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Abstract
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A novel transformerless buck–boost dc–dc
converter is proposed in this paper. The presented converter
voltage gain is higher than that of the conventional
boost, buck–boost, CUK, SEPIC, and ZETA converters, and
high voltage can be obtained with a suitable duty cycle. In
this converter, only one power switch is utilized. The voltage
stress across the power switch is low. Hence, the low
on-state resistance of the power switch can be selected
to decrease conduction loss of the switch and improve efficiency.
The presented converter has simple structure, therefore,
the control of the proposed converter will be easy. The
principle of operation and the mathematical analyses of the
proposed converter are explained. The validity of the presented
converter is verified by the experimental results.
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