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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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公开(公告)号：US20220291296A1
公开(公告)日：2022-09-15
申请号：US17629422
申请日：2020-06-23
IPC分类号： G01R31/62
摘要： The invention relates to a method and to a system (1) for monitoring at least one inductive operating means (TR). The inductive operating means (TR) is used in a power supply network. For this purpose, each inductive operating means is assigned a monitoring unit (2). Real-time data (22) relating to the current state of the inductive operating means (TR) can be stored in a data store (4) of the monitoring unit (2). An evaluation unit (6) of the monitoring unit (2) is communicatively connected to the data store (4). By means of the monitoring unit (2), a failure rate (FR) for the at least one inductive operating means (TR) is determined according to a state factor (CF).
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公开(公告)号：US20220277906A1
公开(公告)日：2022-09-01
申请号：US17609797
申请日：2020-04-23
发明人： Sebastian Schmid , Eduard Zerr , Klaus Ixmeier
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：US20220262581A1
公开(公告)日：2022-08-18
申请号：US17611199
申请日：2020-04-23
摘要： A drive system drives at least one switch. The drive system includes: a drive shaft, which is configured to connect the drive system to the at least one switch and at least one motor, which is configured to be coupled to the drive shaft; a feedback system which is configured to determine a position of the drive shaft and, based on this position, to generate a feedback signal; and a controller which, based on the feedback signal, selects a stored travel profile from a plurality of travel profiles and controls the motor in accordance with the selected travel profile.
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公开(公告)号：US20220216013A1
公开(公告)日：2022-07-07
申请号：US17608165
申请日：2020-04-23
发明人： Benjamin Dittmann , Eduard Zerr , Klaus Ixmeier
IPC分类号： H01H3/26
摘要： A switch assembly has a switch; and a servo drive system for the switch. The servo drive system includes: a motor configured to drive the switch; a power section configured to supply power to the motor; and a control unit configured to control the power section depending on at least one desired value. The control unit is configured to identify the presence of at least one safety-relevant event and, in the case of the safety-relevant event, to transmit at least one control signal to the power section. The power section is configured to initiate or carry out at least one safety measure depending on the control signal.
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公开(公告)号：US20220216005A1
公开(公告)日：2022-07-07
申请号：US17611184
申请日：2020-04-23
摘要： A method carries out a switchover of an on-load tap-changer using a drive system. The drive system includes at least one motor which acts on a drive shaft, a control device and an encoder system which is directly or indirectly coupled to the drive shaft. The method includes receiving a signal for switching the on-load tap-changer from the control device; determining by the control device whether switching to a current tap was performed from an upward or downward direction, and whether switching will be performed to a next tap in the upward or downward direction; selecting, on the basis of the determination, one of a plurality of travel profiles for the drive system of the on-load tap-changer, on the basis of which the switchover is carried out; and carrying out and monitoring the switchover by the drive system according to the selected travel profile.
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公开(公告)号：US11327039B2
公开(公告)日：2022-05-10
申请号：US17311362
申请日：2019-12-05
IPC分类号： G09G3/3225 , G09G3/20 , G01N27/16 , H01H33/56 , G01N25/30
摘要： A method monitors gases produced in an insulating medium circuit. The insulating medium circuit is in contact with a transition resistor of an on-load tap-changer. The method includes: ascertaining a time profile of a resistor temperature of the transition resistor during a loading time period; and determining at least one characteristic value for characterizing the gases produced based upon the time profile of the resistor temperature.
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公开(公告)号：US11262248B2
公开(公告)日：2022-03-01
申请号：US17276896
申请日：2019-09-19
发明人： Angus Bryant
摘要： A method analyzes an operation of a power semiconductor device. The method includes: providing a set of reference voltages of the power semiconductor device and a set of corresponding reference currents; measuring an on-state voltage and a corresponding on-state current of the power semiconductor device to obtain a measurement point; adapting the set of reference voltages by adapting two of the set of reference voltages lying closest to the measurement point by extrapolating the measurement point; and using the adapted set of reference voltages to analyze the operation of the power semiconductor device. The extrapolation is based on a predefined reference increment current and a predefined reference increment voltage.
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