Dual-Input High Gain DC-DC Converter with Single-Switch for Renewable Energy Sources Integration

Power generation is shifting towards renewable energy sources (RES) to reduce pollution and uncertainties regarding fossil fuels. Direct integrating to the load is not recommended due to the low voltage produced by these RES. A conventional boost converter is employed to connect the RES to the loads. The performance of these systems is subpar due to the converter’s low voltage gain, and they rely on transformers to enhance the voltage on the AC side, resulting in poor efficiency and a large size of the overall system. By enhancing the voltage gain on the DC side, high-gain power converters are employed as a DC-DC converter to solve the aforementioned issue and eliminate the need for additional transformers in the system. Also, to improve the reliability of RES, a dual-input high-gain quasi (DIHGQ) z-source power converter is recommended in this study to integrate RES. The converter’s operation is examined by using the theoretical waveforms and mathematical equations. The suggested converter’s analytical performance is verified using the MATLAB/Simulink platforms. Along with the steady-state performance, a state space average mathematical model is developed to analyze its dynamic performance. The merits of the DIHGQ converter are demonstrated by comparison with traditional high-gain topologies. The comparison demonstrates that the suggested DIHGQ is one of the options for integrating RES.