-
公开(公告)号：US20080253040A1
公开(公告)日：2008-10-16
申请号：US11735673
申请日：2007-04-16
IPC分类号： B23K9/23
摘要： A plasma gun with two gap electrodes on opposite ends of a chamber of ablative material such as an ablative polymer. The gun ejects an ablative plasma at supersonic speed. A divergent nozzle spreads the plasma jet to fill a gap between electrodes of a main arc device, such as an arc crowbar or a high voltage power switch. The plasma triggers the main arc device by lowering the impedance of the main arc gap via the ablative plasma to provide a conductive path between the main electrodes. This provides faster triggering and requires less trigger energy than previous arc triggers. It also provides a more conductive initial main arc than previously possible. The initial properties of the main arc are controllable by the plasma properties, which are in turn controllable by design parameters of the ablative plasma gun.
摘要翻译： 等离子体枪，具有两个间隙电极，位于烧蚀材料室（例如可消融聚合物）的相对两端。 枪以超音速弹出烧蚀等离子体。 扩散喷嘴扩展等离子体射流以填充主弧装置的电极之间的间隙，例如电弧撬棒或高压电源开关。 等离子体通过消融等离子体降低主电弧间隙的阻抗来触发主电弧装置，以在主电极之间提供导电路径。 这提供了更快的触发，并且比以前的电弧触发要求更少的触发能量。 它还提供比以前更可能的更导电的初始主弧。 主弧的初始特性可以通过等离子体性质来控制，这些等离子体性质又可由烧蚀等离子枪的设计参数控制。
-
公开(公告)号：US08742282B2
公开(公告)日：2014-06-03
申请号：US11735673
申请日：2007-04-16
摘要： A plasma gun with two gap electrodes on opposite ends of a chamber of ablative material such as an ablative polymer. The gun ejects an ablative plasma at supersonic speed. A divergent nozzle spreads the plasma jet to fill a gap between electrodes of a main arc device, such as an arc crowbar or a high voltage power switch. The plasma triggers the main arc device by lowering the impedance of the main arc gap via the ablative plasma to provide a conductive path between the main electrodes. This provides faster triggering and requires less trigger energy than previous arc triggers. It also provides a more conductive initial main arc than previously possible. The initial properties of the main arc are controllable by the plasma properties, which are in turn controllable by design parameters of the ablative plasma gun.
摘要翻译： 等离子体枪，具有两个间隙电极，位于烧蚀材料室（例如可消融聚合物）的相对两端。 枪以超音速弹出烧蚀等离子体。 扩散喷嘴扩展等离子体射流以填充主弧装置的电极之间的间隙，例如电弧撬棒或高压电源开关。 等离子体通过消融等离子体降低主电弧间隙的阻抗来触发主电弧装置，以在主电极之间提供导电路径。 这提供了更快的触发，并且比以前的电弧触发要求更少的触发能量。 它还提供比以前更可能的更导电的初始主弧。 主弧的初始特性可以通过等离子体性质来控制，这些等离子体性质又可由烧蚀等离子枪的设计参数控制。
-
公开(公告)号：US07821749B2
公开(公告)日：2010-10-26
申请号：US11693849
申请日：2007-03-30
IPC分类号： H02H3/00
CPC分类号： H01T2/02 , H02H1/0023 , H02H9/06
摘要： An arc crowbar with electrodes separated by a gap in a protective case. Each electrode is connected to an electrically different conductor of a circuit. A sensor detects an arc flash condition on the circuit and signals a trigger circuit to send an electrical pulse to an arc-triggering device in the arc crowbar gap. The triggering device ionizes a portion of the gas between the electrodes, initiating a protective arc between the electrodes that absorbs energy from the power circuit and trips a breaker, eliminating the arc flash condition. The triggering device may be a plasma gun, especially one that injects plasma of an ablated material into the gap. The sensor may signal a circuit breaker to open in the power circuit. Arc flash sensor types may include a differential current sensor and/or an optical sensor.
摘要翻译： 电弧撬棒，电极由保护壳中的间隙隔开。 每个电极连接到电路的不同电导体。 传感器检测电路上的电弧闪光状况，并且发出触发电路，以在电弧消除间隙中向电弧触发装置发送电脉冲。 触发装置电离电极之间的一部分气体，在电极之间引发保护电弧，吸收来自电源电路的能量并跳过断路器，消除电弧闪光状态。 触发装置可以是等离子体枪，特别是将消融材料的等离子体注入间隙的装置。 传感器可能会将断路器发信号通知电源电路。 电弧闪光传感器类型可以包括差分电流传感器和/或光学传感器。
-
公开(公告)号：US20080239598A1
公开(公告)日：2008-10-02
申请号：US11693849
申请日：2007-03-30
IPC分类号： H02H9/04
CPC分类号： H01T2/02 , H02H1/0023 , H02H9/06
摘要： An arc crowbar with electrodes separated by a gap in a protective case. Each electrode is connected to an electrically different conductor of a circuit. A sensor detects an arc flash condition on the circuit and signals a trigger circuit to send an electrical pulse to an arc-triggering device in the arc crowbar gap. The triggering device ionizes a portion of the gas between the electrodes, initiating a protective arc between the electrodes that absorbs energy from the power circuit and trips a breaker, eliminating the arc flash condition. The triggering device may be a plasma gun, especially one that injects plasma of an ablated material into the gap. The sensor may signal a circuit breaker to open in the power circuit. Arc flash sensor types may include a differential current sensor and/or an optical sensor.
摘要翻译： 电弧撬棒，电极由保护壳中的间隙隔开。 每个电极连接到电路的不同电导体。 传感器检测电路上的电弧闪光状态，并且发出触发电路，以在电弧消除间隙中向电弧触发装置发送电脉冲。 触发装置电离电极之间的一部分气体，在电极之间引发保护电弧，吸收来自电源电路的能量并跳过断路器，消除电弧闪光状态。 触发装置可以是等离子体枪，特别是将消融材料的等离子体注入间隙的装置。 传感器可能会将断路器发信号通知电源电路。 电弧闪光传感器类型可以包括差分电流传感器和/或光学传感器。
-
公开(公告)号：US20150214840A1
公开(公告)日：2015-07-30
申请号：US14417270
申请日：2012-08-28
申请人： Anirudh Acharya , Dimitris Giannoccaro , Gopichand Bopparaju , Malaya Kumar Sahu , Soubhik Auddy , Subhasish Mukherjee
发明人： Anirudh Acharya , Dimitris Giannoccaro , Gopichand Bopparaju , Malaya Kumar Sahu , Soubhik Auddy , Subhasish Mukherjee
摘要： It is presented a converter device arranged to convert power between a first high voltage direct current, HVDC, connection, a second HVDC connection and an AC connection. The converter device comprises: a first power converter comprising a phase leg provided between terminals of the first HVDC connection, the phase leg comprising a positive arm, an inductor, an AC connection and a negative arm. Each one of the positive arm and the negative arm comprises converter cells and one of the converter cells is a first host converter cell. Each converter cell comprises two main switching elements and a storage element, the two switching elements being arranged serially in parallel with the energy storage element. The converter device also comprises a power converter section comprising a first converter cell comprising at least two switching elements connected serially in parallel with the energy storage element of the first host converter cell. The converter device is arranged to control the switching elements of the first switching element string in dependence of the state of the main switching elements of the first host converter cell.
摘要翻译： 提供了一种转换器装置，其被布置成在第一高压直流电，HVDC，连接，第二HVDC连接和AC连接之间转换功率。 转换器装置包括：第一功率转换器，包括设置在第一HVDC连接的端子之间的相位支路，相位支路包括正极臂，电感器，AC连接和负极臂。 正极臂和负极臂中的每一个包括转换器单元，并且转换器单元之一是第一主转换器单元。 每个转换器单元包括两个主开关元件和存储元件，两个开关元件与能量存储元件串联地排列。 转换器装置还包括功率转换器部分，其包括第一转换器单元，该第一转换器单元包括与第一主转换器单元的能量存储元件串联连接的至少两个开关元件。 转换器装置被配置为根据第一主转换器单元的主开关元件的状态来控制第一开关元件串的开关元件。
-
公开(公告)号：US09577524B2
公开(公告)日：2017-02-21
申请号：US14417270
申请日：2012-08-28
申请人： Anirudh Acharya , Dimitris Giannoccaro , Gopichand Bopparaju , Malaya Kumar Sahu , Soubhik Auddy , Subhasish Mukherjee
发明人： Anirudh Acharya , Dimitris Giannoccaro , Gopichand Bopparaju , Malaya Kumar Sahu , Soubhik Auddy , Subhasish Mukherjee
摘要： It is presented a converter device arranged to convert power between a first high voltage direct current, HVDC, connection, a second HVDC connection and an AC connection. The converter device comprises: a first power converter comprising a phase leg provided between terminals of the first HVDC connection, the phase leg comprising a positive arm, an inductor, an AC connection and a negative arm. Each one of the positive arm and the negative arm comprises converter cells and one of the converter cells is a first host converter cell. Each converter cell comprises two main switching elements and a storage element, the two switching elements being arranged serially in parallel with the energy storage element. The converter device also comprises a power converter section comprising a first converter cell comprising at least two switching elements connected serially in parallel with the energy storage element of the first host converter cell. The converter device is arranged to control the switching elements of the first switching element string in dependence of the state of the main switching elements of the first host converter cell.
摘要翻译： 提供了一种转换器装置，其被布置成在第一高压直流电，HVDC，连接，第二HVDC连接和AC连接之间转换功率。 转换器装置包括：第一功率转换器，包括设置在第一HVDC连接的端子之间的相位支路，相位支路包括正极臂，电感器，AC连接和负极臂。 正极臂和负极臂中的每一个包括转换器单元，并且转换器单元之一是第一主转换器单元。 每个转换器单元包括两个主开关元件和存储元件，两个开关元件与能量存储元件串联地排列。 转换器装置还包括功率转换器部分，其包括第一转换器单元，该第一转换器单元包括与第一主转换器单元的能量存储元件串联连接的至少两个开关元件。 转换器装置被配置为根据第一主转换器单元的主开关元件的状态来控制第一开关元件串的开关元件。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.016 秒)
