Synthesis and Comparative Analysis of Very High Step-Up DC–DC Converters Adopting Coupled-Inductor and Voltage Multiplier Cells

Andrade, António Manuel Santos Spencer; Mattos, Everson; Schuch, Luciano; Hey, H.L.; Martins, Mário

doi:10.1109/tpel.2017.2742900

Cited by 128 publications

(98 citation statements)

References 77 publications

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“…Os conversores mais comuns utilizados para essas aplicações são o Boost clássico [6], Boost interleaved [7], Boost quadrático [8], Z-source Boost [9], técnicas de células multiplicadoras [10]- [16], conversores em cascata [17] e o conversor Boost-Flyback [18], [19].…”

Section: Ci(s)unclassified

“…Eles são descritos na Tabela I e ilustrados na Figura 9. Ressalta-se que os esforções de tensão e corrente são os mesmos do BoostFlyback convencional e estão apresentados em [18] e [19]. A Tabela II apresenta uma comparação entre a topologia proposta e o conversor Boost-Flyback convencional.…”

Section: Ganho Estático Ideal Dos Conversores Duplounclassified

“…Essa estratégia garante controles independentes e simples. (19) As equações (18) e (19) apresentam, respectivamente, a função de transferência da corrente de entrada e da tensão do barramento pela razão cíclica. A obtenção da função de transferência da tensão do barramento pela corrente de entrada é feita ao dividir (19) por (18), como apresentado em…”

Section: S Lm Ts I T I T D T = (15)unclassified

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Conversor Duplo-Boost-Flyback de Alto Ganho

Cardoso¹,

Lazzarin²,

Waltrich³

2018

Eletrônica de Potência

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Resumo -Um conversor CC-CC não isolado de alto ganho é proposto nesse artigo, o qual é denominado Duplo-Boost-Flyback de Alto Ganho pelo fato de combinar dois conversores Boost-Flyback convencionais, conectados em paralelo na entrada e com saída flutuante. Essa nova topologia aumenta o ganho estático do conversor e reduz a ondulação da corrente de entrada. A topologia proposta é ideal para aplicações com fontes de alimentação com baixa tensão que precisam elevar consideravelmente a tensão para ser utilizada, como por exemplo, arranjos fotovoltaicos, células combustíveis e baterias. Este artigo apresenta princípio de operação, ganho estático, estratégia de controle e exemplo de projeto. A verificação experimental foi realizada a partir de um protótipo de 1 kW com tensão de entrada de 48 V e saída de 800 V, alcançando o ganho estático de 16,7. A eficiência máxima apresentada foi de 94,6% com 70% da carga e 93,9% com carga nominal.Palavras-Chave -Boost-Flyback, Conversor de Alto Ganho, Conversor CC-CC, Energia Renovável, Indutor Acoplado. HIGH GAIN DOUBLE BOOST-FLYBACK CONVERTERAbstract -A high gain step-up non-isolated dc-dc converter is proposed in this paper, named as high stepup Double Boost-Flyback, the topology combines two conventional Boost-Flyback converters in input-parallel and floating-output connections. The new topology increases the static gain and reduces the input current ripple in relation to the conventional Boost-Flyback topology. The proposed converter has potential to be used in low input voltage applications that requires a high gain as such as systems powered by photovoltaic panels, fuel cells and low voltage batteries. This paper presents principle of operation, static gain, control strategy, and design example. The experimental verification was carried out in a prototype of 1 kW with input and output voltage of 48 V and 800 V, respectively, reaching a static gain of 16.67. A maximum efficiency of 94.6% was achieved at 70% of load and 93.9% at rated load. A diversificação da matriz energética mundial tem crescido com o uso de energias renováveis como, por exemplo: painéis solares, geradores eólicos, energia maremotriz, geotérmica entre outras. Keywords -Alguns sistemas de energia renovável possuem baixos níveis de tensão de saída (entre 10 V e 50 V), portanto, precisam utilizar conversores CC-CC de alto ganho [1]-[5] para adequar suas tensões de saída para níveis usuais. Por exemplo, para a conexão com a rede elétrica que possui níveis de 127 V e 220 V RMS a tensão de saída dos sistemas deve ser adaptada para aproximadamente 200 V (para redes de 127 V rms) ou 400 V (para 220 V rms). Além disso, os níveis de tensão reduzidos na entrada fazem com que esses conversores operem com correntes elevadas, o que aumentam as perdas de comutação e de condução e, consequentemente, degradam a eficiência do sistema. Ganhos elevados e alta eficiência são os principais desafios dos conversores CC-CC.Os conversores mais comuns utilizados para essas aplicações são o Boost clássico [6]

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Section: Ci(s)unclassified

Section: Ganho Estático Ideal Dos Conversores Duplounclassified

Section: S Lm Ts I T I T D T = (15)unclassified

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Conversor Duplo-Boost-Flyback de Alto Ganho

Cardoso¹,

Lazzarin²,

Waltrich³

2018

Eletrônica de Potência

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“…In [4], the high conversion ratio was achieved through a multi-winding coupled In addition, these sources require a smooth input current to make maximal power tracking possible. To address these issues, several techniques have been proposed [1][2][3]. Some non-isolated topologies were proposed in [4][5][6][7][8][9][10] to provide a high voltage gain and reduce the voltage stress on switches and diodes.…”

Section: Introductionmentioning

confidence: 99%

An Isolated High Voltage Boost Current-Fed DC–DC Converter Based on 1:1 Transformer Multiplier Cells and ZVS Operation

2020

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This paper presents a high step up, current fed, interleaved, isolated DC-DC converter with voltage multipliers and ZVS (zero voltage switching). The converter provides zero voltage switching for all active switches and provides a high step up voltage gain that is suitable for very low voltage source applications, such as PV and other renewable sources. In addition, this converter allows the utilization of very low voltage stress switches and diodes. It reduces the current stress by interleaving the input current, and reduces the voltage stress by utilizing a half bridge based multiplier cell integrated configuration at the output voltage while providing high frequency galvanic isolation. The isolation is achieved through the use of 1:1 transformers which are easier to design, and the need for a high turns ratio is absent in this converter. The main theory of operation and the design guideline are presented, as is a laboratory prototype, all to validate the concept.Abstract: This paper presents a high step up, current fed, interleaved, isolated DC-DC converter with voltage multipliers and ZVS (zero voltage switching). The converter provides zero voltage switching for all active switches and provides a high step up voltage gain that is suitable for very low voltage source applications, such as PV and other renewable sources. In addition, this converter allows the utilization of very low voltage stress switches and diodes. It reduces the current stress by interleaving the input current, and reduces the voltage stress by utilizing a half bridge based multiplier cell integrated configuration at the output voltage while providing high frequency galvanic isolation. The isolation is achieved through the use of 1:1 transformers which are easier to design, and the need for a high turns ratio is absent in this converter. The main theory of operation and the design guideline are presented, as is a laboratory prototype, all to validate the concept.

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“…In [16], the boost-flyback converter is proposed, which requires a dissipative circuit to clamp the voltage on the output diode and also a high number of turns ratio to achieve high voltage gain. The boost-based circuits introduced in [17]- [19] also employ voltage multiplier cells, while the topologies presented in [20]- [25] use more than one active switch to perform interleaved operation ([20]- [22]) and soft switching on the devices ([23]- [25]). In [26], a high efficiency two-switch buck-based solution exhibiting a linear voltage gain and with soft-switching capability was proposed.…”

Section: Introductionmentioning

confidence: 99%

High-Voltage-Gain Integrated Boost-Sepic DC-DC Converter for Renewable Energy Applications

Assis¹,

Braga²,

Nascimento³

et al. 2019

Eletrônica de Potência

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This paper presents the analysis of a nonisolated high-voltage-gain single-switch dc-dc converter based on the integration of the boost and SEPIC topologies. The converter employs a voltage multiplier at the output of the SEPIC stage, which is connected in series with the output of the boost stage, aiming a high step-up ratio operation with limited duty cycle values. An accurate steady state analysis considering the influence of the leakage inductance of the SEPIC coupled inductor in the energy transfer process is detailed in the paper. The several theoretical results are then used to derive a design methodology for the circuit. Experimental results for a 500 W, 48 V input voltage, 400 V output voltage, 96.3% peak efficiency and 100 kHz switching frequency prototype are provided to demonstrate the feasibility of the proposed scheme and to validate the mathematical analysis carried out.

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Synthesis and Comparative Analysis of Very High Step-Up DC–DC Converters Adopting Coupled-Inductor and Voltage Multiplier Cells

Cited by 128 publications

References 77 publications

Conversor Duplo-Boost-Flyback de Alto Ganho

Conversor Duplo-Boost-Flyback de Alto Ganho

An Isolated High Voltage Boost Current-Fed DC–DC Converter Based on 1:1 Transformer Multiplier Cells and ZVS Operation

High-Voltage-Gain Integrated Boost-Sepic DC-DC Converter for Renewable Energy Applications

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