control method for dc / ac converter with hysteresis voltage with constant switching frequency, impulse

摘要

the invention achieves a method of control to hysteresis of current voltage converters monofasi dc / ac companyto maintain a constant to a value wanted (f *) the frequency of switching of the converter control to hysteresis commanded by varying the tension produced by the converter as a result of varto the outgoing current (i) and the electromotive force against (and) of the cargo.the rate constant is obtained by varying the width of the band and hysteresis (h).by means of electric regnale (h ') produced by a circuit to estimate the width of the band.as said circuit estimates the extent of group can generate the signal estimate (h ') of the current amplitude (h) of the band.then by multiplying it by the ratio f / f (or t / t), with f the current switching frequency, the current period of switchingf * frequency switching intentional and t *, the period of switching.