Abstract: The present invention provides a die capable of achieving rapid forming and quenching therein. The die includes an upper die, a blank holder and a lower die, where the upper die is composed of an internal solid die core and a thin-walled skin. Grooves in communication with each other are disposed between the internal solid die core and the thin-walled skin. In a forming stage, the grooves are not filled or filled with a heat insulating material such as a gas; and in a quenching stage, a low-temperature medium is introduced into the grooves. The die can be used to achieve rapid forming and quenching of metal materials of different types and thicknesses.

Abstract: A method for use in deploying computers into a data center includes calculating in a computer an expected peak power draw for a plurality of computers. The expected peak power draw for the plurality of computers is less than a sum of individual expected peak power draws for each computer from the plurality of computers.

Abstract: An example battery-based energy storage device that comprises: a battery chamber configured to host a plurality of rechargeable battery packs; an operation chamber separated from the battery chamber by at least an insulation board; an energy storage inverter mounted on the operation chamber; a battery control box mounted on the operation chamber and configured to control one or more operations of the plurality of rechargeable battery packs; a first door rotatably mounted on the battery chamber; a second door rotatably mounted on the battery chamber. The first door and the second door open outward and are on opposite sides of the battery chamber; and a third door rotatably mounted on the operation chamber. The energy storage inverter is configured to convert AC to DC when charging a rechargeable battery pack and to convert DC to AC when providing power to an external device from a rechargeable battery pack.

Abstract: Provided is a method for quick forming of a hot metal sheet. The method relates to a technology for forming a metal sheet part, and solves the problem that the existing hot metal sheet forming technology cannot ensure that a blank is deformed under reasonable temperature and pressure conditions, thereby failing to realize precise and quick forming of a complex metal sheet part, especially a thin-walled part.

Abstract: The present invention discloses a gas pressure forming method of an ellipsoid. The formability of a closed polyhedral shell including polar plates, ellipsoidal side flap plates, and welded joints is improved, and the closed polyhedral shell is pressurized into an ellipsoid by using compressed gas under a heating condition, specifically comprising: assembling and welding two polar plates and ellipsoidal side flap plates into a closed polyhedral shell; disposing an electrode on the closed polyhedral shell, energizing and heating to a preset temperature, and then inflating compressed gas into the shell; deforming the closed polyhedral shell under the action of internal gas pressure, stopping inflating gas until a desired curvature shell is obtained, discharging gas, and removing the electrode to obtain a formed ellipsoid.

Abstract: A method of designing a data center can include determining a design power density, determining an oversubscription ratio, and determining a spatial layout of the data center using the design power density and the oversubscription ratio. The design power density can be in units of power per unit length.

Abstract: Disclosed are a compound as shown in formula I or formula II or a pharmaceutically acceptable salt thereof, wherein R1 is selected from pyrazinyl or substituted pyrazinyl; and R2 is selected from pyrazinyl or substituted pyrazinyl, phenyl or substituted phenyl, alkyl or substituted alkyl.

Abstract: Provided is a method for quick forming of a hot metal sheet. The method relates to a technology for forming a metal sheet part, and solves the problem that the existing hot metal sheet forming technology cannot ensure that a blank is deformed under reasonable temperature and pressure conditions, thereby failing to realize precise and quick forming of a complex metal sheet part, especially a thin-walled part.

Abstract: A method for use in deploying computers into a data center includes calculating in a computer an expected peak power draw for a plurality of computers. The expected peak power draw for the plurality of computers is less than a sum of individual expected peak power draws for each computer from the plurality of computers.

Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes supplying power to a portion of a data center through a power distribution line. Utilization of a statistically significant sample of the computers is monitored, and an estimated individual power draw for each of the computers based on the utilization is calculated. An estimated total power draw is calculated for different times from the estimated individual power draws to generate a collection of estimated total power draw values for the different times. Actual power draw is monitored at the power distribution line and a collection of actual power draw values is generated. A function is fitted to pairs of actual power draw values and estimated power draw values, each pair comprising an actual draw value and an estimated draw value for the same time, and the function is then stored.

Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes supplying power to a portion of a data center through a power distribution line. Utilization of a statistically significant sample of the computers is monitored, and an estimated individual power draw for each of the computers based on the utilization is calculated. An estimated total power draw is calculated for different times from the estimated individual power draws to generate a collection of estimated total power draw values for the different times. Actual power draw is monitored at the power distribution line and a collection of actual power draw values is generated. A function is fitted to pairs of actual power draw values and estimated power draw values, each pair comprising an actual draw value and an estimated draw value for the same time, and the function is then stored.

Abstract: A method of monitoring power load of a data center includes monitoring a power usage of a cluster of the data center, monitoring a power usage of a power distribution unit (PDU) of the data center, and monitoring a power usage of at least one of a rack of the data center or a computer within a rack of the data center.

Abstract: In a computer-implemented method, an electronic communication from a first computing machine is received and includes a power value and one or more priority values. The power value represents a request for a power allotment expected to be used during a predetermined time and the priority values represent priorities of tasks expected to be executed during the predetermined time. A score for the request is calculated using a scoring function and the received priority values as inputs to the scoring function. The score is compared to one or more other scores respectively associated with requests for power allotments from other computing machines and previously calculated using the scoring function following receipt of one or more electronic communications each including a power value and one or more priority values. A top-ranked score is identified and an electronic communication is sent to the associated computing machine granting the requested power allotment.

Abstract: A control method is disclosed that involves controlling zero-crossing operation of bridge arms in a UPS, wherein the UPS has a rectifying bridge with first and second switching transistors, a midline bridge arm with third and fourth switching transitors, and an inverter bridge arm with fifth and sixth switching transitors. The midline and rectifying bridge arms are controlled to cross zero synchronously. The inverter bridge arm is controlled to be disconnected during a period before a zero-crossing point of the rectifying bridge arm to a period after the zero-crossing point of the rectifying bridge arm. The periods before and after the zero-crossing point of the rectifying bridge arm are time differences between the zero-crossing points of the inverter bridge arm and the rectifying bridge arm. The influence of asynchronous zero-crossing between the PFC circuit and the inverter circuit on the UPS performance indices may be reduced by using the present control method.

Abstract: A method of controlling power usage in a data center includes monitoring a power usage of a plurality of computers in the data center, generating a signal indicating that the power usage is within a threshold of a maximum power capacity, and in response to the signal, adjusting performance of at least one computer in the plurality of computers.

Abstract: A method for use in deploying computers into a data center includes calculating in a computer an expected peak power draw for a plurality of computers. The expected peak power draw for the plurality of computers is less than a sum of individual expected peak power draws for each computer from the plurality of computers.

Abstract: A method of controlling power usage in a data center includes monitoring a power usage of a plurality of computers in the data center, generating a signal indicating that the power usage is within a threshold of a maximum power capacity, and in response to the signal, adjusting performance of at least one computer in the plurality of computers.

Abstract: A method for use in deploying computers into a data center includes calculating in a computer an expected peak power draw for a plurality of computers. The expected peak power draw for the plurality of computers is less than a sum of individual expected peak power draws for each computer from the plurality of computers.

Abstract: A data center includes a power distribution network having a power capacity, and a plurality of computers drawing power from the power distribution network. Each of the computers has a peak power draw. The power capacity is less than a maximum power draw defined by summing the peak power draw from each of the plurality of computers.

Abstract: In a computer-implemented method, an electronic communication from a first computing machine is received and includes a power value and one or more priority values. The power value represents a request for a power allotment expected to be used during a predetermined time and the priority values represent priorities of tasks expected to be executed during the predetermined time. A score for the request is calculated using a scoring function and the received priority values as inputs to the scoring function. The score is compared to one or more other scores respectively associated with requests for power allotments from other computing machines and previously calculated using the scoring function following receipt of one or more electronic communications each including a power value and one or more priority values. A top-ranked score is identified and an electronic communication is sent to the associated computing machine granting the requested power allotment.