A Reconfigurable, Single Inductor based Non-Isolated Multiple Port DC/DC Converter Topology for SPV Applications

Power management in the hybrid energy system is significantly reliant on power electronics infrastructure (PEI), which is generally used to diversify energy in between dissimilar multiple micro sources of energy with distinct V-I characteristics. The diverted energy sources are effectively employed with a suitable topology of PEI. This work described a new reconfigurable topology of a non-isolated multiple-port DC-DC converter for solar photovoltaic (SPV) applications. A single inductor is employed for energy diversification from multiple energy sources. The proposed converter has the ability to operate in all three operational modes, i.e., boost, buck-boost, and buck mode. The proposed converter has the capability to reconfigure the connection of input sources from parallel to series or vice-versa configuration. All the input sources used are of different levels to operate the converter at imitated mismatched voltage conditions and partial shading conditions, which is a dominant problem observed while integrating distinct SPV modules. As the description of converter functions, operation at different states is presented. The converter is operated in open loop configuration to ensure converter capability under SPV applications. The superiority of the converter under steady-state conditions is analyzed in MATLAB/Simulink.