Five-Level Diode Clamped Multilevel Inverter (DCMLI) Based Electric Spring for Smart Grid Applications

Abstract

This paper presents the multilevel inverter (MLI) based Electric spring (ES) for smart grid applications. Due to the superior performance of Diode-clamped MLI (DCMLI) over other MLI topologies, in this paper ES is realized using 5-level DCMLI. Further the performance of two-level and five-level DCMLI based ES is investigated in terms of Total Harmonic Distortion (THD). It is ascertained that five- level DCMLI achieves voltage regulation with lesser THD in compensated voltage. Moreover, the use of DCMLI based ES as a distributed source is also elaborated. To extract the digitally simulated results and to validate system performance of MLI based ES, detailed simulation studies are carried out using MATLAB environment.