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| Number | Title | Issue Date |
| 8179077 | Frequency converter The present invention relates to a frequency converter comprising electric power supply devices for supplying electric power to an electric motor (26) to be connected to the frequency converter, a controller configured to control the electric power supply. In... | 05/15/2012 |
| 8164227 | End shield A cast end shield for an electrical machine, said end shield supporting a bearing that supports the rotor, and said end shield having an opening in the middle. In the radial direction from the centre of the shield, there is an inner rim limited by the opening, an in... | 04/24/2012 |
| D658134 | Disconnector | 04/24/2012 |
| 8159847 | Method and arrangement in connection with a brake chopper A method of controlling a brake chopper and a control arrangement, the brake chopper being connected between the positive and the negative rails of an intermediate voltage circuit feeding an inverter bridge, wherein current measurement means are arranged between a D... | 04/17/2012 |
| 8149604 | Method of controlling a rectifying bridge and a circuit for the control A circuit for controlling a thyristor (V1) into conducting state, the thyristor (V1) being in a rectifier, which rectifier is adapted to supply DC voltage to a DC voltage circuit. The circuit comprises a pulse transformer (T1), means for generat... | 04/03/2012 |
| 8139338 | Load control apparatus A load control apparatus adapted to indirectly detect an overcurrent, i.e. a current magnitude exceeding a predetermined limit value, occurring in an electric conductor element (4) belonging to a load current circuit (20), on the basis of an increase i... | 03/20/2012 |
| 8138932 | Method and apparatus for verifying a leak in connection with a flow inhibitor Exemplary embodiments relate to a method for verifying a leak situation in a liquid transfer system a system and a control unit for implementing the method. The liquid is transferred with a frequency-converter-controlled pump from a lower pressure to a higher pressu... | 03/20/2012 |
| 8134832 | Electric drive An electric drive is disclosed which includes at least a choke unit, a power step unit, and a capacitor unit for implementing power supply to an electricity-consuming device. A cooling arrangement is disclosed for cooling the choke unit, the power step unit, and the... | 03/13/2012 |
| 8134261 | Cooling arrangement for an electrical machine A cooling arrangement is disclosed for an electrical machine in which the main cooling air circulation within the machine is arranged using a centrifugal blower in at least one of the ends of the machine, making the main cooling air circulation flow through at least... | 03/13/2012 |
| D655680 | Switch | 03/13/2012 |
| D655250 | Switch | 03/06/2012 |
| D654878 | Switch | 02/28/2012 |
| D654441 | Switch | 02/21/2012 |
| D653624 | Switch | 02/07/2012 |
| 8106333 | Heated frequency converter assembly A heated frequency converter assembly having a resistor element and/or brake means that are configured to heat the frequency converter assembly to produce a sufficiently high operating temperature and/or to prevent moisture condensation. ... | 01/31/2012 |
| 8097970 | Method and arrangement in wind power plant A method and an arrangement in connection with a wind power plant, an electric drive of the wind power plant comprising two or more partial converters in parallel, which constitute a frequency converter of the electric drive, and each partial converter comprising a ... | 01/17/2012 |
| 8084910 | Rotor structure for a permanent-magnet machine The object of the invention is a rotor for a permanent-magnet synchronous machine in which a pole structure is fitted onto the surface of the rotor body structure facing the air gap. Each of the rotor's pole structures comprises at least one permanent magnet and a s... | 12/27/2011 |
| 8065025 | Configuration of a frequency converter A configuration tool for configuring a frequency converter includes an interface with connector poles for connecting the configuration tool to the frequency converter and feeding configuration data from the configuration tool to the frequency converter. To facilitat... | 11/22/2011 |
| 8064225 | Reactor arrangement A reactor arrangement for alternating electrical currents includes, for each alternating electrical current, different coils (105, 107, 105a, 107a) for positive and negative half-cycles of that alternating electrical current. The negative... | 11/22/2011 |
| 8060234 | Accurate tracking of web features through converting processes There is described a method and apparatus for tracking the location of web features through a converting process, one application of which can involve tracking paper defects from a paper machine as detected by a camera system, to a winder where the sheet is wound to... | 11/15/2011 |
| 8059428 | Reactor arrangement for alternating electrical current A reactor arrangement for alternating electrical current includes different coils (105, 107) for positive and negative half-cycles of the alternating electrical current. The negative and positive half-cycles of the alternating electrical current are directed ... | 11/15/2011 |
| 8049388 | Rotor for a permanent-magnet electrical machine The object of the invention is a rotor for an electrical machine excited by permanent magnets, said rotor comprising a substantially cylindrical magnetic body of the rotor fitted onto the shaft of the electrical machine and a set of permanent magnets used to create ... | 11/01/2011 |
| 8035470 | Protection of permanent magnets in a DC-inductor A DC inductor comprising a core structure (11) comprising one or more magnetic gaps (12), a coil (14) inserted on the core structure (11), at least one permanent magnet (15) positioned in the core structure, the magnetization of th... | 10/11/2011 |
| 8026649 | Rotor for electric machine Electric machine rotor comprising: an inner rotor element and an outer rotor element positioned more outwards in the radial direction than the inner rotor element, the inner rotor element and the outer rotor element being made of a material of high permeance, and an... | 09/27/2011 |
| 8023720 | Method and apparatus for identifying repeated patterns In an exemplary method, repeated patterns are identified in a strip-like product. In the method the strip-like product is observed by at least one camera, and at least one digital image signal comprised of pixels is created for inspection. The image signal is search... | 09/20/2011 |
| 8004836 | Arrangement for a motor controller An arrangement is disclosed for a motor controller, the arrangement including a number of power semiconductors and cooling elements, the cooling elements being connected to the power semiconductors for cooling them. The power semiconductors and the cooling elements ... | 08/23/2011 |
| 8000501 | Method and product for detecting abnormalities A new method for processing image data in order to detect abnormalities in a web is provided. The web is monitored by at least one camera, whereby an image comprising of plurality of pixels is generated. The data of the image is stored in a memory. Image data is fil... | 08/16/2011 |
| D643373 | Switch | 08/16/2011 |
| D642991 | Switch | 08/09/2011 |
| 7987016 | Method for optimization of subsequent treatment processes in production planning A method for optimization of subsequent treatment processes is developed. End products having end product data are generated from semi-manufactured products having semi-manufactured product data, and at least part of the semi-manufactured products are processed at l... | 07/26/2011 |
| 7969264 | Choke device for frequency converter A choke device for a frequency converter, comprising three windings composed of conductors wound around three substantially parallel axes (A, B, C), respectively, the windings being located triangularly with respect to each other in such a manner that, when the chok... | 06/28/2011 |
| 7969112 | Stator resistance adaptation in sensorless PMSM drives A method of estimating stator resistance of a permanent magnet synchronous machine, when the permanent magnet synchronous machine is controlled with an inverter using a control system having an adaptive observer which is augmented with a signal injection, the adapti... | 06/28/2011 |
| 7968914 | Multi-component electrical module A mechanical construction of an electrical module includes two or more electrical components (102-105). Each of the electrical components has a contact surface (106-109) that is capable of forming a galvanic contact with an external elect... | 06/28/2011 |
| 7924583 | Method and arrangement in connection with inverter A method and an arrangement for controlling an inverter provided with a voltage intermediate circuit, the inverter (1) comprising two or more sub-inverters (1A, 1B, 1C), each being connected with a specific cable to feed a common load ( | 04/12/2011 |
| 7911171 | Device for generating analog current or voltage signal In a device, such as measuring or control signal transmitter, generating an analog current or voltage output signal, absolute values of output variables are continuously measured and regulated to ensure the correctness of the signal. The actual current or voltage va... | 03/22/2011 |
| 7908735 | Method and installation means for installing an electrical machine The object of the invention is a method and installation means for installing an electrical machine, particularly for installing a rotor within a stator. According to the invention, two or more spacer elements (32) are fitted on the outer circumference of the... | 03/22/2011 |
| 7889040 | DC inductor A DC inductor comprising a core structure (11) comprising one or more magnetic gaps (12, 13), a coil (14) wound on the core structure (11), at least one permanent magnet (15) positioned in the core structure, the magnetization of t... | 02/15/2011 |
| 7888986 | Method of controlling a rectifying bridge in a diode mode and a circuit for the control A method and a circuit for controlling a thyristor (V1) into conducting state, the thyristor (V1) being in a rectifier, which rectifier supplies DC voltage to a DC voltage circuit. The circuit comprising a trigger capacitor (C2) adapted to be ch... | 02/15/2011 |
| 7884582 | Method and device in frequency converter A method in connection with a frequency converter for correcting the power factor of the frequency converter, and a power factor correction unit. The method includes connecting the power factor correction unit between a rectifier bridge of the frequency converter an... | 02/08/2011 |
| 7868619 | Method and arrangement for monitoring connections of switch intended for activating safety function A method and an arrangement are disclosed for monitoring connections of a switch intended for activating a safety function, the switch having at least two poles. The arrangement can supply voltages to first sides of two poles of the switch through first connections,... | 01/11/2011 |
