High step‐up dc–dc converter based on modified active switched‐inductor and switched‐capacitor cells

Andrade, Jéssika Melo de; Coelho, Roberto F.; Lazzarin, Telles Brunelli

doi:10.1049/iet-pel.2020.0064

Cited by 29 publications

(29 citation statements)

References 31 publications

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“…However, there has been always a compromise of the performance with increasing number of cells involving switches and inductors. The total number count of the proposed converter and converter mentioned in [27] is same but the proposed converter operate with only three controlled switches and providing the flexibility in duty ratio selection which is not possible in the mentioned converter. As compared to the converter [20], the total number of the components is more and both converter providing the flexibility in duty ratio selection.…”

Section: Closed-loop Controlmentioning

confidence: 99%

Voltage Lift Switched Inductor Double Leg Converter With Extended Duty Ratio for DC Microgrid Application

et al. 2021

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In a DC microgrid, while integrating the low voltage sources such as Fuel cells and photovoltaics, an efficient DC-DC converter is crucially needed. Contributing to a high voltage whilst being operated on a low duty ratio is among the demanded features of the converter. For high voltage applications, the conventional converters are to be operated beyond the prescribed range of the duty ratio which may result in various detrimental effects such as voltage spikes, increased current ripples, and reduced efficiency. In this paper, a voltage lift switched inductor double leg converter (VLSIDL) has been proposed. This novel converter has the feature of attaining a very high voltage without using any complex circuitry such as transformer, multiple voltage lift circuits, cascaded or parallel structure, etc. This particular converter has three switches that are operated in three modes with two different duty ratios. Double duty control offers flexibility in the selection of duty ratio for a particular output voltage and a significantly high gain is easily attained. The double duty ratio not only provides an extended range but also improves the efficiency and performance of the converter. The steady-state analysis of the proposed converter is done analytically and the same is verified through the hardware prototype.

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Section: Closed-loop Controlmentioning

confidence: 99%

Voltage Lift Switched Inductor Double Leg Converter With Extended Duty Ratio for DC Microgrid Application

et al. 2021

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“…However, due to the presence of a transformer, size and cost are increased. Moreover, voltage spikes may produce in the converter 6 because of the transformer leakage inductances. This drawback can be solved by some techniques, such as active or passive clamps.…”

Section: Introductionmentioning

confidence: 99%

A high step‐up DC–DC converter with active switched LC‐network and voltage‐lift circuit: Topology, operating principle, and implementation

Dastgiri

Hosseinpour

Sedaghati

et al. 2021

Circuit Theory & Apps

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To meet the higher DC link voltage requirement in distributed energy resources (DERs) such as fuel cells (FCs), wind turbines (WTs), and photovoltaic (PV) systems, DC–DC converters are applied. A voltage‐lift (VL) circuit‐based transformer‐less active switched LC‐network (ASLC) converter with a high‐voltage gain is proposed in this paper. Compared to a similar reference converter, the voltage gain of the proposed converter increases efficiently by adding one extra capacitor and diode. The operation of the converter in continuous current mode (CCM) and discontinuous current mode (DCM), the analysis of the steady‐state condition, and comparative analysis with some similar converters are discussed. Moreover, the parasitic elements are assumed to calculate the DC‐voltage gain and the efficiency of the converter accurately. The performance of the proposed step‐up converter is simulated in the PSIM software. A prototype circuit rating of about 20/280 V, 200 W of converter model is designed, and its performance is validated. The experimental outcomes clarify the feasibility of the proposed converter.

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“…Initially, SC and SL cells were applied separately, but recently, both are being integrated together to reach a higher gain, since both techniques provide high gain in dc-dc converters using voltage and current multipliers, without compromising the voltage stress under its components. 26,27 In de Andrade et al, 28 a new methodology is proposed to derivate high-gain dc-dc converters through the differential connection of basic and modified converters. Additionally, some new topologies are approached briefly in Andrade et al, 28 as the converter detailed in de Andrade et al, 27 derived by the differential connection between two boost converters and gain cells (switched capacitor and switched inductor).…”

Section: Introductionmentioning

confidence: 99%

“…26,27 In de Andrade et al, 28 a new methodology is proposed to derivate high-gain dc-dc converters through the differential connection of basic and modified converters. Additionally, some new topologies are approached briefly in Andrade et al, 28 as the converter detailed in de Andrade et al, 27 derived by the differential connection between two boost converters and gain cells (switched capacitor and switched inductor). Another of the converters addressed in de Andrade et al 28 is derived from the differential connection between the conventional boost and the mirrored SEPIC converters using SC cell, named as BS-SC converter.…”

Section: Introductionmentioning

confidence: 99%

High step‐up dc‐dc converter based on the differential connection of basic converters and switched‐capacitor cells

Andrade

Coelho

Lazzarin

2021

Circuit Theory & Apps

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This paper proposes a differential connection between the conventional boost and the mirrored SEPIC converters and the combination of them using switched-capacitor cells. The integration results in a single stage power structure that provides high-voltage gain and high efficiency. The article approaches a detailed static-dynamic analysis and a comparison in relation to other structures presented in the literature. In addition, to corroborate the theoretical analysis and the operation stages of the proposed converter, a 200 W prototype, with a switching frequency at 50 kHz, an output voltage from 300 to 400 V and an input voltage of 20 V, is evaluated. An efficiency peak of 96.78% was reached at 100 W.

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High step‐up dc–dc converter based on modified active switched‐inductor and switched‐capacitor cells

Cited by 29 publications

References 31 publications

Voltage Lift Switched Inductor Double Leg Converter With Extended Duty Ratio for DC Microgrid Application

Voltage Lift Switched Inductor Double Leg Converter With Extended Duty Ratio for DC Microgrid Application

A high step‐up DC–DC converter with active switched LC‐network and voltage‐lift circuit: Topology, operating principle, and implementation

High step‐up dc‐dc converter based on the differential connection of basic converters and switched‐capacitor cells

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