-
公开(公告)号：US07755333B2
公开(公告)日：2010-07-13
申请号：US12149655
申请日：2008-05-06
CPC分类号： H02J3/1821 , G05F1/70 , H02J3/1864 , Y02E40/12
摘要： A SVC control section detects a bus voltage from an instrument transformer, and adjusts reactive power generated by a SVC according to the detected bus voltage. A cooperative control section generates a control command for controlling the interconnection and parallel-off of a phase lead capacitor and a phase lag reactor on the basis of the amount of reactive power generated by the SVC and the bus voltage detected by the instrument transformer and a voltage sensor. A voltage comparator compares the bus voltage with a predetermined threshold voltage set to a voltage lower than a lower limit value of a steady state fluctuation range of the bus voltage and outputs the comparison result to a circuit breaker control section. When the bus voltage is lower than the threshold voltage, the circuit breaker control section locks the control command from the cooperative control section.
摘要翻译： SVC控制部分检测仪表变压器的总线电压，根据检测到的总线电压调整SVC产生的无功功率。 合作控制部分根据由SVC产生的无功功率和由仪表变压器检测到的总线电压产生用于控制相位超前电容器和相位滞后电抗器的互连和并联的控制命令， 电压传感器 电压比较器将总线电压与设定为低于总线电压的稳态波动范围的下限值的电压设定的预定阈值电压进行比较，并将比较结果输出到断路器控制部。 当总线电压低于阈值电压时，断路器控制部分锁定来自协同控制部分的控制命令。
-
公开(公告)号：US07692415B2
公开(公告)日：2010-04-06
申请号：US11797077
申请日：2007-04-30
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02J3/1864 , Y02E40/12
摘要： A reactive power control apparatus for an AC power system includes a reactive power compensation device, a compensation capacitor device and a compensation capacitor control device. The compensation capacitor control device includes a detection voltage output circuit which outputs a bus detection voltage after the clearing of a voltage drop abnormality, corresponding to the AC voltage of a system bus after the voltage drop abnormality that occurred in the AC power system has been cleared, and a compensation capacitor control circuit which controls the connection status of a compensation capacitor with respect to the system bus. The compensation capacitor control circuit controls the connection status of the compensation capacitor with respect to the system bus, on the basis of the voltage level of the bus detection voltage after the clearing of the voltage drop abnormality.
摘要翻译： 一种用于交流电力系统的无功功率控制装置，包括无功补偿装置，补偿电容器装置和补偿电容器控制装置。 补偿电容器控制装置包括检测电压输出电路，其在清除电压降异常之后输出对应于在AC电力系统中发生的电压降异常之后的系统总线的AC电压已经被清除的总线检测电压 以及补偿电容器控制电路，其控制补偿电容器相对于系统总线的连接状态。 补偿电容器控制电路根据总线检测电压在清除电压降异常之后的电压电平来控制补偿电容器相对于系统总线的连接状态。
-
公开(公告)号：US20080150496A1
公开(公告)日：2008-06-26
申请号：US11797077
申请日：2007-04-30
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02J3/1864 , Y02E40/12
摘要： A reactive power control apparatus for an AC power system includes a reactive power compensation device, a compensation capacitor device and a compensation capacitor control device. The compensation capacitor control device includes a detection voltage output circuit which outputs a bus detection voltage after the clearing of a voltage drop abnormality, corresponding to the AC voltage of a system bus after the voltage drop abnormality that occurred in the AC power system has been cleared, and a compensation capacitor control circuit which controls the connection status of a compensation capacitor with respect to the system bus. The compensation capacitor control circuit controls the connection status of the compensation capacitor with respect to the system bus, on the basis of the voltage level of the bus detection voltage after the clearing of the voltage drop abnormality.
摘要翻译： 一种用于交流电力系统的无功功率控制装置，包括无功补偿装置，补偿电容器装置和补偿电容器控制装置。 补偿电容器控制装置包括检测电压输出电路，其在清除电压降异常之后输出对应于在AC电力系统中发生的电压降异常之后的系统总线的AC电压已经被清除的总线检测电压 以及补偿电容器控制电路，其控制补偿电容器相对于系统总线的连接状态。 补偿电容器控制电路根据总线检测电压在清除电压降异常之后的电压电平来控制补偿电容器相对于系统总线的连接状态。
-
公开(公告)号：US20090128100A1
公开(公告)日：2009-05-21
申请号：US12149655
申请日：2008-05-06
CPC分类号： H02J3/1821 , G05F1/70 , H02J3/1864 , Y02E40/12
摘要： A SVC control section detects a bus voltage from an instrument transformer, and adjusts reactive power generated by a SVC according to the detected bus voltage. A cooperative control section generates a control command for controlling the interconnection and parallel-off of a phase lead capacitor and a phase lag reactor on the basis of the amount of reactive power generated by the SVC and the bus voltage detected by the instrument transformer and a voltage sensor. A voltage comparator compares the bus voltage with a predetermined threshold voltage set to a voltage lower than a lower limit value of a steady state fluctuation range of the bus voltage and outputs the comparison result to a circuit breaker control section. When the bus voltage is lower than the threshold voltage, the circuit breaker control section locks the control command from the cooperative control section.
摘要翻译： SVC控制部分检测仪表变压器的总线电压，根据检测到的总线电压调整SVC产生的无功功率。 合作控制部分根据由SVC产生的无功功率和由仪表变压器检测到的总线电压产生用于控制相位超前电容器和相位滞后电抗器的互连和并联的控制指令，以及 电压传感器 电压比较器将总线电压与设定为低于总线电压的稳态波动范围的下限值的电压设定的预定阈值电压进行比较，并将比较结果输出到断路器控制部。 当总线电压低于阈值电压时，断路器控制部分锁定来自协同控制部分的控制命令。
-
5.发明授权Inverter apparatus with control and voltage-sag circuitry to quickly restart when recovering from a mini power failure 有权具有控制和电压骤降电路的逆变器装置在从微型电源故障中恢复时能够快速重启公开(公告)号：US08154890B2
公开(公告)日：2012-04-10
申请号：US12484474
申请日：2009-06-15
CPC分类号： H02M1/32 , H02M1/36 , H02M2001/322
摘要： An inverter apparatus converts a DC power of a capacitor charged via a rectifier circuit connected to a first AC power system into an AC power, and supplies the AC power to a second AC power system. The inverter apparatus includes a discharge circuit, a control circuit, a trigger circuit, a first voltage-sag detection circuit, a control power circuit, and a second voltage-sag detection circuit. When the second voltage-sag detection circuit detects a voltage sag of the control power circuit below a threshold, the trigger circuit generates a discharge command signal for causing the discharge circuit to discharge a charge from the capacitor.
摘要翻译： 逆变器装置将经由与第一交流电力系统连接的整流电路充电的电容器的直流电力变换为交流电力，并将交流电力提供给第二交流电力系统。 逆变器装置包括放电电路，控制电路，触发电路，第一电压骤降检测电路，控制电路电路和第二电压骤降检测电路。 当第二电压骤降检测电路检测到控制电力电路的电压下降低于阈值时，触发电路产生用于使放电电路从电容器放电的放电指令信号。
-
公开(公告)号：US20120247749A1
公开(公告)日：2012-10-04
申请号：US13182714
申请日：2011-07-14
申请人： Nobuki SHIMOKAJI , Masahisa Asaoka , Hitoshi Teramoto , Shinichi Ogusa , Kazuyuki Muto , Michihiro Tadokoro
发明人： Nobuki SHIMOKAJI , Masahisa Asaoka , Hitoshi Teramoto , Shinichi Ogusa , Kazuyuki Muto , Michihiro Tadokoro
IPC分类号： F25B29/00
CPC分类号： F25D17/02 , F25D21/04 , F25D2400/02
摘要： An objective is to prevent excessive temperature decrease of cooling water and to reduce energy loss by a heater.A water-cooled electrical apparatus includes an electrical device 2 placed indoors, a pump 3 for circulating cooling water for cooling the electrical device, a cooler 5, placed outdoors, for cooling the cooling water, a heater 6 for heating the cooling water, and a main pipe 4 forming a closed loop so that the cooling water circulates through the electrical device, the pump, the cooler, and the heater.The water-cooled electrical apparatus further includes a bypass pipe 11 bypassing between bifurcations 9 and 10, provided at inlet and outlet sides of the cooler, for flow-dividing the cooling water, and at least one of a first flow amount control valve 7 provided along the main pipe between the bifurcations, and a second flow amount control valve 12 provided along the bypass pipe.
摘要翻译： 目的是防止冷却水过度降温，减少加热器的能量损失。 水冷式电气设备包括放置在室内的电气设备2，用于循环用于冷却电气设备的冷却水的泵3，放置在户外的用于冷却冷却水的冷却器5，用于加热冷却水的加热器6，以及 形成闭环的主管4，使得冷却水通过电气装置，泵，冷却器和加热器循环。 水冷式电气设备还包括旁路管11，旁路管11在分岔9和10之间设置，设置在冷却器的入口侧和出口侧，用于分流冷却水，以及提供的第一流量控制阀7中的至少一个 沿着分支之间的主管，以及沿着旁通管设置的第二流量控制阀12。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.016 秒)