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Open AccessArticle

A Novel Switched-Capacitor Multilevel Inverter Topology for Energy Storage and Smart Grid Applications

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Department of Electrical Engineering, Aligarh Muslim University, Aligarh 202002, India
2
Power Electronics and Renewable Energy Research Laboratory, Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
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School of Software and Electrical Engineering, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
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Industrial Engineering Department, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
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Department of Statistics and Operations Research, College of Science, King Saud University, Riyadh 11421, Saudi Arabia
*
Author to whom correspondence should be addressed.
Electronics 2020, 9(10), 1703; https://doi.org/10.3390/electronics9101703
Received: 1 October 2020 / Revised: 8 October 2020 / Accepted: 10 October 2020 / Published: 16 October 2020
(This article belongs to the Section Industrial Electronics)
The recent advancement in the application of the internet of things in the smart grid has led to an industrial revolution in the power industry. The Industry 4.0 revolution has already set in, allowing computers to interact for an efficient and intelligent approach in solving smart grid issues. multilevel inverters (MLIs) are an integral part of the smart grid system for integrating the distributed generation sources and storage energy systems into the smart grid. It attracted attention in industrial applications as they can handle high power and high voltage with an inherent feature of superior output voltage waveform quality. Moreover, its variant, the switched-capacitor MLI (SCMLI), has the added benefit of lesser DC supply requirement. In this paper, a switched-capacitor multilevel inverter topology has been proposed, which can operate in symmetric and asymmetric mode. The proposed SCMLI generate thirteen and thirty-one level output voltages for symmetric and asymmetric selection of DC voltage sources, respectively. The proposed SCMLI has a smaller number of switching devices for a given output voltage level as compared to other recently proposed topologies. A thorough comparison is presented with the recently proposed topologies on several parameters, including cost function. To validate the proposed topology, symmetric and asymmetric cases were simulated using Matlab® 2018a and the results were verified using an experimental hardware setup. View Full-Text
Keywords: energy storage systems; multilevel inverter; switched-capacitor; total harmonic distortion; nearest level control energy storage systems; multilevel inverter; switched-capacitor; total harmonic distortion; nearest level control
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Hussan, M.R.; Sarwar, A.; Siddique, M.D.; Mekhilef, S.; Ahmad, S.; Sharaf, M.; Zaindin, M.; Firdausi, M. A Novel Switched-Capacitor Multilevel Inverter Topology for Energy Storage and Smart Grid Applications. Electronics 2020, 9, 1703.

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