Design of Multilevel Inverter Topology for Cascaded Voltage Source Architectures

This paper introduces about two novel single phase Multi Level- Inverter (MLI) topologies with minimized switches ideal for cascaded structures for extracting different levels of output grid voltages. The philosophy essays a proportion in between incoming direct current amplitude as well as the preferred quantity of output voltage levels. The scheme explores incorporation of H-bridge together with the structure to alleviate switching losses to achieve the specified target of output (grid) voltage. The projected system requires the magnitudes including its switching devices to be arranged in binary or trinary fashion and there it maximizes the various levels of output voltage involved in the MLIs. It also introduces the multi carrier PWM technique along with phase disposition sequence (PD-MC-PWM) and a hybrid PWM (HPWM) formulation for synthesizing the firing pulses. The experimental outputs of the projected cascaded hybrid MLI topologies forge to validate the simulated results based on Matlab R2018a and entice a fresh scope for the use of MLIs.