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1.发明授权
公开(公告)号：EP2330709B1
公开(公告)日：2019-07-31
申请号：EP09177758.1
申请日：2009-12-02
申请人： ABB Research Ltd.
发明人： Hultqvist, Lars , Reza, Muhamad , Rivas, Richard
摘要： The present invention relates to a ground fault handling device (GHR) that provides an interface between two power transmission sections of a power transmission and/or distribution system as well as to such a power transmission and/or distribution system (10). The system comprises a first and a second power transmission section (G, 12) and the ground fault handling device (GHR) for connecting the first section to the second section, where the second section (12) is of a first type including at least one underground power line and the first section (G) is of another type lacking underground power lines. The ground fault handling device comprises a first isolating transformer (IT1) having a first set of windings and a second set of windings, where the first set is coupled to the first section, the second set is coupled to the second section and the windings of the second set are solidly or resistively (R1, R3, R4, R5) grounded.
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公开(公告)号：EP1911143B1
公开(公告)日：2019-07-24
申请号：EP06761247.3
申请日：2006-07-31
申请人： ABB RESEARCH LTD.
IPC分类号： H02M7/219
CPC分类号： H02M7/219 , H02M5/297 , H02M7/4807 , H02M7/49 , H02M2001/0074
摘要： The present invention is concerned with a power supply system for railway traction applications including a multilevel AC/DC converter. The converter comprises a plurality of series-connected single-stage cycloconverters or direct AC frequency converters (20, 20', 20") connected between an AC supply line (11) and a traction transformer (21). The transformer is operable at a transformer nominal frequency below 3 kHz and above the AC line frequency. On the secondary side of the transformer, more than one parallel-connected secondary converter (22, 22', 22") are provided and connected to a DC link (23). In case of failure of one of the secondary converters, the multilevel AC/DC converter may continue to operate with reduced power delivered by the remaining operating levels.
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公开(公告)号：EP2624259B1
公开(公告)日：2019-07-17
申请号：EP12153843.3
申请日：2012-02-03
申请人： ABB Research Ltd.
发明人： Emilsson, David , Wedin, Erik , Åstrand, Peter , Schiessling, Joachim , Hjortstam, Olof , Birgerson, Jonas , Berglund, Mats , Lavesson, Nils
摘要： It is presented a bushing (1) comprising a condenser core (3) arranged to house an electrical conductor (15) along a central axis (X) of the condenser core (3), wherein the condenser core (3) has a tapering end portion (3-2a) arranged to be in contact with a fluid dielectric having higher dielectric withstand strength than air, the tapering end portion (3-2a) presenting a surface having a first portion (4-1) with a first inclination (I-1) in the axial direction and a second portion (4-2) with a second inclination (I-2) in the axial direction, which second inclination (I-2) differs from the first inclination (I-1), wherein the first portion (4-1) and the second portion (4-2) define planes that intersect the central axis (X). A system comprising such a bushing is also presented herein.
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公开(公告)号：EP1914875B1
公开(公告)日：2019-07-10
申请号：EP06122689.0
申请日：2006-10-20
申请人： ABB Research Ltd.
IPC分类号： H02P3/18
摘要： This invention concerns a softstarter device adapted for controlling an electric motor connected to the device especially during a start or a stop of the motor. The softstarter device comprises calculating means for calculating a difference between a determined motor torque and a reference value for said motor torque, and calculating an error signal from the comparison between said calculated torque and the reference value to change the speed of said motor. The softstarter device also comprises means for reducing the speed of said motor and the rate of change of motor speed with respect to time during a stopping time interval is lower during a first part of the interval. The speed of said motor is reduced dependent on said error signal so that the rate of change of motor speed with respect to time during a stopping time interval varies at least between a first part of the time interval and a second part of the time interval.
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公开(公告)号：EP1932629B1
公开(公告)日：2019-04-24
申请号：EP06125771.3
申请日：2006-12-11
申请人： ABB Research Ltd.
IPC分类号： B25J9/16
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公开(公告)号：EP2870485B1
公开(公告)日：2018-12-26
申请号：EP13734386.9
申请日：2013-07-04
申请人： ABB Research Ltd.
发明人： MÜLLER, Georg , FRANK, Andreas , BOHNERT, Klaus , GU, Xun
CPC分类号： G01R19/32 , G01R15/246 , G01R15/247
摘要： In a fiber-optic current sensor, a 22.5° Faraday rotator, which is part of the sensing fiber coil, determines the working point of the sensor. The coil is operated with substantially linearly polarized light or incoherent substantially left and right circularly polarized light waves. In one arrangement, a polarization beam splitter generates two optical signals that vary in anti-phase with changing current. A signal processor determines the current from the two anti-phase signals. Appropriately detuned and oriented fiber-optic half-wave or quarter-wave retarders before the fiber coil are used to reduce or cancel the adverse effects of temperature and bend-induced birefringence on the measurement signal. Moreover, the temperature may be derived from the difference in the bias of the anti-phase signals and may be used to cancel temperature effects in the signal processor.
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公开(公告)号：EP2520040B1
公开(公告)日：2018-11-14
申请号：EP09852745.0
申请日：2009-12-31
申请人： ABB Research Ltd.
发明人： SU, Bin , LI, Youyi , EINARSSON, Torbjorn
CPC分类号： H04J3/0682 , H02H1/0061 , H02H3/30 , H04J3/065 , H04J3/0658
摘要： The invention provides a method and apparatus for detecting communication channel delay asymmetry between transmission line protection devices. The method comprises: calculating, repeatedly, clock disparity between clocks of the protection devices and communication delays at different paths of the communication channel; comparing the latest calculated clock disparity and communication delays with previously calculated clock disparities and communication delays, respectively; determining a channel switching has happened if a change of the calculated clock disparity exceeds a first threshold, or a change of the calculated communication delays for any path exceeds a second threshold; and determining the channel delays as asymmetrical if a difference between the calculated communication delays of the different paths after the channel switching exceeds a third threshold.
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公开(公告)号：EP2331301B1
公开(公告)日：2018-10-17
申请号：EP08815510.6
申请日：2008-08-29
申请人： ABB Research Ltd.
IPC分类号： B25J9/16
CPC分类号： B25J9/1687 , B23P19/007 , B25J13/085 , G05B2219/40035 , G05B2219/40053 , G05B2219/40537
摘要： A robot is used to pick parts from a bin. The robot has a compliant apparatus and one or more tools are connected to the apparatus to perform the picking. The compliant apparatus has mechanisms for monitoring and/or controlling its compliance. The compliant apparatus can have various embodiments. Force sensing can be used during removal of grasped parts from the bin to determine the force exerted on the picking tool(s). The signal indicative of the exerted force can be used by the robot controller to determine the weight of the parts that may be held by the picking tool(s). The robot has one or more devices which can be the picking tool to stir the parts in the bin.
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