Enhanced High Gain Switched- Capacitor- DC-DC Converter Optimizing
Renewable Energy Integration
Abstract
The work elucidated in this scientific article presents a novel
non-isolated high gain switched capacitor (HGSC) DC-DC converter
engulfed for carbon neutral energy applications. A hybrid utilization of
complementary switching approach switches enables simplified control and
high voltage gain of HGSC even at low duty cycle owing to the switched
capacitor along with boost inductors. Further, the proposed structure
also features high efficacy, reduced voltage stress and current stress
on semiconductor switching devices. The proposed HGSC DC-DC converter
principle of operation along with the steady-state analysis and
different switching stages were discussed in detail. Small signal
analysis has been performed to analyze the stability of the proposed
converter, whereas an averaging technique is performed to know its
dynamics performance. Furthermore, the converter is thoroughly analyzed
in terms of power losses. For comparing the practical efficiency of the
designed converter, non-idealities voltage gain is derived. The
efficiency of the proposed converter is validated practically and
extensive performance comparison is carried out with other solutions in
the literature. When a supply of input voltage 20 V feed into the
proposed converter. It produces an output voltage of 140 V to 240 V
output. A 200W laboratory proto model is developed; accordingly
conducted extensive experimental analysis to validate the feasibility of
the proposed HGSC DC-DC converter topology.