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公开(公告)号：US07400066B2
公开(公告)日：2008-07-15
申请号：US10874713
申请日：2004-06-23
IPC分类号： H02J1/12
CPC分类号： H02J9/062 , H02J2009/068 , Y10T307/516
摘要： Status of a bypass source of parallel-connected UPSs is determined from a load share when a loading of the parallel-connected UPSs meets a predetermined criterion. Status of a bypass source of the parallel-connected UPSs is determined from a bypass source voltage when the loading of the parallel-connected UPSs fails to meet the predetermined criterion. The loading may include an aggregate loading, and failure of a bypass source of a UPS may be identified responsive to detecting that a load share of the UPS is less than a predetermined proportion of the aggregate loading. Alternatively, failure of the bypass source may be identified by detecting that a bypass voltage fails to meet a predetermined criterion. Bypass circuits of the UPSs may be controlled responsive to a load share and/or a bypass source voltage.
摘要翻译： 并联UPS的旁路源的状态由并联UPS的负载满足预定标准时的负载分担决定。 当并联UPS的负载不能达到预定标准时，并联UPS的旁路源的状态由旁路电源电压确定。 装载可以包括总装载，并且可以响应于检测到UPS的负载份额小于集合装载的预定比例来识别UPS的旁路源的故障。 或者，可以通过检测旁路电压不能满足预定标准来识别旁路源的故障。 可以响应于负载共享和/或旁路源电压来控制UPS的旁路电路。
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2.发明申请AC power supply apparatus, methods and computer program products using PWM synchronization 失效交流电源装置，使用PWM同步的方法和计算机程序产品公开(公告)号：US20060006741A1
公开(公告)日：2006-01-12
申请号：US10886483
申请日：2004-07-07
IPC分类号： H02J1/00
CPC分类号： H02M7/493 , H02J9/062 , Y10T307/511 , Y10T307/707
摘要： Paralleled uninterruptible power supplies (UPSs) including respective pulse-width modulation (PWM) power converter circuits coupled in common to an AC load bus have PWM cycles that are synchronized. In particular, sampling of control inputs of the PWM power converter circuits may be synchronized, such that, for example, sampling of control inputs to the PWM power converter circuits occurs at substantially the same time for each of the PWM power converter circuits. A common phase reference corresponding to an AC voltage phase for the AC load bus may be provided, and the PWM cycles of each of the power converter circuits may synchronized, e.g., phase locked, to the common phase reference. More particularly, the respective PWM cycles of the UPSs may be phase locked to phase locked sinusoidal reference signals generated at each of the UPSs. Sampling for other control functions may also be synchronized to the PWM cycles.
摘要翻译： 并联的不间断电源（UPS）包括共同耦合到交流负载总线的相应脉冲宽度调制（PWM）功率转换器电路，具有同步的PWM周期。 特别地，PWM功率转换器电路的控制输入的采样可以被同步，使得例如对于PWM功率转换器电路的PWM功率转换器电路的控制输入的采样基本上是相同的。 可以提供对应于用于AC负载总线的AC电压相位的公共相位基准，并且每个功率转换器电路的PWM周期可以同步（例如锁相）到公共相位基准。 更具体地，UPS的相应PWM周期可以被锁相到在每个UPS处产生的锁相正弦参考信号。 其他控制功能的采样也可以与PWM周期同步。
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公开(公告)号：US20050288826A1
公开(公告)日：2005-12-29
申请号：US10874713
申请日：2004-06-23
CPC分类号： H02J9/062 , H02J2009/068 , Y10T307/516
摘要： Status of a bypass source of parallel-connected UPSs is determined from a load share when a loading of the parallel-connected UPSs meets a predetermined criterion. Status of a bypass source of the parallel-connected UPSs is determined from a bypass source voltage when the loading of the parallel-connected UPSs fails to meet the predetermined criterion. The loading may include an aggregate loading, and failure of a bypass source of a UPS may be identified responsive to detecting that a load share of the UPS is less than a predetermined proportion of the aggregate loading. Alternatively, failure of the bypass source may be identified by detecting that a bypass voltage fails to meet a predetermined criterion. Bypass circuits of the UPSs may be controlled responsive to a load share and/or a bypass source voltage.
摘要翻译： 并联UPS的旁路源的状态由并联UPS的负载满足预定标准时的负载分担决定。 当并联UPS的负载不能达到预定标准时，并联UPS的旁路源的状态由旁路电源电压确定。 装载可以包括总装载，并且可以响应于检测到UPS的负载份额小于集合装载的预定比例来识别UPS的旁路源的故障。 或者，可以通过检测旁路电压不能满足预定标准来识别旁路源的故障。 可以响应于负载共享和/或旁路源电压来控制UPS的旁路电路。
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4.发明授权AC power supply apparatus, methods and computer program products using PWM synchronization 失效交流电源装置，使用PWM同步的方法和计算机程序产品公开(公告)号：US07405494B2
公开(公告)日：2008-07-29
申请号：US10886483
申请日：2004-07-07
IPC分类号： H02J1/12
CPC分类号： H02M7/493 , H02J9/062 , Y10T307/511 , Y10T307/707
摘要： Paralleled uninterruptible power supplies (UPSs) including respective pulse-width modulation (PWM) power converter circuits coupled in common to an AC load bus have PWM cycles that are synchronized. In particular, sampling of control inputs of the PWM power converter circuits may be synchronized, such that, for example, sampling of control inputs to the PWM power converter circuits occurs at substantially the same time for each of the PWM power converter circuits. A common phase reference corresponding to an AC voltage phase for the AC load bus may be provided, and the PWM cycles of each of the power converter circuits may synchronized, e.g., phase locked, to the common phase reference. More particularly, the respective PWM cycles of the UPSs may be phase locked to phase locked sinusoidal reference signals generated at each of the UPSs. Sampling for other control functions may also be synchronized to the PWM cycles.
摘要翻译： 并联的不间断电源（UPS）包括共同耦合到交流负载总线的相应脉冲宽度调制（PWM）功率转换器电路，具有同步的PWM周期。 特别地，PWM功率转换器电路的控制输入的采样可以被同步，使得例如对于PWM功率转换器电路的PWM功率转换器电路的控制输入的采样基本上是相同的。 可以提供对应于用于AC负载总线的AC电压相位的公共相位基准，并且每个功率转换器电路的PWM周期可以同步（例如锁相）到公共相位基准。 更具体地，UPS的相应PWM周期可以被锁相到在每个UPS处产生的锁相正弦参考信号。 其他控制功能的采样也可以与PWM周期同步。
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