Polytechnic and design, Vol. 4 No. 3, 2016.
Professional paper
https://doi.org/10.19279/TVZ.PD.2016-4-3-03
BOOST CONVERTER STEADY-STATE DEPENDANCE ON SWITCHING FREQUENCY
Željko Stojanović
orcid.org/0000-0002-1535-7665
; Zagreb University of Applied Sciences, Croatia
Igor Božić
; Zagreb University of Applied Sciences, Croatia
Marko Miletić
; Bjelovar University of Applied Sciences
Abstract
The boost converter is realized. By changing input voltage in its full range the steady-states of boost converter for a few switching frequencies are indentified. The waveforms of inductor current, ramp voltage and feedback voltage are taken. Based on those waveforms steady-states, period doubling bifurcations, border collision bifurcations and period doubling route to chaos are identified. The ranges of identified steady
states are shown in twoparameter bifurcation diagram with switching frequency and input voltage. By decreasing switching frequency ranges of input voltage which set fundamental period operation are getting narrower and ranges of input voltage which set subharmonic and chaotic steady-states are getting more numerous and broader. At the same time, input voltage causing bifurcations is lowering. On the basis of identified steady-states one can determine acceptable range of converter's switching frequency.
Keywords
boost converter; steady-state; switching frequency; bifurcation
Hrčak ID:
191501
URI
Publication date:
15.12.2016.
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