High Step-Up DC-DC Converter Using Built-In Transformer Voltage Multiplier Cell and Dual Boost Concepts

Guepfrih, Marcelo Flavio; Waltrich, Gierri; Lazzarin, Telles Brunelli

doi:10.1109/jestpe.2021.3063060

Cited by 48 publications

(31 citation statements)

References 49 publications

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“…Isolated converters isolate the output from the input electrically dividing circuit into two separate sections preventing the direct flow of current. This is achieved by using a high-frequency transformer but it increases the size and cost [3]- [6] of the converter. Isolated topologies are favoured in high power applications and where common ground between source and load is required.…”

Section: Introductionmentioning

confidence: 99%

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

Khan

Zaid²,

Mahmood

et al. 2021

IEEE Access

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High gain dc-dc converters are used in several applications which include solar photovoltaic system, switch-mode power supplies and fuel cells. In this paper, an ultra-high gain dc-dc boost converter is proposed and analysed in detail. The converter has a gain of six times as compared with the boost converter. The high gain is achieved by utilizing switched inductors and switched capacitors. A modified voltage multiplier cell (VMC) with switched inductors is proposed. The converter has a single switch which makes its operation easy. Moreover, the voltage across the switch, diodes and capacitors are less than the output voltage which increases the overall efficiency of the converter. The converter performance in steady-state is analysed in detail and it is compared with other latest high gain converters. The working of the converter in non-ideal conditions is also discussed in detail. The loss analysis is done using PLECS software by incorporating the real models of switches and diodes from the datasheet. To confirm and validate the working of the proposed converter a hardware prototype of 200 W is developed in the laboratory. The converter achieves high gain at low duty ratios and its performance is found to be good in open and closed loop conditions. INDEX TERMSBoost Converter, DC Microgrid, Duty cycle, Ultra High Gain, Voltage stress Battery Fuel Cell High Gain DC-DC Converter Solar PV Cell Low DC Voltage (12-60V) High DC Voltage (200 -300V

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Section: Introductionmentioning

confidence: 99%

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

Khan

Zaid²,

Mahmood

et al. 2021

IEEE Access

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“…Seguindo a metodologia apresentada em [26], a sensibilidade da variação da tensão de saída (V o ) em relação à variação da razão cíclica (D) é dada por:…”

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Conversor Boost com Células a Capacitor Chaveado e Indutor Acoplado

Loureiro¹,

Faistel²,

Toebe³

et al. 2021

Eletrônica de Potência

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Este artigo apresenta uma topologia de conversor CC-CC de alto ganho de tensão baseado no conversor boost com célula ladder de capacitor chaveado e indutor acoplado. A posição do enrolamento do secundário do indutor acoplado permite que eliminar possíveis picos de correntes causados pela célula de capacitor chaveado. Além disso, o conversor possui como características: elevado ganho estático, baixo esforço de tensão nos semicondutores, o que permite utilizar interruptor e diodos com baixas resistências intrínsecas; baixos valores de capacitores, visto que os capacitores da célula ladder de capacitor chaveado podem ser projetados na região de carga total sem que ocorram picos de correntes. No artigo é avaliado teoricamente o princípio de operação do conversor proposto, ganho de tensão, esforço de tensão e corrente, comparação com topologias similares encontrados na literatura, e por fim metodologia de projeto. Para validar essas análises, um protótipo de 200 W, 30 V/400 V foi implementado experimentalmente, alçando um rendimento máximo de 96,4 %.

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“…Thus, high step-up DC-DC converters have been investigated in recent years. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] In order to increase applications of RESs, this kind of converters ought to convert voltage with ultrahigh gain respecting to the other necessary quality factors. Because of simple structure of conventional boost converter (CBC), it seems as the first suitable choice for stepping up voltage of RESs.…”

Section: Introductionmentioning

confidence: 99%

“…Cascading of two conventional boost converters (CBC), called quadratic boost converter (QBC), can increase voltage gain as a quadratic function of duty cycle. 11,12,15,17 However, in this converter, a high voltage stress, which is equal to the output voltage, is placed on the power switch. Utilizing two power switches reduces voltage stress on the switches because of distributing voltage stress on them.…”

Section: Introductionmentioning

confidence: 99%

“…Renewable energy resources (RES) produce power with low DC voltage level that requires to be stepped up by utilizing DC‐DC converters. Thus, high step‐up DC‐DC converters have been investigated in recent years 1–20 . In order to increase applications of RESs, this kind of converters ought to convert voltage with ultrahigh gain respecting to the other necessary quality factors.…”

Section: Introductionmentioning

confidence: 99%

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Ultrahigh step‐up DC‐DC converter consisting quadratic boost converter, multiplier cell, and three windings coupled inductor

Abbasi

Tanha

Rezaie

2022

Circuit Theory & Apps

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This paper presents an ultrahigh step‐up converter with combination of a quadratic boost converter, a multiplier cell, and a three windings coupled inductor. Main advantages of the converter include its high voltage gain, low voltage stress on the switch and most of the diodes, continuity of input current with low ripple, and existence of a common ground between the source and load. Furthermore, requiring small inductors leads to high efficiency performance of the converter. To confirm superiority of the proposed converter, it has been compared with the converters consisting coupled inductors. Analysis of the converter has been performed for its main operation modes to validate its quality and quantity factors. A prototype is built in order to experiment its performance per different conditions and evaluate the analysis. Rated values per the experiments are 25, 500, and 200 W for the input voltage, output voltage, and output power, respectively.

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High Step-Up DC-DC Converter Using Built-In Transformer Voltage Multiplier Cell and Dual Boost Concepts

Cited by 48 publications

References 49 publications

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

A New Transformerless Ultra High Gain DC–DC Converter for DC Microgrid Application

Conversor Boost com Células a Capacitor Chaveado e Indutor Acoplado

Ultrahigh step‐up DC‐DC converter consisting quadratic boost converter, multiplier cell, and three windings coupled inductor

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