adapting it to the most diverse industrial or commercial processes. Thus, we improved the automation of the start and speed control of the induction motor in many industrial processes. Consequently we optimized the industrial processes and thereby increased safety, productivity and the quality of the final product.
The aim of this work is to develop the start and speed control of an induction motor using automation techniques. First, a study was carried on the motor and its characteristics, as well as the traditional control techniques. Later, traditional control techniques of the induction motor were compared to current electronic devices, both in terms of the soft-starter and the variable speed drive. The soft-starter, the variable speed drive, as well as the programmable controller were also studied with a view to their implementation. The implementation was carried out in general, that is, with the possibility of adapting it to the most diverse industrial or commercial processes. Thus, we improved the automation of the start and speed control of the induction motor in many industrial processes. Consequently we optimized the industrial processes and thereby increased safety, productivity and the quality of the final product.
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Keywords
Motor de indução Motor de indução - Controlo de velocidade Automação Autómato programável Inversor de frequência Soft-starter