Recovery of Inter-Row Shading Losses Using Differential Power-Processing Submodule DC-DC Converters

Christopher Deline; Kate Doubleday; Carlos Olalla; Beomseok Choi; Dragan Maksimovic

doi:10.1016/j.solener.2016.06.013

Recovery of Inter-Row Shading Losses Using Differential Power-Processing Submodule DC-DC Converters

Christopher Deline, Kate Doubleday, Carlos Olalla, Beomseok Choi, Dragan Maksimovic

Materials Science

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

15 Scopus Citations

Abstract

Large commercial photovoltaic (PV) systems can experience regular and predictable energy loss due to both inter-row shading and reduced diffuse irradiance in tightly spaced arrays. This paper investigates the advantages of replacing bypass diodes with submodule-integrated DC-DC converters (subMICs) to mitigate these losses. Yearly simulations of commercial-scale PV systems were conducted considering a range of row-to-row pitches. In the limit case of array spacing (unity ground coverage), subMICs can confer a 7% increase in annual energy output and peak energy density (kW h/m²). Simulation results are based on efficiency assumptions experimentally confirmed by prototype submodule differential power-processing converters.

Original language	American English
Pages (from-to)	512-517
Number of pages	6
Journal	Solar Energy
Volume	135
DOIs	https://doi.org/10.1016/j.solener.2016.06.013 https://doi.org/10.1016/j.solener.2016.06.013
State	Published - 1 Oct 2016

Bibliographical note

Publisher Copyright:
© 2016.

NREL Publication Number

NREL/JA-5J00-65132

Keywords

distributed power electronics
energy conversion
MLPE
partial shading
photovoltaic systems
power electronics
power system simulation
subMICs

UN SDGs

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

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Cite this

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title = "Recovery of Inter-Row Shading Losses Using Differential Power-Processing Submodule DC-DC Converters",

abstract = "Large commercial photovoltaic (PV) systems can experience regular and predictable energy loss due to both inter-row shading and reduced diffuse irradiance in tightly spaced arrays. This paper investigates the advantages of replacing bypass diodes with submodule-integrated DC-DC converters (subMICs) to mitigate these losses. Yearly simulations of commercial-scale PV systems were conducted considering a range of row-to-row pitches. In the limit case of array spacing (unity ground coverage), subMICs can confer a 7% increase in annual energy output and peak energy density (kW h/m2). Simulation results are based on efficiency assumptions experimentally confirmed by prototype submodule differential power-processing converters.",

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author = "Christopher Deline and Kate Doubleday and Carlos Olalla and Beomseok Choi and Dragan Maksimovic",

note = "Publisher Copyright: {\textcopyright} 2016.",

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doi = "10.1016/j.solener.2016.06.013",

language = "American English",

volume = "135",

pages = "512--517",

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T1 - Recovery of Inter-Row Shading Losses Using Differential Power-Processing Submodule DC-DC Converters

AU - Deline, Christopher

AU - Doubleday, Kate

AU - Olalla, Carlos

AU - Choi, Beomseok

AU - Maksimovic, Dragan

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Large commercial photovoltaic (PV) systems can experience regular and predictable energy loss due to both inter-row shading and reduced diffuse irradiance in tightly spaced arrays. This paper investigates the advantages of replacing bypass diodes with submodule-integrated DC-DC converters (subMICs) to mitigate these losses. Yearly simulations of commercial-scale PV systems were conducted considering a range of row-to-row pitches. In the limit case of array spacing (unity ground coverage), subMICs can confer a 7% increase in annual energy output and peak energy density (kW h/m2). Simulation results are based on efficiency assumptions experimentally confirmed by prototype submodule differential power-processing converters.

AB - Large commercial photovoltaic (PV) systems can experience regular and predictable energy loss due to both inter-row shading and reduced diffuse irradiance in tightly spaced arrays. This paper investigates the advantages of replacing bypass diodes with submodule-integrated DC-DC converters (subMICs) to mitigate these losses. Yearly simulations of commercial-scale PV systems were conducted considering a range of row-to-row pitches. In the limit case of array spacing (unity ground coverage), subMICs can confer a 7% increase in annual energy output and peak energy density (kW h/m2). Simulation results are based on efficiency assumptions experimentally confirmed by prototype submodule differential power-processing converters.

KW - distributed power electronics

KW - energy conversion

KW - MLPE

KW - partial shading

KW - photovoltaic systems

KW - power electronics

KW - power system simulation

KW - subMICs

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U2 - 10.1016/j.solener.2016.06.013

DO - 10.1016/j.solener.2016.06.013

M3 - Article

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SN - 0038-092X

VL - 135

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EP - 517

JO - Solar Energy

JF - Solar Energy

ER -

Recovery of Inter-Row Shading Losses Using Differential Power-Processing Submodule DC-DC Converters

Abstract

Bibliographical note

NREL Publication Number

Keywords

UN SDGs

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