High step-up voltage gain integrated DC/DC converters

Dreher, Jacson Rodrigo; Marangoni, Filipe; Ortiz, Jorge Luis Roel; Martins, Mário; Camara, H.T.; Flora, Leandro Della

doi:10.1109/pedg.2012.6253990

Cited by 9 publications

(4 citation statements)

References 25 publications

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“…According to equations from (8) to (11), the average inductor current in CCM mode can be presented as following:…”

Section: B Boundary Condition Analysismentioning

confidence: 99%

“…Article [10] used second winding of transformer as input of a voltage multiplier and connected its output in series with the first winding loop to build a higher output voltage. Article [11] combined tappedinductor with diode-capacitor unit to achieve high voltage gain with good efficiency. Some success was reported to remedy the leakage issue in the tap inductor converters by suitable snubbers, but it is at the cost of more passive or active components [12].…”

Section: Introductionmentioning

confidence: 99%

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A new hybrid boosting converter

Smedley

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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A new Hybrid Boosting Converter(HBC) is proposed in this paper. It combines the advantages of regulation capability of traditional inductor based DC-DC converters and gain boosting ability of switched capacitor converters. It is capable of boosting the input voltage to ten times with single active switch and one inductor while maintaining high efficiency. In addition, the switch stress is low and output voltage has a wide regulation range. A modeling method for the proposed converter is presented in this paper. The PWM regulation capability is confirmed by theory and experiment. A 200W, 35V to 380V HBC prototype was built that demonstrated a peak efficiency of 95.44% using normal electrolytic capacitors.

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“…According to equations from (8) to (11), the average inductor current in CCM mode can be presented as following:…”

Section: B Boundary Condition Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new hybrid boosting converter

Smedley

2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…However, these methods require a larger number of components, making the design more complex. Different methods of multi-stage voltage multiplying can also be performed on the traditional topology [22,23], such as using multi-switch converters [24] or a quadric converter based on the z-source impedance network [25]. However, these methods involve many parameters and can lead to hard switching phenomena.…”

Section: Introductionmentioning

confidence: 99%

An integrated switched capacitor coupled inductor Buck-Boost DC-DC converter

He,

Chen,

Sun

2024

IEICE Electron. Express

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This paper focuses on the Buck-Boost converter and presents a new approach to improve its efficiency and voltage transformation capability. The approach involves introducing a coupled inductor structure and restructuring the quadric front-end unit to ensure continuous input inductor current. The converter also uses a diode-capacitor (D-C) doublebranch structure of switched capacitors to expand the output range and reduce voltage stress on each device. In addition, the converter utilizes the leakage inductance energy to suppress the current surge in the switched capacitor, achieving soft switching. The paper provides a detailed theoretical analysis and compares various indicators horizontally in different converters. Moreover, an experimental prototype of 200W was built to verify the design expectations and theoretical analysis through experiments.

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“…On the other hand, a single-stage converter with integrated transformer faces similar drawbacks since the high step-up functionality is gained via magnetics that are costly and less efficient than transformerless solutions [8], [9]. However, the deployment of a standard boost-converter is in itself problematic due to the reduced voltage gain and efficiency in this converter when operated with large step-up ratios [10]. Thus, it is of interest to develop a high step-up dc/dc converter which does not require a transformer and can operate with high efficiencies under a wide operating range.…”

Section: Introductionmentioning

confidence: 99%

A high step-up transformerless DC/DC converter with flat efficiency

Ranjram

Simeonov

Lehn

2014

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society

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This paper proposes a high step-up, transformerless, dc/dc converter suitable for applications where high efficiency at low power throughput is required. The proposed converter achieves high step-up dc/dc conversion through a resonant LC tank and realizes high-efficiency operation via the softswitching enabled by this resonant network. Flat efficiency is obtained via discontinuous conduction mode (DCM) operation of the converter. A burst operating mode is proposed for achieving increased efficiency operation. Finally, a 100V/800V, 650W prototype is implemented to experimentally validate the converter's operation, and flat efficiencies are measured over a wide operating range.

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High step-up voltage gain integrated DC/DC converters

Cited by 9 publications

References 25 publications

A new hybrid boosting converter

A new hybrid boosting converter

An integrated switched capacitor coupled inductor Buck-Boost DC-DC converter

A high step-up transformerless DC/DC converter with flat efficiency

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