WSEAS Transactions on Circuits and Systems
Print ISSN: 1109-2734, E-ISSN: 2224-266X
Volume 22, 2023
Floating Tristate Double Boost Converter and a Modification
Author:
Abstract: Two concepts are combined in this paper. First, the tristate concept, where the electronic switch of a
DC/DC converter is replaced by a combination of two electronic switches and an additional diode. This leads to
two interesting features: first the voltage-transformation ratio can be linearized and second the system can be
transferred into a phase minimum system, which makes the control easier. The second two tristate Boost
converters are combined to a floating double Boost converter. The basic function of the converter is explained.
The large and the linearized small signal models are derived, transfer functions calculated, and Bode plots
drawn. The dynamic behavior is studied with transfer functions and by circuit simulations done with LTSpice.
The inrush is studied and a modification of the converter is shown to avoid dangerous overcurrents.
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Keywords: Boost converter, floating converter, tristate converter, modified converter, modeling, large signal
model, linearization, small signal model, transfer function
Pages: 298-308
DOI: 10.37394/23201.2023.22.30