Analysis and Design of a Parallel Switched-Inductor DC-DC Converter

Abstract

This chapter proposes a switched inductor configuration-based non-isolated DC-DC converter with high voltage gain. The proposed converter has two output capacitors instead of a single output capacitor for voltage boosting capabilities. Enhancement of the output voltage with the addition of more number of switched inductor cells is also possible in this configuration. The most advantageous factor of this proposed converter is the use of low-voltage semiconductor devices as they don't require large heat sinks. The converter operation in the steady state is fully analyzed. In addition to that, for the purpose of stability analysis, the small signal model for the proposed converter has also been developed. The frequency response using the small-scale transfer function of the converter has also been done by employing MATLAB. A suitable controller with suitable parameters has also been designed to improve the overall stability of the DC-DC converter in consideration. The results obtained after simulation verifies the feasibility of the converter.