Family of Transformerless Active Switched Inductor and Switched Capacitor Ćuk DC–DC Converter for High Voltage Gain Applications

Andrade, António Manuel Santos Spencer; Faistel, Tiago Miguel Klein; Toebe, Ademir; Guisso, Ronaldo António

doi:10.1109/jestie.2021.3091419

Cited by 31 publications

(15 citation statements)

References 29 publications

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“…The performance of the proposed converter is compared with other high step-up Cuk converters proposed in [27][28][29] and other high step-up coupled inductor interleaved converters proposed in [24][25][26]. The parameter comparison of the converter is shown in Table 1.…”

Section: Converter Performance Comparisonmentioning

confidence: 99%

“…Cuk converter has the characteristics of continuous input current and output current, but its voltage gain is very low. In order to improve the voltage gain of the Cuk converter, the converter proposed in [27] integrates the switched‐inductor and the switched‐capacitor into the Cuk converter, which greatly improves the voltage gain. A high‐gain boost‐Cuk converter is proposed in [28], which is obtained by integrating the quadratic boost converter and the Cuk converter, but its output current is not continuous.…”

Section: Introductionmentioning

confidence: 99%

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A high step‐up interleaved boost‐Cuk converter with integrated magnetic coupled inductors

Desheng

Sun

Wang

2021

IET Renewable Power Gen

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This paper proposes a high step-up interleaved boost-Cuk converter with integrated magnetic coupled inductor that is suitable for photovoltaic systems. By connecting the boost converter and the Cuk converter in parallel at the input terminal and the output terminal in series and integrating a coupled inductor voltage multiplier cell, the proposed converter achieves a higher voltage gain while retaining the continuous input and output current characteristics of the Cuk converter. The passive clamping branch is used to absorb the leakage inductance energy, which effectively suppresses the voltage spike generated by the switch parasitic capacitance and leakage inductance resonance and reduces the maximum voltage stress of the switch. The operation principle of the converter is analysed and the magnetic integration equivalent model and design criteria of the two coupled inductors are given. An array magnetic integrated structure is designed, which effectively reduces the DC bias inside the magnetic core. Finally, a 380 W experimental prototype is built to verify the theoretical analysis.

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Section: Converter Performance Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A high step‐up interleaved boost‐Cuk converter with integrated magnetic coupled inductors

Desheng

Sun

Wang

2021

IET Renewable Power Gen

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“…The converter proposed in this paper has a common ground and continuous input current. In [20], a modified Ćuk converter is proposed with switched capacitors. The authors have proposed a buck-boost converter in [21] for renewable energy applications with continuous input.…”

Section: Introductionmentioning

confidence: 99%

A Nonisolated Transformerless High-Gain DC–DC Converter for Renewable Energy Applications

et al. 2022

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Dc–dc converters with a high gain, continuous input current, and common ground are usually employed in renewable energy applications to boost the generated output voltage of renewable energy sources. In this paper, a high-gain dc–dc converter comprising a voltage multiplier cell (VMC) and a common ground with continuous input current and low-voltage stress across semiconductor devices is proposed. The converter produces a voltage gain of about ten times compared to the conventional boost converter at a duty ratio of 50% by utilizing switched capacitors and switched inductors. The simultaneous operation of both the switches with the same gate pulse offers easy and simple control of the proposed converter with a wide range of operations. The boundary operation of the converter is analyzed and presented in both modes, i.e., continuous conduction mode (CCM) and discontinuous conduction mode (DCM). Ideal and nonideal analysis of the converter is carried out by integrating real models of passive elements and semiconductor devices by using PLECS software. The simulation is also used to calculate the losses and hence the working efficiency of the converter. The performance of the converter analyzed in the steady state is compared with various similar converters based on the voltage boosting capability and switching stresses. A hardware prototype is also developed to confirm and validate the theoretical analysis and simulation of the proposed converter.

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“…So to extract the maximum power from the PV, a maximum power point tracking (MPPT) algorithm is necessary. Besides that, the voltage level provided by a single PV panel is usually lower than 50 V. So, to provide energy to a DC microgrid or AC inverter connected to the grid, a high step-up stage is needed [1][2][3][4][5][6][7][8][9][10]. is type of configuration allows improving energy efficiency in partially shaded conditions since only one solar panel is used [11].…”

Section: Introductionmentioning

confidence: 99%

Stacked Input-Output High Step-Up Buck-Boost DC-DC Converter with Coupled Inductor and Voltage Multiplier

Faistel

Toebe

Andrade

et al. 2022

International Transactions on Electrical Energy Systems

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This paper presents three high voltage gain DC-DC converters based on stacked input and output connection of nonisolated buck-boost converters with coupled inductor and voltage multiplier cells. Besides that, an empirical approach for the coupled inductor winding is proposed to show how to reduce the leakage inductance. In this way, the proposed converter achieves high voltage gain, low voltage, and current stress across the components without using an auxiliary clamp circuit, and they present a low component count. Besides that, this paper presents the evaluation of MPPT, modeling, and control of the converters. To validate the theoretical evaluations, three prototypes were built and evaluated experimentally, considering input power of 200 W, input voltage of 37.4 V, output voltage of 400 V, and switching frequency of 50 kHz. Finally, it should be noted that the maximum efficiency achieved is 97.53% at nominal input power.

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Family of Transformerless Active Switched Inductor and Switched Capacitor Ćuk DC–DC Converter for High Voltage Gain Applications

Cited by 31 publications

References 29 publications

A high step‐up interleaved boost‐Cuk converter with integrated magnetic coupled inductors

A high step‐up interleaved boost‐Cuk converter with integrated magnetic coupled inductors

A Nonisolated Transformerless High-Gain DC–DC Converter for Renewable Energy Applications

Stacked Input-Output High Step-Up Buck-Boost DC-DC Converter with Coupled Inductor and Voltage Multiplier

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