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。

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

IPC分类号： H02M5/40 ,  H02M7/10

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。

公开(公告)号：US20080265681A1

公开(公告)日：2008-10-30

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 ,  Jason S. Anderson

发明人： Hans-Erik Pfitzer ,  Rune Lennart Jonsson ,  John G. Tracy ,  Miguel E. Chavez ,  Frederick Tassitino ,  Jason S. Anderson

IPC分类号： H02J9/06

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。

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

IPC分类号： H02M7/44 ,  H02M7/155

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。

公开(公告)号：US20050243488A1

公开(公告)日：2005-11-03

申请号：US10834696

申请日：2004-04-29

申请人： John Tracy ,  Hans-Erik Pfitzer ,  Keith Bauman

发明人： John Tracy ,  Hans-Erik Pfitzer ,  Keith Bauman

IPC分类号： H02M7/219 ,  H02H3/18

CPC分类号： H02M7/219

摘要： In a power converter apparatus, such as an uniterruptible 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： 在诸如单元可逆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。

公开(公告)号：US09190871B2

公开(公告)日：2015-11-17

申请号：US13479867

申请日：2012-05-24

申请人： Hans-Erik Pfitzer

发明人： Hans-Erik Pfitzer

IPC分类号： H02J3/44 ,  H01H47/00 ,  H02J9/06 ,  H01H21/24 ,  H02J3/38

CPC分类号： H02J9/06 ,  H01H21/24 ,  H02J3/383 ,  H02J3/386 ,  H02J2003/388 ,  Y02B10/72 ,  Y02E10/563 ,  Y02E10/566 ,  Y02E10/763 ,  Y10T307/391 ,  Y10T307/696 ,  Y10T307/76

摘要： A switching assembly includes a first terminal and a second terminal, and a contactor connected to the first terminal, where the contactor includes a relay switch and a coil. The switching assembly further includes a first switch connected to the second terminal, and a rectifier bridge connected in series between the contactor and the first switch. The switching assembly also includes a control unit configured to selectively apply a control signal to the coil to cause the relay switch to open or close based on a voltage measured at the first terminal or based on a voltage drop measured across the rectifier bridge.

摘要翻译： 开关组件包括第一端子和第二端子，以及连接到第一端子的接触器，其中接触器包括继电器开关和线圈。 开关组件还包括连接到第二端子的第一开关和串联连接在接触器和第一开关之间的整流桥。 开关组件还包括控制单元，该控制单元被配置为基于在第一端子处测量的电压或基于整流桥两端测量的电压降来选择性地向线圈施加控制信号以使继电器开关断开或闭合。

公开(公告)号：US20120250205A1

公开(公告)日：2012-10-04

申请号：US13402348

申请日：2012-02-22

申请人： Hans-Erik Pfitzer ,  Martin William Guy

发明人： Hans-Erik Pfitzer ,  Martin William Guy

IPC分类号： H02H9/04

CPC分类号： H02H9/041

摘要： A surge protective device is disclosed that may include a comparator to determine when a line voltage of a line is above a threshold. The device may include a switch to couple a clamping device to the line voltage when the comparator determines the line voltage is above a threshold, wherein the clamping device shunts current from the line. The switch may include a silicon-controlled rectifier (SCR) or a thyristor and the clamping device may include a selenium surge suppression device.

摘要翻译： 公开了一种浪涌保护装置，其可包括比较器，用于确定线路的线路电压何时高于阈值。 当比较器确定线路电压高于阈值时，该装置可以包括用于将钳位装置耦合到线路电压的开关，其中钳位装置从线路分流电流。 开关可以包括硅可控整流器（SCR）或晶闸管，并且钳位装置可以包括硒浪涌抑制装置。

公开(公告)号：US20050162137A1

公开(公告)日：2005-07-28

申请号：US10763962

申请日：2004-01-23

申请人： John Tracy ,  Hans-Erik Pfitzer

发明人： John Tracy ,  Hans-Erik Pfitzer

IPC分类号： H02J9/06 ,  H02M5/458 ,  H02M7/5387 ,  G05F1/00

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。

公开(公告)号：US07800924B2

公开(公告)日：2010-09-21

申请号：US11691718

申请日：2007-03-27

申请人： George W. Oughton, Jr. ,  Hans-Erik Pfitzer

发明人： George W. Oughton, Jr. ,  Hans-Erik Pfitzer

IPC分类号： H02M5/42 ,  H02M5/44

CPC分类号： H02M5/4585 ,  H02M7/493 ,  H02M2001/123

摘要： A power converter apparatus, such as an uninterruptible power supply (UPS), includes an inverter having an input coupled to a first DC bus and a second DC bus and configured to generate an AC output with respect to a neutral terminal at a phase output terminal thereof. The apparatus further includes first and second neutral coupling circuits, each configured to selectively couple the first DC bus and the second DC bus to the neutral terminal, and a control circuit configured to cause interleaved operation of the neutral coupling circuits.

摘要翻译： 诸如不间断电源（UPS）的电力转换装置包括具有耦合到第一DC总线和第二DC总线的输入的反相器，并且被配置为在相位输出端子处产生相对于中性点的AC输出 其中。 该装置还包括第一和第二中性点耦合电路，每一个被配置为将第一DC总线和第二DC总线选择性地耦合到中立端子;以及控制电路，被配置为引起中性点耦合电路的交错运算。

公开(公告)号：US20050286274A1

公开(公告)日：2005-12-29

申请号：US10879441

申请日：2004-06-29

申请人： Hans-Erik Pfitzer ,  Rune Jonsson ,  John Tracy ,  Miguel Chavez ,  Frederick Tassitino ,  Jason Anderson

发明人： Hans-Erik Pfitzer ,  Rune Jonsson ,  John Tracy ,  Miguel Chavez ,  Frederick Tassitino ,  Jason Anderson

IPC分类号： G01R31/40 ,  H02J9/06 ,  H02M5/45

CPC分类号： H02J9/062 ,  G01R31/40 ,  Y02P80/11 ,  Y10T307/62

摘要： A power supply apparatus, such as an on-line UPS, includes an AC/DC converter circuit having an input configured to be coupled to an AC source, a DC/AC converter circuit having an input coupled to an output of the AC/DC converter circuit by a DC link, and a bypass circuit operative to couple and decouple the output of the DC/AC converter circuit to and from the input of the AC/DC converter circuit. Power is transferred from the output of DC/AC converter circuit via the bypass circuit to conduct a test of the apparatus, such as a factory or field load test. For example, power may be circulated around a loop including the AC/DC converter circuit, the DC/AC converter circuit and the bypass circuit to conduct the test in order to test these components under load. A status of such components may be determined responsive to the test. In further embodiments, such components may be calibrated responsive to the test.

摘要翻译： 诸如在线UPS的电源设备包括具有被配置为耦合到AC电源的输入的AC / DC转换器电路，具有耦合到AC / DC的输出的输入的DC / AC转换器电路 转换器电路以及用于将DC / AC转换器电路的输出与AC / DC转换器电路的输入耦合和去耦的旁路电路。 电源通过旁路电路从DC / AC转换器电路的输出传输，以对设备进行测试，如工厂或现场负载测试。 例如，可以在包括AC / DC转换器电路，DC / AC转换器电路和旁路电路的回路周围循环电力以进行测试，以便在负载下测试这些组件。 可以响应于测试来确定这些组件的状态。 在另外的实施例中，响应于测试可以校准这些部件。