Abstract
The progressive start of the industrial induction motors of alternating current (AC) is indispensable in any industrial process, at the present time it is counted on very reliable equipment that realize the variation of speed in progressive form, but these equipments are of high cost . In this article an alternative is presented to put into operation three-phase induction motors in a progressive way until reaching its nominal speed, which consists in using an Arduino plate for the control part and to be able to vary the external resistances of the power circuit. which will vary us to the angle of operation of the alternating signal, the power circuit consists of using an RC circuit and thyristor power devices that through the control allow us to modify the resistance of the RC circuit and thus vary the firing angle of the thyristor. As shown in the content of the work control is very easy to operate and of an economic cost, so the principle could be implemented in a sustainable way in other applications, such as industrial speed variators.
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