Extendable Switched-Capacitor Multilevel Inverter With Reduced Number of Components and Self-Balancing Capacitors

Bana, Prabhat Ranjan; Panda, Kaibalya Prasad; Padmanaban, Sanjeevikumar; Panda, Gayadhar

doi:10.1109/tia.2020.3018422

Cited by 36 publications

(26 citation statements)

References 34 publications

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“…To demonstrate the advantages and drawbacks of proposed cascaded MLI topologies, a comprehensive comparison is arranged among the proposed MLI topology and other cascaded MLI topologies. The comparative study is performed in terms of the number of power switches, DC voltage sources, maximum on-state switches, peak switch voltage, and magnitude of (TSV) to validate the new capabilities of the proposed topology in competition with other reported topologies [17]- [30].…”

Section: Comparison Studiesmentioning

confidence: 99%

“…7(b), it is obvious that the proposed cascaded MLIs in both symmetric and asymmetric states (proposed-I, II) require fewer DC sources which are considered another strength of proposed topologies. Although [30] (R26) uses needed a low dc voltage source two to generate high voltage levels but it needs a high number of capacitors. Fig.…”

Section: Comparison Studiesmentioning

confidence: 99%

“…Regarding switched-capacitor MLIs, recently different 25level topologies have been reported [27]- [30]. [27] presents a modified 5-level T-type inverter that needs one capacitor instead of a conventional one that requires two capacitors.…”

Section: Introductionmentioning

confidence: 99%

“…In [30], an extendable switched-capacitor MLI, has been developed for the MLI. The main topology is a 25-level switched-capacitor MLI that uses two dc sources and two capacitors.…”

Section: Introductionmentioning

confidence: 99%

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Reduced Switch Multilevel Inverter Topologies for Renewable Energy Sources

Sarebanzadeh

Hosseinzadeh²,

Garcia

et al. 2021

IEEE Access

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This article proposes two generalized multilevel inverter configurations that reduce the number of switching devices, isolated DC sources, and total standing voltage on power switches, making them suitable for renewable energy sources. The main topology is a multilevel inverter that handles two isolated DC sources by ten power switches to create twenty-five voltage levels. Based on the proposed main topology two generalized multilevel inverters are introduced to indicate flexibility in designing and also to minimize the number of elements. The optimal topologies for both extensive multilevel inverters are derived from different design objectives such as minimizing the number of elements (gate drivers, DC sources), achieving a large number of levels, and minimizing the total standing voltage. The main advantages of proposed topologies are a reduced number of elements than other multilevel inverters based on the comparison studies which is performed among the proposed topologies and other topologies. The power loss analysis and standalone PV application of the proposed topologies are discussed. The experimental results are presented for the proposed topology to demonstrate the correct operation of the proposal.INDEX TERMS single-phase multilevel inverters; generalized topologies; cascaded multilevel inverters; symmetric and asymmetric operations, renewable energy sources, photovoltaic system.

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Section: Comparison Studiesmentioning

confidence: 99%

Section: Comparison Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In [30], an extendable switched-capacitor MLI, has been developed for the MLI. The main topology is a 25-level switched-capacitor MLI that uses two dc sources and two capacitors.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reduced Switch Multilevel Inverter Topologies for Renewable Energy Sources

Sarebanzadeh

Hosseinzadeh²,

Garcia

et al. 2021

IEEE Access

View full text Add to dashboard Cite

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“…Device count can be reduced by asymmetrical configuration, but that increases the voltage stress on switches and, in turn, the TSV. Another attempt to increase the level generated with a low device count is made in [35]. A switched capacitor is used to boost the output.…”

Section: Introductionmentioning

confidence: 99%

Asymmetrical 17-Level Inverter Topology With Reduced Total Standing Voltage and Device Count

et al. 2021

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Voltage source Multilevel Inverters (MLIs) are vital components for medium voltage and high-power applications due to their advantages like modularity and better power quality. However, the number of components used is significant. In this paper, an improved asymmetrical multilevel inverter topology is proposed producing 17-levels output voltage utilizing two dc sources. The circuit is developed to reduce the number of isolated dc-sources used without reducing output levels. The circuit utilizes six two-quadrant switches, three four-quadrant switches and four capacitors. The capacitors are self-balancing and do not require extra attention, i.e. the control system is simple for the proposed MLI. Detailed analysis of the topology under linear and non-linear loading conditions is carried out. Comparison with other similar topologies shows that the proposed topology is superior in device count, power quality, Total Standing Voltage (TSV), and cost factor. The performance of the topology is validated for different load conditions through MATLAB/Simulink environment and the prototype developed in the laboratory. Furthermore, thermal analysis of the circuit is done, and the losses are calculated via PLECS software. The topology offers a total harmonic distortion (THD) of 4.79% in the output voltage, with all the lower order harmonics being less than 5% complying with the IEEE standards.

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A new buck‐boost integrated multilevel inverter with reduced capacitors and capacitor size for low‐frequencyACapplications

Babu

Narasimharaju

Rathore

2021

Int Trans Electr Energ Syst

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This paper proposes a new buck-boost integrated multilevel inverter with reduced capacitors and capacitor size. The proposed multilevel inverter consists of a 5-level basic unit formed by two interleaved buck-boost converters, whose outputs are cascaded with the source to achieve a voltage gain of five. The capacitors present in the buck-boost converters are charged at the high switching frequency; therefore, the proposed multilevel inverter utilizes small capacitors compared to the existing switched capacitor multilevel inverter (SCMLI) topologies. Moreover, capacitors presented in the conventional SCMLI are limited to fixed voltage charging, whereas the capacitors of the proposed inverter can be charged to desired voltages by adjusting respective buck-boost converter duty cycles. Hence, the proposed inverter requires a relatively less number of compact capacitors to produce the higher number of voltage levels. In this paper, the design and operation of the proposed 11-level inverter are presented. A 500 W proof-of-concept is developed and the experimental results are presented for linear and nonlinear loads under static and dynamic load conditions. In addition, a comprehensive comparative study of the proposed inverter and the recent SCMLIs is presented.buck-boost integrated, multilevel inverter, step-up inverter, switched capacitor | INTRODUCTIONRecently, multilevel inverter (MLI) topologies became popular in various applications such as photovoltaic (PV) energy conversion, electric vehicles (EV), and power quality improvement, etc., over the conventional two-level inverters. The

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Extendable Switched-Capacitor Multilevel Inverter With Reduced Number of Components and Self-Balancing Capacitors

Cited by 36 publications

References 34 publications

Reduced Switch Multilevel Inverter Topologies for Renewable Energy Sources

Reduced Switch Multilevel Inverter Topologies for Renewable Energy Sources

Asymmetrical 17-Level Inverter Topology With Reduced Total Standing Voltage and Device Count

A new buck‐boost integrated multilevel inverter with reduced capacitors and capacitor size for low‐frequencyACapplications

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