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1. 发明授权

US10042007B2 Method for detecting a failing rectifier or rectifier source 有权
公开(公告)号：US10042007B2
公开(公告)日：2018-08-07
申请号：US15014275
申请日：2016-02-03
申请人： Liebert Corporation
发明人： Brian P. Heber
IPC分类号： G01R31/40 , H02M3/04 , H02M7/44 , H02M7/219 , H02J9/06 , H02M5/458
摘要： A method is provided for detecting a failure of a rectifier or a rectifier source in context of an uninterruptible power supply. The method includes: measuring an input current into the rectifier from a primary power source; determining a rate of change in the measured current; determining a current difference between a reference current and the measured current; measuring voltage output by the rectifier; determining a voltage difference between a reference voltage and the measured voltage; and detecting a failure condition of the rectifier as a function of the measured input current, the rate of change in the measured current, the current difference, the measured voltage and the voltage difference. More specifically, a failure condition of the rectifier is identified when the input current is decreasing and the rate of change in the measured current is decreasing and the current difference is increasing and the voltage difference is increasing.

2. 发明授权

US09970689B2 Cooling system having a condenser with a micro-channel cooling coil and sub-cooler having a fin-and-tube heat cooling coil 有权
公开(公告)号：US09970689B2
公开(公告)日：2018-05-15
申请号：US14855486
申请日：2015-09-16
申请人： Liebert Corporation
发明人： Daniel J. Schutte , Matthew Raven , Benedict J. Dolcich , Zhiyong Lin
IPC分类号： F25B40/02 , F25B13/00 , F25B39/02 , F25B23/00 , F25B39/04 , F25B6/04
CPC分类号： F25B13/00 , F25B6/04 , F25B23/006 , F25B39/02 , F25B39/04 , F25B40/02 , F25B2339/04 , F25B2400/0401
摘要： In an aspect, a cooling system has a cooling circuit that includes an evaporator, a condenser, a compressor, a sub-cooler and an expansion device configured in a direct expansion cooling circuit with the sub-cooler coupled in series between an outlet of the condenser and an inlet of the expansion device. The condenser has a micro-channel cooling coil and the sub-cooler has a fin-and-tube cooling coil. In an aspect, the fin-and-tube cooling coil of the sub-cooler has a total hydraulic volume equivalent to the total hydraulic volume of the micro-channel cooling coil of the condenser but the fin-and-tube cooling coil of the sub-cooler has a face area more than two times smaller than a face area of the micro-channel cooling coil of the condenser.

3. 发明授权

US09706685B2 Cooling system for high density heat loads 有权
公开(公告)号：US09706685B2
公开(公告)日：2017-07-11
申请号：US13723661
申请日：2012-12-21
申请人： Liebert Corporation
发明人： Thomas E. Harvey , Stephen Sillato
IPC分类号： F25B7/00 , H05K7/20
CPC分类号： H05K7/20709 , H05K7/20836
摘要： A pumped refrigerant cooling system having multiple pumping units for providing working fluid to a load to enable cooling of a space via the load. The pumped refrigerant cooling system operates the pumping units at less than capacity. When a pumping unit is deactivated, the output of the remaining pumping units is increased to maintain fluid flow.

4. 发明授权

US09572288B2 System and method for modular data center 有权
标题翻译：模块化数据中心的系统和方法
公开(公告)号：US09572288B2
公开(公告)日：2017-02-14
申请号：US14504081
申请日：2014-10-01
申请人： Liebert Corporation
发明人： Eric Wilcox , John Hoeffner , Stjepan Sinkovic , Denis Rancic , Zeljko Gjuranic
IPC分类号： H05K7/20 , H05K7/14 , E04H5/02 , E04H5/00
CPC分类号： H05K7/20736 , E04H5/02 , E04H2005/005 , H05K5/0256 , H05K7/1491 , H05K7/1492 , H05K7/1497 , H05K7/20745 , H05K7/20781 , Y10T29/49
摘要： A modular data center is disclosed. The modular data center may have a plurality of unit structures arranged generally parallel to one another. A plurality of supports may be used for supporting the unit structures elevationally above a floor, and wherein adjacent ones of the unit structures form hot aisles therebetween through which hot air generated from data center components may be channeled. Each unit structure may form an elongated structure having a frame structure, a roof panel supported by the frame structure, and a ceiling panel. The unit structures may be used to channel cold air to the data center components and hot air from the hot aisles out from the unit structures.
摘要翻译：公开了一种模块化数据中心。模块化数据中心可以具有大致平行彼此布置的多个单元结构。可以使用多个支撑件来支撑高于地板的单元结构，并且其中相邻的单元结构在其间形成热通道，通过该通道可以引导从数据中心部件产生的热空气。每个单元结构可以形成具有框架结构的细长结构，由框架结构支撑的屋顶面板和天花板面板。单元结构可用于将冷空气引导到来自单元结构的热通道的数据中心部件和热空气。

5. 发明授权

US09531288B2 Systems and methods for balancing UPS output voltages during transitions between operating modes 有权
标题翻译：在工作模式之间过渡期间平衡UPS输出电压的系统和方法
公开(公告)号：US09531288B2
公开(公告)日：2016-12-27
申请号：US14078884
申请日：2013-11-13
申请人： Liebert Corporation
发明人： Terry D. Bush , Brian P. Heber , Russell E. Shetler, Jr.
IPC分类号： H02M5/40 , H02J3/24
CPC分类号： H02M5/40 , H02J3/24 , H02J9/062 , Y10T307/406
摘要： A UPS includes an input that receives first power from a utility source to power a load and receives second power from the utility source. The load is separate from the UPS. An inverter receives when in a first mode, the first and second power and when in a second mode, the second power and not the first power. The second power is used to power the inverter. A bypass circuit is connected to the input and bypasses the inverter to supply the first power to an output of the UPS when operating in the second mode. A control module detects a voltage at the output of the UPS, integrates the voltage to generate a first sum, and subsequent to completing a transition between the first and second modes, adjusts an output voltage of the inverter based on the first sum to balance the voltage of the UPS.
摘要翻译： UPS包括一个输入端，该输入端接收来自公用电源的第一电力来为负载提供电力并从该电力源接收第二电力。负载与UPS分开。逆变器在第一模式下接收第一和第二功率，并且当处于第二模式时，第二功率而不是第一功率。第二个电源用于为变频器供电。旁路电路连接到输入端，并且旁路逆变器以在第二模式下工作时向UPS的输出端提供第一电力。控制模块检测UPS的输出端的电压，积分电压以产生第一和，并且在完成第一和第二模式之间的转换之后，根据第一和调整逆变器的输出电压，以平衡 UPS的电压。

6. 发明授权

US09270160B2 Repetitive servomechanism controller for uninterruptible power supply system 有权
标题翻译：用于不间断电源系统的重复伺服机构控制器
公开(公告)号：US09270160B2
公开(公告)日：2016-02-23
申请号：US14541667
申请日：2014-11-14
申请人： Liebert Corporation
发明人： Xian Chen
IPC分类号： H02M5/45 , H02M1/12 , H02J9/00 , H02M7/537
CPC分类号： H02M1/12 , H02J9/00 , H02J9/062 , H02M7/537 , H02M7/53873 , H02M7/53875 , H02M2007/53876
摘要： A repetitive servomechanism controller for a UPS system has an inner control loop and an outer control loop. The inner control loop regulates inverter current and the outer control loop regulates inverter voltage. The outer control loop includes a repetitive controller in combination with a harmonic servomechanism controller and a feed-forward controller.
摘要翻译：用于UPS系统的重复伺服机构控制器具有内部控制回路和外部控制回路。内部控制回路调节逆变器电流，外部控制回路调节逆变器电压。外部控制回路包括与谐波伺服机构控制器和前馈控制器组合的重复控制器。

7. 发明授权

US09038404B2 High efficiency cooling system 有权
标题翻译：高效率冷却系统
公开(公告)号：US09038404B2
公开(公告)日：2015-05-26
申请号：US13446374
申请日：2012-04-13
申请人： John F. Judge , Timothy J. Schrader , Stephen Sillato , Roger Noll , Gary A. Helmink , Pierpaolo Barbato , Giuseppe Dalla Mana , Lou Monnier , Zhiyong Lin , Benedict J. Dolcich , Daniel J. Schutte , Greg Haggy , Thomas Harvey , Zongtao Lu
发明人： John F. Judge , Timothy J. Schrader , Stephen Sillato , Roger Noll , Gary A. Helmink , Pierpaolo Barbato , Giuseppe Dalla Mana , Lou Monnier , Zhiyong Lin , Benedict J. Dolcich , Daniel J. Schutte , Greg Haggy , Thomas Harvey , Zongtao Lu
IPC分类号： F25B41/04 , F25B49/02 , H05K7/20 , F25D17/06
CPC分类号： H05K7/20836 , F24F1/022 , F24F3/044 , F24F11/46 , F25B25/00 , F25B41/00 , F25B41/043 , F25B45/00 , F25B49/02 , F25B49/022 , F25B2400/06 , F25B2400/0751 , F25B2500/31 , F25D17/06 , H05K7/20827
摘要： A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.
摘要翻译：冷却系统具有机柜和多个单独的冷却级，包括上游冷却级和下游冷却级。至少上游冷却状态是可变容量冷却阶段。每个冷却阶段都有一个冷却回路。冷却回路的蒸发器布置在机柜中，使得空气以串联的方式穿过它们。当冷却呼叫首先到达需要冷却的点时，控制器操作上游冷却回路以提供冷却而不是下游冷却回路。当冷却呼叫增加到第二点时，控制器另外操作下游冷却回路以提供冷却。上游冷却回路正在运行的冷却能力小于其致冷要求达到第二点的全部容量。

8. 发明授权

US08908405B2 Snubber circuit and inverter with the same 有权
标题翻译：缓冲电路与变频器相同
公开(公告)号：US08908405B2
公开(公告)日：2014-12-09
申请号：US13524464
申请日：2012-06-15
申请人： Jianning Yang
发明人： Jianning Yang
IPC分类号： H02M7/5387 , H02M7/537 , H02M7/44 , H02M3/24 , H02M7/487 , H02M1/34
CPC分类号： H02M7/487 , H02M1/34 , H02M2001/346 , H02M2001/348 , Y02B70/1491
摘要： An inverter may include an inversion unit for converting a direct current bus voltage into an alternating current voltage, a first snubber unit, and a second snubber unit. The inversion unit may include a first external switch, a first internal switch, a second internal switch, and a second external switch which are connected in series in order between a direct current bus positive voltage terminal and a direct current bus negative voltage terminal. The first snubber unit may be connected between the direct current bus negative voltage terminal and the first internal switch for suppressing voltage stress of the first internal switch. The second snubber unit may be connected between the direct current bus positive voltage terminal and the second internal switch for suppressing voltage stress of the second internal switch.
摘要翻译：逆变器可以包括用于将直流总线电压转换为交流电压的反转单元，第一缓冲单元和第二缓冲单元。反转单元可以包括在直流总线正电压端子和直流母线负电压端子之间依次串联连接的第一外部开关，第一内部开关，第二内部开关和第二外部开关。第一缓冲器单元可以连接在直流总线负电压端子和第一内部开关之间，用于抑制第一内部开关的电压应力。第二缓冲器单元可以连接在直流母线正电压端子和第二内部开关之间，用于抑制第二内部开关的电压应力。

9. 发明授权

US08881541B2 Cooling system with tandem compressors and electronic expansion valve control 有权
标题翻译：带串联压缩机和电子膨胀阀控制的冷却系统
公开(公告)号：US08881541B2
公开(公告)日：2014-11-11
申请号：US13446390
申请日：2012-04-13
申请人： Roger Noll , Gary A. Helmink , Pierpaolo Barbato , Giuseppe Dalla Mana , Lou Monnier
发明人： Roger Noll , Gary A. Helmink , Pierpaolo Barbato , Giuseppe Dalla Mana , Lou Monnier
IPC分类号： F25B41/04 , F25B49/02 , F25B40/00
CPC分类号： F25B13/00 , F25B40/00 , F25B41/043 , F25B49/02 , F25B49/022 , F25B49/027 , F25B2400/0401 , F25B2400/0403 , F25B2400/0411 , F25B2400/0415 , F25B2400/05 , F25B2400/06 , F25B2400/075 , F25B2600/111 , F25B2600/2513 , Y02B30/743
摘要： A cooling system has a tandem compressor, a condenser, an electronic expansion valve and an evaporator arranged in a direct expansion cooling circuit. The tandem compressor includes a variable capacity compressor and a fixed capacity compressor. A controller controls the electronic expansion valve and selects which of a plurality of superheat control modes to use in operating the electronic expansion valve based on control parameters and a current operating status of each of the variable capacity compressor and fixed capacity compressor of the tandem compressor.
摘要翻译：冷却系统具有布置在直接膨胀冷却回路中的串联压缩机，冷凝器，电子膨胀阀和蒸发器。串联压缩机包括可变容量的压缩机和固定容量的压缩机。控制器控制电子膨胀阀，并且基于控制参数和串联压缩机的可变容量压缩机和固定容量压缩机的当前运行状态来选择用于操作电子膨胀阀的多个过热控制模式中的哪一个。

10. 发明申请

US20140281649A1 Method For Automatic Mapping Of AC Phase Conductors And Identification Of AC Buses In A Multi-Bus Power System 有权
标题翻译：交流相位导体自动映射方法及多总线电力系统交流母线识别方法
公开(公告)号：US20140281649A1
公开(公告)日：2014-09-18
申请号：US14164891
申请日：2014-01-27
申请人： Liebert Corporation
发明人： Richard J. ZAJKOWSKI
IPC分类号： G06F11/30
CPC分类号： G06F11/3062 , G06F11/3006 , G06F11/3048 , G06F11/3051 , G06F11/3058 , G06F11/3089
摘要： A system is disclosed for detecting if a remote device is associated with a power supply. The system may have a controller having machine readable, non-transitory executable code running thereon for varying a characteristic of a signal being applied to the power supply. The controller further may be configured to compare a measurement obtained from a measurement subsystem relating to a measured signal present at the remote device. The controller may also be configured to make a comparison between the signal being applied to the power supply and the measured signal obtained at the remote device, and to determine whether the remote device is electrically associated with the power supply.
摘要翻译：公开了一种用于检测远程设备是否与电源相关联的系统。系统可以具有控制器，其具有在其上运行的机器可读的非暂时可执行代码，用于改变施加到电源的信号的特性。控制器还可以被配置为比较从与远程设备上存在的测量信号相关的测量子系统获得的测量值。控制器还可以被配置为在施加到电源的信号和在远程设备处获得的测量信号之间进行比较，并且确定远程设备是否与电源电连接。

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