Double Boosted Voltage 5 Level Inverter Topology for Renewable Energy Applications

The article presents 5-level inverter topology, designed with the lowest component counts. It is suited for renewable energy application due to capable of double boosting feature. The switching capacitor approach is utilized in the proposed topology, therefore single DC source is needed for generation of 5-level. Due to diminished voltage and current stress, lowerrated switches are employed to form the proposed inverters. The level shifted phase-disposition carrier pulse width modulation (LSPDC-PWM) technique is used for the switching purpose, therefore the capacitor is self balanced without extra need of control, therefore lesser the computational burden as compared to the other published topologies. The detailed comparative analysis is shown in the tabular form for highlighting the benefits in terms of number of component count, total standing voltage, maximum standing voltage and voltage gain of the proposed topology. A theoretical study is provided for assessing power loss and selecting passive components. The proposed inverter is simulated using MATLAB/Simulink software to validate the theoretical study. The HIL Opal RT-5700 is employed for real-time validation purposes.