Transformerless High Gain Boost and Buck-Boost DC-DC Converters Based on Extendable Switched Capacitor (SC) Cell for Stand-Alone Photovoltaic System

Asim Amir; Hang Seng Che; Aamir Amir; Ahmad El Khateb; Nasrudin Abd Rahim

doi:10.1016/j.solener.2018.06.078

Transformerless High Gain Boost and Buck-Boost DC-DC Converters Based on Extendable Switched Capacitor (SC) Cell for Stand-Alone Photovoltaic System

Asim Amir, Hang Seng Che, Aamir Amir, Ahmad El Khateb, Nasrudin Abd Rahim^*

^*Corresponding author for this work

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

31 Citations (Scopus)

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Abstract

This paper presents transformerless high gain boost and buck-boost DC-DC converters (B-BBCs) with extendable switched capacitor cells (SCs), suitable for applications operating at high voltage, above 300 V. Boosting low voltage to a high-enough level, with low duty ratio, is beyond the practical capability of the conventional boost converter. In addition, high duty ratio needed for operation of the boost converter, results in higher component stress that suppresses the overall efficiency of the converter. Therefore, by a convenient integration of SCs with conventional B-BBCs, increased voltage gain is attained with fewer losses. Such converters can be employed for Photovoltaic (PV) systems. The operational principles and modes of operation are analyzed to justify the utility of converters for stand-alone PV systems. Moreover, the proposed modular structure allows to increase SC cells in order to obtain reduced voltage stress on switching components with a higher voltage gain. Simulation and experimental results based on 100 W laboratory prototype extol the theoretical analysis.

Original language	English
Pages (from-to)	212-222
Number of pages	11
Journal	Solar Energy
Volume	171
Early online date	27 Jun 2018
DOIs	https://doi.org/10.1016/j.solener.2018.06.078 https://doi.org/10.1016/j.solener.2018.06.078
Publication status	Published - 01 Sep 2018

Keywords

Extendable switched capacitor (SC) cells
High voltage gain
Lower voltage stress
Wide input voltage variation

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solener.2018.06.078Licence: Unspecified
10.1016/j.solener.2018.06.078

Transformerless High Gain Boost and Buck-Boost DC-DC Converters Based on Extendable Switched Capacitor (SC) Cell for Stand-Alone Photovoltaic System
Copyright 2018 Elsevier. This manuscript is distributed under a Creative Commons Attribution-NonCommercial-NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited.
Accepted author manuscript, 3.01 MBLicence: Unspecified

http://adsabs.harvard.edu/abs/2018SoEn..171..212A

Cite this

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title = "Transformerless High Gain Boost and Buck-Boost DC-DC Converters Based on Extendable Switched Capacitor (SC) Cell for Stand-Alone Photovoltaic System",

abstract = "This paper presents transformerless high gain boost and buck-boost DC-DC converters (B-BBCs) with extendable switched capacitor cells (SCs), suitable for applications operating at high voltage, above 300 V. Boosting low voltage to a high-enough level, with low duty ratio, is beyond the practical capability of the conventional boost converter. In addition, high duty ratio needed for operation of the boost converter, results in higher component stress that suppresses the overall efficiency of the converter. Therefore, by a convenient integration of SCs with conventional B-BBCs, increased voltage gain is attained with fewer losses. Such converters can be employed for Photovoltaic (PV) systems. The operational principles and modes of operation are analyzed to justify the utility of converters for stand-alone PV systems. Moreover, the proposed modular structure allows to increase SC cells in order to obtain reduced voltage stress on switching components with a higher voltage gain. Simulation and experimental results based on 100 W laboratory prototype extol the theoretical analysis.",

keywords = "Extendable switched capacitor (SC) cells, High voltage gain, Lower voltage stress, Wide input voltage variation",

author = "Asim Amir and Che, {Hang Seng} and Aamir Amir and {El Khateb}, Ahmad and Rahim, {Nasrudin Abd}",

year = "2018",

month = sep,

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doi = "10.1016/j.solener.2018.06.078",

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journal = "Solar Energy",

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AU - Amir, Asim

AU - Che, Hang Seng

AU - Amir, Aamir

AU - El Khateb, Ahmad

AU - Rahim, Nasrudin Abd

PY - 2018/9/1

Y1 - 2018/9/1

N2 - This paper presents transformerless high gain boost and buck-boost DC-DC converters (B-BBCs) with extendable switched capacitor cells (SCs), suitable for applications operating at high voltage, above 300 V. Boosting low voltage to a high-enough level, with low duty ratio, is beyond the practical capability of the conventional boost converter. In addition, high duty ratio needed for operation of the boost converter, results in higher component stress that suppresses the overall efficiency of the converter. Therefore, by a convenient integration of SCs with conventional B-BBCs, increased voltage gain is attained with fewer losses. Such converters can be employed for Photovoltaic (PV) systems. The operational principles and modes of operation are analyzed to justify the utility of converters for stand-alone PV systems. Moreover, the proposed modular structure allows to increase SC cells in order to obtain reduced voltage stress on switching components with a higher voltage gain. Simulation and experimental results based on 100 W laboratory prototype extol the theoretical analysis.

AB - This paper presents transformerless high gain boost and buck-boost DC-DC converters (B-BBCs) with extendable switched capacitor cells (SCs), suitable for applications operating at high voltage, above 300 V. Boosting low voltage to a high-enough level, with low duty ratio, is beyond the practical capability of the conventional boost converter. In addition, high duty ratio needed for operation of the boost converter, results in higher component stress that suppresses the overall efficiency of the converter. Therefore, by a convenient integration of SCs with conventional B-BBCs, increased voltage gain is attained with fewer losses. Such converters can be employed for Photovoltaic (PV) systems. The operational principles and modes of operation are analyzed to justify the utility of converters for stand-alone PV systems. Moreover, the proposed modular structure allows to increase SC cells in order to obtain reduced voltage stress on switching components with a higher voltage gain. Simulation and experimental results based on 100 W laboratory prototype extol the theoretical analysis.

KW - Extendable switched capacitor (SC) cells

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KW - Lower voltage stress

KW - Wide input voltage variation

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Transformerless High Gain Boost and Buck-Boost DC-DC Converters Based on Extendable Switched Capacitor (SC) Cell for Stand-Alone Photovoltaic System

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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Ahmad Elkhateb

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Transformerless High Gain Boost and Buck-Boost DC-DC Converters Based on Extendable Switched Capacitor (SC) Cell for Stand-Alone Photovoltaic System

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Keywords

ASJC Scopus subject areas

UN SDGs

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Ahmad Elkhateb

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