A Comprehensive Loss Model and Comparison of AC and DC Boost Converters

Daniel Gerber, Fariborz Musavi, Omkar Ghatpande, Stephen Frank, Jason Poon, Richard Brown, Wei Feng

Research output: Contribution to journalArticlepeer-review

4 Scopus Citations


DC microgrids have become a prevalent topic in research in part due to the expected superior efficiency of DC/DC converters compared to their AC/DC counterparts. Although numer-ous side-by-side analyses have quantified the efficiency benefits of DC power distribution, these studies all modeled converter loss based on product data that varied in component quality and operating voltage. To establish a fair efficiency comparison, this work derives a formulaic loss model of a DC/DC and an AC/DC PFC boost converter. These converters are modeled with identical components and an equivalent input and output voltage. Simulated designs with real components show AC/DC boost converters between 100 W to 500 W having up to 2.5 times more loss than DC/DC boost converters. Although boost converters represent a fraction of electronics in build-ings, these loss models can eventually work toward establishing a comprehensive model-based full-building analysis.

Original languageAmerican English
Article number3131
Number of pages21
Issue number11
StatePublished - 2021

Bibliographical note

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

NREL Publication Number

  • NREL/JA-5500-79153


  • AC-DC power conversion
  • DC power transmission
  • DC-DC power conversion
  • Losses
  • Power converter


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