Performances of an Interleaved High Step-Up Converter with Different Soft-Switching Snubbers for PV Energy Conversion Applications

This paper proposes an interleaved high step-up converter with different soft-switching snubbers for PV energy conversion applications. For the high step-up converter, interleaved and coupled-inductor technologies are used to reduce output ripple current and increase output power level. Simultaneous...

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Bibliographic Details
Published inInternational Journal of Photoenergy Vol. 2013; no. 2013; pp. 1 - 15
Main Authors Tseng, Sheng-Yu, Wang, Hung-Yuan, Hsu, Chih-Yang
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Puplishing Corporation 01.01.2013
Hindawi Publishing Corporation
John Wiley & Sons, Inc
Hindawi Limited
Subjects
Algorithms
Batteries
Conversion
Converters
Direct power generation
Efficiency
Electric current converters
Energy conversion
Equipment and supplies
Joining
Load
Maximum power
Motor vehicle fleets
Photovoltaic power generation
Properties
Ripples
Snubbers
Solar energy
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Summary:This paper proposes an interleaved high step-up converter with different soft-switching snubbers for PV energy conversion applications. For the high step-up converter, interleaved and coupled-inductor technologies are used to reduce output ripple current and increase output power level. Simultaneously, two types of snubbers, a single-capacitor snubber and boost type snubber, are introduced separately into the discussed converters for comparing their performances of conversion efficiency and switching losses. For drawing maximum power from the PV arrays, a perturbation-and-observation method realized with the microcontroller is adopted to achieve maximum power point tracking (MPPT) algorithm and power regulating scheme. Finally, two prototypes of the interleaved coupled-inductor boost converter with a single-capacitor snubber and with boost type snubber are implemented, respectively. The experimental results obtained are used to verify and compare the performances and feasibilities of the discussed converters with different snubbers in PV conversion applications. The experimental results show that the proposed system is suitable for PV energy conversion applications when the duty ratios of switches of the converter are less than 0.5.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1110-662X
1687-529X
DOI:10.1155/2013/834510