Patents Assigned to ABB AB
  • Object oriented data processing
    Patent number: 7016918
    Abstract: A method and arrangements in a computerized system for control operations is disclosed. The computerized is adapted for processing data associated with real world entities based on objects representing the real world entities. In the method at least one formal instance is created, the at least one formal instance containing information regarding instantiation of at least one object. At least one formal instance is associated with one or more formal instances or groups of formal instances based on information of the type of said at least one object or the at least one formal instance.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: March 21, 2006
    Assignee: ABB AB
    Inventors: Johan Andersson, Mikael Rudin, Thomas Pauly
  • Device and a method for continuous casting
    Publication number: 20060054296
    Abstract: A computer program product for controlling an apparatus for continuous casting of metals. The computer program product includes a computer readable medium and computer program instructions recorded on the computer readable medium executable by a processor for performing the steps of supplying a molten metal to a casting mold with an elongated horizontal cross section, applying at least one magnetic field to the to exert an influence on the movement of the molten metal, generating a stationary magnetic field with a variable strength across the elongated cross section of the casting mold in the vicinity of, or below, where the molten metal is supplied, and generating a variable magnetic field in an area of the upper surface of molten metal in a region that is centrally located with respect to the elongated cross section and in the vicinity of where the molten metal is supplied.
    Type: Application
    Filed: July 29, 2005
    Publication date: March 16, 2006
    Applicant: ABB AB
    Inventor: Jan-Erik Eriksson
  • Industrial robot
    Patent number: 7011489
    Abstract: An industrial robot for movement of an object in space comprising a stationary platform, a movable platform adapted for supporting the object, and a first, a second and a third arm to which the platforms are joined. The first arm comprises a first actuator, a first supporting arm influenced by the first actuator and rotatable around a first axis, and a first linkage. The second arm comprises a second actuator, a second supporting arm influenced by the second actuator and rotatable around a second axis, and a second linkage. The third arm comprises a third actuator, a third supporting arm influenced by the third actuator and rotatable around a third axis, and a third linkage. The second supporting arm is freely mounted around a cross-beam that is arranged at right angles to the second axis.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: March 14, 2006
    Assignee: ABB AB
    Inventors: Torgny Brogårdh, Daniel Wäppling, Feng Xialong, Bo Holmgren
  • Monitoring system
    Patent number: 7005863
    Abstract: The invention relates to a device for monitoring a surge arrester connected to a power network, comprising a registering unit (1) and means (63, 66) for attachment of the registering unit to the surge arrester. The registering unit comprises a grounding line (16), which is adapted to conduct a current flowing through the surge arrester to ground, means (4) for registration of a current passing through the gounding line (16) from the surge arrester, a member (9) for registration of current pulses passing through the surge arrester, and a storage member (5) for storing data concerning the current passing through the grounding line (16) from the surge arrester and data concerning registered current pulses.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: February 28, 2006
    Assignee: ABB AB
    Inventors: Michael Gudmundsson, Sara Nordin
  • Current compensation method and device for power system protection
    Patent number: 7002784
    Abstract: The present invention relates to a method for current compensation of a protection system for protecting a zone in a power system, which zone comprises a number of transmission lines connected to power sources and a number of transmission lines connected to a number of loads where the power sources and the loads are arranged outside the zone and a number of current transformers (CT) arranged to the transmission lines, wherein the method comprises the steps of continuously measuring all the incoming currents (Iin) to the zone, continuously measuring all the outgoing currents (Iout) from the zone, continuously calculating the differential current (Id) according to Id=Iin?Iout, continuously calculating q=Iout/Iin, continuously comparing q with set values and continuously comparing Iout with a set value Set1.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: February 21, 2006
    Assignee: ABB AB
    Inventors: Jianping Wang, Zoran Gajic, Mikael Goransson
  • Device and a method for estimating the speed of a slip ring asynchronous machine
    Patent number: 6995539
    Abstract: The invention relates to a device and a method for estimating the speed of a slip ring asynchronous machine. The asynchronous machine includes a stator having a stator winding, arranged to be fed with three-phase voltage and current in order to generate a varying magnetic flux, and a rotor having a rotor winding in which the magnetic flux is arranged to induce a voltage to create an electromagnetic torque. The device includes a measuring member arranged to measure the value of the voltage in the rotor winding during at least one time period and a calculating unit, which is arranged, using the above measured voltage, to calculate a value of the rotor speed.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: February 7, 2006
    Assignee: ABB AB
    Inventors: Lars Tuve Hansson, Alojz Slutej
  • Converter and a method for controlling a converter
    Patent number: 6995994
    Abstract: The invention relates to a converter provided with a resonant circuit (16), which converter comprises a device (31) for measuring the derivative (dI/dt) of the current through the current valves 82, 3) and a detection device (32) co-operating with said measuring device (31) for detecting a short-circuit in the converter, the detection device (32) being adapted to detect a short-circuit current when the current derivative (dI/dt) measured by the measuring device (31) is equal to or exceeds a stipulated current derivative limit value (dI/dtlim) during a length of time exceeding a stipulated time limit value (tlim). The invention also relates to a method for controlling such a converter.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: February 7, 2006
    Assignee: ABB AB
    Inventors: Bo Bijlenga, Peter Lundberg, Tomas Jonsson, Nicklas Johansson, Esie Ramezani
  • Transformer with voltage regulating means
    Patent number: 6995646
    Abstract: A power or regulating transformer with voltage regulator includes regulating windings made of a flexible conductor having an electric field containing mechanism that forces the electric field due to the current in the winding to be contained within the flexible conductor. Since virtually no electric field is to be found outside the flexible conductor of the regulating winding, the regulating winding may be formed without having to consider the electric field distribution, thus providing for a transformer with a favorable regulating winding design.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: February 7, 2006
    Assignee: ABB AB
    Inventors: Udo Fromm, Par Holmberg, Albert Jaksts, Mats Leijon, Christian Sasse, Thorsten Schutte
  • Method and device for locking
    Patent number: 6989498
    Abstract: The present invention concerns a method and a device for locking a disconnecting breaker. During locking of a single-poled or multiple-poled disconnecting breaker, the actuator of the breaker is first locked both electrically and mechanically. When the breaker is in the open position, the distance between the contacts of the breaker comprises the conductor spacing for the isolation function. The electrical and mechanical locking of the actuator is indicated both electrically and mechanically. Subsequently, the link system of the breaker is mechanically locked. The link system is locked in the interlocked position. Locking of the link system is indicated by at least one indicator. Locking of the actuator of the breaker can be controlled manually via a key- and lock device, or remotely.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: January 24, 2006
    Assignee: ABB AB
    Inventors: Hans Linder, Ulf Borg
  • Device and a method for voltage control in an electric transmission network
    Patent number: 6984962
    Abstract: A device for control of a compensator connected to a polyphase electric transmission network for reactive electric power in dependence on a voltage sensed in the transmission network. A voltage controller, in dependence on the difference of a reference value for the voltage and its sensed value, forms a reference value for a reactive power flow through the compensator. A transformation element represents the sensed voltage as a voltage vector in a rotating two-phase system of coordinates and forms a compensation signal in dependence on a sensed change of the angular position of the voltage vector in the two-phase system of coordinates. A summation element forms the reference value for reactive power flow through the compensator in dependence on the compensation signal.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: January 10, 2006
    Assignee: ABB AB
    Inventors: Lennart Ängquist, Björn Thordvaldsson
  • Industrial robot
    Patent number: 6974297
    Abstract: An industrial robot for movement of an object in space comprising a platform arranged for carrying the object, a first arm arranged for influencing the platform in a first movement and comprising a first actuator and two links, each of which comprises an outer joint arranged in the platform and an inner joint arranged in the first actuator, a second arm arranged for influencing the platform in a second movement and comprising a second actuator and two links, each of which comprises an outer joint arranged in the platform and an inner joint arranged in the second actuator, and a third arm arranged for influencing the platform in a third movement and comprising a third actuator and a link, which comprises an outer joint arranged in the platform and an inner joint arranged in the third actuator.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: December 13, 2005
    Assignee: ABB AB
    Inventor: Torgny Brogårdh
  • Power transformer/inductor
    Patent number: 6970063
    Abstract: The present invention relates to a power transformer/inductor comprising at least one winding. The windings are designed by means of a high-voltage cable, comprising an electric conductor, and around the conductor there is arranged a first semiconducting layer, around the first semiconducting layer there is arranged an insulating layer and around the insulating layer there is arranged a second semiconducting layer. The second semiconducting layer is earthed at or in the vicinity of both ends (261, 262; 281, 282) of each winding and furthermore one point between both ends (261, 262; 281, 282) is directly earthed.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: November 29, 2005
    Assignee: ABB AB
    Inventors: Udo Fromm, Sven Hornfeldt, Par Holmberg, Gunnar Kylander, Li Ming, Mats Leijon
  • Pole-top insulator
    Patent number: 6965074
    Abstract: A pole-top insulator for carrying overhead electrical cables on pole legs or similar supporting structures located along power lines. One or more self-supporting tubular supporting arms made of electrically insulating composite material to which supporting cables are fixed are arranged on the top end of the supporting structures. The tubular supporting arms are joined to the supporting structure via an intermediate center part that can be attached to the supporting structure from which the tubular supporting arms extend outwards.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: November 15, 2005
    Assignee: ABB AB
    Inventors: Björn Lindberg, Johan Engström
  • Electrical machine
    Publication number: 20050206488
    Abstract: An electric machine comprises a core (10) of magnetic material and a first insulating layer (14) of a solid electrically insulating material surrounding the core. A high-voltage winding (17) in the form of an electric conductor is wound around a first part (16) of the first insulating layer and a field-equalizing member (19) is arranged around a second part (18) of the first insulating layer. Further, a second insulating layer (20) of a solid electrically insulating material surrounds the high-voltage winding and the field-equalizing member. The field-equalizing member comprises at least one first sub-member in the form of a winding (27, 28, 37, 38), and an electric cable conductor (31) is intended to be connected to the high-voltage winding at the field-equalizing member.
    Type: Application
    Filed: January 22, 2003
    Publication date: September 22, 2005
    Applicant: ABB AB
    Inventor: Stefan Valdemarsson
  • Device for continuous or semi-continuous casting of metal material
    Publication number: 20050205235
    Abstract: The present invention relates to a device for continuous or semi-continuous casting of a metal material. The device comprises a first arrangement comprising a coil (7) having an extension around the casting mould (2) in an area, which is arranged to comprise molten metal material. The coil (7) is arranged to be fed with alternating current such that a varying magnetic field generated and is applied to the molten metal material in the casting mould (2). The device also comprises a second arrangement comprising at least two magnetic poles (8), which are provided at opposite sides of the casting mould (2). The poles (8) are arranged to supply a static or periodic low-frequency magnetic field to the molten metal material in the casting area. The poles (8) comprise at least a portion (11) which comprises a plurality of material layers which are electrically insulated from each other.
    Type: Application
    Filed: May 6, 2005
    Publication date: September 22, 2005
    Applicant: ABB AB
    Inventors: Nils Jacobson, Jan Eriksson, Erik Svensson
  • Control system and method for controlling one or serveral manipulators
    Publication number: 20050209711
    Abstract: A control system for controlling one or more manipulators. One or more drives control motors driving the movements of the manipulator. An axis computer provides control signals to the drives. A main computer is adapted to execute a program with instructions for the movements and supplies the axis computer with control instructions. Physically separated modules are adapted to be placed at separated locations and to handle different functions. Each module may be surrounded by a casing of its own, may have its own power supply and has a well-defined interface in relation to the other modules. The computers and drives are arranged in the modules. One of the modules is a main computer module, which comprises the main computer. Another of the modules is a drive module, which comprises the axis computer.
    Type: Application
    Filed: June 5, 2003
    Publication date: September 22, 2005
    Applicant: ABB AB
    Inventors: Henrik Ryegard, Fredrik Pahlm, Jesper Bergsjo, Ian Bird-Radolovic
  • Device and a method for continuous casting
    Patent number: 6938674
    Abstract: An apparatus for continuous casting of metals has members (16) adapted to generate a stationary magnetic field of a variable strength over substantially the entire horizontal cross section of the mould from one long side to the other long side close to, or below, the region for supply of molten metal at a distance below the upper surface of the molten metal. There are also members (17) adapted to generate a variable magnetic field in the area of the upper surface in a region that is centrally located with respect to said cross section and close to a region for supply of molten metal. A unit (12) is adapted to control said magnetic members (16, 17) to generate, independently of each other, magnetic fields with an appearance that is dependent on the value prevailing of one or more predetermined casting parameters.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: September 6, 2005
    Assignee: ABB AB
    Inventor: Jan-Erik Eriksson
  • Transformer/reactor
    Patent number: 6940380
    Abstract: The present invention relates to a power transformer/reactor (14, 15, 16) for high voltages, comprising at least one winding having at least one current-carrying conductor. The winding comprises a solid insulation (7) surrounded by outer and inner layers (8,6) serving for equalization of potential and having semiconducting properties. The layers (6,8) and the insulation (7) adhere along essentially the whole of its contact surfaces. Said conductor is arranged interiorly of the inner semiconducting layer (6). The outer layer (8) is connected to ground or otherwise relatively low potential. Said solid insulation in the windings constitute substantially the total electrical insulation in the power transformer/reactor.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: September 6, 2005
    Assignee: ABB AB
    Inventor: Mats Leijon
  • Method and a system for evaluating whether a signal is suitable for feed-forward control
    Patent number: 6937910
    Abstract: A method for evaluating whether a measurable disturbance on a process controlled by a feedback controller is suitable for feed-forward control. The disturbance is measured. The controller output signal due to the disturbance is measured. A first reference signal corresponding to the controller output signal is measured when responding to disturbance entering before the process. A second reference signal corresponding to the controller output signal is generated when responding to a disturbance entering after the process. It is estimated where in the process the disturbance enters by comparing the measured controller output signal due to the disturbance with the reference signals. It is evaluated whether the disturbance is suitable for feed-forward control depending on where in the process the disturbance enters.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: August 30, 2005
    Assignee: ABB AB
    Inventors: Mikael Petersson, Tore Hägglund, Karl-Erik Årzën
  • Refiner control
    Patent number: 6935164
    Abstract: In the present invention a refiner (108) of a mechanical pulping line is supplied with a controllable acoustic source (14), arranged for emitting acoustic signals into the pulp fluid. The controllable acoustic signal is allowed to interact with the fibres in the pulp, and the acoustic (pressure) signals resulting from such an interaction is measured. At least one spectral component is measured. The measured spectral component is used to predict properties, content and/or size of the fibres. These properties may then be used to control the refiner (108) process. The used acoustic signal has preferably a wavelength that is large compared with a typical site of the particles.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: August 30, 2005
    Assignee: ABB AB
    Inventors: Thomas Liljenberg, Stefan Backa, Lennart Thegel