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公开(公告)号：US12087478B2
公开(公告)日：2024-09-10
申请号：US17640839
申请日：2020-09-08
摘要： A resistor assembly can be used in a tap changer. The resistor assembly may include: a resistor element, which is held by at least two resistor holders; a base plate with at least one opening and on which the at least two resistor holders holding the resistor element are arranged; a plurality of guides, respectively formed in each of the resistor holders and being configured to position a first end and a second end of the resistor element with respect to a longitudinal direction between the two resistor holders; and contact points of the resistor element, the contact points being electrically contacted by contacts of the tap changer in a condition where the resistor element is inserted into the resistor holder.
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公开(公告)号：US20240222975A1
公开(公告)日：2024-07-04
申请号：US18558544
申请日：2022-05-04
摘要： A power flow control module adjusts a voltage or current in a line of an electrical network. The module includes: two module connections connecting to the line, switching elements, an energy storage, and two energy connections connecting to an energy source. The two module connections electrically connect the module in series with the line. Two of the switching elements are connected in series and are connected in parallel with the energy storage. The module is interconnected such that it is at a potential of the line of the electrical network and is galvanically isolated from a ground potential or another line of the electrical network. The switching elements are designed to increase or reduce an amplitude of the voltage in the line in order to adjust the voltage, to shift a phase of the voltage, or to control a current flow in the line.
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公开(公告)号：US11948761B2
公开(公告)日：2024-04-02
申请号：US17609797
申请日：2020-04-23
发明人： Sebastian Schmid , Eduard Zerr , Klaus Ixmeier
CPC分类号： H01H3/26 , H01H9/0011 , H01F29/04 , H01H2003/266 , H01H2009/0061
摘要： A method carries out a switchover of a first switch or at least one second switch for equipment. The method includes receiving, by a controller, a switching signal; selecting, by the controller, the first switch or at least the second switch for switchover on the basis of the switching signal; querying, by the controller, at least one parameter of the first switch or the at least second switch; checking a locking condition on the basis of the at least one queried parameter for the first switch or a locking condition for the at least second switch; and carrying out the switchover by the selected first switch or the at least second switch based upon the corresponding locking condition being met.
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公开(公告)号：US11837419B2
公开(公告)日：2023-12-05
申请号：US17312008
申请日：2019-11-14
发明人： Stefan Herold
CPC分类号： H01H3/40 , F16H33/04 , H01H3/42 , H01H9/0005
摘要： An on-load tap-changer has a transmission, a motor with an output shaft, and a diverter switch with a drive shaft. The transmission has a cam disk; a drive gear wheel; and a roller coupled to the drive gear wheel. The cam disk is connected the output shaft, which lies on a rotation axis of the cam disk. The drive gear wheel is connected to the drive shaft. The cam disk has an inner and outer contour, which are followed by the roller, and which each have a first region with a constant radius of curvature and a second region in which a distance of a respective contour from the rotation axis of the cam disk changes. During a rotational movement of the cam disk, the roller follows the first region of the outer contour, the second region of the outer contour, and then the first region of the inner contour.
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公开(公告)号：US20230317382A1
公开(公告)日：2023-10-05
申请号：US18042221
申请日：2021-07-21
IPC分类号： H01H9/00
CPC分类号： H01H9/0044 , H01H9/0016
摘要： An on-load tap changer module for an on-load tap changer, including a carrier, a diverter switch with a vacuum interrupter and a bridge switch, a selector, a change-over selector, and a drive module, wherein the diverter switch, the selector, and the change-over selector are arranged on the carrier and are activated centrally by the drive module.
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公开(公告)号：US20230243896A1
公开(公告)日：2023-08-03
申请号：US18003349
申请日：2021-06-11
发明人： Irina Lupandina , Michael Schrammel
IPC分类号： G01R31/62
CPC分类号： G01R31/62
摘要： A characteristic variable represents a thermal load on an electrical device. A first mathematical model determines the characteristic variable for a determination time based on an ambient temperature of the electrical device and a value of a thermal operating parameter of the electrical device. The first mathematical model describes a dependency of thermal operating parameters of the electrical device at a calculation time based on the ambient temperature of the electrical device and on an electrical load factor. The characteristic variable is determined for the determination time as the equivalent electrical load factor of the electrical device, for which the first mathematical model, taking into account the ambient temperature at the determination time, predicts a value of the thermal operating parameter of the electrical device determined for the determination time.
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7.发明公开公开(公告)号：US20230231495A1
公开(公告)日：2023-07-20
申请号：US18002067
申请日：2021-05-27
发明人： Robert John LEEDHAM
IPC分类号： H02M7/483 , H02M1/32 , H02M7/5387
CPC分类号： H02M7/4835 , H02M1/325 , H02M7/53871
摘要： Each cell of a cell assembly for a converter may include: first and second terminals, switching elements, and a capacitor. The cells are connected in series such that, for each pair of neighbouring cells, the first terminal of a first cell is connected to the second terminal of a second cell. Each cell includes a bypass connected to the first and second terminals that bypasses switching elements in a short circuit configuration and does not bypass the switching elements in an open circuit configuration. Each cell has a cell controller providing control signals to the sw itching elements to connect the capacitor to the first and second terminals or to bypass the capacitor. The cell controller provides a control signal to the bypass unit of neighbouring cells to change its configuration between the short circuit and open circuit configurations.
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公开(公告)号：US11631554B2
公开(公告)日：2023-04-18
申请号：US16975740
申请日：2019-02-20
IPC分类号： H01H9/00
摘要： An on-load tap changer has: a first selector rod and a second selector rod; a load changeover-switch rod; a switch; and a transmission. The first selector rod, the second selector rod and the load changeover-switch rod are arranged collinearly. The transmission is configured to: move the first selector rod and the second selector rod during changeover from one selector contact to an adjacent selector contact in a first direction; and move the load changeover-switch rod during the changeover in the first direction and a second direction, which is opposite to the first direction, so as to actuate the switch.
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公开(公告)号：US11594367B2
公开(公告)日：2023-02-28
申请号：US16771226
申请日：2018-11-21
摘要： A choke is used to carry out high-voltage tests. The choke includes: a housing; a coil arranged in an interior of the housing; at least one electrically conductive component arranged between the coil and the housing; and a flux guide configured to guide a magnetic flux that is configured to be generated by the coil. The flux guide includes a ferromagnetic material; and is arranged between the coil and the at least one electrically conductive component in such a way that the magnetic flux that is configured to be generated by the coil is guided past the electrically conductive component.
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公开(公告)号：US20220406534A1
公开(公告)日：2022-12-22
申请号：US17775317
申请日：2020-09-17
IPC分类号： H01H9/00
摘要： An on-load tap changer uninterruptedly switches between winding taps of a tap-changing transformer. The on-load tap changer includes: at least one selector configured to preselect, in a powerless manner, a selected winding tap of the winding taps; at least one diverter switch configured to actually switch loads from a previous winding tap to a preselected winding tap of the winding taps; at least one toothed gearing comprising a first gearwheel and a second gearwheel, the first gearwheel being assigned to the selector, and the second gearwheel being assigned to the diverter switch; and a drive shaft, which is configured to be actuated by a motor drive. The first gearwheel and the second gearwheel are directly interconnected mechanically in such a way that the first gearwheel and the second gearwheel are simultaneously actuatable. The drive shaft is configured to drive either the first gearwheel or the second gearwheel.
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