Abstract
Formerly in the literature, a new interleaved-based boost converter was devised for multiple input voltage sources purposes. Nevertheless, when only a single input voltage source is connected to the 2-phase version of this converter, it can be seen as a compact interleaved boost with voltage multiplier (cIBVM). A brief description of cIBVM operation as well as the ideal modeling are already discussed in the literature for one specific range of duty-cycle. In this paper, we provide further analysis by considering the conduction and dynamic losses on the analytical model with a single voltage source. Moreover, we also obtained the analytical model considering the entire duty-cycle range showing that the converter can perform either a quadratic, a double or even a symmetric voltage gain depending solely on the switching strategy adopted. The analytical model was obtained using state-space representation and both its accuracy and the effectiveness of the results were validated from a Simulink-based cross validation and a complete sequence of experimental tests.
Highlights
The DC–DC converters are devices that play a fundamental role in the proper operation of microgrids [1]–[3], electric vehicles [4], [5] and satellite applications [6], [7]
Within this frame of reference, it is important to state that the voltage gain and efficiency of the DC–DC converter under analysis are usually the performance relations that concentrate the most of the technological improvement effort and motivate the study [10]
One of the most promising DC–DC converter topology reported in the literature is based on the
Summary
The DC–DC converters are devices that play a fundamental role in the proper operation of microgrids [1]–[3], electric vehicles [4], [5] and satellite applications [6], [7]. The IBVM became a very attractive DC–DC converter solution to high-power applications, a complete description was still missing in the literature For this reason, in [16] Fuzato and his collegues elaborated a detailed work exploring the IBVM operation and non-ideal behavior from an extensive state-space model which enabled the authors to report more realistic static voltage gain and efficiency performances and validate the modeling approach against a sequence of experimental results. CIBVM is an interleaved converter and it is naturally more reliable than single-phase converters For this reason, the cIBVM constitutes a more attractive DC–DC converter solution when compared to the conventional IBVM, and yet a complete description is not deeply explored in the literature, since the work initially presented by Zhou, Zhu and Luo addresses only an idealized modeling approach that does not provide a more complex and detailed evaluation of the non-ideal static voltage gain, the efficiency or even the effects of parasitic losses in the overall performance.
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