A Novel Dual-Input High-Gain Transformerless Multilevel Single-Phase Microinverter for PV Systems

Abdeen, Eltaib; Gaafar, Mahmoud A.; Orabi, Mohamed; Sheir, Ahmed; Youssef, Mohamed

doi:10.1109/tpel.2019.2941387

Cited by 15 publications

(15 citation statements)

References 39 publications

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“…In Equation (15), it can be seen that if the number of turns (N) is duplicated, the inductance value can reach four times its previous value. In this way, and considering that each coil has the same number of turns, the equivalent inductance value of the coils in series should be four times the individual value of each one.…”

Section: Mutually Coupled Inductancementioning

confidence: 99%

New Multifunctional Isolated Microinverter with Integrated Energy Storage System for PV Applications

et al. 2020

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This paper proposes a novel multifunctional isolated microinverter which is able to extract the maximum available power from a solar photovoltaic module and inject it into the power grid, while simultaneously charging a battery energy storage system (BESS). The proposed microinverter integrates a novel DC–DC power converter and a conventional DC–AC power converter. The DC–DC power converter is able to send electrical energy to the secondary side of a high-frequency transformer and to the BESS, using only two power switches. Throughout this paper, the converter topology, the operation modes, the control algorithms, and the development of a laboratory prototype of the proposed microinverter are described in detail. Moreover, simulation and experimental results are presented to demonstrate the feasibility of the proposed solution.

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Section: Mutually Coupled Inductancementioning

confidence: 99%

New Multifunctional Isolated Microinverter with Integrated Energy Storage System for PV Applications

et al. 2020

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“…However, the limited DC boosting gain makes such approaches adequate only for costly PV modules of 70-100 VDC output. A promising single phase microinverter topology has been recently introduced in Abedeen et al 16 where high boosting gain at reduced capacitance value has been realized. In this work, the DC link is formed of switched capacitor (SC) cells.…”

Section: Introductionmentioning

confidence: 99%

Multi‐input transformer‐less four‐wire microinverter with distributed MPPT for PV systems

Gaafar

Abdeen

Orabi

2021

Circuit Theory & Apps

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This paper proposes three-phase microinverter able to process the power of three PV modules simultaneously and independently; thus, efficient utilization of PV modules through distributed maximum power point tracking (DMPPT) is realized. The proposed microinverter employs switched capacitors (SCs) networks combined with three-phase voltage source inverter; it is named switched capacitor buck-boost voltage source inverter and abbreviated as SC-BBVSI.The connections of SCs networks are determined to fulfill the high boosting gain along with minimized leakage currents. In addition, low capacitances values can be employed for power decoupling purpose. Thus, in addition to DMPPT feature, three features of high boosting gain, high-reliable product, and minimized leakage current are realized without using the bulky and costly isolation transformer. In this paper, the operation modes of SC-BBVSI for single and multi-input scenarios are explained. The modulation strategy to realize these modes along with the control system design is presented as well. The relations required to design the passive elements and identify the device's stresses are derived. The features of the proposed microinverter are confirmed through detailed comparison with other recently reported topologies. Both simulation and experimental results are provided to verify the features of the proposed topology.

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“…Assim, cada módulo é capaz de operar em seu respectivo Ponto de Máxima Potência (MPP) de modo que o problema de redução da energia gerado pelo mismatch entre os módulos seja eliminado. Além desta, outras vantagens são apresentadas por Ibrahim et. al.…”

Section: Introductionunclassified

Modelagem E Controle De Um Conversor Sepic Isolado Com Célula Elevadora De Tensão Para Aplicação Em Microinversores Fotovoltaicos

Romitti

Andres

Dupont

et al. 2020

Anais Do Congresso Brasileiro De Automática 2020

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Este trabalho tem como principais objetivos realizar a modelagem e o controle de um conversor SEPIC isolado para a aplicação em microinversores fotovoltaicos. A fim de obter o elevado ganho estático necessário para esta aplicação, mas com baixos valores de razão cíclica e relação de transformação, é utilizada uma célula elevadora de tensão do tipo Greinacher no estágio secundário. Para obter o modelo dinâmico do conversor é adotada a técnica do modelo médio por espaço de estados e como estratégia de controle é utilizado um compensador Proporcional Integral (PI) que pode ser usado em conjunto com um Método de Rastreamento do Ponto de Máxima Potência (MPPT). Por fim, são apresentados resultados de simulação considerando um conversor de 340 W, a partir dos quais é possível validar a modelagem e também o projeto do controlador desenvolvidos.

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A Novel Dual-Input High-Gain Transformerless Multilevel Single-Phase Microinverter for PV Systems

Cited by 15 publications

References 39 publications

New Multifunctional Isolated Microinverter with Integrated Energy Storage System for PV Applications

New Multifunctional Isolated Microinverter with Integrated Energy Storage System for PV Applications

Multi‐input transformer‐less four‐wire microinverter with distributed MPPT for PV systems

Modelagem E Controle De Um Conversor Sepic Isolado Com Célula Elevadora De Tensão Para Aplicação Em Microinversores Fotovoltaicos

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