Abstract: Datacenter current injection for power management is disclosed. A controller for managing power control modules and current sensing for a datacenter power infrastructure unit is provided. At least three power control modules coupled to the controller are each connected to each phase of a three-phase datacenter power grid. Current sense inputs for each phase of the datacenter power grid are coupled to the controller. At least three battery modules are coupled to a corresponding power control module. The coupling provides an energy path between a battery module and phase of the three-phase datacenter power grid. The coupling is managed by the controller. Each power control module includes a battery charging unit and a current mode grid tie inverter unit. The current mode grid tie inverter unit enables current injection into each phase of the three-phase datacenter power grid at constant voltage and in-phase AC frequency for the phase.

Abstract: Disclosed techniques for power management include datacenter power management through phase balancing. Power for a datacenter is obtained across a plurality of AC power phases. A power consumption value by loads is determined within the datacenter for each of a plurality of power phases. A power consumption imbalance is calculated between a first phase and a second phase from the plurality of power phases within the datacenter. Phase power balancing is performed by transferring power from the first phase to the second phase from the plurality of power phases within the datacenter. The transferring power is accomplished using current injection. The performing phase power balancing by transferring power from the first phase to the second phase comprises a supply side transfer of power. Performing phase power balancing by transferring power from the first phase to the second phase is accomplished without transferring load power consumption between power phases.

Abstract: Datacenter power management using current injection is disclosed. A datacenter topology that includes a utility grid feed, power caches, power control blocks, loads, and uninterruptible power supplies (UPSs) providing AC power is accessed. A supply capacity is allocated from a first UPS to the one or more loads within the datacenter, below a peak load requirement for the loads. It is also allocated based on a datacenter power policy. An AC current requirement is detected by the one or more power control blocks. The AC current requirement is detected for the one or more loads at the output network of the first UPS. AC current is injected into the output network of the first UPS by the one or more power control blocks. The AC current injection is based on the AC current requirement that was detected. The AC current injection is further based on the datacenter power policy.