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Ingeniare. Revista chilena de ingeniería

versión On-line ISSN 0718-3305

Resumen

BENAVIDES-CORDOBA, Santiago; MUNOZ-GALEANO, Nicolás  y  CANO-QUINTERO, Juan B.. Develop of speed three-phase variator: programing focused on multitasking. Ingeniare. Rev. chil. ing. [online]. 2018, vol.26, n.2, pp.213-224. ISSN 0718-3305.  http://dx.doi.org/10.4067/S0718-33052018000200213.

This paper presents multitasking programing of a three-phase speed variator development. This focus has not been reported in technical literature, although it is relevant for engineering power electronics developers, students, and researchers. Hybrid multitasking programing is proposed for the implementation of task that speed variator must carry out. Needed tasks in the speed variator are described and programed in a microcontroller (dsPIC30F4012) using state machines, considering times and priorities with preemptive and cooperative multitasking. This paper proposes a programing form for speed variator that allow software develop since its early stage. The programing structure enables the use of microcontrollers with lower performance. Thus reduction of production costs could be achieved. A three-phase speed variator is presented that can change output-voltage frequency and amplitude without stops or interrupts. Validation of multitasking programming is done on an experimental prototype developed in the laboratory, evaluating the execution times of tasks.

Palabras clave : Multitasking; programing; three-phase speed variator; low cost; state machines; microcontroller.

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