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公开(公告)号：US20060039171A1
公开(公告)日：2006-02-23
申请号：US11183991
申请日：2005-07-19
IPC分类号： H02M3/335
CPC分类号： H01F29/04
摘要： The invention relates to an on-load transformer tap changing system wherein the secondary or primary of a transformer comprises at least one first and one second taps (p1, p2). A main connection circuit (tra-I2) is used for the permanent connection of the first tap (p1) or the second tap (p2) to an output terminal (b2) of the secondary or primary of the transformer. Secondary connection circuits (I1, I3) are each used to connect a tap (p1, p2) temporarily and directly to said output terminal (b2) of the secondary or primary of the transformer. Each of said connection circuits (I1, tra-I2, I3) comprises one or more insulated gate bipolar transistors and the system can be controlled without zero current value transition detection in the secondary winding. Application: Power transformers.
摘要翻译： 本发明涉及一种负载变压器分接变换系统，其中变压器的次级或初级管包括至少一个第一和第二抽头（p 1，p 2）。 主连接电路（tra-I 2）用于将第一抽头（p 1）或第二抽头（p 2）永久连接到变压器的次级或初级的输出端子（b 2）。 二次连接电路（I 1，I 3）分别用于将抽头（p 1，p 2）临时并直接连接到变压器的次级或初级的输出端子（b 2）。 所述连接电路（I 1，tra-I 2，I 3）中的每一个包括一个或多个绝缘栅极双极晶体管，并且可以在次级绕组中不进行零电流值转换检测来控制该系统。 应用：电力变压器。
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公开(公告)号：US07355369B2
公开(公告)日：2008-04-08
申请号：US11183991
申请日：2005-07-19
IPC分类号： G05F1/14
CPC分类号： H01F29/04
摘要： An on-load transformer tap changing system, for example for a power transformer, wherein the secondary or primary of a transformer includes at least one first tap and one second tap. A main connection circuit is used for permanent connection of the first tap or the second tap to an output terminal of the secondary or primary of the transformer. Secondary connection circuits are each used to connect a tap temporarily and directly to the output terminal of the secondary or primary of the transformer. Each of the connection circuits includes one or more insulated gate bipolar transistors. The system can be controlled without zero current value transition detection in the secondary winding.
摘要翻译： 一种负载变压器抽头变换系统，例如用于电力变压器，其中变压器的次级或初级管包括至少一个第一抽头和一个第二抽头。 主连接电路用于将第一抽头或第二抽头永久连接到变压器的次级或初级的输出端子。 二次连接电路分别用于临时和直接连接分接头的变压器次级或初级的输出端子。 每个连接电路包括一个或多个绝缘栅双极晶体管。 在次级绕组中可以控制系统的零电流值转换检测。
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公开(公告)号：US6137388A
公开(公告)日：2000-10-24
申请号：US37737
申请日：1998-03-10
申请人： Milan Saravolac
发明人： Milan Saravolac
CPC分类号： H01F6/02 , H02H9/023 , H01F2006/001 , Y02E40/69
摘要： A superconductor is placed inside a non-metallic cryostat filled with a cooling medium to maintain the superconductor in a superconductive state. A foil winding is connected in series with the superconductor by current leads and the cryostat is placed inside the winding. The winding has only a few turns in order to provide low inductance and low magnetic field when the superconductor is carrying its normal operating current. However in the event of a fault the increase in electrical current in the line winding causes a magnetic field to be generated parallel to the superconductor. The magnetic field generated exceeds the critical magnetic field of the superconductor. The magnetic field produced by the line winding triggers the superconductor to the resistive state.
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公开(公告)号：US20090230933A1
公开(公告)日：2009-09-17
申请号：US12281235
申请日：2007-03-06
IPC分类号： G05F1/16
CPC分类号： G05F1/14 , H01F29/04 , H01H9/0005
摘要： A hybrid on-load tap changer, for use in high voltage alternating current power transmission, including a selector and a diverter having two legs defining respective current paths. Each leg includes a pair of opposed first and second semiconductor switches. The hybrid on-load tap changer also includes a controller configured to switch on one of the first or second semiconductor switches of a given leg at a predetermined point within the alternating current cycle so as to commutate off a desired semiconductor switch in the other leg.
摘要翻译： 一种用于高压交流电力传输的混合式有载分接开关，包括选择器和具有限定各自电流路径的两条支路的分流器。 每个腿包括一对相对的第一和第二半导体开关。 混合式有载分接开关还包括控制器，其被配置为在交流电周期内的预定点处接通给定支路的第一或第二半导体开关中的一个，以便将另一支路中期望的半导体开关换向。
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公开(公告)号：US06433660B1
公开(公告)日：2002-08-13
申请号：US09626961
申请日：2000-07-27
申请人： Milan Saravolac
发明人： Milan Saravolac
IPC分类号： H01F600
CPC分类号： H01F6/02 , H01F2006/001 , H02H9/023 , Y02E40/69
摘要： A superconductor is placed inside a non-metallic cryostat filled with a cooling medium to maintain the superconductor in a superconductive state. A foil winding is connected in series with the superconductor by current leads and the cryostat is placed inside the winding. The winding has only a few turns in order to provide low inductance and low magnetic field when the superconductor is carrying its normal operating current. However in the event of a fault the increase in electrical current in the line winding causes a magnetic field to be generated parallel to the superconductor. The magnetic field generated exceeds the critical magnetic field of the superconductor. The magnetic field produced by the line winding triggers the superconductor to the resistive state.
摘要翻译： 将超导体放置在填充有冷却介质的非金属低温恒温器内，以将超导体保持在超导状态。 箔绕组通过电流引线与超导体串联连接，低温恒温器放置在绕组内。 绕组只有几匝，以便在超导体承载其正常工作电流时提供低电感和低磁场。 然而，在发生故障的情况下，线绕组中的电流的增加导致平行于超导体产生磁场。 所产生的磁场超过超导体的临界磁场。 线绕组产生的磁场将超导体触发到电阻状态。
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公开(公告)号：US08519682B2
公开(公告)日：2013-08-27
申请号：US12281235
申请日：2007-03-06
IPC分类号： G05F1/16
CPC分类号： G05F1/14 , H01F29/04 , H01H9/0005
摘要： A hybrid on-load tap changer, for use in high voltage alternating current power transmission, including a selector and a diverter having two legs defining respective current paths. Each leg includes a pair of opposed first and second semiconductor switches. The hybrid on-load tap changer also includes a controller configured to switch on one of the first or second semiconductor switches of a given leg at a predetermined point within the alternating current cycle so as to commutate off a desired semiconductor switch in the other leg.
摘要翻译： 一种用于高压交流电力传输的混合式有载分接开关，包括选择器和具有限定各自电流路径的两条支路的分流器。 每个腿包括一对相对的第一和第二半导体开关。 混合式有载分接开关还包括控制器，其被配置为在交流电周期内的预定点处接通给定支路的第一或第二半导体开关中的一个，以便将另一支路中期望的半导体开关换向。
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