Institute of Electrical & Electronic Engineers
Datacenters are large cyber-physical systems with continuous performance and power measurements, and real-time control decisions related to workload placement, cooling and power subsystems etc. In this paper, the authors focus on the non-ideal UPS system used to shave peak power demands. Their novel distributed battery control design has no performance impact, reduces the peak power needs, and accurately estimates and maximizes the battery lifetime. They demonstrate that models which do not take into account physical characteristics of batteries overestimate their lifetime by 2.4x.