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公开(公告)号：US10175743B2
公开(公告)日：2019-01-08
申请号：US15339113
申请日：2016-10-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaofei Zhang , Huiming Zhong , Jianjun Teng
Abstract: A power supply control apparatus, where the power supply control apparatus is configured to control power supply to a cabinet in a data center is presented, where the power supply control apparatus includes a communications module configured to receive an instruction of a network management center, and a controllable switch configured to adjust a capacity of the controllable switch according to the instruction to perform power-on/power-off control on the cabinet. In various embodiments, a power supply control apparatus may receive an instruction of a network management center, and can adjust a capacity of a controllable switch according to the instruction, which enhances power distribution flexibility, and therefore, a workload of changing a switch and a power cable can be reduced, and an engineering related risk can be avoided.
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公开(公告)号：US20170045931A1
公开(公告)日：2017-02-16
申请号：US15339113
申请日：2016-10-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaofei Zhang , Huiming Zhong , Jianjun Teng
CPC classification number: G06F1/3287 , G06F1/266 , G06F1/28 , G06F1/3209 , G06F11/3058 , G06F11/3062 , G06F11/3089 , H02J3/14 , H02J9/062 , H02J13/0062 , H02J2003/143 , Y02A30/62 , Y02B70/3225 , Y02B70/3266 , Y02B90/222 , Y02B90/226 , Y02B90/2638 , Y02D10/171 , Y04S20/12 , Y04S20/16 , Y04S20/222 , Y04S20/242 , Y04S40/124
Abstract: A power supply control apparatus, where the power supply control apparatus is configured to control power supply to a cabinet in a data center is presented, where the power supply control apparatus includes a communications module configured to receive an instruction of a network management center, and a controllable switch configured to adjust a capacity of the controllable switch according to the instruction to perform power-on/power-off control on the cabinet. In various embodiments, a power supply control apparatus may receive an instruction of a network management center, and can adjust a capacity of a controllable switch according to the instruction, which enhances power distribution flexibility, and therefore, a workload of changing a switch and a power cable can be reduced, and an engineering related risk can be avoided.
Abstract translation: 一种电源控制装置，其中电源控制装置被配置为控制对数据中心中的机柜的电力供应，其中电源控制装置包括被配置为接收网络管理中心的指令的通信模块，以及 可控开关，其被配置为根据用于在所述机柜上执行上电/断电控制的指令来调节所述可控开关的容量。 在各种实施例中，电源控制装置可以接收网络管理中心的指令，并且可以根据指令调整可控开关的容量，这增强了配电灵活性，因此，改变开关和 可以减少电力电缆，避免工程相关的风险。
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公开(公告)号：US11301470B2
公开(公告)日：2022-04-12
申请号：US16370343
申请日：2019-03-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Wenjie Liu , Jiansheng Wei , Xiaofei Zhang , Lei Chen
IPC: G06F16/2453 , G06F16/00 , G06F16/22 , G06F16/2455
Abstract: A control method for performing a multi-table join operation and a corresponding apparatus are disclosed. Fields in a table whose fields participating in a theta join operation and used in the query statement meet a first preset condition are decomposed, to obtain a plurality of first field groups, so that the theta join operation can be implemented in steps in a form of the plurality of field groups. This can reduce a data amount of Cartesian product calculation during one join operation, greatly reduce network transmission overheads, computing overheads, and memory overheads, and improve execution efficiency.
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公开(公告)号：US11239765B2
公开(公告)日：2022-02-01
申请号：US16698517
申请日：2019-11-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhuyong Huang , Xiaofei Zhang , Chuntao Zhang
IPC: H02M7/483 , H02M7/5387 , H02M7/487 , H02M1/00
Abstract: A multi-level circuit, a three-phase multi-level circuit, and a control method are provided. The multi-level circuit includes two groups of bus capacitors (C1 and C2) that are connected in series; a plurality of switching transistor branches that are connected in parallel to the capacitors, where each switching transistor branch includes a first half bridge (Q1 and Q2) and a second half bridge (Q3 and Q4), and a common terminal of the two half bridges is grounded (N); and two negative coupled inductors (L1 and L2), where each input terminal of each negative coupled inductor is connected to a common terminal (A1 and A2) of two switching transistors in the first half bridge in only one of the switching transistor branches. In this circuit, a quantity of groups of bus capacitors is decreased and circuit design complexity is reduced. Further, a dropout voltage of the switching transistors is reduced.
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