| 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 |
|
| 7626310 |
Rotor of an electrical machine |
December 1, 2009 |
| An arrangement in a rotor of an electrical machine; the rotor (5) rotates around its axis of rotation and comprises of, at least, the frame (13) and coils (15), which are projected as coil ends (11). There are protruding beams (17,18) substantially projecting in the direction of the |
| 7619342 |
Rotor for an electric machine |
November 17, 2009 |
| The object of the invention is a rotor for an electrical machine (2) formed from layered sheets (5, 22) essentially perpendicular to the rotor's axis of rotation. According to the invention, the rotor comprises at least one first sheet pack (4) that is located close to the central ax |
| 7592820 |
Isolated measurement circuit for sensor resistance |
September 22, 2009 |
| A circuit and method is disclosed for measuring the resistance of a resistive sensor, such as a PTC or NTC temperature sensor used for monitoring the temperature of the windings of an electric motor. The measurement circuit is based on an electronic circuit in which conductors from a |
| 7589984 |
Method for starting pulse width modulation |
September 15, 2009 |
| A method for starting the modulation of a frequency converter, which method comprises the steps of receiving reference voltages (s.sub.a, s.sub.b, s.sub.c; U.sub.ref), generating output switch commands from the reference voltages. The generation of output switch commands comprises fu |
| 7560894 |
Method and system in connection with permanent magnet synchronous machines |
July 14, 2009 |
| A method and a system in connection with a speed and position sensorless permanent magnet synchronous machine equipped with an output filter and driven by an inverter, which method comprises the steps of forming a speed-adaptive full-order observer based on the dynamic model of the c |
| 7555366 |
Thermal overload protection |
June 30, 2009 |
| A thermal overload protection for an electrical device, particularly an electric motor (M), measures a load current supplied to the electrical device (M), and calculates the thermal load on the electrical device on the basis of the measured load current, and shuts off (S2) a current |
| 7538508 |
Thermal overload protection |
May 26, 2009 |
| A thermal overload protection for an electrical device, particularly an electric motor (M), measures a load current supplied to the electrical device (M), and calculates the thermal load on the electrical device on the basis of the measured load current, and shuts off (S2) a current |
| 7515447 |
Method and arrangement in inverter |
April 7, 2009 |
| A method and arrangement in connection with an inverter that comprises several power semiconductor components and a control apparatus arranged to control them is disclosed. The method comprises the steps of determining the temperature or an electric quantity affecting the temperature |
| 7514933 |
System and method for determining location of phase-to-earth fault |
April 7, 2009 |
| A method and system for determining a location of a phase-to-earth fault in a three-phase electric line of an electric network, the system being configured to monitor current and voltage quantities of the three-phase electric line at a measuring point and calculate a distance (d) between |
| 7508688 |
Method and arrangement for measuring output phase currents of a voltage source inverter under a |
March 24, 2009 |
| A method and arrangement for measuring output phase currents of a voltage source inverter when the inverter is connected to a load, the method comprising, during commissioning of a drive, the steps of forming consecutive voltage pulses to the load by using the inverter, measuring cur |
| 7482942 |
Arrangement and method for starting a machine |
January 27, 2009 |
| An arrangement is disclosed for an industrial drive in which at least one machine or part of machine can be started from a location separate from the machine or part of machine. The arrangement includes an alarm device that can be activated before the part of machine is started. The |
| 7456615 |
Charging arrangement for capacitor means |
November 25, 2008 |
| A capacitor charging arrangement to be supplied by a voltage containing network cycles, and having a gate-controlled semiconductor switch (T.sub.ch) arranged for charging the capacitor (C.sub.aux) and generating a control signal of the gate-controlled semiconductor switch. The control |
| 7446268 |
Lead-through component and method |
November 4, 2008 |
| This invention relates to a lead-through component for a cable. To achieve a lead-through component suitable for cables having a large diameter, the lead-through component includes a shrinkable sleeve that is to be threaded onto a lead-through bushing and whose inner surface is provided |
| 7442100 |
Method and apparatus to control a ship |
October 28, 2008 |
| The invention relates to a method and an apparatus to control a propulsion drive. The propulsion drive comprises at least one first propeller drive, which rotates the first propeller and by which the propulsion power and/or rotating speed of the first propeller, and a second propeller |
| 7432624 |
Rotor for a permanent-magnet electrical machine and a machine for manufacturing it |
October 7, 2008 |
| The object of the invention is a rotor (4) for a permanent-magnet electrical machine, comprising an axle (6) mounted to the machine body with bearings, a rotor pack made of iron and arranged around the axle (6), as well as permanent magnets (10) adapted to the rotor pack, used for fo |
| 7417408 |
Method and arrangement for charging capacitors of direct-voltage intermediate circuit of frequen |
August 26, 2008 |
| A method and an arrangement for charging capacitors of a direct-voltage intermediate circuit of a frequency converter. The arrangement comprises a charging circuit (CCA) comprising a first diode (D1) and a second diode (D2) connected in series with the first diode (D1) and a current-limi |
| 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 |
