A comparative analysis of grid-tied single-phase transformerless five-level NPC-based inverters for photovoltaic applications

Iturriaga‐Medina, Samuel; Limones-Pozos, Cesar A.; Martinez‐Rodriguez, Panfilo R.; Escobar, G.; Sosa, José M.; Fernández, A.; Martinez-Garcia, Juan F.

doi:10.1109/ciep.2016.7530778

Cited by 21 publications

(9 citation statements)

References 11 publications

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“…corrente com menor distorção harmônica, minimizando problemas de ruído e compatibilidade eletromagnética (Pires et al, 2011). Em sistemas fotovoltaicos, topologias multiníveis do tipo NPC (neutral point clamped ) (Sezen et al, 2014;Andrade and da Silva, 2015;Iturriaga-Medina et al, 2016), capacitor flutuante (flying capacitor ), conversores em cascata (cascaded multilevel converters) (Amaral et al, 2018), conversor multinível modular (MMC-Modular Multilevel Converter ) (Nademi et al, 2016;Basu and Maiti, 2019) e, mais recentemente, conversores multinível com transformadores em cascata (Pires et al, 2011;Kang et al, 2005) vêm sendo propostas e analisadas na literatura técnica.…”

Section: Conversorunclassified

Análise De Um Sistema Fotovoltaico Baseado Em Um Inversor Multinível Com Transformadores Em Cascata Usando Um Conversor Cc-Cc Boost

França

Rocha

Fernandes

et al. 2020

Anais Do Congresso Brasileiro De Automática 2020

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Neste trabalho é realizada a análise de um sistema fotovoltaico de dois estágios conectado a rede elétrica, composto por um conversor CC-CC tipo boost e um conversor multinível CC-CA com transformadores em cascata com número reduzido de componentes. O conversor CC-CA possui três braços, sendo um compartilhado entre os enrolamentos do primário de dois transformadores de baixa frequência que têm os enrolamentos do secundário (lado da rede monofásica) conectados em série. Os resultados de simulação são apresentados e analisados para duas condições, uma com um conjunto de painéis que não sofrem sombreamento e outra com um conjunto de painéis que sofrem um sombreamento parcial. A partir dos resultados é possível perceber que o sistema gera tensão multinível na saída, com menor distorção harmônica quando comparado com o conversor CC-CA convencional.

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Section: Conversorunclassified

Análise De Um Sistema Fotovoltaico Baseado Em Um Inversor Multinível Com Transformadores Em Cascata Usando Um Conversor Cc-Cc Boost

França

Rocha

Fernandes

et al. 2020

Anais Do Congresso Brasileiro De Automática 2020

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“…The circuit structure of the employed 5L-NPC converter topology is shown in Fig. 1 [13]. Based on the internal structure of the converter topology, the circuit should be controlled to generate five voltage levels in the grid-side terminals to realize the requirements for low total harmonic distortion (THD) with reduced dv/dt stress in the semiconductor devices.…”

Section: Mathematical Model and Design Of Controllermentioning

confidence: 99%

“…The dc-ac inverter is usually a two-level full-bridge inverter. Compared to the conventional two-level inverters, MCs such as neutral point clamped (NPC) converters present more advantages, including the better quality of output power, and higher voltage-handling capability using lower rated switching devices [13]- [15]. In recent years, the single-phase NPC inverters have gained significant popularity for their many emerging applications, such as energy storage systems (ESSs), active power filters (APFs), vehicle-to-grid (V2G), grid-to-vehicle (G2V), uninterruptible power supplies (UPSs), and renewable energy conversion systems (RECSs).…”

mentioning

confidence: 99%

An Amorphous Alloy Magnetic-Bus-Based SiC NPC Converter With Inherent Voltage Balancing for Grid-Connected Renewable Energy Systems

Khan

Islam

Guo

et al. 2019

IEEE Trans. Appl. Supercond.

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This paper presents an amorphous alloy magnetic busbased neutral point clamped (NPC) converter for grid-connected renewable generation systems. In the proposed system, the amorphous alloy high-frequency high-power density multiwinding magnetic bus generates balanced dc supplies for the fivelevel 5L-NPC converter for high-quality power conversion. Compared to the traditional NPC converter topologies, the proposed magnetic bus-based architecture does not require any control circuit for voltage balancing of the series connected capacitors. The magnetic bus inherently overcomes galvanic isolation issues and may reduce the size of the boosting inductor. In this paper, a finite control set model predictive control (FCS-MPC) algorithm is derived to control the grid-connected 5L-NPC inverter for multilevel voltage synthesizing, while realizing the user-defined active and reactive power values. To verify the proposed concept, a simulation model is developed and analyzed in MATLAB/Simulink environment. To validate the technology a scale down prototype test platform is developed in the laboratory with silicon carbide switching devices which realize high blocking voltage, low power dissipation, high switching frequency and high-temperature operation. Based on the simulation and the experimental results, it is expected that the proposed converter will have a great potential for widespread application in renewable generation systems including superconducting generator-based wind turbines. Index Terms-Amorphous alloy, magnetic bus, neutral point clamped (NPC) converter, capacitor voltage balancing, control, silicon carbide switching devices, superconducting wind generator. I. INTRODUCTIONN order to reduce the size and weight of the wind turbine nacelle, the high temperature superconducting (HTS) cable based generator has been gaining significant interest in recent years [1]- [7]. The weight and volume of superconducting Manuscript

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“…1(f), if both diodes are replaced with active switches in asymmetrical 5-level NPC (Fig. 1(e)), a new ANPC asymmetrical converter can be obtained [11], [12]. In this converter, 2 switches are operating at fundamental frequency [12].…”

Section: Introductionmentioning

confidence: 99%

Operation and Efficiency Analysis of a Five-Level Single-Phase Hybrid Si/SiC Active Neutral Point Clamped Converter

Najjar

Shahparasti

Kouchaki³

et al. 2022

IEEE J. Emerg. Sel. Topics Power Electron.

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A comparative analysis of grid-tied single-phase transformerless five-level NPC-based inverters for photovoltaic applications

Cited by 21 publications

References 11 publications

Análise De Um Sistema Fotovoltaico Baseado Em Um Inversor Multinível Com Transformadores Em Cascata Usando Um Conversor Cc-Cc Boost

Análise De Um Sistema Fotovoltaico Baseado Em Um Inversor Multinível Com Transformadores Em Cascata Usando Um Conversor Cc-Cc Boost

An Amorphous Alloy Magnetic-Bus-Based SiC NPC Converter With Inherent Voltage Balancing for Grid-Connected Renewable Energy Systems

Operation and Efficiency Analysis of a Five-Level Single-Phase Hybrid Si/SiC Active Neutral Point Clamped Converter

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