A Novel High-Step-Up Coupled-Inductor DC–DC Converter With Reduced Power Device Voltage Stress

Liu, Hongchen; Wang, Junxiong; Ji, Yuliang

doi:10.1109/jestpe.2018.2868769

Cited by 15 publications

(14 citation statements)

References 19 publications

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“…It can be seen the efficiency is improved when increasing input voltage. Compared with the transformer or coupled-inductor based converters proposed in [27], [28], [29], the proposed converter can achieve higher efficiency with the same voltage gain.…”

Section: Experiments Resultsmentioning

confidence: 99%

Switched-Capacitor High Voltage Gain Z-Source Converter With Common Ground and Reduced Passive Component

Zhao

Chen

2021

IEEE Access

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Conventional dc-dc Boost converter has limited boost capacity, and its power device suffers high voltage stress. A novel Z-source based dc-dc boost converter featured with high step-up capability and low device voltage stress is proposed in this paper. The proposed topology can also provide a common ground for input and output, which is lacking in the traditional Z-source topology. Compared with other high step-up topologies, the proposed converter can achieve higher voltage gain under the same duty ratio and maintain low voltage stresses on the switch and diode. Moreover, there are fewer passive components in the proposed structure than in other structures. The steady-state analysis for the continuous conduction mode and discontinuous conduction mode is also provided in this manuscript. Finally, a prototype circuit with 40V-60V input voltage, 400V output voltage and 200W output power is implemented in the laboratory. Experiment results confirm the analysis and the features of the proposed converter.

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Section: Experiments Resultsmentioning

confidence: 99%

Switched-Capacitor High Voltage Gain Z-Source Converter With Common Ground and Reduced Passive Component

Zhao

Chen

2021

IEEE Access

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“…Recently, magnetically coupled inductors impedance source networks have been presented to obtain high gain by lowering turn's ratio. Γ‐source [27], asymmetrical Γ‐source [28], and Y‐source [29] are the most successful magnetically coupled impedance source networks. However, usually absorbing circuits must be designed to clamp leakage energy and eliminate voltage spikes across the switch.…”

Section: Introductionmentioning

confidence: 99%

High step‐up single switch quadratic modified SEPIC converter for DC microgrid applications

Maroti

Esmaeili

Iqbal

et al. 2020

IET power electron.

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“…Compared with the clamped technique above, two sides of its clamped capacitor in another clamped technique are directly connected with that of the main switch at turn-on [12,[18][19][20][21]. The second type of the clamped technique is used to improve the efficiency in [12,18]. Although the main switch can operate with ZCS at turn-on, the input current is pinched off during turn-off.…”

Section: Introductionmentioning

confidence: 99%

High step‐up DC–DC converter with three capacitors clamped circuits for reduced out capacitor stress

Lin

Liu

2020

IET Power Electronics

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In this study, a novel converter which integrates three capacitor clamped circuits and coupled inductor is proposed for high voltage gain. Compared with classical clamped circuit, these clamped circuits which are composed of one diode and three capacitors are used to improve voltage gain and achieve a continuous input current in this proposed converter. The proposed converter has four different clamped circuits, which can be divided into two types, including horizontal clamped and vertical ways. Moreover, each type of new clamped circuit corresponds to two different clamped circuits. This makes the designer have more selections to recycle the energy stored in leakage inductor. Besides, one of the three capacitors is connected in series with the output capacitor to efficiently reduce the voltage stress across the output capacitor, and voltages of both of them are less than half output voltage. Finally, in these converters, a converter based on three capacitor clamped circuit as a representative is analysed in detail. A prototype circuit is established in the laboratory to demonstrate the performances of this converter.

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A Novel High-Step-Up Coupled-Inductor DC–DC Converter With Reduced Power Device Voltage Stress

Cited by 15 publications

References 19 publications

Switched-Capacitor High Voltage Gain Z-Source Converter With Common Ground and Reduced Passive Component

Switched-Capacitor High Voltage Gain Z-Source Converter With Common Ground and Reduced Passive Component

High step‐up single switch quadratic modified SEPIC converter for DC microgrid applications

High step‐up DC–DC converter with three capacitors clamped circuits for reduced out capacitor stress

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