-
公开(公告)号：US09413157B2
公开(公告)日：2016-08-09
申请号：US14383221
申请日：2012-05-01
申请人： Kazuyori Tahata , Hiroki Ito , Kunio Kikuchi , Kenji Kamei , Yusaku Horinouchi , Masaki Hiratsuka , Sho Tokoyoda , Toshinobu Takeda
发明人： Kazuyori Tahata , Hiroki Ito , Kunio Kikuchi , Kenji Kamei , Yusaku Horinouchi , Masaki Hiratsuka , Sho Tokoyoda , Toshinobu Takeda
CPC分类号： H02H3/021 , H01H9/56 , H01H33/596 , H02H3/087 , H03K17/13
摘要： A direct-current circuit breaker includes a switching unit inserted in the direct-current line; and a commutation circuit that includes a series circuit including a first current-limiting element and an interrupting unit that forms a current zero point by superimposing a resonance current on a direct current flowing in the direct-current line and interrupts the direct current at the current zero point, that is connected in parallel with the switching unit, and that becomes a flow path for the direct current after the switching unit is opened, wherein current interruption is performed by the interrupting unit after the switching unit is opened.
摘要翻译： 直流断路器包括插入直流线路中的开关单元; 以及换向电路，其包括串联电路，该串联电路包括第一限流元件和中断单元，该中断单元通过将谐振电流叠加在流过直流线路的直流电流上而中断当前的直流电流而形成电流零点 零点，其与开关单元并联连接，并且在切换单元打开之后成为直流电流的流路，其中在切换单元打开之后由中断单元执行电流中断。
-
公开(公告)号：US20150043120A1
公开(公告)日：2015-02-12
申请号：US14383221
申请日：2012-05-01
申请人： Kazuyori Tahata , Hiroki Ito , Kunio Kikuchi , Kenji Kamei , Yusaku Horinouchi , Masaki Hiratsuka , Sho Tokoyoda , Toshinobu Takeda
发明人： Kazuyori Tahata , Hiroki Ito , Kunio Kikuchi , Kenji Kamei , Yusaku Horinouchi , Masaki Hiratsuka , Sho Tokoyoda , Toshinobu Takeda
CPC分类号： H02H3/021 , H01H9/56 , H01H33/596 , H02H3/087 , H03K17/13
摘要： A direct-current circuit breaker includes a switching unit inserted in the direct-current line; and a commutation circuit that includes a series circuit including a first current-limiting element and an interrupting unit that forms a current zero point by superimposing a resonance current on a direct current flowing in the direct-current line and interrupts the direct current at the current zero point, that is connected in parallel with the switching unit, and that becomes a flow path for the direct current after the switching unit is opened, wherein current interruption is performed by the interrupting unit after the switching unit is opened.
摘要翻译： 直流断路器包括插入直流线路中的开关单元; 以及换向电路，其包括串联电路，该串联电路包括第一限流元件和中断单元，该中断单元通过将谐振电流叠加在流过直流线路的直流电流上而中断当前的直流电流而形成电流零点 零点，其与开关单元并联连接，并且在切换单元打开之后成为直流电流的流路，其中在切换单元打开之后由中断单元执行电流中断。
-
公开(公告)号：US09170597B2
公开(公告)日：2015-10-27
申请号：US13877756
申请日：2010-12-17
申请人： Kenji Kamei , Sho Tokoyoda , Tomohito Mori , Hiroki Ito , Sadayuki Kinoshita
发明人： Kenji Kamei , Sho Tokoyoda , Tomohito Mori , Hiroki Ito , Sadayuki Kinoshita
摘要： An inrush current suppressing device includes a residual-magnetic-flux calculating unit configured to retain an interruption characteristic of a breaker and an attenuation characteristic of a magnetic flux that are estimated by measurement, analysis, or the like beforehand, and apply the attenuation characteristic to a magnetic flux value at the time of current interruption obtained based on the interruption characteristic of the breaker to calculate a residual magnetic flux value. The breaker is turned on in a power supply voltage phase in which the calculated residual magnetic flux value and a theoretical value of a steady magnetic flux match.
摘要翻译： 浪涌电流抑制装置包括残留磁通计算单元，其被配置为保持断路器的中断特性和通过测量，分析等预测的磁通的衰减特性，并将衰减特性应用于 基于断路器的中断特性获得的电流中断时的磁通量值，以计算剩余磁通量值。 断路器在计算的剩余磁通值和稳定磁通的理论值匹配的电源电压相位中接通。
-
公开(公告)号：US20130193946A1
公开(公告)日：2013-08-01
申请号：US13877756
申请日：2010-12-17
申请人： Kenji Kamei , Sho Tokoyoda , Tomohito Mori , Hiroki Ito , Sadayuki Kinoshita
发明人： Kenji Kamei , Sho Tokoyoda , Tomohito Mori , Hiroki Ito , Sadayuki Kinoshita
IPC分类号： G05F5/00
摘要： An inrush current suppressing device includes a residual-magnetic-flux calculating unit configured to retain an interruption characteristic of a breaker and an attenuation characteristic of a magnetic flux that are estimated by measurement, analysis, or the like beforehand, and apply the attenuation characteristic to a magnetic flux value at the time of current interruption obtained based on the interruption characteristic of the breaker to calculate a residual magnetic flux value. The breaker is turned on in a power supply voltage phase in which the calculated residual magnetic flux value and a theoretical value of a steady magnetic flux match.
摘要翻译： 浪涌电流抑制装置包括残留磁通计算单元，其被配置为保持断路器的中断特性和通过测量，分析等预测的磁通的衰减特性，并将衰减特性应用于 基于断路器的中断特性获得的电流中断时的磁通量值，以计算剩余磁通量值。 断路器在计算的剩余磁通值和稳定磁通的理论值匹配的电源电压相位中接通。
-
公开(公告)号：US06493203B1
公开(公告)日：2002-12-10
申请号：US09717017
申请日：2000-11-22
申请人： Hiroki Ito , Masaki Hiratsuka , Haruhiko Kohyama
发明人： Hiroki Ito , Masaki Hiratsuka , Haruhiko Kohyama
IPC分类号： H01H4700
摘要： A phase control switch apparatus incorporating a phase-based break/make controller (80A, 80B, 80C) for protecting a reactive load such as a transformer (10) from transient surge phenomena taking place upon power-supply breaking/making operation. The phase control switch apparatus includes a reference phase detecting unit (82) for predicting phases of the phase-voltage and phases-current waveforms upon closing and opening of the breaker contacts, a residual magnetic flux detecting unit (83) for predicting residual fluxes in each phase of the transformer (10) on the basis of time points at which the breaker contacts of the individual phases were opened in the preceding breaking operation and polarities of the phase-currents immediately before the breakage, an operation control unit (81) for predicting optimal closing time points for the individual phases at which the transient surge can be suppressed to a minimum on the basis of the predicted residual fluxes
摘要翻译： 一种相位控制开关装置，其包括用于保护诸如变压器（10）的无功负载的相位断开/制动控制器（80A，80B，80C），以防止在电源断开/制动操作时发生的瞬态浪涌现象。 相位控制开关装置包括用于在断路器触点闭合和断开时预测相电压和相电流波形的相位的参考相位检测单元（82），用于预测残余磁通量的残余磁通量检测单元（83） 基于在前一断开操作期间各个相的断路器接触的时间点和紧邻断线之前的相电流的极性的变压器（10）的每个相位，操作控制单元（81），用于 预测根据预测的剩余通量将瞬态浪涌抑制到最小的各个相的最佳闭合时间点
-
公开(公告)号：US08526155B2
公开(公告)日：2013-09-03
申请号：US13129690
申请日：2008-12-25
申请人： Sadayuki Kinoshita , Kenji Kamei , Tomohito Mori , Hiroki Ito
发明人： Sadayuki Kinoshita , Kenji Kamei , Tomohito Mori , Hiroki Ito
CPC分类号： H01H9/563
摘要： A phase-control switchgear includes a circuit breaker, a phase difference detection unit, a storage unit, and a circuit breaker control unit. The phase difference detection unit detects a phase difference between voltages of a specific phase (U-phase) of buses to which three-phase generators are respectively connected, at a plurality of time points. The storage unit stores the detected phase differences. When the three-phase generators are out of synchronization, the circuit breaker control unit estimates a breaking time point at which the phase difference between the voltages of the U-phase of the buses will be in the range of not less than −80° and not more than 80°, based on the phase differences at the plurality of time points stored in the storage unit. The circuit breaker control unit opens the circuit breaker to break a current at the estimated breaking time point. This makes it possible to suppress a transient voltage generated between electrodes of the circuit breaker after the current is broken.
摘要翻译： 相位控制开关装置包括断路器，相位差检测单元，存储单元和断路器控制单元。 相位差检测单元在多个时间点检测分别连接有三相发电机的母线的特定相位（U相）的电压之间的相位差。 存储单元存储检测到的相位差。 当三相发电机不同步时，断路器控制单元估计总线的U相电压之间的相位差在-80°以上的断开时间点，以及 基于存储在存储单元中的多个时间点的相位差，不大于80°。 断路器控制单元打开断路器以在估计的断开时间点断开电流。 这使得可以在电流断开之后抑制断路器的电极之间产生的瞬态电压。
-
公开(公告)号：US20110228437A1
公开(公告)日：2011-09-22
申请号：US13129690
申请日：2008-12-25
申请人： Sadayuki Kinoshita , Kenji Kamei , Tomohito Mori , Hiroki Ito
发明人： Sadayuki Kinoshita , Kenji Kamei , Tomohito Mori , Hiroki Ito
IPC分类号： H01H73/02
CPC分类号： H01H9/563
摘要： A phase-control switchgear includes a circuit breaker, a phase difference detection unit, a storage unit, and a circuit breaker control unit. The phase difference detection unit detects a phase difference between voltages of a specific phase (U-phase) of buses to which three-phase generators are respectively connected, at a plurality of time points. The storage unit stores the detected phase differences. When the three-phase generators are out of synchronization, the circuit breaker control unit estimates a breaking time point at which the phase difference between the voltages of the U-phase of the buses will be in the range of not less than −80° and not more than 80°, based on the phase differences at the plurality of time points stored in the storage unit. The circuit breaker control unit opens the circuit breaker to break a current at the estimated breaking time point. This makes it possible to suppress a transient voltage generated between electrodes of the circuit breaker after the current is broken.
摘要翻译： 相位控制开关装置包括断路器，相位差检测单元，存储单元和断路器控制单元。 相位差检测单元在多个时间点检测分别连接有三相发电机的母线的特定相位（U相）的电压之间的相位差。 存储单元存储检测到的相位差。 当三相发电机不同步时，断路器控制单元估计总线的U相电压之间的相位差在-80°以上的断开时间点，以及 基于存储在存储单元中的多个时间点的相位差，不大于80°。 断路器控制单元打开断路器以在估计的断开时间点断开电流。 这使得可以在电流断开之后抑制断路器的电极之间产生的瞬态电压。
-
公开(公告)号：US07696648B2
公开(公告)日：2010-04-13
申请号：US12051498
申请日：2008-03-19
申请人： Sadayuki Kinoshita , Kenji Kamei , Tomohito Mori , Hiroki Ito
发明人： Sadayuki Kinoshita , Kenji Kamei , Tomohito Mori , Hiroki Ito
CPC分类号： H02H9/002 , Y10T307/826
摘要： A control unit of an electric power supply system causes, responsive to a closing command signal, a switch corresponding to R phase to be thrown at a timing when a stationary magnetic flux and a residual magnetic flux of R phase are coincident with each other and then subsequently causes other switches corresponding to S phase and T phase to be thrown at a timing which is delayed from a zero point of an alternating voltage of R phase by a predetermined phase angle of 0-30 degrees, such that the difference of the stationary magnetic flux and the residual magnetic flux of each of S phase and T phase is minimum. Therefore, an exciting incoming current which flows into a three-phase transformer at a time of throwing a three-phase breaker provided with interpole capacitors can be suppressed.
摘要翻译： 电源系统的控制单元响应于闭合指令信号，在R相的固定磁通和残余磁通量相互一致的时刻引起对应于R相的开关，并且然后 随后使得对应于S相和T相的其它开关在从R相的交流电压的零点延迟了0-30度的预定相位角的定时处被抛出，使得固定磁 S相和T相各自的磁通量和残余磁通量最小。 因此，可以抑制在设置有极间电容器的三相断路器投入时流入三相变压器的励磁输入电流。
-
公开(公告)号：US20090097173A1
公开(公告)日：2009-04-16
申请号：US12051498
申请日：2008-03-19
申请人： Sadayuki KINOSHITA , Kenji Kamei , Tomohito Mori , Hiroki Ito
发明人： Sadayuki KINOSHITA , Kenji Kamei , Tomohito Mori , Hiroki Ito
CPC分类号： H02H9/002 , Y10T307/826
摘要： A control unit of an electric power supply system causes, responsive to a closing command signal, a switch corresponding to R phase to be thrown at a timing when a stationary magnetic flux and a residual magnetic flux of R phase are coincident with each other and then subsequently causes other switches corresponding to S phase and T phase to be thrown at a timing which is delayed from a zero point of an alternating voltage of R phase by a predetermined phase angle of 0-30 degrees, such that the difference of the stationary magnetic flux and the residual magnetic flux of each of S phase and T phase is minimum. Therefore, an exciting incoming current which flows into a three-phase transformer at a time of throwing a three-phase breaker provided with interpole capacitors can be suppressed.
摘要翻译： 电源系统的控制单元响应于闭合指令信号，在R相的固定磁通和残余磁通量相互一致的时刻引起对应于R相的开关，并且然后 随后使得对应于S相和T相的其它开关在从R相的交流电压的零点延迟了0-30度的预定相位角的定时处被抛出，使得固定磁 S相和T相各自的磁通量和残余磁通量最小。 因此，可以抑制在设置有极间电容器的三相断路器投入时流入三相变压器的励磁输入电流。
-
公开(公告)号：US07259947B2
公开(公告)日：2007-08-21
申请号：US11043107
申请日：2005-01-27
申请人： Sadayuki Kinoshita , Hiroki Ito , Haruhiko Kohyama , Kenji Kamei
发明人： Sadayuki Kinoshita , Hiroki Ito , Haruhiko Kohyama , Kenji Kamei
IPC分类号： H02H3/18
摘要： Respective contact terminals in respective arc-suppressing spaces of respective breakers are opened at a voltage zero point of any phase of three phases, simultaneously among the three phases. If current breaking is carried out for the three phases at the same time, when the breakers of the three phases are opened, the residual magnetic levels of the respective phases of a transformer can be controlled so that the residual magnetic flux level of the phase opened at the voltage zero point is maximum (for example, −2K or +2K) and the residual magnetic flux level of the other two phases are opposite in polarity to the residual magnetic flux level of the phase concerned and equal to substantially the same residual magnetic flux (for example, +K and +K or −K and −K) which is equal to about one half of the residual magnetic flux level of the phase concerned. Accordingly, by throwing the phase broken at the voltage zero point at a first time, the difference in residual magnetic flux between the second throwing phase and the third throwing phase just after the first phase is thrown can be substantially nullified.
摘要翻译： 各断路器的各个电弧抑制空间中的相互接触端子在三相的任一阶段的电压零点处同时断开。 如果同时对三相进行电流断路，则当三相断路器断开时，可以控制变压器的各相的残余磁水平，使相位的剩余磁通量水平打开 在电压零点处是最大值（例如，-2K或+ 2K），另外两相的剩余磁通量与相关相残余磁通量的极性相反，并且等于基本上相同的残余磁 通量（例如，+ K和+ K或-K和-K）等于相关相的剩余磁通量水平的约一半。 因此，通过在第一次投掷在电压零点断开的相位，投掷第一相之后的第二投掷阶段与第三投掷阶段之间的剩余磁通量的差异基本上是无效的。
-
-
-
-
-
-
-
-
-
搜索结果
78 条记录 (耗时 0.035 秒)
