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11. 发明申请

US20160094209A1 METHOD AND CIRCUIT FOR ELIMINATING TRANSFORMER SATURATION IN THE PRESENCE OF DC OFFSET VOLTAGE 审中-公开
标题翻译：在直流偏置电压存在下消除变压器饱和的方法和电路
公开(公告)号：US20160094209A1
公开(公告)日：2016-03-31
申请号：US14851295
申请日：2015-09-11
申请人： Liebert Corporation
发明人： Terry D. BUSH , Charles DUNN , James MILLER , Charles F. BLAIR
IPC分类号： H03K5/003 , H03K17/74
CPC分类号： H03K5/003 , H03K17/74
摘要： A DC offset voltage in an AC input voltage to a transformer and associated saturation current are eliminated by the placement of an anti-parallel diode pair circuit in series between a source of the AC input voltage and a primary winding of the transformer. The anti-parallel diode pair circuit has an input coupled to an output by parallel connected oppositely biased branch diode circuits. Each branch diode circuit has at least one diode where the diode of one such branch diode circuit is biased in one direction and the diode of the other such branch diode circuit is biased in an opposite direction and each branch diode circuit has the same number of diodes as the other branch diode circuit.
摘要翻译：通过在AC输入电压源和变压器的初级绕组之间串联布置反并联二极管对电路，消除了到变压器的交流输入电压和相关饱和电流中的直流偏移电压。反并联二极管对电路具有通过并联的相对偏置的分支二极管电路耦合到输出的输入。每个分支二极管电路具有至少一个二极管，其中一个这种分支二极管电路的二极管在一个方向上被偏置，而另一个这样的分支二极管电路的二极管被以相反的方向偏置，并且每个分支二极管电路具有相同数量的二极管作为其他分支二极管电路。

12. 发明申请

US20150244206A1 3-WIRE TRANSFORMER-FREE UPS SYSTEM AND METHOD OF CONTROL TO REDUCE COMMON MODE CURRENT 审中-公开
标题翻译： 3线无变压器UPS系统和减少通用模式电流的控制方法
公开(公告)号：US20150244206A1
公开(公告)日：2015-08-27
申请号：US14615814
申请日：2015-02-06
申请人： Liebert Corporation
发明人： Edwin SHIRES , Terry D. BUSH , Brian P. HEBER , Charles F. BLAIR
IPC分类号： H02J9/00 , H02M7/42
CPC分类号： H02J9/062 , Y10T307/549
摘要： A common mode choke in a 3-wire transformer free UPS system with which different rectifier and bypass power sources are used is eliminated by using different types of PWM control depending on whether the inverter is paralleled with the bypass power source. When the inverter is paralleled with the bypass power source, a type of PWM control is used that does not have common mode voltage injection. When the inverter is not paralleled with the bypass power source, a type of PWM control is used that has common mode voltage injection. In an aspect, the PWM control that does not have common mode voltage injection is sine-triangle PWM and the PWM control that has common mode voltage injection is space-vector PWM.
摘要翻译：根据变频器是否与旁路电源并联，通过使用不同类型的PWM控制，消除了使用不同整流器和旁路电源的3线无变压器UPS系统中的共模扼流圈。当逆变器与旁路电源并联时，使用一种不具有共模电压注入的PWM控制。当逆变器不与旁路电源并联时，使用具有共模电压注入的一种PWM控制。在一个方面，没有共模电压注入的PWM控制是正弦三角PWM，具有共模电压注入的PWM控制是空间矢量PWM。

13. 发明申请

US20150230367A1 High Efficiency Cooling System 有权
标题翻译：高效冷却系统
公开(公告)号：US20150230367A1
公开(公告)日：2015-08-13
申请号：US14693478
申请日：2015-04-22
申请人： Liebert Corporation
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
IPC分类号： H05K7/20 , F25B49/02 , F25D17/06 , F25B41/04
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。

14. 发明授权

US09083038B2 Battery cell terminal quick connect clamp with connecting tab 有权
标题翻译：电池单元端子快速连接夹具与连接片
公开(公告)号：US09083038B2
公开(公告)日：2015-07-14
申请号：US14049267
申请日：2013-10-09
申请人： Liebert Corporation
发明人： James R. Jones
IPC分类号： H01R4/28 , H01M2/20 , H01R11/28 , G01R31/36 , H01M2/30
CPC分类号： H01M2/206 , G01R1/00 , G01R31/3637 , G01R31/3696 , H01M2/305 , H01R11/282
摘要： A battery cell terminal quick connect clamp for attaching to a battery cell terminal has a conductive contact coupled to a connecting element to which a connector attached to the end of a battery monitoring lead can attach. The quick connect clamp includes a clamping mechanism that when in a clamped position presses the conductive contact against a side of the battery cell terminal.
摘要翻译：用于连接到电池单元端子的电池单元端子快速连接夹具具有连接到连接到电池监视引线的端部上的连接器可连接到的连接元件的导电触点。快速连接夹具包括夹紧机构，当夹紧位置将导电触头压靠在电池单元端子的一侧时。

15. 发明申请

US20150137604A1 METHOD TO SELECT OPTIMAL SYNCHRONIZATION SOURCE IN A MULTIPLE UNINTERRUPTIBLE POWER SUPPLY SYSTEM 有权
标题翻译：在多个不间断电源系统中选择最佳同步信号源的方法
公开(公告)号：US20150137604A1
公开(公告)日：2015-05-21
申请号：US14529190
申请日：2014-10-31
申请人： Liebert Corporation
发明人： Xian CHEN , Brian P. HEBER
IPC分类号： H02J3/08 , H02J9/00
CPC分类号： H02J3/08 , H02J3/005 , H02J3/40 , H02J9/00 , H02J9/062 , Y02P80/14 , Y02P80/152 , Y10T307/62
摘要： A multiple uninterruptible power supply system includes at least two uninterruptible power supply modules. Each uninterruptible power supply module has a control unit with the control unit coupled to a synchronization bus. The uninterruptible power supply module are synchronized to each other with one of the uninterruptible power supply modules being operated as a sync master UPS and its control unit sending synchronization signals on the synchronization bus that are received on the synchronization bus by control units of each of the other uninterruptible power supply module which are each operated as a slave UPS synchronized to the sync master UPS. When a bypass power source for the uninterruptible power supply module that is being operated as the sync master becomes unqualified, another one of the UPS modules is operated as the sync master and its control unit then sends out the synchronization signals.
摘要翻译：多个不间断电源系统包括至少两个不间断电源模块。每个不间断电源模块具有控制单元，控制单元耦合到同步总线。不间断电源模块彼此同步，其中一个不间断电源模块作为同步主UPS操作，其控制单元在同步总线上发送同步信号，同步总线上接收的同步信号由控制单元其他不间断电源模块，其各自作为与同步主UPS同步的从UPS来操作。当作为同步主机操作的不间断电源模块的旁路电源变得不合格时，另一个UPS模块作为同步主机运行，其控制单元发出同步信号。

16. 发明申请

US20140266784A1 MESH NETWORK SYNCHRONOUS POWER MONITORING SYSTEMS AND METHODS 有权
标题翻译： MESH网络同步电力监控系统及方法
公开(公告)号：US20140266784A1
公开(公告)日：2014-09-18
申请号：US14197594
申请日：2014-03-05
申请人： Liebert Corporation
发明人： Gregory W. RATCLIFF
IPC分类号： G01D4/00
CPC分类号： G01D4/004 , G01R21/133 , G01R22/063 , H04Q9/00 , H04Q2209/25 , Y02B90/242 , Y02B90/246 , Y04S20/322 , Y04S20/42
摘要： A system including a transceiver that is in a first device and receives wirelessly or over a powerline and from a second device, (i) a voltage value of a voltage detected between bus bars of a power source, where the power source supplies power to a load, and where the load is distinct from the first and second devices, or (ii) a current value of a current detected by a current sensor and drawn from the power source by the load. A sensing module one of (i) if the transceiver receives the current, detects the voltage and timestamps the voltage value with a first timestamp, and (ii) if the transceiver receives the voltage, determines the current and timestamps the current value with a second timestamp. A parameter module determines a parameter of the load based on the voltage, the current, and the first and second timestamps.
摘要翻译：一种包括收发器的系统，其在第一设备中并且无线地或通过电力线和从第二设备接收，（i）在电源的母线之间检测到的电压的电压值，其中电源向负载和负载与第一和第二装置不同的位置，或（ii）由电流传感器检测并由负载从电源抽出的电流的当前值。一种感测模块，其特征在于，（i）如果收发器接收到电流，则以第一时间戳检测电压和时间戳电压值，以及（ii）如果收发器接收到电压，则确定当前值和第二时间戳时间戳。参数模块基于电压，电流以及第一和第二时间戳来确定负载的参数。

17. 发明申请

US20140159493A1 MULTIPLE UPS SYSTEM HAVING MULTI-WAY POWER TIE SYSTEM AND INTELLIGENT POWER SHARING CONTROL 有权
标题翻译：具有多路电源系统和智能电源共享控制的多UPS系统
公开(公告)号：US20140159493A1
公开(公告)日：2014-06-12
申请号：US14078790
申请日：2013-11-13
申请人： Liebert Corporation
发明人： Xian CHEN , Brian P. HEBER
IPC分类号： H02J4/00
CPC分类号： H02J9/062 , Y10T307/62
摘要： A multiple UPS system includes a plurality of multi-module UPS subsystems coupled to a power tie cabinet, each multi-module UPS subsystem having a plurality of UPS modules. The power tie cabinet includes one or more controllers, collectively referred to as PTC (power tie cabinet) controls. The PTC controls periodically determine a power error message for each of the multi-module UPS subsystems and pass it to the respective multi-module UPS subsystem. A controller of the multi-module UPS subsystem uses the power error message to determine error data that is provided to a power average control loop used in control of power sharing among the UPS modules of the multi-module UPS subsystem.
摘要翻译：多个UPS系统包括多个耦合到功率连接柜的多模块UPS子系统，每个多模块UPS子系统具有多个UPS模块。电源柜包括一个或多个控制器，统称为PTC（电源柜）控制器。 PTC控制器周期性地确定每个多模块UPS子系统的功率错误消息，并将其传递到相应的多模块UPS子系统。多模块UPS子系统的控制器使用功率错误消息来确定提供给用于控制多模块UPS子系统的UPS模块之间的功率共享的功率平均控制回路的误差数据。

18. 发明申请

US20140139022A1 Systems And Methods For Balancing UPS Output Voltages During Transitions Between Operating Modes 有权
标题翻译：用于在运行模式之间平衡UPS输出电压的系统和方法
公开(公告)号：US20140139022A1
公开(公告)日：2014-05-22
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
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。

19. 发明申请

US20040160214A1 MODULAR UNINTERRUPTIBLE POWER SUPPLY 有权
标题翻译：模块式不间断电源
公开(公告)号：US20040160214A1
公开(公告)日：2004-08-19
申请号：US10708149
申请日：2004-02-11
申请人： LIEBERT CORPORATION
发明人： Charles F. Blair , Mark Gabel , Christopher Crawford , Dennis Weber , John R. Birchmeier , Brad Reinbolt
IPC分类号： H02J007/00
CPC分类号： H02J7/0026 , H02J7/0022 , H02J9/062 , H02J2007/005
摘要： A modular uninterruptible power supply is disclosed, which provides complete redundancy for all components required for UPS operation. Novel aspects of the invention include design of the modules and their interconnection and interoperability, as well as improved operation techniques applicable to UPS systems generally.
摘要翻译：公开了一种模块化不间断电源，为UPS操作所需的所有组件提供完整的冗余。本发明的新颖方面包括模块的设计及其互连和互操作性，以及一般适用于UPS系统的改进的操作技术。

20. 发明授权

US10637279B2 Method of mitigating effects of AC input voltage surge in a transformer-less rectifier uninterruptible power supply system 有权
公开(公告)号：US10637279B2
公开(公告)日：2020-04-28
申请号：US15880960
申请日：2018-01-26
申请人： Liebert Corporation
发明人： Brian P. Heber , Xian Chen
IPC分类号： H02H9/00 , H02J9/06 , H02H9/04 , H02M7/12 , H02M7/487 , H02M5/458
CPC分类号： H02J9/061 , H02H9/045 , H02M7/125 , H02M5/4585 , H02M7/487
摘要： Effects of a surge in an AC input voltage to a UPS is mitigated. If the AC input voltage is overvoltage, the rectifier is operated using a DC bus target voltage for the DC bus voltage unless the rectifier reaches its current limit. If the rectifier reaches its current limit, the DC bus target voltage is increased by a predetermined amount which is used as a current DC bus target voltage unless the increased DC bus target voltage exceeds a maximum DC bus voltage limit in which case the current DC bus target voltage is set to the maximum DC bus voltage limit. The rectifier is then operated using the current DC bus target voltage until it reaches its current limit or the AC input voltage surge has passed. If the rectifier again reaches its current limit, the above steps starting with increasing the DC bus target voltage are repeated.

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