Patents Assigned to ABB Oy
  • METHOD AND APPARATUS FOR MAXIMIZING ENERGY EFFICIENCY OF AN ELECTRIC DRIVE SYSTEM
    Publication number: 20140142794
    Abstract: A method and an apparatus are provided for maximizing energy efficiency of an electric drive system including an electric motor and a load. In the method, the torque characteristics of the system can be selected from two types of behavior: linear and quadratic behavior of a torque of the motor in respect to a rotational speed of the motor. The method gathers a plurality of data points and with which behavior the data points correlate best. The torque characteristics to be used are determined on the basis of the correlation, and the motor is controlled on the basis of the determined torque characteristics. The apparatus implements the method.
    Type: Application
    Filed: November 21, 2013
    Publication date: May 22, 2014
    Applicant: ABB OY
    Inventor: Jukka Kalevi TOLVANEN
  • METHOD FOR APPROXIMATING A STATIC HEAD OF A FLUID TRANSFER SYSTEM
    Publication number: 20140136000
    Abstract: The present disclosure is directed to a method and apparatus for approximating a static head of a fluid transfer system including a fluid transfer device. The method can include determining a rotational speed and a power consumption of the fluid transfer device, determining a first set of data points, calculating a second set of data points on the basis of the first set of data points, determining a minimum rotational speed producing flow through the fluid transfer device on the basis of the second set of data points, and determining the static head on the basis of the minimum rotational speed.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 15, 2014
    Applicant: ABB Oy
    Inventors: Jero AHOLA, Jussi TAMMINEN, Tero AHONEN
  • Method and arrangement for controlling permanent magnet synchronous machines
    Patent number: 8723459
    Abstract: A method and an arrangement are provided for controlling a sensorless permanent magnet synchronous machine using a frequency converter connected to feed the machine with electrical power. A current vector having a magnitude is produced to the stator of the machine with the frequency converter, and the current vector is rotated for rotating the rotor of the machine. Prior to starting the drive, a value is defined for the magnitude of the current vector and a frequency limit. The defined value is used as the magnitude of the current vector when the rotor of the machine is rotated with a frequency that is lower than the defined frequency limit. A vector control method is used for controlling the machine when the frequency of the machine is higher than or equal to the defined frequency limit.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: May 13, 2014
    Assignee: ABB Oy
    Inventors: Antti Piippo, Jani Kangas, Jussi Rantanen
  • ARRANGEMENT FOR REMOVING WATER FROM AN EQUIPMENT SPACE
    Publication number: 20140115918
    Abstract: Exemplary embodiments are directed to an equipment space that is a closed space provided with electrical equipment and an air dryer condensing the moisture of the air in the equipment space into water. A system for removing water from the equipment space includes a porous element having a capillary structure and being located in an outlet opening of the equipment space. The porous element is connected such that water condensed by the air dryer is directed to a first inner surface of the porous element. The capillary structure of the porous element is configured to propogate water from the inner surface of the porous element to an outer surface of the porous element. The outer surface of the porous element is configured to release water to ambient air outside the equipment space.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Applicant: ABB Oy
    Inventors: Jorma MANNINEN, Timo KOIVULUOMA
  • Method and arrangement for controlling semiconductor component
    Patent number: 8710885
    Abstract: A method is disclosed for controlling a semiconductor component which includes a voltage controlled gate. The method includes determining and storing, prior to use of the semiconductor component, reference values of a gate voltage to be given to the gate of the semiconductor component during a change of operating states. The method also includes providing a pulse width modulated voltage from a driver circuit to a resistor connected to the gate of the semiconductor component according to the stored reference values of the gate voltage when a change in operating states of the semiconductor component is desired.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: April 29, 2014
    Assignee: ABB Oy
    Inventor: Matti Laitinen
  • Solar power plant
    Patent number: 8704406
    Abstract: A solar power plant is disclosed for converting solar energy into electric energy, and having a plurality of solar cell units, each solar cell unit containing a first cell pole and a second cell pole. The cell poles can cooperate for feeding electric energy produced by the solar cell unit as direct current out of the solar cell unit. A direct-current converter can include a plurality of direct-current input poles and two direct-current output poles, each direct-current input pole being connected to at least one cell pole. The direct-current converter can convert input direct currents entered via the direct-current input poles, and having input voltages, into an output direct current having an output voltage, and feed the output direct current via the direct-current output poles out of the direct-current converter.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: April 22, 2014
    Assignee: ABB Oy
    Inventors: Jussi Åkerberg, Kari Kovanen, Peter Lindgren
  • MAXIMUM POWER POINT TRACKING
    Publication number: 20140103885
    Abstract: A method and an arrangement of tracking a selected (e.g., maximum) power point of a photovoltaic system is disclosed, in which method an operation point of the photovoltaic system is changed based on the change of operation point and a change of power generated by the photovoltaic system. The method can include repeatedly determining a current or voltage of the photovoltaic system, determining a power of the photovoltaic system, determining a change of power of the photovoltaic system with respect to a previous determined power, and changing the operation point of the photovoltaic system by changing a current or voltage reference of the system stepwise depending on the change of power and a direction of a previous change of the current or voltage reference.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 17, 2014
    Applicant: ABB Oy
    Inventors: Tuomas PULLI, Janne HELLBERG
  • STARTING OF A SOLAR POWER PLANT
    Publication number: 20140103729
    Abstract: A method of optimizing one or more starting parameters of a solar power generator system and a solar power generator system, wherein the solar power generator system includes a solar panel array and a converter for converting power obtained from the panel array. The method can include measuring an output voltage of the panel array, comparing the output voltage with a starting voltage (Vdc), starting the solar power generator system when the output voltage of the panel array exceeds the starting voltage (Vdc), measuring the obtained power from the solar panel array after a morning start, comparing the obtained power with a known limit value, and changing the one or more starting parameters on the basis of the comparison of power.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 17, 2014
    Applicant: ABB Oy
    Inventors: Jari UUSIMÄKI, Jarkko Hyttinen, Janne Hellberg
  • SWITCH
    Publication number: 20140097155
    Abstract: A rotation mechanism for a rotary switch and a method of operating a rotary switch are provided. The rotation mechanism includes a mechanism shaft for switching the switch between open and closed positions of the switch, a crank rotationally connected to the mechanism shaft, a spring connected to the crank, where the spring has a dead point between the open and closed positions of the switch, and a force transmission roll rotationally connected to the crank. The mechanism shaft, crank and force transmission roll have a common axis of rotation. There is a predetermined rotational free-play between the rotation of the mechanism shaft and the crank, and a predetermined rotational free-play between the rotation of the crank and the force transmission roll.
    Type: Application
    Filed: December 6, 2013
    Publication date: April 10, 2014
    Applicant: ABB Oy
    Inventors: Oskari UITTO, Aki SUUTARINEN, Rainer KOLMONEN
  • METHOD FOR DETECTING ISLANDING OPERATION OF DISTRIBUTED POWER GENERATOR
    Publication number: 20140098449
    Abstract: A method and an arrangement are disclosed for detecting islanding operation of a distributed power generator. The method can include determining a frequency of a grid to which the distributed power generator is connected, measuring a rate of change of the frequency of the grid at an output of the distributed power generator, determining a threshold value for an alteration speed, comparing the rate of change of the frequency of the grid with the threshold value, and detecting islanding operation when the measured rate of change of the frequency exceeds the threshold value for a certain time period.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 10, 2014
    Applicant: ABB Oy
    Inventors: Janne HELLBERG, Kimmo Heinonen, Jari Uusimäki
  • SWITCH
    Publication number: 20140097154
    Abstract: A movable contact for a rotary switch is provided. The movable contact includes first and second contacts for contacting a stationary contact, where the first and second contacts are arranged at a distance from each other for receiving the stationary contact between the first and second contacts. The first contact is a straight contact blade for contacting stationary contacts at both ends of the blade. The second contact is a spring element configured to bend when the stationary contact is placed between the first contact and the second contact, and to cause a pressing force to the stationary contact to press the stationary contact against the first contact after the stationary contact has been placed between the first contact and the second contact.
    Type: Application
    Filed: December 6, 2013
    Publication date: April 10, 2014
    Applicant: ABB Oy
    Inventors: Oskari UITTO, Aki SUUTARINEN, Rainer KOLMONEN
  • Method and arrangement for soft start up of a pump system
    Patent number: 8690542
    Abstract: A method and arrangement for soft start up of a pump system, that includes a pump for generating a liquid flow, an electrical drive disposed to actuate the pump, and a pressure sensor disposed to measure a liquid pressure at a flow output of the pump. The rate of change of rotation speed of the pump during a start up phase is dependent on a rate of change of measured liquid pressure, wherein the rate of change of the rotation speed is a descending function of the rate of change of the measured liquid pressure.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: April 8, 2014
    Assignee: ABB Oy
    Inventor: Mikael Holmberg
  • SWITCH
    Publication number: 20140090969
    Abstract: A stationary contact for a rotary switch is provided. The stationary contact includes a connection portion for connecting to a conductor and a first portion being a contact portion for connecting the stationary contact to a rotary contact. The stationary contact also includes a second portion being a support portion for supporting the stationary contact to a switch body. The contact portion and support portion extend in the same angle from the connection portion. A method of mounting a rotary switch is also provided.
    Type: Application
    Filed: December 6, 2013
    Publication date: April 3, 2014
    Applicant: ABB Oy
    Inventors: Oskari UITTO, Aki Suutarinen, Rainer Kolmonen
  • SWITCH
    Publication number: 20140091062
    Abstract: A roll for rotating a movable contact of a rotary switch, and a method of mounting a switch are provided. The roll includes a first slot going along the diameter of the roll and open from the top of the roll for receiving the movable contact for contacting with a stationary contact of the rotary switch, and a second slot arranged perpendicular to the first slot for receiving teeth of an upper roll to be mounted together with the roll.
    Type: Application
    Filed: December 6, 2013
    Publication date: April 3, 2014
    Applicant: ABB OY
    Inventors: Oskari UITTO, Aki Suutarinen, Rainer Kolmonen
  • Frequency converter with text editor
    Patent number: 8683327
    Abstract: A frequency converter includes a symbol string editor in which the potential input symbols are grouped into at least two symbol lists. One of the lists is treated as a current symbol list, which can be scrolled and from which the symbols can be selected as the user input. In addition, a user is allowed to control change of the current symbol list such that the symbols in all of the symbol lists are available for selection. This arrangement allows for scrollable lists to be significantly shorter than a single list of potential symbols would be, which makes entering symbol strings faster.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: March 25, 2014
    Assignee: ABB Oy
    Inventors: Vesa Metso, Lauri Sumari, Marjukka Mäkelä
  • METHOD AND APPARATUS FOR PRE-EMPTIVE POWER SEMICONDUCTOR MODULE FAULT INDICATION
    Publication number: 20140079092
    Abstract: A method and an apparatus for an arrangement including a power semiconductor module with a cooling interface which is connected to a cooling element. The method first measures a first temperature value of the cooling interface, and then changes an operating mode of the power semiconductor module, wherein the operating mode is selected from an active mode and an inactive mode. The method then waits a determined time, measures a second temperature value of the cooling interface, and determines a temperature difference between the first temperature value and the second temperature value. The method then determines a level of a fault risk on the basis of the temperature difference. The apparatus implements the method.
    Type: Application
    Filed: September 19, 2012
    Publication date: March 20, 2014
    Applicant: ABB Oy
    Inventors: Vesa TiIhonen, Kari Tikkanen
  • ACTIVE CLAMP FOR A SEMICONDUCTOR SWITCH
    Publication number: 20140063667
    Abstract: Exemplary embodiments are directed to a method and arrangement for detecting an overvoltage of a semiconductor switch. The arrangement including a first semiconductor switch and a driver unit controlling the switch. An overvoltage is detected over the semiconductor switch, and a voltage is adjusted at a supply voltage input of the driver unit on the basis of the overvoltage.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 6, 2014
    Applicant: ABB OY
    Inventor: Mikko SAARINEN
  • Stator and assembly method
    Patent number: 8664810
    Abstract: An exemplary stator disk of an electric motor stator includes a set of recesses. Each recess being configured to receive a cooling pipe. The stator disk includes one or more positioning elements for aligning the stator disk with another stator disk. The one or more positioning elements being positioned to the stator disk such that when the stator disk is set to a rotated position with respect to the other stator disk in order to align the recesses of the disks for receiving of cooling pipes, the positioning elements of the two disks become only partly aligned with each other.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: March 4, 2014
    Assignee: ABB Oy
    Inventors: Jari Jäppinen, Jouni Ikäheimo, Jari Pekola
  • Cabinet for a frequency converter
    Patent number: D700574
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: March 4, 2014
    Assignee: ABB Oy
    Inventors: Jari Savolainen, Sakari Lilja, Teemu Koivuniemi, Juha-Matti Holappa
  • Table stand with panel
    Patent number: D702635
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: April 15, 2014
    Assignee: ABB OY
    Inventors: Hannu Haapaniemi, Jukka Nurmi, Aaro Pallasmaa, Mikko Paakkinen