A Novel Reliable Five-Level Multilevel Inverter for Critical Loads
| International Journal of Electrical and Electronics Engineering |
| © 2023 by SSRG - IJEEE Journal |
| Volume 10 Issue 10 |
| Year of Publication : 2023 |
| Authors : Priya R. Patil, M. Pushpalatha Kumari, T. Devaraju, Parvathi, T. Kosaleswara Reddy, G.G. Rajasekhar |
10.14445/23488379/IJEEE-V10I10P110
How to Cite?
Priya R. Patil, M. Pushpalatha Kumari, T. Devaraju, Parvathi, T. Kosaleswara Reddy, G.G. Rajasekhar, "A Novel Reliable Five-Level Multilevel Inverter for Critical Loads," SSRG International Journal of Electrical and Electronics Engineering, vol. 10, no. 10, pp. 89-97, 2023. Crossref, https://doi.org/10.14445/23488379/IJEEE-V10I10P110
Abstract:
This work discusses a Fault-Tolerant (FT), highly Reliable Five-Level (RFL) Multilevel Inverter(MLI) that can persist to function still if one or more power switches have an open single switch fault or a specific multi-switch fault. Consecutively to provide quality output voltage profile, the requirement of power switches such as IGBTs used in DC-AC converters is high in number; as a result, they are more likely to fail. Consequently, reliability is among the most critical challenges in MLIs in numerous applications. At the same time, while compromising crucial components (such as FT, charge balance management, and so on), reduced component MLIs may deliver the highest precision in output voltage waveform. For MLIs to function fault-tolerantly, redundant switching states have been stressed regarding switch failures. This work is aimed to provide a unique RFLI during an Open Circuit (OC) failure on a single or several switches for obtaining reliable operation. As a result, the suggested Reliable Five-Level Inverter (RFLI) structure is thought to have fewer components and must fulfill the functioning criteria for the time being. A suitable FT switching method is used in concurrence with appropriate fault clearing to obtain the requisite output voltage waveforms, resulting in dependability. The proposed RFLI architecture offers superior results regarding THD, cost, and efficiency during FT operation. The presented RFLI topology has been validated by using the MATLAB tool.
Keywords:
Fault-tolerant, Reliability, Reduced switch count, Multilevel Inverter, Harmonic distortion.
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