Design and analysis of a single-phase transformerless multilevel 7L-TT-HB cascade inverter for renewable energy applications

Limones-Pozos, Cesar A.; Martinez‐Rodriguez, Panfilo R.; Sosa, José M.; Vázquez, G.; Izaguirre-Vera, Aldo

doi:10.1109/ropec.2018.8661437

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Due to their indigenous nature, they help reduce dependence on fossil fuels and purchase from external supplies, reduce the risk of a poorly diversified supply and favor the development of new technologies and job creation. The energy produced by the sun can be used in different ways, as it is the most responsible for the emergence of other renewable sources (Limones-Pozos et al, 2018), these can be used with different technologies. Solar energy can be transformed into electrical or thermal energy.…”

Section: Introductionmentioning

confidence: 99%

Photovoltaic system to improve energy efficiency

Carrillo

Flores

Roman

et al. 2022

ijpse

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Renewable energy sources are generation alternatives that can be used for different applications; Systems that take advantage of photovoltaic solar energy can be used to reduce energy demand during daytime hours, electrification of isolated homes, among other applications. In Ecuador there is a high potential for solar radiation, which can also be applied to project systems connected to the electricity grid or in the form of distributed generation, the objective of the research is to demonstrate the potential for solar radiation that affects the province of Manabí, specifically in the site "El Aromo" in the rural area of the city of Manta there is a land that provides the necessary conditions for the installation of a photovoltaic plant, for the development of the work the bibliographic review method was applied, the inductive deductive and synthesis analysis, the results that can be used were obtained from the installation that exists as a base of the 140 houses that consist in the field that belonged to the old project of Refinery del Pacífico.

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Section: Introductionmentioning

confidence: 99%

Photovoltaic system to improve energy efficiency

Carrillo

Flores

Roman

et al. 2022

ijpse

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“…In the literature there are two main possibilities for increasing the number of levels in the power converter field, which is by increasing the internal DC capacitors connected to a single DC source or by connecting several converters in the series at the AC side, in which each converter has an independent DC source. Focusing on the second alternative, cascade MLI can be developed by using symmetrical or asymmetrical voltage levels and by using different type of topologies such as: Full H-Bridge, 3L-TNPC converters or by performing a hybrid configuration [17]. Note that symmetrical cascade configurations have had a more industrial presence as the case of Cascade H-Bridge (CHB) converters [3] due to modulation and control simplicity compared with asymmetrical configurations [18].…”

Section: Introductionmentioning

confidence: 99%

Five-Level T-type Cascade Converter for Rooftop Grid-Connected Photovoltaic Systems

et al. 2019

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Multilevel converters are widely considered to be the most suitable configurations for renewable energy sources. Their high-power quality, efficiency and performance make them interesting for PV applications. In low-power applications such as rooftop grid-connected PV systems, power converters with high efficiency and reliability are required. For this reason, multilevel converters based on parallel and cascaded configurations have been proposed and commercialized in the industry. Motivated by the features of multilevel converters based on cascaded configurations, this work presents the modulation and control of a rooftop single-phase grid-connected photovoltaic multilevel system. The configuration has a symmetrical cascade connection of two three-level T-type neutral point clamped power legs, which creates a five-level converter with two independent string connections. The proposed topology merges the benefits of multi-string PV and symmetrical cascade multilevel inverters. The switching operation principle, modulation technique and control scheme under an unbalanced power operation among the cell are addressed. Simulation and experimental validation results in a reduced-scale power single-phase converter prototype under variable conditions at different set points for both PV strings are presented. Finally, a comparative numerical analysis between other T-type configurations to highlight the advantages of the studied configuration is included.

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Low and High Frequency Control Strategy for Asymmetrically Switched Cascaded Multilevel Inverter

Goopta

Bhattacharya

2022

IETE Journal of Research

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Design and analysis of a single-phase transformerless multilevel 7L-TT-HB cascade inverter for renewable energy applications

Cited by 4 publications

References 19 publications

Photovoltaic system to improve energy efficiency

Photovoltaic system to improve energy efficiency

Five-Level T-type Cascade Converter for Rooftop Grid-Connected Photovoltaic Systems

Low and High Frequency Control Strategy for Asymmetrically Switched Cascaded Multilevel Inverter

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