A Novel Generalized Topology for Multi-level Inverter with Switched Series-Parallel DC Sources

Abstract

<p>This paper presents a novel topology of Single-phase multilevel inverter for low and high power applications. It consists of polarity (Level) generation circuit and H Bridge to generate both positive and negative polarities. The proposed topology can produce more output voltage levels by switching dc voltage sources in series and parallel. The proposed topology utilizes minimum number of power electronic devices which leads to the reduction of cost, size, and weight low and consumes low power which improves the efficiency. Switching pulses are generated using Phase disposition (PD) pulse width modulation technique. Finally the effectiveness of the proposed topology is verified using MATLAB/SIMULINK software tool. 7level asymmetrical multilevel inverter prototype hardware is prepared to support the proposed topology to verify the effectiveness and its validity.</p>

Analysis and Design of Single Phase High Efficiency Transformer less PV Inverter Topology

“…It offers reduced switching losses and has higher efficiency than Bipolar PWM but the CMV measured in this topology is varying and hence leads to large leakage current i.e. unsafe for operation of inverter [10,14,16].…”

A Simplified PWM Technique for Reduced Switch Count Multilevel Inverter

“…And for some medium voltage drives and applications, they need medium voltage and high power level. For this purpose, multilevel inverter [1]- [3] concept has been developed for high power and medium voltage applications. These inverters are not only used for high power applications, but also used for interfacing the renewable energy sources (RES) [4]- [6] to the utility grid.…”