A New Switched Capacitor Based Multi-Level Inverter with Fewer Capacitors

Singh, Ashutosh Kumar; Mandal, Rajib Kumar

doi:10.1080/00207217.2022.2094472

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…Table 3 shows the entries of these parameters for the proposed and reported SC-MLI configurations. The 13 and 17-level SC-MLI configurations, including single source, are reported in [5], [10], [11], [12], [13], [17], [18], [22], [23], [28], [34], and [35] the SC-MLIs including single source used for charging the capacitors require a large value of capacitors to maintain self-voltage balancing when high power factor loads are connected across the output of these SC-MLI. Further, the charging action of the capacitors may be restricted at low values of modulation indexes.…”

Section: Comparative Analysismentioning

confidence: 99%

“…The topology in [14] and [19] require 6 and 4 capacitors, while the proposed topology [P2] requires only 3 capacitors. The topology discussed in [14], [19], [34], and [35] requires switches having a high value of PIV and the TSV of the switch string is also high. However, the switches connected in the proposed 17-level SC-MLI [P2] undergo less voltage stress, and the TSV of the switches is significantly reduced as compared to [14] and [19].…”

Section: Comparative Analysismentioning

confidence: 99%

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Symmetric and Asymmetric Multilevel Inverter Topologies With Reduced Device Count

et al. 2023

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In this work, two new topologies of single-phase hybrid multilevel inverters for symmetrical and asymmetrical configurations are presented for use in drives and control of electrical machines and the connection of renewable energy sources. The proposed topology uses 2 dc sources, 12 switches, 1 flying capacitor, and 3 diodes to generate boosted 13-levels and 17-levels for symmetric and asymmetric configuration, respectively. Self-voltage balancing of its capacitor voltage regardless of load type, load dynamics, or modulation index is a key advantage of the suggested design. The higher performance of proposed topologies in terms of the total number of switches, TSV, THD, switch stress, and dc sources are demonstrated by comparing those with recently published topologies. In addition, a widely employed nearest level control modulation approach is used to provide output voltage levels with low THD. Finally, experiments were undertaken to validate the performance of the suggested topology.INDEX TERMS Multilevel inverter (MLI), switched-capacitor, nearest level control (NLC), total standing voltage (TSV). MOHAMMED A. AL-HITMI (Member, IEEE) received the B.Sc. degree in electrical engineering from Qatar University, Doha, Qatar, in 1992, and the M.S. and Ph.D. degrees in control engineering from The University of Sheffield, in 1994 and 2002, respectively. He is currently an Associate Professor of electrical engineering with Qatar University, where he is also working as the Head of the Department of Electrical Engineering. He has conducted many research projects funded by national and industrial funding agencies. He has authored more than 50 research papers in top peer-reviewed journals and conferences. His research interests include control systems theory, neural networks, fuzzy control, and electric drive systems. He is involved in several administrative committees in leadership roles with Qatar University. He is also serving as a reviewer for many top journals. MD. REYAZ HUSSAN (Student Member, IEEE) received the B.Tech. and M.Tech. degrees in electrical engineering and instrumentation and control

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Section: Comparative Analysismentioning

confidence: 99%

Section: Comparative Analysismentioning

confidence: 99%

Symmetric and Asymmetric Multilevel Inverter Topologies With Reduced Device Count

et al. 2023

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“…For FC, it is required 36 capacitors, 16 switches and a DC source to generate nine-level. Conventional MLIs are surely more advantageous than two-level inverters but it too has some limitations such as large number of switches requirement, in some case numbers of DC voltage source, and multiple capacitors [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

An efficient and high gain switched-capacitor based multi-level inverter

Anand

Mandal

2022

Eng. Res. Express

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A new switching-capacitor-based boosting multilevel inverter is described in this paper. A nine-level voltage waveform is produced using 10 switches, one-diode, and two-capacitors. Each fundamental cycle contains numerous occurrences of capacitor voltages being linked in parallel with the source voltage, resulting in self-balancing capacitor voltages. Proposed topology has built in polarity changing ability so no H-bridge is required. This paper describes a simple pulse-width modulation system based on logic gates that maintains power balance among the capacitors. For obtaining the higher voltage gain extended topology of proposed topology is also presented. The prototype’s experimental results are provided for verifying the working and boosting capability by four times of source voltage. A thorough comparison with contemporary topologies demonstrates the cost-effectiveness of the suggested topology, as well as the fact that it is a simpler construction that requires less space and consumption of resources.

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