Review of High-Frequency High-Voltage-Conversion-Ratio DC–DC Converters

Guan, Yueshi; Cecati, Carlo; Alonso, J.M.; Zhang, Zhe

doi:10.1109/jestie.2021.3051554

Cited by 81 publications

(25 citation statements)

References 96 publications

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“…In such case, due to the non-idealities inherent to the elements of the circuit, the efficiency is reduced at high conversion ratio. In this sense, numerous alternative topologies have been proposed to circumvent the conventional step-up converters' drawbacks, as discussed in the reviews presented in [3] and [4]. As it can be observed in these papers, several voltage boosting techniques are used to achieve high voltage gain, such as coupled inductor, voltage multiplier cell and switched capacitor.…”

Section: Introductionmentioning

confidence: 99%

Single-Switch High-Step-Up DC-DC Converter Employing Coupled Inductor and Voltage Multiplier Cell

2022

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This paper introduces a high-step-up dc-dc converter to provide voltage boosting in lowvoltage applications. The circuit contains only a single active switch and is based on the boost-type converter using coupled inductor and voltage multiplier cell. The proposed topology exhibits high efficiency, reduced voltage stress on the semiconductors and requires a low component count. The circuit is intended for applications with rated power in the order of a few hundreds of Watts, which corresponds to the typical level of a single photovoltaic (PV) module. A detailed mathematical description of the circuit operation is carried out, providing the means for the adequate design of the converter. The dynamic analysis is also addressed in the paper, and proper closed-loop operation is demonstrated. A 400 W prototype operating at 90 kHz, with an input voltage range of 24-48 V and output voltage of 400 V was built and tested in laboratory. Experimental results validate the analyses carried out and measurements indicate efficiency levels up to 97.5%, which ratifies the proposed converter as a good solution for typical PV applications.INDEX TERMS High voltage gain, high step-up, coupled inductor, voltage multiplier cell.

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Section: Introductionmentioning

confidence: 99%

Single-Switch High-Step-Up DC-DC Converter Employing Coupled Inductor and Voltage Multiplier Cell

2022

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“…In the recent days, the power electronics DC-DC converters [1][2][3] has gained a significant attention in many power application systems, due to their benefits of increased conversion efficiency, regulated voltage, reliability, uninterrupted power supply, and optimal cost consumption. When compared to the other DC-DC converters, the LLC resonant converter [4,5] is more popular and increasingly used in the power electronics system like renewable energy sources, battery charging systems, plug-in electric vehicles and other low power applications. Because, the LLC converter [6,7] could regulate the voltage gain based on the frequency of modulation.…”

Section: Introductionmentioning

confidence: 99%

Design of LLC resonant converter with silicon carbide MOSFET switches and nonlinear adaptive sliding controller for brushless DC motor system

Suba

Kumaresan

2022

Electrical Engineering & Electromechanics

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Introduction. The high voltage gain DC-DC converters are increasingly used in many power electronics application systems, due to their benefits of increased voltage output, reduced noise contents, uninterrupted power supply, and ensured system reliability. Most of the existing works are highly concentrated on developing the high voltage DC-DC converter and controller topologies for goal improving the steady state response of brushless DC motor driving system and also obtain the regulated voltage with increased power density and reduced harmonics, the LLC resonant DC-DC converter is implemented with the silicon carbide MOSFET switching devices Problem. Yet, it facing the major problems of increased switching loss, conduction loss, error outputs, time consumption, and reduced efficiency. Also the existing works are mainly concentrating on improving the voltage gain, regulation, and operating performance of the power system with reduced loss of factors by using the different types of converters and controlling techniques. The goal of this work is to obtain the improved voltage gain output with reduced loss factors and harmonic distortions. Method. Because, this type of converter has the ability to generate the high gain DC output voltage fed to the brushless DC motor with reduced harmonics and loss factors. Also, the nonlinear adaptive sliding controller is implemented to generate the controlling pulses for triggering the switching components properly. For this operation, the best gain parameters are selected based on the duty cycle, feedback DC voltage and current, and gain of silicon carbide MOSFET. By using this, the controlling signals are generated and given to the converter, which helps to control the brushless DC motor with steady state error. Practical value. The simulation results of the proposed LLC silicon carbide MOSFET incorporated with nonlinear adaptive sliding controller controlling scheme are validated and compared by using various evaluation indicators.

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“…In the modern grid-connected PV system, the transformerless inverter is connected to the PV source through the high gain dc-dc converter [4]. In the last decade, several techniques such as cascading [5], voltage-lift, coupled-inductor [6], [7], voltage multiplier [8], and so on have been used to develop high gain DC-DC converter topologies.…”

Section: Introductionmentioning

confidence: 99%

Single Switch Module Type DC-DC Converter With Reduction in Voltage Stress

et al. 2022

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This paper proposes a new generalized switched-inductor-capacitor module for a non-isolated dc-dc converter with low voltage dc source applications. Further, the proposed module can be extended to an n number of modules to achieve high voltage gain. The derived structure has low voltage stress on power components. This structure benefits the designer by allowing him/her to choose a low r DS (ON) switch due to the low voltage stress across the semiconductor devices, resulting in high efficiency and low cost. In most dc/dc converters, the voltage stress on the output diode will equal the output (high) voltage (V o ). But in the case of the proposed topology, the diode voltage will be the difference between V o and the input voltage (V g ), which eases the reverse recovery problem. The key metrics of the derived topology, such as component count, voltage stresses, and gain factor, are analyzed to compare with similar existing topologies. The scaled down prototype setup is developed for 200 W with an efficiency of 93%. Finally, various experimental results are discussed for the different duty cycles.

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Review of High-Frequency High-Voltage-Conversion-Ratio DC–DC Converters

Cited by 81 publications

References 96 publications

Single-Switch High-Step-Up DC-DC Converter Employing Coupled Inductor and Voltage Multiplier Cell

Single-Switch High-Step-Up DC-DC Converter Employing Coupled Inductor and Voltage Multiplier Cell

Design of LLC resonant converter with silicon carbide MOSFET switches and nonlinear adaptive sliding controller for brushless DC motor system

Single Switch Module Type DC-DC Converter With Reduction in Voltage Stress

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