Hewlett Packard Enterprise Development LP

Other

Tas Energy, Inc.

Abhishek Banerjee

Hai Ngoc Nguyen

Daniel Hsieh

Darrel G Gaston

Jon Benson

Matthew E Stevens

James W Hollas

Chiung-Chao Hsieh

William J Bongers

Randall Erskine

Example implementations relate to concurrent alternating-current and direct-current. In one example, a device comprises a power module connected to a first power outlet, the power module connected to a second power outlet, and a controller to the power module to concurrently provide alternating-current (AC) power to the first power outlet and direct-current (DC) power to the second power outlet by switching a transistor including switching circuitry in response to an absence of AC input power to the device.

Concurrent alternating-current and direct-current

According to some examples, solutions are provided for power distribution of input alternating current (AC) power to at least one power outlet while the input AC power is available, charging of a set of batteries by the input AC power while the input AC power is available, and power distribution of direct current (DC) power from the set of batteries to the power outlet when the input AC power is not available. For such examples, the power outlet is capable of conducting AC power and DC power to a load that is coupled to the power outlet and that can receive either AC power or DC power.

Power distribution with batteries

In one example, a system for bypass switch control includes a controller coupled to a number of backup power modules and to a number of bypass switches that correspond to each of the number of backup power modules, wherein the controller activates a bypass switch when a corresponding backup power module is deactivated.

Bypass switch control

Examples disclosed herein relate to dual in-line memory module (DIMM) battery backup. Some examples disclosed herein describe systems that include a backup power source pluggable into a DIMM slot. The backup power source may include a plurality of battery cells electrically connected to a DIMM to provide backup power to the DIMM. Each of the plurality of battery cells supporting the DIMM may be electrically connected to a DC-to-DC converter in series and to each other in parallel.

Memory module battery backup

In one example, a system for parallel output of backup power modules includes a first backup power module coupled to an input and a first output of an enclosure, a second backup power module coupled to the input and a second output of the enclosure, wherein the second backup power module is coupled in parallel with the first backup power module, and a switch coupling the first backup power module and the first output of the enclosure to the second output of the enclosure.

Parallel output of backup power modules

Techniques for providing an uninterruptible power supply are disclosed. An example system includes three single-phase Uninterruptible Power Supplies (UPSs) and an adapter. The adapter is to receive three-phase AC power, and separate the three-phase AC power into three separate single-phase outputs. Each single-phase output is coupled to an input of one of the three single-phase UPSs. An output of each one of the single-phase UPSs is coupled to one of three single-phase inputs of the adapter, and the adapter is to combine the three single-phase inputs into a single three-phase output.

Uninterruptible power supply

According to an example, a battery is charged using a charge voltage based on a present state of charge of the battery and a present ambient temperature of the battery. Additionally, the charge voltage may be based on the present state of charge of the battery, the present ambient temperature of the battery, and an age of the battery. The charge voltage may be retrieved from a lookup table that includes a plurality of reference charge voltage values at which to charge the battery for different ambient temperatures, different states of charge, or different ages of the battery.

Battery charge voltage based on ambient temperature

Oscillation mitigation circuits are implemented in a system for supplying electric power to load circuit boards, for example, load circuit boards entirely immersed into a bath of dielectric heat transfer fluid. The oscillation mitigation circuits can be used to protect the load circuit boards, including the connectors mounted on these load circuit boards, from an anomalous behavior of the electric power. The oscillation mitigation circuits are coupled between wire bundles forming a portion of the electric power supply and the connectors mounted on the load circuit boards.

System for supplying electric power to a plurality of load circuit boards including a circuit for oscillation mitigation

An apparatus includes a plurality of energy storage modules (ESMs) to store charge. Each ESM includes module inputs to receive the charge. A plurality of charging circuits supply electrical energy to charge the ESMs via an output from each of the charging circuits. A switch network selectively switches each of the outputs from each of the charging circuits to the respective module inputs of each of the ESMs in response to a control command.

Charging energy storage modules

In various examples, a system comprises a rack-mountable power distribution unit (PDU). The PDU may: receive an alternating current (AC) power feed, convert the AC to a direct current (DC) power pool, determine an amount of available amount of power of the DC power pool to be delivered to devices electrically coupled to the PDU, and output the DC power pool to the devices coupled to the PDU based on the amount of available power.

Power distribution units

In an example, an apparatus includes a charger for rectifying a direct current charge from an input alternating current voltage. A battery pack stores the direct current charge in a first string of battery modules and a second string of battery modules. An inverter is connected directly to the battery pack and inverts the direct current voltage to an output alternating current voltage. In one example, the first string of battery modules is directly connected to the inverter in parallel with the second string of battery modules.

Uninterruptible power supply including battery modules connected directly to direct current-alternating current inverter

A system for two-phase immersion cooling includes an immersion tank, and a plurality of busbars, each busbar extending through a wall of the immersion tank. The system also includes a plurality of voltage converters mounted on a skid, on which the immersion tank can also be mounted. The system preferably includes means for preventing leakage of dielectric fluid around the busbars and means for connecting each busbar plate to the modular cases holding circuit boards that can be inserted into the immersion tank.

Electrical power distribution for immersion cooled information systems

A two-phase immersion cooling system includes two or more voltage converters and a plurality of circuit boards, which are held in a modular case inside an immersion tank. A layout for distributing electric power includes at least two busbars that are electrically connected in parallel to the positive and the negative terminals of the voltage converters, respectively. Each of the plurality of circuit boards is connected to the two busbars via wires that are bundled into wire harnesses. Each wire harness connects a series of connectors longitudinally aligned across the plurality of boards, to the two busbars.

Growing community of inventors

Houston, TX, United States of America

Abhishek Banerjee