This paper presents a novel 15-level asymmetric Multilevel Inverter (MLI) topology designed for high-performance power conversion in renewable energy systems. The proposed inverter utilizes an innovative arrangement of three DC sources in a 1:2:4 voltage ratio, coupled with a unique switching strategy, to generate a near-sinusoidal output voltage with minimal harmonic distortion. The MLI’s structure comprises a full-bridge configuration augmented by three half-bridge cells, optimizing the trade-off between component count and output voltage quality. A comprehensive theoretical analysis of the inverter’s operation, including switching states and harmonic content, is presented. The prototype implementation employs isolated DC voltage sources, FPGA-based control logic, and dedicated driver circuits for each switch. Experimental results demonstrate the inverter’s capability to produce a 15-level output voltage waveform with a Total Harmonic Distortion (THD) of just 4.52%. Efficiency analysis reveals excellent performance across various load conditions, with peak efficiencies of 98%, 97.5%, and 97% for resistive, lightly inductive, and highly inductive loads, respectively. The inverter maintains high efficiency over a wide range of output power, showcasing its versatility. Detailed harmonic spectrum analysis and individual switch voltage waveforms corroborate the theoretical predictions.This MLI topology offers a compelling solution for applications demanding high power quality and efficiency, particularly in grid-connected renewable energy systems. The findings suggest significant potential for further development and scaling of this asymmetric MLI design for higher power applications.
Building similarity graph...
Analyzing shared references across papers
Loading...
G. Anusha
Krishan Arora
Himanshu Sharma
Journal of Engineering Research
Kangwon National University
Lovely Professional University
Birla Institute of Technology and Science - Hyderabad Campus
Building similarity graph...
Analyzing shared references across papers
Loading...
Anusha et al. (Wed,) studied this question.
www.synapsesocial.com/papers/69df2a99e4eeef8a2a6af914 — DOI: https://doi.org/10.1016/j.jer.2026.04.005