Quantitative Efficiency Analysis of Power Distribution Configurations for Data Centres

Further Reading

• Quantitative Efficiency Analysis of Power Distribution Configurations for Data Centers (520)

This analysis builds on the previously released Qualitative Analysis of Power Distribution Configurations For Data Centres. It takes a quantitative look at one aspect of the previous paper: efficiency.

This paper studies the end-to-end effciency of eight simplified, non-redundant data centre power distribution configurations. The data shows that a data centre with optimised implementations of all of the topologies achieves approximately 25% higher efficiency than a typical data centre of 10 years ago, delivering between 85% and 90% end-to-end efficiency over a wide load range. The highest efficiency AC and DC configurations are within 1% to 2% of each other and are only 2% to 3% better than double conversion 480Vac - 208Vac over the majority of the load range. No single configuration provides the highest efficiency at every load.

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