A Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles

Stephen Frank; Eric Bonnema; Jennifer Scheib; Eric Wilson; Daniel Fregosi; Sharmila Ravula; John Saussele; Dusan Brhlik

doi:10.1109/ICDCM.2015.7152031

A Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles

Stephen Frank
, Eric Bonnema
, Jennifer Scheib
, Eric Wilson
, Daniel Fregosi
, Sharmila Ravula
, John Saussele
, Dusan Brhlik

Building Technologies and Science Center

Robert Bosch

Research output: Contribution to conference › Paper › peer-review

129 Scopus Citations

Abstract

Bosch has developed and demonstrated a novel direct current (DC) microgrid system that maximizes the efficiency of locally generated photovoltaic energy while offering high reliability, safety, redundancy, and reduced cost compared to equivalent alternating current (AC) systems. Several demonstration projects validating the system feasibility and expected efficiency gains have been completed and additional ones are in progress. This paper gives an overview of the Bosch DC microgrid system and presents key results from a large simulation study done to estimate the energy savings of the Bosch DC microgrid over conventional AC systems. The study examined the system performance in locations across the United States for several commercial building types and operating profiles. It found that the Bosch DC microgrid uses generated PV energy 6%-8% more efficiently than traditional AC systems.

Original language	American English
Pages	159-164
Number of pages	6
DOIs	https://doi.org/10.1109/ICDCM.2015.7152031 https://doi.org/10.1109/ICDCM.2015.7152031
State	Published - 2015
Event	2015 IEEE First International Conference on DC Microgrids (ICDCM) - Atlanta, Georgia Duration: 7 Jun 2015 → 10 Jun 2015

Conference

Conference	2015 IEEE First International Conference on DC Microgrids (ICDCM)
City	Atlanta, Georgia
Period	7/06/15 → 10/06/15

Bibliographical note

See NREL/CP-5500-63959 for preprint

NLR Publication Number

NREL/CP-5500-65136

Keywords

DC microgrid
energy efficiency
LED
PV

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Frank, S., Bonnema, E., Scheib, J., Wilson, E., Fregosi, D., Ravula, S., Saussele, J., & Brhlik, D. (2015). A Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles. 159-164. Paper presented at 2015 IEEE First International Conference on DC Microgrids (ICDCM), Atlanta, Georgia. https://doi.org/10.1109/ICDCM.2015.7152031, https://doi.org/10.1109/ICDCM.2015.7152031

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title = "A Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles",

abstract = "Bosch has developed and demonstrated a novel direct current (DC) microgrid system that maximizes the efficiency of locally generated photovoltaic energy while offering high reliability, safety, redundancy, and reduced cost compared to equivalent alternating current (AC) systems. Several demonstration projects validating the system feasibility and expected efficiency gains have been completed and additional ones are in progress. This paper gives an overview of the Bosch DC microgrid system and presents key results from a large simulation study done to estimate the energy savings of the Bosch DC microgrid over conventional AC systems. The study examined the system performance in locations across the United States for several commercial building types and operating profiles. It found that the Bosch DC microgrid uses generated PV energy 6\%-8\% more efficiently than traditional AC systems.",

keywords = "DC microgrid, energy efficiency, LED, PV",

author = "Stephen Frank and Eric Bonnema and Jennifer Scheib and Eric Wilson and Daniel Fregosi and Sharmila Ravula and John Saussele and Dusan Brhlik",

note = "See NREL/CP-5500-63959 for preprint; 2015 IEEE First International Conference on DC Microgrids (ICDCM) ; Conference date: 07-06-2015 Through 10-06-2015",

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doi = "10.1109/ICDCM.2015.7152031",

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Frank, S, Bonnema, E, Scheib, J, Wilson, E, Fregosi, D, Ravula, S, Saussele, J & Brhlik, D 2015, 'A Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles', Paper presented at 2015 IEEE First International Conference on DC Microgrids (ICDCM), Atlanta, Georgia, 7/06/15 - 10/06/15 pp. 159-164. https://doi.org/10.1109/ICDCM.2015.7152031, https://doi.org/10.1109/ICDCM.2015.7152031

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T1 - A Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles

AU - Frank, Stephen

AU - Bonnema, Eric

AU - Scheib, Jennifer

AU - Wilson, Eric

AU - Fregosi, Daniel

AU - Ravula, Sharmila

AU - Saussele, John

AU - Brhlik, Dusan

N1 - See NREL/CP-5500-63959 for preprint

PY - 2015

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N2 - Bosch has developed and demonstrated a novel direct current (DC) microgrid system that maximizes the efficiency of locally generated photovoltaic energy while offering high reliability, safety, redundancy, and reduced cost compared to equivalent alternating current (AC) systems. Several demonstration projects validating the system feasibility and expected efficiency gains have been completed and additional ones are in progress. This paper gives an overview of the Bosch DC microgrid system and presents key results from a large simulation study done to estimate the energy savings of the Bosch DC microgrid over conventional AC systems. The study examined the system performance in locations across the United States for several commercial building types and operating profiles. It found that the Bosch DC microgrid uses generated PV energy 6%-8% more efficiently than traditional AC systems.

AB - Bosch has developed and demonstrated a novel direct current (DC) microgrid system that maximizes the efficiency of locally generated photovoltaic energy while offering high reliability, safety, redundancy, and reduced cost compared to equivalent alternating current (AC) systems. Several demonstration projects validating the system feasibility and expected efficiency gains have been completed and additional ones are in progress. This paper gives an overview of the Bosch DC microgrid system and presents key results from a large simulation study done to estimate the energy savings of the Bosch DC microgrid over conventional AC systems. The study examined the system performance in locations across the United States for several commercial building types and operating profiles. It found that the Bosch DC microgrid uses generated PV energy 6%-8% more efficiently than traditional AC systems.

KW - DC microgrid

KW - energy efficiency

KW - LED

KW - PV

UR - https://www.scopus.com/pages/publications/84941105367

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DO - 10.1109/ICDCM.2015.7152031

M3 - Paper

AN - SCOPUS:84941105367

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T2 - 2015 IEEE First International Conference on DC Microgrids (ICDCM)

Y2 - 7 June 2015 through 10 June 2015

ER -

A Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles

Abstract

Conference

Bibliographical note

NLR Publication Number

Keywords

Access to Document

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