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公开(公告)号：US20070210652A1
公开(公告)日：2007-09-13
申请号：US11561663
申请日：2006-11-20
申请人： John G. Tracy , Frederick Tassitino
发明人： John G. Tracy , Frederick Tassitino
IPC分类号： H02J9/00
CPC分类号： H02J9/06 , H02J3/38 , H02J9/062 , H02M7/493 , H02M2007/4822 , Y10T307/615 , Y10T307/62 , Y10T307/625 , Y10T307/696
摘要： An uninterruptible power supply (UPS) system includes at least three UPSs configured to be connected in parallel to a common load. The system further includes control circuitry configured to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs. In this manner, a nested redundancy may be provided.
摘要翻译： 不间断电源（UPS）系统包括至少三个UPS，其被配置为并联连接到公共负载。 该系统还包括控制电路，其被配置为在UPS之间支持至少两个冗余组，并且在至少一个UPS冗余组中支持至少两个冗余子组。 以这种方式，可以提供嵌套冗余。
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2.发明授权公开(公告)号：US07050312B2
公开(公告)日：2006-05-23
申请号：US10796647
申请日：2004-03-09
IPC分类号： H02M5/458
CPC分类号： H02J9/062 , H02M7/493 , H02M7/797 , H02M2007/4822 , Y10T307/625
摘要： An uninterruptible power supply apparatus includes a first bidirectional power converter circuit having first and second ports and a second bidirectional power converter circuit having first and second ports. The apparatus further includes a DC link that couples the second port of the first bidirectional power converter circuit to the first port of the second bidirectional power converter circuit. A first load port is coupled to the second port of the second bidirectional power converter circuit and a second load port is coupled to the first port of the first bidirectional power converter circuit. The apparatus further includes a control circuit that is configured to control the first and second bidirectional power converter circuits such that each of the first and second bidirectional power converter circuits can generate and/or condition AC power at each of the first and second load ports.
摘要翻译： 不间断电源装置包括具有第一和第二端口的第一双向功率转换器电路和具有第一和第二端口的第二双向功率转换器电路。 该装置还包括将第一双向功率转换器电路的第二端口耦合到第二双向功率转换器电路的第一端口的DC链路。 第一负载端口耦合到第二双向功率转换器电路的第二端口，并且第二负载端口耦合到第一双向功率转换器电路的第一端口。 该装置还包括控制电路，其被配置为控制第一和第二双向功率转换器电路，使得第一和第二双向功率转换器电路中的每一个可以在第一和第二负载端口中的每一个处产生和/或调节AC电力。
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公开(公告)号：US07088601B2
公开(公告)日：2006-08-08
申请号：US10763962
申请日：2004-01-23
申请人： John G. Tracy , Hans-Erik Pfitzer
发明人： John G. Tracy , Hans-Erik Pfitzer
CPC分类号： H02M5/4585 , H02J9/062 , H02M7/53873 , Y10T307/625
摘要： A power converter apparatus, such as a double-conversion or line-interactive UPS, includes first and second DC voltage busses and a polyphase DC to AC converter circuit coupled to the first and second DC voltage busses and operative to generate a polyphase AC output. The apparatus further includes a control circuit operatively associated with the polyphase DC to AC converter circuit and configured to shift a DC voltage range of the first and second DC voltage busses with respect to a reference voltage responsive to a relationship among phase components associated with the polyphase AC output. The components may include, for example, actual phase voltages or modulation commands (e.g., count values) from which the polyphase AC output is generated. The reference voltage may be a neutral voltage, e.g., a voltage of an actual neutral of a load receiving the AC output or a synthetic neutral voltage.
摘要翻译： 诸如双转换或线路交互式UPS的功率转换器装置包括第一和第二DC电压总线以及耦合到第一和第二DC电压总线的多相DC至AC转换器电路，并且可操作以产生多相AC输出。 该装置还包括与多相DC至AC转换器电路可操作地相关联的控制电路，并且被配置为响应于与多相相关的相位分量之间的关系而相对于参考电压移动第一和第二DC电压总线的DC电压范围 交流输出。 组件可以包括例如产生多相AC输出的实际相电压或调制命令（例如，计数值）。 参考电压可以是中性电压，例如接收AC输出的负载的实际中性点的电压或合成中性电压。
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4.发明授权Apparatus and methods for space-vector domain control in uninterruptible power supplies 有权用于不间断电源的空间矢量域控制的装置和方法公开(公告)号：US06201720B1
公开(公告)日：2001-03-13
申请号：US09507021
申请日：2000-02-18
IPC分类号： H02M744
CPC分类号： H02M7/53875 , H02J9/062 , H02M2007/53876
摘要： Uninterruptible power supplies (UPSs), power conversion apparatus and power conversion methods are provided which may improve phase regulation of polyphase AC voltages in the presence of load imbalances. According to one embodiment, a UPS includes a DC voltage generating circuit that produces a DC voltage. A space vector domain controlled inverter couples the DC voltage generating circuit to an AC load, and produces a polyphase AC output voltage at the load by sensing a plurality of voltages at the load, transforming the plurality of sensed voltages according to a space vector (d-q) transformation to produce an output space vector, generating an error space vector from the output space vector and a reference space vector, and selectively coupling the DC voltage generating circuit to the load responsive to the error space vector. In this manner, a voltage control loop is closed in the d-q domain, which may improve per-phase regulation of the polyphase AC output. Preferably, compensation is applied to the error space vector to produce a control space vector that compensates for poles or other transfer characteristics of the forward path of the voltage control loop. In another embodiment, the reference space vector is generated by an outer voltage amplitude loop that compares a sum of the plurality of output voltages at the load to a reference voltage amplitude, generating an error amplitude voltage which is compensated and then transformed according to a space vector transformation to produce the reference space vector that serves as the set point for the inner space vector domain control loop.
摘要翻译： 提供了不间断电源（UPS），电力转换装置和电力转换方法，可以在存在负载不平衡的情况下改善多相交流电压的相位调节。 根据一个实施例，UPS包括产生DC电压的DC电压产生电路。 空间矢量域控制的逆变器将直流电压产生电路耦合到交流负载，并且通过在负载下感测多个电压而在负载下产生多相交流输出电压，根据空间矢量（dq）变换多个感测电压 ）变换以产生输出空间矢量，从输出空间矢量和参考空间矢量生成误差空间矢量，并且响应于误差空间矢量选择性地将DC电压产生电路耦合到负载。 以这种方式，d-q域中的电压控制环闭合，这可以改善多相交流输出的每相调节。 优选地，对误差空间矢量进行补偿以产生补偿电压控制回路的正向通路的极点或其它传递特性的控制空间矢量。 在另一个实施例中，参考空间矢量由外部电压振幅回路产生，该外部电压振幅回路将负载时的多个输出电压的和与参考电压振幅进行比较，产生误差幅度电压，该电压被补偿然后根据空间进行变换 向量变换以产生用作内部空间矢量域控制环路的设定点的参考空间矢量。
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公开(公告)号：US5745356A
公开(公告)日：1998-04-28
申请号：US673602
申请日：1996-06-25
CPC分类号： H02M7/493 , H02J3/46 , H02J9/062 , Y10T307/414 , Y10T307/62
摘要： A parallel redundant power supply system which does not use any inter-unit signaling is obtained by using the AC output power level of a power system to coordinate load sharing. The necessary information for load sharing is derived solely from each power system's output power level in such a manner that the output of a power system is inherently phase locked to the output of other power systems to which it is connected in parallel. Each parallel connected power system designed in accordance with the invention includes means for generating an AC output voltage from a DC input power source, means for sampling either a DC input voltage from the DC input power source or the AC output voltage from the AC output voltage generating means to provide power level samples, and means for determining the AC output power of the AC output voltage generating means from the power level samples. A control signal is then generated and provided to the AC output voltage generating means to control the AC output phase and output frequency of the AC output voltage from the AC output voltage generating means based on the output power level of the AC output voltage generating means and a derivative of the output power level of the AC output voltage generating means so as to affect load sharing in a manner proportional to a unit power rating of the power system with other power systems to which the power system is connected in parallel without requiring inter-unit signaling between the power systems. Generally, the control signal is determined by integrating the derivative of the output power level of the AC output voltage generating means as determined from the power level samples.
摘要翻译： 通过使用电力系统的交流输出功率电平来协调负载共享，可以获得不使用任何单位间信令的并联冗余电源系统。 用于负载共享的必要信息仅来自于每个电力系统的输出功率电平，使得电力系统的输出固有地相位锁定到其并联连接的其他电力系统的输出。 根据本发明设计的每个并联的电力系统包括用于从DC输入电源产生AC输出电压的装置，用于从DC输入电源采样DC输入电压或来自AC输出电压的AC输出电压 用于提供功率电平采样的发电装置，以及用于从功率电平采样确定AC输出电压产生装置的AC输出功率的装置。 然后产生控制信号并将其提供给AC输出电压发生装置，以基于AC输出电压产生装置的输出功率电平来控制来自AC输出电压产生装置的AC输出电压的AC输出相位和输出频率，以及 交流输出电压产生装置的输出功率电平的导数，以便以与电力系统并联连接的其它电力系统的电力系统的单位额定功率成比例的方式影响负载共享， 电力系统之间的单位信号。 通常，通过对从功率电平采样确定的AC输出电压产生装置的输出功率电平的导数进行积分来确定控制信号。
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公开(公告)号：US5745355A
公开(公告)日：1998-04-28
申请号：US669940
申请日：1996-06-25
摘要： A parallel redundant power supply system which does not use any inter-unit signaling is obtained by deriving all information necessary for a robust selective trip regime from the output signals of each respective power system. Each respective power system monitors its own power output and keeps a running average of its own performance to determine whether it is operating properly, rather than comparing itself to other units. The trip function is created by sampling the AC output voltage of the power system and multiplying an instantaneous difference in voltage (compared with a previous cycle) with the instantaneous difference in current (also compared with a previous cycle) of the power system's AC output power. If the two transients are in opposite directions, then the multiplicative product will be negative and indicative of a good power system. On the other hand, if the two transients are in the same direction, then the multiplicative product will be positive and indicative of a failed unit. The power system is removed from the power circuit when the multiplicative product is positive and greater than a predetermined trip value. The same technique may be used for self-monitoring of a single power supply connected to a load.
摘要翻译： 不使用任何单位间信令的并行冗余电源系统通过从每个相应的电力系统的输出信号导出鲁棒选择性跳闸状态所需的所有信息来获得。 每个相应的电力系统监控其自身的功率输出，并保持其自身性能的运行平均值，以确定其是否正常工作，而不是将其与其他单元进行比较。 跳闸功能是通过对电力系统的交流输出电压进行采样并将瞬时电压差（与上一个周期相比）与电力系统的交流输出功率的瞬时电流差（也与上一个周期相比）相乘创建的 。 如果两个瞬变是相反的方向，则乘法乘积将为负值，并表示良好的电力系统。 另一方面，如果两个瞬变是相同的方向，那么乘法乘积将是正的并且指示失败的单位。 当乘法乘积为正并且大于预定跳闸值时，电力系统从电源电路移除。 相同的技术可以用于连接到负载的单个电源的自我监测。
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公开(公告)号：US4673825A
公开(公告)日：1987-06-16
申请号：US702313
申请日：1985-02-15
CPC分类号： H02J9/062 , Y10T307/625 , Y10T307/735
摘要： An uninterruptible power supply including a transformer having a first input winding normally coupling an inverter AC source with a critical AC load, which transformer also includes a second input winding operable to supply power from a bypass source to the load in the event of malfunction of the inverter circuit. The inverter is of the four-quadrant pulse-width-modulated type, thereby to permit recharging of the battery which serves as the DC source to the inverter. An inductance is provided for varying the phase relationship between a utility voltage source and the inverter voltage to produce minimum real inverter current and the "break-even" operating conduction, and a step-up device is provided for increasing the utility voltage to further minimize the break-even inverter current required during normal operation, and to maximize the through-put efficiency.
摘要翻译： 一种不间断电源，包括具有通常将逆变器AC源与临界AC负载耦合的第一输入绕组的变压器，该变压器还包括第二输入绕组，其可操作以在发生故障的情况下从旁路源向负载供电 逆变电路。 逆变器是四象限的脉冲宽度调制型，从而允许将作为直流电源的电池充电到逆变器。 提供电感以改变公用电压源和逆变器电压之间的相位关系，以产生最小的实际逆变器电流和“平衡”操作导通，并且提供升压装置以增加电力电压以进一步最小化 在正常运行期间需要的稳定的逆变器电流，并最大限度地提高吞吐效率。
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公开(公告)号：US07638899B2
公开(公告)日：2009-12-29
申请号：US11561663
申请日：2006-11-20
IPC分类号： H02J9/00
CPC分类号： H02J9/06 , H02J3/38 , H02J9/062 , H02M7/493 , H02M2007/4822 , Y10T307/615 , Y10T307/62 , Y10T307/625 , Y10T307/696
摘要： An uninterruptible power supply (UPS) system includes at least three UPSs configured to be connected in parallel to a common load. The system further includes control circuitry configured to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs. In this manner, a nested redundancy may be provided.
摘要翻译： 不间断电源（UPS）系统包括至少三个UPS，其被配置为并联连接到公共负载。 该系统还包括控制电路，其被配置为在UPS之间支持至少两个冗余组，并且在至少一个UPS冗余组中支持至少两个冗余子组。 以这种方式，可以提供嵌套冗余。
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9.发明授权Power converter apparatus and methods using a phase reference derived from a DC bus voltage 有权使用从直流总线电压得到的相位基准的电力变换装置和方法公开(公告)号：US07561451B2
公开(公告)日：2009-07-14
申请号：US10834696
申请日：2004-04-29
申请人： John G. Tracy , Hans-Erik Pfitzer , Keith Bauman
发明人： John G. Tracy , Hans-Erik Pfitzer , Keith Bauman
IPC分类号： H02M7/04 , H02M5/42 , H02M5/40 , H02M3/36 , H02M5/45 , H02M1/12 , H02M1/14 , G05F5/00 , G05F1/00 , H02J3/12
CPC分类号： H02M7/219
摘要： In a power converter apparatus, such as an uninterruptible power supply, a phase reference signal is generated responsive to a DC voltage on a DC bus. A magnitude reference signal may be generated responsive to a phase current of an AC bus and/or the DC voltage on the DC bus. Power is transferred between the AC and DC busses responsive to the phase reference signal and the magnitude reference signal. Generation of the phase reference signal may include generating a DC voltage error signal responsive to the DC voltage on the DC bus, generating a phase offset signal responsive to the DC voltage error signal, and generating the phase reference signal responsive to the phase offset signal. Generation of the magnitude reference signal may include generating a volt-amperes reactive (VAR) error signal responsive to the phase current and generating the magnitude reference signal responsive to the VAR error signal.
摘要翻译： 在诸如不间断电源的功率转换器装置中，响应于DC总线上的DC电压产生相位参考信号。 响应于AC总线的相电流和/或DC总线上的DC电压，可产生幅度参考信号。 响应于相位参考信号和幅度参考信号，在AC和DC总线之间传输功率。 相位参考信号的产生可以包括响应于DC总线上的DC电压产生DC电压误差信号，产生响应于DC电压误差信号的相位偏移信号，以及响应于相位偏移信号产生相位参考信号。 幅度参考信号的产生可以包括响应于相电流产生伏特无功（VAR）误差信号，并响应于VAR误差信号产生幅度参考信号。
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10.发明授权公开(公告)号：US07948778B2
公开(公告)日：2011-05-24
申请号：US12136160
申请日：2008-06-10
申请人： Hans-Erik Pfitzer , Rune Lennart Jonsson , John G. Tracy , Miguel E. Chavez , Frederick Tassitino, Jr. , Jason S. Anderson
发明人： Hans-Erik Pfitzer , Rune Lennart Jonsson , John G. Tracy , Miguel E. Chavez , Frederick Tassitino, Jr. , Jason S. Anderson
CPC分类号： H02J9/062 , G01R31/40 , Y02P80/11 , Y10T307/62
摘要： A power supply apparatus includes first and second parallel-connected uninterruptible power supplies (UPSs), each including an AC/DC converter circuit and a DC/AC converter circuit having an input coupled to an output of the AC/DC converter circuit by a DC link, inputs of the AC/DC converter circuits of the first and second UPSs connected in common to an AC source and outputs of the DC/AC converter circuits of the first and second UPSs connected in common to a load. The first and second UPSs are configured to support a test mode wherein the first UPS is test loaded by transferring power from the output of the DC/AC converter circuit of the first UPS to the output of the DC/AC converter circuit of the second UPS. The first UPS may be configured to provide power to the load concurrent with test loading by the second UPS.
摘要翻译： 电源装置包括第一和第二并联不间断电源（UPS），每个电源包括AC / DC转换器电路和DC / AC转换器电路，其具有通过DC连接到AC / DC转换器电路的输出的输入 链路，共同连接到AC电源的第一和第二UPS的AC / DC转换器电路的输入以及共同连接到负载的第一和第二UPS的DC / AC转换器电路的输出。 第一和第二UPS被配置为支持测试模式，其中通过将功率从第一UPS的DC / AC转换器电路的输出传送到第二UPS的DC / AC转换器电路的输出来测试第一UPS 。 第一个UPS可以配置为向负载提供电力，同时由第二个UPS进行测试加载。
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