Desarrollo de un módulo de entrenamiento basado en conversores estáticos del tipo DC-DC con regulación en lazo cerrado.

Abstract

A module permitting to show the functioning of static converters of DC-DC type energy was developed considering the regulation process which will guarantee the constant voltaje at its exit, as a didactic help in the study of the commuted sources centering into two types of buck and boost configurations. The beginning was carried out by obtaining an approximate lineal model of the systems using the averaging technique in the space of state in which an expression of the mode transference function was analyzed describing the plant for the two states of the electronic breaker; the controller design for each system was carried out using classic control techniques considering as design parameters the máximum over-impulse and establishment time; such controller implemented in an engaged system; then the control algorithm was carried out to minimize error. For the design of the power stages of the sources calculi were conducted to select the inductor and the commutation frecuency so as to secure the continuos conduction mode, while for the election of the commutation elements the output power of the conversers was analyzed. Moreover, the inverted power in commuting to quantify the efficiency in each converser was analyzed resulting in the fact that the relationship between the efficiency and the ohmic value of the charge in the conversers is of a proportional form. It is concluded that the efficiency of the conversers tends to reduce as long as the commuting frequency increases. It is recommended for the electronic breaker to have a refrigeration system permitting to cool it, due to the power dissipation mainly in the elevator converser given its configuration; the spendthrift absence could burn it putting in short the input source and consequently generating excessively great currents.