A non-isolated single-input dual-output DC-DC boost converter with high-voltage gain

This paper presents a new structure of a high step-up DC-DC converter. The proposed converter has one input and two outputs with different voltage levels, suitable for applications that require multiple voltage levels such as photovoltaic systems, electric vehicles and DC microgrids. The proposed converter is expandable to more outputs and has a higher voltage conversion ratio compared to similar converters. The operational modes of the proposed converter are investigated and the conversion ratio of the converter is obtained. Additionally, small-signal equations of the converter are derived, and using state-space matrices, transfer functions of the converter are obtained and the controller is designed. Also, the proposed converter is compared with similar converters and power losses equations of the converter are derived. To investigate the converter's performance, simulations are done using MATLAB/Simulink software. Moreover, to validate the theoretical analysis, a laboratory prototype is implemented. The obtained results confirm the operation of the proposed converter. A new structure of a high step-up DC-DC converter is proposed. The proposed converter is dual output. The proposed converter has higher conversion ratio in comparison with other similar converters. Small signal modelling of the proposed converter is obtained. Comprehensive comparison between proposed converter and other converters is done. image