Endpoint Use Efficiency Comparison for AC and DC Power Distribution in Commercial Buildings

Advances in power electronics and their use in Miscellaneous Electric Loads (MELs) in buildings have resulted in increased interest in using low-voltage direct current (DC) power distribution as a replacement for the standard alternating current (AC) power distribution in buildings. Both systems req...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Arthur Santos [verfasserIn] Gerald Duggan [verfasserIn] Stephen Frank [verfasserIn] Daniel Gerber [verfasserIn] Daniel Zimmerle [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	DC distribution AC/DC converters DC/DC converters miscellaneous electric loads

Übergeordnetes Werk:	In: Energies - MDPI AG, 2008, 14(2021), 18, p 5863
Übergeordnetes Werk:	volume:14 ; year:2021 ; number:18, p 5863

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/en14185863

Katalog-ID:	DOAJ031487378

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allfieldsSound	10.3390/en14185863 doi (DE-627)DOAJ031487378 (DE-599)DOAJ73936feb7e5146fe860198aad3820857 DE-627 ger DE-627 rakwb eng Arthur Santos verfasserin aut Endpoint Use Efficiency Comparison for AC and DC Power Distribution in Commercial Buildings 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Advances in power electronics and their use in Miscellaneous Electric Loads (MELs) in buildings have resulted in increased interest in using low-voltage direct current (DC) power distribution as a replacement for the standard alternating current (AC) power distribution in buildings. Both systems require an endpoint converter to convert the distribution system voltage to the MELs voltage requirements. This study focused on the efficiency of these endpoint converters by testing pairs of AC/DC and DC/DC power converters powering the same load profile. In contrast to prior studies, which estimated losses based on data sheet efficiency and rated loads, in this study, we used part load data derived from real-world time-series load measurements of MELs and experimentally characterized efficiency curves for all converters. The measurements performed for this study showed no systematic efficiency advantage for commercially available DC/DC endpoint converters relative to comparable, commercially available AC/DC endpoint converters. For the eight appliances analyzed with the pair of converters tested, in 50%, the weighted energy efficiency of the DC/DC converter was higher, while, for the other 50%, the AC/DC converter was. Additionally, the measurements indicated that the common assumption of using either data sheet efficiency values or efficiency at full load may result in substantial mis-estimates of the system efficiency. DC distribution AC/DC converters DC/DC converters miscellaneous electric loads Technology T Gerald Duggan verfasserin aut Stephen Frank verfasserin aut Daniel Gerber verfasserin aut Daniel Zimmerle verfasserin aut In Energies MDPI AG, 2008 14(2021), 18, p 5863 (DE-627)572083742 (DE-600)2437446-5 19961073 nnns volume:14 year:2021 number:18, p 5863 https://doi.org/10.3390/en14185863 kostenfrei https://doaj.org/article/73936feb7e5146fe860198aad3820857 kostenfrei https://www.mdpi.com/1996-1073/14/18/5863 kostenfrei https://doaj.org/toc/1996-1073 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 14 2021 18, p 5863
language	English
source	In Energies 14(2021), 18, p 5863 volume:14 year:2021 number:18, p 5863
sourceStr	In Energies 14(2021), 18, p 5863 volume:14 year:2021 number:18, p 5863
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topic_facet	DC distribution AC/DC converters DC/DC converters miscellaneous electric loads Technology T
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authorswithroles_txt_mv	Arthur Santos @@aut@@ Gerald Duggan @@aut@@ Stephen Frank @@aut@@ Daniel Gerber @@aut@@ Daniel Zimmerle @@aut@@
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author	Arthur Santos
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topic_title	Endpoint Use Efficiency Comparison for AC and DC Power Distribution in Commercial Buildings DC distribution AC/DC converters DC/DC converters miscellaneous electric loads
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title	Endpoint Use Efficiency Comparison for AC and DC Power Distribution in Commercial Buildings
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title_sort	endpoint use efficiency comparison for ac and dc power distribution in commercial buildings
title_auth	Endpoint Use Efficiency Comparison for AC and DC Power Distribution in Commercial Buildings
abstract	Advances in power electronics and their use in Miscellaneous Electric Loads (MELs) in buildings have resulted in increased interest in using low-voltage direct current (DC) power distribution as a replacement for the standard alternating current (AC) power distribution in buildings. Both systems require an endpoint converter to convert the distribution system voltage to the MELs voltage requirements. This study focused on the efficiency of these endpoint converters by testing pairs of AC/DC and DC/DC power converters powering the same load profile. In contrast to prior studies, which estimated losses based on data sheet efficiency and rated loads, in this study, we used part load data derived from real-world time-series load measurements of MELs and experimentally characterized efficiency curves for all converters. The measurements performed for this study showed no systematic efficiency advantage for commercially available DC/DC endpoint converters relative to comparable, commercially available AC/DC endpoint converters. For the eight appliances analyzed with the pair of converters tested, in 50%, the weighted energy efficiency of the DC/DC converter was higher, while, for the other 50%, the AC/DC converter was. Additionally, the measurements indicated that the common assumption of using either data sheet efficiency values or efficiency at full load may result in substantial mis-estimates of the system efficiency.
abstractGer	Advances in power electronics and their use in Miscellaneous Electric Loads (MELs) in buildings have resulted in increased interest in using low-voltage direct current (DC) power distribution as a replacement for the standard alternating current (AC) power distribution in buildings. Both systems require an endpoint converter to convert the distribution system voltage to the MELs voltage requirements. This study focused on the efficiency of these endpoint converters by testing pairs of AC/DC and DC/DC power converters powering the same load profile. In contrast to prior studies, which estimated losses based on data sheet efficiency and rated loads, in this study, we used part load data derived from real-world time-series load measurements of MELs and experimentally characterized efficiency curves for all converters. The measurements performed for this study showed no systematic efficiency advantage for commercially available DC/DC endpoint converters relative to comparable, commercially available AC/DC endpoint converters. For the eight appliances analyzed with the pair of converters tested, in 50%, the weighted energy efficiency of the DC/DC converter was higher, while, for the other 50%, the AC/DC converter was. Additionally, the measurements indicated that the common assumption of using either data sheet efficiency values or efficiency at full load may result in substantial mis-estimates of the system efficiency.
abstract_unstemmed	Advances in power electronics and their use in Miscellaneous Electric Loads (MELs) in buildings have resulted in increased interest in using low-voltage direct current (DC) power distribution as a replacement for the standard alternating current (AC) power distribution in buildings. Both systems require an endpoint converter to convert the distribution system voltage to the MELs voltage requirements. This study focused on the efficiency of these endpoint converters by testing pairs of AC/DC and DC/DC power converters powering the same load profile. In contrast to prior studies, which estimated losses based on data sheet efficiency and rated loads, in this study, we used part load data derived from real-world time-series load measurements of MELs and experimentally characterized efficiency curves for all converters. The measurements performed for this study showed no systematic efficiency advantage for commercially available DC/DC endpoint converters relative to comparable, commercially available AC/DC endpoint converters. For the eight appliances analyzed with the pair of converters tested, in 50%, the weighted energy efficiency of the DC/DC converter was higher, while, for the other 50%, the AC/DC converter was. Additionally, the measurements indicated that the common assumption of using either data sheet efficiency values or efficiency at full load may result in substantial mis-estimates of the system efficiency.
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title_short	Endpoint Use Efficiency Comparison for AC and DC Power Distribution in Commercial Buildings
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Endpoint Use Efficiency Comparison for AC and DC Power Distribution in Commercial Buildings

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