Multi-Input Multi-Output DC-DC Converter Network For Hybrid Renewable Energy Applications

In order to fulfill the increasing demands of energy requirements using the eco-friendly methods of energy generation instead of conventional hazardous methods that have caused severe damages globally. Hybrid renewable energy sources (HRES) are utilized for energy generation for developing smart cities and to make the power systems efficient. HRES systems are designed considering the advance requirements of energy consumption. As the technology is evolving, scientists have developed power saving appliances that operates on low level DC voltage. Since different appliances have different DC voltage ratings, to operate them efficiently multi-level DC voltages are often required. Conventional power systems offer single input and single output (SISO) configuration that cannot fulfill the power requirements of domestic and commercially utilized appliances. However, multi-input multi-output (MIMO) configuration is suitable to fulfil the multi-level voltage requirements. DC-DC converters are responsible to deliver the stable output power in HRES systems. This paper presents implementation of MIMO network using buck-boost converters. The proposed system is simulated in MATLAB Simulink with all possible scenarios. To control the operation of a buck-boost converter, individual control technique is integrated to sustain the desired output value during intermittent conditions. For that purpose, proportional integral (PI) is utilized as a control technique, that regulates the operation of a buck-boost converter with different input and output settings.