Medium voltage AC collection grid for large scale photovoltaic plants based on medium frequency transformers

Bahaa Hafez; Harish S. Krishnamoorthy; Prasad Enjeti; Uffe Borup; Shehab Ahmed

doi:10.1109/ECCE.2014.6954128

Medium voltage AC collection grid for large scale photovoltaic plants based on medium frequency transformers

Bahaa Hafez, Harish S. Krishnamoorthy, Prasad Enjeti, Uffe Borup, Shehab Ahmed

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

15 Scopus citations

Abstract

A three phase medium voltage (MV) / medium frequency (MF) power collection grid for megawatt (MW) scale photovoltaic plant (PV) is proposed. The proposed ac collection grid is shown to increase power density and improves system modularity while maintaining high efficiency levels. The PV panels power standard three phase PWM voltage source inverters (VSI) to generate MF ac voltage. Various VSI outputs are combined in series via MF transformers to form the proposed MF ac collection grid. A three phase ac-ac cycloconverter interfaces the MF grid with the 60Hz mains. An 80MW PV power plant located in Eggebek/Germany is used for comparison in the design example. Detailed simulation and calculations of the proposed system demonstrates size/weight reduction and overall efficiency improvement of 2%.

Original language	English (US)
Title of host publication	2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	9781479956982
DOIs	https://doi.org/10.1109/ECCE.2014.6954128
State	Published - Jan 1 2014
Externally published	Yes

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Generated from Scopus record by KAUST IRTS on 2019-11-27

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10.1109/ECCE.2014.6954128

Cite this

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title = "Medium voltage AC collection grid for large scale photovoltaic plants based on medium frequency transformers",

abstract = "A three phase medium voltage (MV) / medium frequency (MF) power collection grid for megawatt (MW) scale photovoltaic plant (PV) is proposed. The proposed ac collection grid is shown to increase power density and improves system modularity while maintaining high efficiency levels. The PV panels power standard three phase PWM voltage source inverters (VSI) to generate MF ac voltage. Various VSI outputs are combined in series via MF transformers to form the proposed MF ac collection grid. A three phase ac-ac cycloconverter interfaces the MF grid with the 60Hz mains. An 80MW PV power plant located in Eggebek/Germany is used for comparison in the design example. Detailed simulation and calculations of the proposed system demonstrates size/weight reduction and overall efficiency improvement of 2%.",

author = "Bahaa Hafez and Krishnamoorthy, {Harish S.} and Prasad Enjeti and Uffe Borup and Shehab Ahmed",

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doi = "10.1109/ECCE.2014.6954128",

language = "English (US)",

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Medium voltage AC collection grid for large scale photovoltaic plants based on medium frequency transformers. / Hafez, Bahaa; Krishnamoorthy, Harish S.; Enjeti, Prasad et al.
2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014. Institute of Electrical and Electronics Engineers Inc., 2014.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Medium voltage AC collection grid for large scale photovoltaic plants based on medium frequency transformers

AU - Hafez, Bahaa

AU - Krishnamoorthy, Harish S.

AU - Enjeti, Prasad

AU - Borup, Uffe

AU - Ahmed, Shehab

N1 - Generated from Scopus record by KAUST IRTS on 2019-11-27

PY - 2014/1/1

Y1 - 2014/1/1

N2 - A three phase medium voltage (MV) / medium frequency (MF) power collection grid for megawatt (MW) scale photovoltaic plant (PV) is proposed. The proposed ac collection grid is shown to increase power density and improves system modularity while maintaining high efficiency levels. The PV panels power standard three phase PWM voltage source inverters (VSI) to generate MF ac voltage. Various VSI outputs are combined in series via MF transformers to form the proposed MF ac collection grid. A three phase ac-ac cycloconverter interfaces the MF grid with the 60Hz mains. An 80MW PV power plant located in Eggebek/Germany is used for comparison in the design example. Detailed simulation and calculations of the proposed system demonstrates size/weight reduction and overall efficiency improvement of 2%.

AB - A three phase medium voltage (MV) / medium frequency (MF) power collection grid for megawatt (MW) scale photovoltaic plant (PV) is proposed. The proposed ac collection grid is shown to increase power density and improves system modularity while maintaining high efficiency levels. The PV panels power standard three phase PWM voltage source inverters (VSI) to generate MF ac voltage. Various VSI outputs are combined in series via MF transformers to form the proposed MF ac collection grid. A three phase ac-ac cycloconverter interfaces the MF grid with the 60Hz mains. An 80MW PV power plant located in Eggebek/Germany is used for comparison in the design example. Detailed simulation and calculations of the proposed system demonstrates size/weight reduction and overall efficiency improvement of 2%.

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U2 - 10.1109/ECCE.2014.6954128

DO - 10.1109/ECCE.2014.6954128

M3 - Conference contribution

SN - 9781479956982

BT - 2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014

PB - Institute of Electrical and Electronics Engineers Inc.

ER -

Medium voltage AC collection grid for large scale photovoltaic plants based on medium frequency transformers

Abstract

Bibliographical note

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