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公开(公告)号：USD930584S1
公开(公告)日：2021-09-14
申请号：US29700911
申请日：2019-08-06
设计人： Xin Xiang , Xiang Zhang , Chengyong Du
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公开(公告)号：US20200154611A1
公开(公告)日：2020-05-14
申请号：US16067427
申请日：2018-06-12
发明人： Longlong DONG , Xing LI , Xin LIU , Cheng GAO , Peng NIE , Weiguang LI
IPC分类号： H05K7/20 , H05K7/14 , E05F15/608 , E05C19/16 , E05F15/72
摘要： The present invention discloses a skylight operating system of a modular data center, so as to timely respond to a firefighting requirement of the modular data center to reduce occurrence of firefighting-related accidents. The skylight operating system comprises: an electric skylight; a firefighting environment index monitoring device arranged inside the modular data center; a monitoring and interacting device arranged in a monitoring room outside the modular data center, and connected with the electric skylight and the firefighting environment index monitoring device, the monitoring and interacting device adapted for receiving monitoring information of the firefighting environment index monitoring device, and opening the electric skylight upon determination that a firefighting-related issue occurs inside the modular data center.
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公开(公告)号：US10601246B2
公开(公告)日：2020-03-24
申请号：US15507082
申请日：2015-08-31
发明人： Qigang Ding , Tong Ni , Bo Cao , Huajun Lv
摘要： A power supply system and method includes a power grid input unit and a diesel generator input unit, separately used for supplying an alternating current to a power supply unit. An automatic transfer switch unit is connected to the power grid input unit and the power supply unit or connected to the diesel generator input unit and the power supply unit, which is used for converting the received alternating current into a direct current. A control unit, which is used for monitoring a current load current and current diesel generator power, determines when to turn off a preset number of power supply loads according to a magnitude relationship between the current diesel generator power and the current load power, as well as according to priority levels of current loads.
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公开(公告)号：US10594208B2
公开(公告)日：2020-03-17
申请号：US15980043
申请日：2018-05-15
发明人： Yuan Zhou , Huawei Hu , Xiangbiao Peng
IPC分类号： H02M1/32 , H02M7/487 , H02M1/36 , H02M7/5387
摘要： A current limiting control method for a three-level inverter, comprising the following steps: S1. when a current output from a bridge arm is greater than or equal to a current limiting threshold and a received overcurrent signal is enabled, first turning off the main switch transistors and then turning off the auxiliary switch transistors; S2. when the current output from the bridge arm drops to lower than the current limiting threshold and the received overcurrent signal is disabled, turning on the auxiliary switch transistors; S3. when the received overcurrent signal is disabled and a next PWM effective edge of the main switch transistors arrives, turning on the main switch transistors. The present invention relates also to a current limiting control device for a three-level inverter. By implementing the present invention, it is possible to ensure voltage waveform quality and reduce switching loss.
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公开(公告)号：US10084391B2
公开(公告)日：2018-09-25
申请号：US15662768
申请日：2017-07-28
发明人： Fubin Xu , Yonghui Zhang , Yang Bing
IPC分类号： H02M7/217 , H02M7/219 , H02M7/487 , H02M7/5387 , H02M7/5388 , H02M7/48 , H02J3/38 , H02J7/35 , H02P6/04 , H02P27/06 , H02M1/00
CPC分类号： H02M7/48 , H02J3/38 , H02J7/35 , H02M7/217 , H02M7/219 , H02M7/487 , H02M7/5387 , H02M7/5388 , H02M2001/0054 , H02P6/04 , H02P27/06 , Y02B70/1491
摘要： An inverter, a method and a device for controlling the inverter are provided, to improve efficiency of the inverter. The inverter includes a three-level active clamped topology including a first and second bus capacitors and an inverter circuit, the inverter circuit includes a first switch transistor to a sixth switch transistor. The inverter further includes a seventh switch transistor and an eighth switch transistor; the seventh switch transistor and the eighth switch transistor are connected in series between the positive direct current bus and the negative direct current bus in a same direction, and a serial point of the seventh switch transistor and the eighth switch transistor is connected to a serial point of the second switch transistor and the third switch transistor; and the seventh switch transistor and the eighth switch transistor are anti-parallel connected to corresponding diodes respectively.
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公开(公告)号：US10050554B2
公开(公告)日：2018-08-14
申请号：US15363146
申请日：2016-11-29
发明人： Yunhe Mao , Zhixian Wu , Jian Li
摘要： A method and a device for controlling a Vienna-like three-level circuit are provided. The method includes: detecting an inductor current of an inductor connected to each operating high-frequency bridge arm in the Vienna-like three-level circuit during a positive half cycle of an AC input voltage; and in a case that a freewheeling switch transistor on the high-frequency bridge arm to which the inductor is connected is in an on state, and a main switch transistor is in an off state, controlling the freewheeling switch transistor to maintain in the on state and the main switch transistor to maintain in the off state if the detected inductor current does not reach a preset negative current, and controlling the freewheeling switch transistor to be turned off and the main switch transistor to be turned on if the detected inductor current reaches the preset negative current.
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公开(公告)号：US11988430B2
公开(公告)日：2024-05-21
申请号：US17993960
申请日：2022-11-24
发明人： Jie Guo , Sheng He , Chang Liu , Xiuling Li
CPC分类号： F25B49/022 , F25B9/002 , F25B9/10 , F25B2400/061 , F25B2600/0253 , F25B2600/13 , F25B2700/2104 , F25B2700/2106
摘要： An air conditioning unit includes: a first refrigeration system including a first evaporator, a first compressor, a first condenser, a first one-way valve, and a first throttling element connected in sequence in a loop as well as a second one-way valve connected in parallel with the first compressor, and a first fluorine pump connected in parallel with the first one-way valve; and a second refrigeration system including a second evaporator, a second compressor, a second condenser, a third one-way valve, and a second throttling element connected in sequence in a loop as well as a fourth one-way valve connected in parallel with the second compressor, and a second fluorine pump connected in parallel with the third one-way valve, where the first evaporator and the second evaporator are arranged front and rear in sequence along a return air cooling duct.
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8.发明公开公开(公告)号：US20240097575A1
公开(公告)日：2024-03-21
申请号：US18118100
申请日：2023-03-06
CPC分类号： H02M3/33592 , H02M1/0064 , H02M1/36
摘要： A rectifier converter of the UPS includes a rectifier discharge reuse module, a first mains switching module, a second mains switching module and a battery switching module. The rectifier discharge reuse module includes a filtering unit and a rectifier discharge unit that are connected to each other; the battery switching module is connected between a battery power supply and the filtering unit, and operates in a case that the battery power supply supplies power to the rectifier converter; and the first mains switching module is connected between a mains power supply and the filtering unit, the second mains switching module is connected between the filtering unit and the rectifier discharge unit, and the first mains switching module and the second mains switching module operate in a case that the mains power supply supplies power to the rectifier converter.
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公开(公告)号：US11044837B2
公开(公告)日：2021-06-22
申请号：US16067427
申请日：2018-06-12
发明人： Longlong Dong , Xing Li , Xin Liu , Cheng Gao , Peng Nie , Weiguang Li
IPC分类号： H05K7/20 , E05F15/608 , E05F15/72 , E05C19/16 , H05K7/14
摘要： The present invention discloses a skylight operating system of a modular data center, so as to timely respond to a firefighting requirement of the modular data center to reduce occurrence of firefighting-related accidents. The skylight operating system comprises: an electric skylight; a firefighting environment index monitoring device arranged inside the modular data center; a monitoring and interacting device arranged in a monitoring room outside the modular data center, and connected with the electric skylight and the firefighting environment index monitoring device, the monitoring and interacting device adapted for receiving monitoring information of the firefighting environment index monitoring device, and opening the electric skylight upon determination that a firefighting-related issue occurs inside the modular data center.
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公开(公告)号：US10763039B2
公开(公告)日：2020-09-01
申请号：US15420869
申请日：2017-01-31
发明人： Yunfeng Wei , Yaming Shi , Fubin Xu
IPC分类号： H01F41/06 , H01F41/069 , H01F27/38 , H01F37/00 , H01F38/08 , H01F27/30 , H01F38/02 , H02M3/158 , H02M1/14 , H02M1/00
摘要： Provided is an inductor winding method and an inductor winding device. The inductor winding method comprises steps of: A. dividing turns of coil of each winding of the inductor into a first winding and a second winding based on a preset ratio; B. winding the first winding on one of multiple magnetic columns, and winding the second winding on another one of the multiple magnetic columns which is different from the magnetic column on which the first winding is wound; and C. performing step A and step B cyclically until all the windings of the inductor are wound. With a coupling inductor having interleaving-wound structure, power frequency magnetic fluxes generated by magnetic lines in magnetic columns counteract one another, thereby solving the problem of high magnetic flux density in a magnetic core while achieving certain leakage inductance.
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