| Patent Number |
Title Of Patent |
Date Issued |
| D573090 |
Cabinet for a frequency converter |
July 15, 2008 |
|
| D571303 |
Motorized change-over switch |
June 17, 2008 |
|
| D569217 |
Handle |
May 20, 2008 |
|
| D550621 |
End shield of an electrical machine |
September 11, 2007 |
|
| D548183 |
Cabinet for a frequency converter |
August 7, 2007 |
|
| D548182 |
Cabinet for a frequency converter |
August 7, 2007 |
|
| D541745 |
Cabinet for a frequency converter |
May 1, 2007 |
|
| D541744 |
Cabinet for a frequency converter |
May 1, 2007 |
|
| D541743 |
Cabinet for a frequency converter |
May 1, 2007 |
|
| D521466 |
Casing for an electronic unit |
May 23, 2006 |
|
| D512696 |
Casing for an electronic unit |
December 13, 2005 |
|
| D512026 |
Operating terminal for an electronic unit |
November 29, 2005 |
|
| D511150 |
Casing for an electronic unit |
November 1, 2005 |
|
| D511137 |
Casing for an electronic unit |
November 1, 2005 |
|
| D510320 |
Casing for an electronic unit |
October 4, 2005 |
|
| D510319 |
Casing for an electronic unit |
October 4, 2005 |
|
| D503931 |
Casing for an electronic unit |
April 12, 2005 |
|
| 7408791 |
Frequency converter assembly and method of using frequency converter assembly |
August 5, 2008 |
| A frequency converter assembly comprising a direct-voltage circuit and brake chopper means, the direct-voltage circuit including a first branch (DC+) and a second branch (DC-), and the brake chopper means including a first terminal (BRK+), a second terminal (BRK-), a brake chopper switch |
| 7388765 |
Method and arrangement in connection with a half-controlled network bridge |
June 17, 2008 |
| A method and an arrangement for controlling phase-specific thyristors of a half-controlled network bridge, the method comprising identifying a thyristor to be controlled on the basis of the magnitude of phase voltage, controlling the thyristor by switching on a voltage in its gate cu |
| 7372696 |
Cooling device and method for electronic apparatus |
May 13, 2008 |
| The present invention relates to a cooling device for an electronic apparatus comprising: a cooling element to be connected to an electronic component for receiving the heat load generated by the electronic component, an inlet port, an outlet port and a fan for bringing air to flow f |
| 7368676 |
Switching device |
May 6, 2008 |
| A switching device having a frame, in which an actuator adapted to rotate a main shaft of the switching device and rotatable around an axis of rotation, the actuator having a 0 position, an I position and a first dead point between the 0 position and the I position, the I position be |
| 7365622 |
Switching device combination for capacitive loads connected to direct voltage |
April 29, 2008 |
| This publication discloses a switching device combination for capacitive loads (3) connected to a direct voltage. The switching device combination includes an actual switch component (1) for connecting voltage to the capacitive load (3), a charging switch component (2) for connecting |
| 7359182 |
Plug-in unit assembly comprising instrument transformers |
April 15, 2008 |
| The invention relates to a plug-in unit assembly comprising instrument transformers, a case assembly (1) comprising a connector assembly (10), and a plug-in unit (2) comprising at least one instrument transformer (3, 4) and configured to be connected to the case assembly (1). The ins |
| 7352220 |
Measuring average of phase voltage of a frequency converter based on an idealized waveform |
April 1, 2008 |
| A method and arrangement for determining the effective time of a voltage pulse of phase voltage generated by a frequency converter provided with an intermediate voltage circuit, the voltage pulses of the phase voltage being generated from the upper and lower voltage levels (U.sub.DC, 0) |
| 7349814 |
Measurement method and arrangement |
March 25, 2008 |
| The invention relates to a method and an arrangement for measuring a liquid flow in connection with a pump system. The invention is preferably implemented in a pump system where the pump (240) is driven by an alternating-current motor (230), whose rotating speed is controlled by a co |
| 7330095 |
Cooled multiphase choke assembly |
February 12, 2008 |
| A cooled multiphase choke assembly comprising a first coil (L1, L2, L3) for each phase (U, V, W) and a first cooling element (11), each first coil (L1, L2, L3) comprising several turns of winding, which define a substantially tubular tunnel inside each coil (L1, L2, L3). The first co |
| 7280938 |
Method for determining a negative sequence component |
October 9, 2007 |
| The invention relates to a method for determining properties of a negative sequence component of a space vector quantity in an electrical network. The method according to the invention includes the steps of determining on the basis of the properties of an ellipse formed by a space vector |
| 7279802 |
Method in a wind power plant |
October 9, 2007 |
| A method for preventing mechanical oscillation in a wind power plant includes determining wind speed, controlling a generator of the power plant with speed control when the wind speed is below a predefined limit to maintain the rotation speed of the generator below a predefined first |
| 7274573 |
Assembly for installation of power electronics modules and installation method |
September 25, 2007 |
| A method and assembly for mounting power electronics modules in an equipment cabinet, cubicle or other like equipment space. According to the invention, the power electronics modules are mounted in the equipment space (1) with the help of mounting bases (3), such that the mounting ba |
| 7271505 |
Voltage balancing in intermediate circuit capacitors |
September 18, 2007 |
| A balancing circuit for voltages of a series connection of capacitors, particularly for intermediate circuit capacitors (3) of an inverter, there being at least two intermediate circuit capacitors connected in series over intermediate circuit voltage. The balancing circuit comprises |
| 7262577 |
Method for estimating the sum of stator and rotor resistances |
August 28, 2007 |
| A method for estimating the sum of the stator and rotor resistances of an induction machine using a frequency converter when the frequency converter is connected to the induction machine. The method comprises the steps of controlling the stator current of the induction machine with the |
| 7250739 |
Method for estimating the rotor time constant of an induction machine |
July 31, 2007 |
| A method for estimating the rotor time constant (.tau..sub.r) of an induction machine when the stator resistance (R.sub.s) and rotor resistance (R.sub.r) of the induction machine are known. The method comprises the steps of feeding a DC current to the stator of the induction machine, |
| 7250700 |
Arrangement for protecting an electric machine |
July 31, 2007 |
| The object of the invention is an arrangement for an alternating-current machine that can be connected to an inverter and includes windings located in grooves and insulated from the plate core of the machine. According to the invention, an electrically conductive shield is fitted bet |
| 7245197 |
Liquid-cooled choke |
July 17, 2007 |
| The invention relates to a liquid-cooled choke comprising a choke core (1), a choke coil (2) and a path (3) for a cooling liquid to cool the choke. The choke core (1) is divided into at least two parts (1a, 1b) arranged in a cooling profile (4) to which the path (3) for the cooling l |
| 7233153 |
Method and system for determining location of phase-to-earth fault |
June 19, 2007 |
| A method and system for determining a location of a phase-to-earth fault in a line of an electric network, the electric line comprising two or more sections (30a, 30b, 30c), the system being configured to determine, at a measuring point, a reactance of a fault loop; determine a faulted |
| 7227325 |
Method and arrangement for protecting a frequency converter |
June 5, 2007 |
| A method and an arrangement for protecting a frequency converter in a system comprising a motor and a frequency converter supplying it via a bipolar or multipolar supply connection, the arrangement comprising first connecting means adapted to couple poles of the supply connection mut |
| 7221152 |
Method in salient-pole permanent magnet synchronous machine |
May 22, 2007 |
| A method for determining the speed and position of a rotor of a salient-pole permanent magnet synchronous machine, the method comprising the steps of creating a voltage model (41) on a permanent magnet synchronous machine, forming a voltage reference (u.sub.s,ref) for a stator of the |
| 7218070 |
System and method for braking a motor of a propulsion unit |
May 15, 2007 |
| The present invention relates to a propeller drive arrangement for vessels used in water-borne traffic, and specifically to a propeller drive arrangement containing a propulsion unit, and to such an arrangement, which contains a propulsion unit, which is turnable relative the hull of |
| 7215099 |
Method in frequency converter provided with voltage intermediate circuit, and frequency converte |
May 8, 2007 |
| A method in a frequency converter provided with a voltage intermediate circuit in connection with interference in a network (5) to be supplied and a frequency converter (2), which comprises a network converter part (4) and an inverter part (3) and a DC intermediate circuit (7) between |
| 7198528 |
Motor unit for a ship |
April 3, 2007 |
| An arrangement of a ship's propulsion unit includes a motor unit with a motor housing arranged in the water. A motor and related controls are provided in the motor housing. A propeller is arranged at an end of a motor shaft. The motor unit includes an electrical motor, wherein an ent |
| 7190599 |
Method for determining output currents of frequency converter |
March 13, 2007 |
| A method for determining output currents of a three-phase frequency converter comprising a voltage intermediate circuit and three power switch pairs constituting an output of the frequency converter, wherein the power switches constituting a pair are coupled in series between a posit |
| 7189126 |
Ship's propulsion arrangement and method |
March 13, 2007 |
| The invention relates to a ship's propulsion and steering arrangement surrounded by water comprising an electric motor in a chamber, a propeller shaft associated with the electric motor having a propeller fitted outside the chamber, and a pressure source for pressurizing the chamber |
| 7176779 |
Inductor arrangement |
February 13, 2007 |
| An inductor arrangement for a frequency converter or corresponding electrical apparatus, the inductor arrangement comprising an input inductor coupled to the input side of the electrical apparatus and an output inductor coupled to the output side of the apparatus, the input inductor |
| 7175470 |
Locking and detaching mechanism for plug-in unit |
February 13, 2007 |
| A plug-in unit assembly comprising a case (1) and a plug-in unit (2) arranged to be attached thereto, and locking means (4, 5) having a locked position and an unlocked position. The plug-in unit (2) comprises handle means (3) pivoted to turn around a pivoting axis (9). The handle means |
| 7164562 |
Configuration and method for protecting converter means |
January 16, 2007 |
| A protection configuration for converter means which comprise a plurality of controllable switches, the protection configuration comprising a protection circuit coupled to the alternating voltage side of the converter means, which protection circuit comprises at least one protective |
| 7163426 |
Motor unit for a ship |
January 16, 2007 |
| An arrangement for a ship's propulsion unit includes a motor unit with a motor housing arranged in the water. A motor and related controls are provided in the motor housing. A propeller is arranged at an end of a motor shaft. The motor unit includes an electric motor, wherein an entire |
| 7109780 |
Control circuit for semiconductor component |
September 19, 2006 |
| Control circuit for an IGB transistor, which comprises means (T1, V1, C3, C4) for generating auxiliary voltage, a first and a second controllable control switches (V8) connected in series between the auxiliary voltage, and a gate resistor (Rg). The control circuit further comprises a boo |
| 7102325 |
Method for determining rotor flux vector of AC electrical machine |
September 5, 2006 |
| A method for determining the rotor flux vector of an electrical machine, the method comprising the steps of controlling the electrical machine with an inverter, forming an equation for the reactive power (Q.sub.inv) at the output of the inverter, forming an equation for the consumed |
| 7098623 |
Method in connection with permanent magnet synchronous machines |
August 29, 2006 |
| A method for sensorless estimation of rotor speed and position of a permanent magnet synchronous machine the method comprising the steps of calculating first stator flux vector estimate ({circumflex over (.psi.)}.sub.d,i+j{circumflex over (.psi.)}.sub.q,i) using the flux model and me |
| 7084604 |
Speed sensorless control of an induction machine using a PWM inverter with output LC filter |
August 1, 2006 |
| A method of controlling of an induction machine using an inverter is disclosed with output LC filter. The method includes determining an inverter output current vector (i.sub.A), determining an inverter output voltage vector (u.sub.A), and forming a full-order observer having a syste |
