A novel high step-up DC-DC converter with coupled inductor and switched clamp capacitor techniques for photovoltaic systems

Yong Seng Wong; Jiann Fuh Chen; Kuo Bin Liu; Yi Ping Hsieh

doi:10.3390/en10030378

A novel high step-up DC-DC converter with coupled inductor and switched clamp capacitor techniques for photovoltaic systems

Yong Seng Wong, Jiann Fuh Chen, Kuo Bin Liu, Yi Ping Hsieh

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

In this study, a novel high step-up DC-DC converter was successfully integrated using coupled inductor and switched capacitor techniques. High step-up DC-DC gain was achieved using a coupled inductor when capacitors charged and discharged energy, respectively. In addition, energy was recovered from the leakage inductance of the coupled inductor by using a passive clamp circuit. Therefore, the voltage stress of the main power switch was almost reduced to 1/7 V_o (output voltage). Moreover, the coupled inductor alleviated the reverse-recovery problem of the diode. The proposed circuit efficiency can be further improved and high voltage gain can be achieved. The operation principle and steady-state analysis of the proposed converter were discussed. Finally, a hardware prototype circuit with input voltage of 24 V, output voltage of up to 400 V, and maximum power of 150W was constructed in a laboratory; the maximum efficiency was almost 96.2%.

Original language	English
Article number	378
Journal	Energies
Volume	10
Issue number	3
DOIs	https://doi.org/10.3390/en10030378
Publication status	Published - 2017

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Energy (miscellaneous)
Control and Optimization
Electrical and Electronic Engineering

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@article{b44a369451e541aeb1c7cae55b4686ec,

title = "A novel high step-up DC-DC converter with coupled inductor and switched clamp capacitor techniques for photovoltaic systems",

abstract = "In this study, a novel high step-up DC-DC converter was successfully integrated using coupled inductor and switched capacitor techniques. High step-up DC-DC gain was achieved using a coupled inductor when capacitors charged and discharged energy, respectively. In addition, energy was recovered from the leakage inductance of the coupled inductor by using a passive clamp circuit. Therefore, the voltage stress of the main power switch was almost reduced to 1/7 Vo (output voltage). Moreover, the coupled inductor alleviated the reverse-recovery problem of the diode. The proposed circuit efficiency can be further improved and high voltage gain can be achieved. The operation principle and steady-state analysis of the proposed converter were discussed. Finally, a hardware prototype circuit with input voltage of 24 V, output voltage of up to 400 V, and maximum power of 150W was constructed in a laboratory; the maximum efficiency was almost 96.2%.",

author = "Wong, {Yong Seng} and Chen, {Jiann Fuh} and Liu, {Kuo Bin} and Hsieh, {Yi Ping}",

note = "Funding Information: This work were supported in part by the National Synchrotron Radiation Research Center and Ministry of Science and Technology, China, through grant numbers MOST 105-2199-M-006-004 and MOST 104-2221-E-006-073-MY3. Funding Information: Acknowledgments: This work were supported in part by the National Synchrotron Radiation Research Center and Ministry of Science and Technology, China, through grant numbers MOST 105-2199-M-006-004 and MOST 104-2221-E-006-073-MY3. Publisher Copyright: {\textcopyright} 2017 by the authors.",

year = "2017",

doi = "10.3390/en10030378",

language = "English",

volume = "10",

journal = "Energies",

issn = "1996-1073",

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AU - Wong, Yong Seng

AU - Chen, Jiann Fuh

AU - Liu, Kuo Bin

AU - Hsieh, Yi Ping

N1 - Funding Information: This work were supported in part by the National Synchrotron Radiation Research Center and Ministry of Science and Technology, China, through grant numbers MOST 105-2199-M-006-004 and MOST 104-2221-E-006-073-MY3. Funding Information: Acknowledgments: This work were supported in part by the National Synchrotron Radiation Research Center and Ministry of Science and Technology, China, through grant numbers MOST 105-2199-M-006-004 and MOST 104-2221-E-006-073-MY3. Publisher Copyright: © 2017 by the authors.

PY - 2017

Y1 - 2017

N2 - In this study, a novel high step-up DC-DC converter was successfully integrated using coupled inductor and switched capacitor techniques. High step-up DC-DC gain was achieved using a coupled inductor when capacitors charged and discharged energy, respectively. In addition, energy was recovered from the leakage inductance of the coupled inductor by using a passive clamp circuit. Therefore, the voltage stress of the main power switch was almost reduced to 1/7 Vo (output voltage). Moreover, the coupled inductor alleviated the reverse-recovery problem of the diode. The proposed circuit efficiency can be further improved and high voltage gain can be achieved. The operation principle and steady-state analysis of the proposed converter were discussed. Finally, a hardware prototype circuit with input voltage of 24 V, output voltage of up to 400 V, and maximum power of 150W was constructed in a laboratory; the maximum efficiency was almost 96.2%.

AB - In this study, a novel high step-up DC-DC converter was successfully integrated using coupled inductor and switched capacitor techniques. High step-up DC-DC gain was achieved using a coupled inductor when capacitors charged and discharged energy, respectively. In addition, energy was recovered from the leakage inductance of the coupled inductor by using a passive clamp circuit. Therefore, the voltage stress of the main power switch was almost reduced to 1/7 Vo (output voltage). Moreover, the coupled inductor alleviated the reverse-recovery problem of the diode. The proposed circuit efficiency can be further improved and high voltage gain can be achieved. The operation principle and steady-state analysis of the proposed converter were discussed. Finally, a hardware prototype circuit with input voltage of 24 V, output voltage of up to 400 V, and maximum power of 150W was constructed in a laboratory; the maximum efficiency was almost 96.2%.

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A novel high step-up DC-DC converter with coupled inductor and switched clamp capacitor techniques for photovoltaic systems

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