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A simulation-based efficiency comparison of AC and DC power distribution networks in commercial buildings

Author

Listed:
  • Gerber, Daniel L.
  • Vossos, Vagelis
  • Feng, Wei
  • Marnay, Chris
  • Nordman, Bruce
  • Brown, Richard

Abstract

Direct current (DC) power distribution has recently gained traction in buildings research due to the proliferation of on-site electricity generation and battery storage, and an increasing prevalence of internal DC loads. The research discussed in this paper uses Modelica-based simulation to compare the efficiency of DC building power distribution with an equivalent alternating current (AC) distribution. The buildings are all modeled with solar generation, battery storage, and loads that are representative of the most efficient building technology. A variety of parametric simulations determine how and when DC distribution proves advantageous. These simulations also validate previous studies that use simpler approaches and arithmetic efficiency models.

Suggested Citation

  • Gerber, Daniel L. & Vossos, Vagelis & Feng, Wei & Marnay, Chris & Nordman, Bruce & Brown, Richard, 2018. "A simulation-based efficiency comparison of AC and DC power distribution networks in commercial buildings," Applied Energy, Elsevier, vol. 210(C), pages 1167-1187.
    • Handle: RePEc:eee:appene:v:210:y:2018:i:c:p:1167-1187
    DOI: 10.1016/j.apenergy.2017.05.179
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    References listed on IDEAS

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