In applications where the high voltage gain is
required, such as photovoltaic grid-connected system, fuel-cell and
high-intensity discharge lamps for automobile, high step-up dc-dc converters
have been introduced to boost the low voltage to a high bus voltage.
The
voltage gain of traditional boost converter is limited, considering the issues
such as the system efficiency and current ripple.
This paper proposes a class
of hybrid switchedinductor converters (H-SLCs) for high step-up voltage gain
conversion. First, the topological derivation of H-SLCs is deduced by combining
the passive and active switchedinductor unit; second, this paper illustrates
the operation modes of the proposed asymmetrical and symmetrical converters;
third, the performance of the proposed converters is analyzed in detail and
compared with existing converters; finally, a prototype is established in the
laboratory, and the experimental results are given to verify the correctness of
the analysis.
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