A High Step Up SEPIC-Based Converter Based on Partly Interleaved Transformer

Gao, Shanshan; Wang, Yijie; Guan, Yueshi; Xu, Dianguo

doi:10.1109/tie.2019.2910044

Cited by 35 publications

(30 citation statements)

References 38 publications

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“…High input current ripple is the most important problem in the majority of these converters. Cascaded converters and SEPIC‐based (Search ResultsWeb resultsSingle‐ended primary‐inductor converter) DC–DC converters are proposed to solve the problem in recent years. The input inductor reduces the input current ripple.…”

Section: Introductionmentioning

confidence: 99%

“…The features of this converter which can be improved are its voltage gain and efficiency. In Reference , a high step‐up SEPIC‐based converter is presented. This converter used the structure of the converter proposed in Reference .…”

Section: Introductionmentioning

confidence: 99%

“…A new structure based on SEPIC converter is presented in Reference . The number of components and also the voltage gain of this converter is higher than the converters proposed in References . A new structure of voltage multiplier is used in this converter in which the secondary and primary sides of the coupled inductor become in series and increase the voltage gain of the voltage multiplier to n + 1.…”

Section: Introductionmentioning

confidence: 99%

“…Another SEPIC‐based converter with high voltage gain is presented in Reference . The voltage gain of this converter is higher than and lower than. However, its number of components is equal to the converter proposed in Reference and less than …”

Section: Introductionmentioning

confidence: 99%

“…These are also discussed in Reference . In order to decrease the input current ripple, two methods have been presented: (a) cascading with a boost converter in the input and (b) using SEPIC converter instead of boost converter . However, using cascaded method decreases the efficiency.…”

Section: Introductionmentioning

confidence: 99%

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A DC–DC boost converter with high voltage gain integrating three‐winding coupled inductor with low input current ripple

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Summary In this paper, a new DC–DC converter with high voltage gain is proposed. One inductor, three capacitors, a three‐winding coupled inductor, three diodes and one power switch is employed in the presented structure. Because of connecting inductor, the input current of the presented converter is continuous with low ripple. The stored energy in the leakage inductor is recycled by a passive voltage clamp. The voltage clamp also reduces the voltage stress on the main power switch. Since the voltage stress of the switch is low, a switch with low on‐resistance (RDS(ON)) can be used in the proposed converter which reduces the conduction loss. High efficiency, low voltage stress, low input current ripple, low voltage stress on the power switch and zero current switching of the switch are the advantages of the proposed converter. The proposed converter is analyzed in steady state condition and the experimental results are presented to justify the feasibility of the proposed topology.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A DC–DC boost converter with high voltage gain integrating three‐winding coupled inductor with low input current ripple

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Operation and design analysis of an interleaved high step‐up DC–DC converter with improved harnessing of magnetic energy

Sabahi

Tarzamni

Kolahian

2021

Circuit Theory & Apps

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In this paper, a new interleaved DC-DC converter based on a coupled and a single input inductor is proposed. The suggested high step-up converter utilizes various inductive and capacitive methods to transfer magnetic energy more efficiently. The output voltage is regulated with the switches' duty cycle and the coupled inductor (CI) turns ratio, which provide a wide output voltage range. Interleaving improves the converter reliability, employs both the first and third areas of CI's B-H plane, cancels DC component of the CI, and reduces the input current ripple of the proposed converter with twice switching frequency. Utilization of two output ports for voltage stress and ripple reduction in each port, recycling the stored energy of inductances in both forward and flyback mechanisms, alleviation of switch voltage spikes, operation without circulating current, high power density, independency of switch voltage stress to the CI turns ratio, and continuous input current can be mentioned as other features. In this paper, continuous and discontinuous conduction modes' steady-state analytics, power loss calculations, and design procedure of the proposed converter are followed with comprehensive comparisons to evaluate the capabilities. Eventually, experimental results are presented to validate theoretical calculations.

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High step‐up buck–boost DC–DC converter with coupled inductor and low component count for distributed PV generation systems

Toebe

Faistel

Andrade

2022

Circuit Theory & Apps

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This paper presents a non‐isolated high step‐up buck–boost with a coupled inductor DC–DC converter relevant for distributed photovoltaic (PV) generation systems. The proposed topology can reach high voltage gain through the combination of a buck–boost converter with a coupled inductor. The configuration of the proposed converter allows to achieve a natural voltage clamp circuit for the switch, recovering the energy stored in the leakage inductance of the coupled inductor. Moreover, the converter allows soft‐switching conditions, that is, Zero Current Switching (ZCS) for the diodes and nearly ZCS for the active switch. Also, the proposed converter presents a low component count and common ground connection of the input and output. The proposed converter is evaluated theoretically by the principle of operation in continuous‐conduction mode (CCM) and discontinuous‐conduction mode (DCM), voltage gain derivation, external characteristics, semiconductor voltage stress, current stress, and design guidelines. Finally, a 650‐W, 36/380‐V, 50‐kHz prototype was built in the laboratory to experimentally evaluate the proposed converter, which reached a maximum efficiency rate of 96.58%.

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A High Step Up SEPIC-Based Converter Based on Partly Interleaved Transformer

Cited by 35 publications

References 38 publications

A DC–DC boost converter with high voltage gain integrating three‐winding coupled inductor with low input current ripple

A DC–DC boost converter with high voltage gain integrating three‐winding coupled inductor with low input current ripple

Operation and design analysis of an interleaved high step‐up DC–DC converter with improved harnessing of magnetic energy

High step‐up buck–boost DC–DC converter with coupled inductor and low component count for distributed PV generation systems

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