Patents by Inventor Olli Liukkonen
Olli Liukkonen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11781943Abstract: An arrangement for monitoring an antifriction bearing of a rotating shaft of a rotating electric machine. The arrangement includes: one or more capacitor electrodes to measure a capacitive shaft displacement parameter; one or more of the following additional measurement sensors; a microphone to measure a bearing noise parameter, a voltage sensor to measure a bearing current parameter, and/or an optical pyrometer to measure a shaft heat parameter; and one or more processors configured to evaluate a condition of the antifriction bearing based on the capacitive shaft displacement parameter and one or more of the following: the bearing noise parameter, the bearing current parameter, and/or the shaft heat parameter.Type: GrantFiled: May 1, 2020Date of Patent: October 10, 2023Assignee: ABB Schweiz AGInventors: Jari Jäppinen, Olli Liukkonen, Timo Holopainen, Markku Niemelä, Ville Särkimäki
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Publication number: 20230016864Abstract: A field of electric drive devices, drivetrain systems and electric machines, such as electric motors and electric generators for industrial applications, and more particularly to a method, an arrangement, and a frequency converter for identification of torsional natural frequencies of a drivetrain system.Type: ApplicationFiled: July 15, 2022Publication date: January 19, 2023Inventors: Timo Holopainen, Olli Liukkonen, Markku Niemelä
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Publication number: 20230017735Abstract: A field of electric drive devices and electric machines, such as electric motors and electric generators for industrial applications, and more particularly to a method, an arrangement and a frequency converter for controlling lateral vibration of an electric machine. The arrangement of the present invention for controlling lateral vibration of an electric machine includes a frequency converter, one or more vibration sensors and an electric machine, wherein the one or more vibration sensors is/are arranged for measuring the lateral vibration from the electric machine and for producing measured vibration data; and wherein the frequency converter is arranged for generating a control torque for exerting the control torque on the stator of the electric machine, the control torque being determined utilizing the measured vibration data.Type: ApplicationFiled: July 15, 2022Publication date: January 19, 2023Inventors: Timo Holopainen, Olli Liukkonen, Janne Roivainen, Tommi Ryyppö, Aron Szucs
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Publication number: 20200256763Abstract: An arrangement for monitoring an antifriction bearing of a rotating shaft of a rotating electric machine. The arrangement includes: one or more capacitor electrodes to measure a capacitive shaft displacement parameter; one or more of the following additional measurement sensors; a microphone to measure a bearing noise parameter, a voltage sensor to measure a bearing current parameter, and/or an optical pyrometer to measure a shaft heat parameter; and one or more processors configured to evaluate a condition of the antifriction bearing based on the capacitive shaft displacement parameter and one or more of the following: the bearing noise parameter, the bearing current parameter, and/or the shaft heat parameter.Type: ApplicationFiled: May 1, 2020Publication date: August 13, 2020Inventors: Jari Jäppinen, Olli Liukkonen, Timo Holopainen, Markku Niemelä, Ville Särkimäki
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Patent number: 9525320Abstract: An electromechanical device having a mechanical interface structure for connecting to an external rotating element, an electrical machine, and one or more gear stages on a mechanical power transmission path between the mechanical interface structure and a rotor of the electrical machine. The electromechanical device also has bearings for connecting the rotor of the electrical machine rotatably to the structure of the electromechanical device. The bearings carry the axial and radial forces of the rotor, and at least partly the axial and radial forces of the driving shaft of the gear stage, directly connected to the rotor.Type: GrantFiled: May 6, 2011Date of Patent: December 20, 2016Assignees: MOVENTAS GEARS OY, THE SWITCH DRIVE SYSTEMS OYInventors: Tuomas Vuolle-Apiala, Jorma Tirkkonen, Ville Pakarinen, Jari Toikkanen, Olli Liukkonen, Jorma Mustalahti, Ilkka Martikainen
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Patent number: 9464691Abstract: An electromechanical device comprises a mechanical interface structure (101) for connecting to an external rotating element, for example a wind turbine. The device comprises an electrical machine (102-104), and one or more gear stages (105-112) on a power transmission path between the mechanical interface structure and a rotor of the electrical machine. The device further comprises mechanical structures (113-115) constituting a common lubricant oil room for both the gear stages and the electrical machine. The electromechanical device comprises oil channels (116a) for directing lubricant oil circulated in the device to flow via the gear stages and via bearings (118, 119) of the electrical machine. Therefore, a common lubricating system can be used for both the gear stages and the electrical machine.Type: GrantFiled: May 6, 2011Date of Patent: October 11, 2016Assignees: The Switch Drive Systems Oy, Moventas Gears OYInventors: Tuomas Vuolle-Apiala, Jorma Tirkkonen, Ville Pakarinen, Jari Toikkanen, Olli Liukkonen, Jorma Mustalahti, Ilkka Martikainen
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Patent number: 8841815Abstract: A method for installing a rotor of an electrical machine is disclosed. The method comprises using axially directed guide bars (107-109) for keeping the rotor (102) centered with respect to a bore of a stator (101) during the installation of the rotor. The rotor has sliding surfaces so that it can be slid in the axial direction to its final position along the guide bars. The mechanical support structure (104) that supports bearings (105, 106) of the rotor are provided with supporting surfaces for being able to give mechanical support to the guide bars. The mechanical support structure (104) may comprise for example threaded holes to which threaded ends of the guide bars can be tightened. After the rotor has been moved to its final position and it is supported by the bearings, the guide bars are removed.Type: GrantFiled: May 6, 2011Date of Patent: September 23, 2014Assignees: The Switch Drive Systems Oy, Moventas Gears OyInventors: Tuomas Vuolle-Apiala, Jorma Tirkkonen, Ville Pakarinen, Jari Toikkanen, Olli Liukkonen, Jorma Mustalahti, Ilkka Martikainen
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Patent number: 8629591Abstract: An electromechanical device having a mechanical interface structure for connecting to an external rotating element, an electrical machine, and one or more gear stages on a mechanical power transmission path between the mechanical interface structure and a rotor of the electrical machine. The rotor of the electrical machine is supported by the frame of the gear stage directly connected to the rotor.Type: GrantFiled: May 6, 2011Date of Patent: January 14, 2014Assignee: Moventas Gears OyInventors: Tuomas Vuolle-Apiala, Jorma Tirkkonen, Ville Pakarinen, Jari Toikkanen, Olli Liukkonen, Jorma Mustalahti, Ilkka Martikainen
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Publication number: 20110273045Abstract: A method for installing a rotor of an electrical machine is disclosed. The method comprises using axially directed guide bars (107-109) for keeping the rotor (102) centered with respect to a bore of a stator (101) during the installation of the rotor. The rotor has sliding surfaces so that it can be slid in the axial direction to its final position along the guide bars. The mechanical support structure (104) that supports bearings (105, 106) of the rotor are provided with supporting surfaces for being able to give mechanical support to the guide bars. The mechanical support structure (104) may comprise for example threaded holes to which threaded ends of the guide bars can be tightened. After the rotor has been moved to its final position and it is supported by the bearings, the guide bars are removed.Type: ApplicationFiled: May 6, 2011Publication date: November 10, 2011Applicants: MOVENTAS WIND OY, THE SWITCH DRIVE SYSTEM OYInventors: Tuomas Vuolle-Apiala, Jorma Tirkkonen, Ville Pakarinen, Jari Toikkanen, Olli Liukkonen, Jorma Mustalahti, Ilkka Martikainen
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Publication number: 20110273064Abstract: An electromechanical device comprising a mechanical interface structure (101) for connecting to an external rotating element, an electrical machine (102-104), and one or more gear stages (105-112) on a mechanical power transmission path between the mechanical interface structure and a rotor (103) of the electrical machine, wherein the rotor (103) of the electrical machine is supported by the frame of the gear stage directly connected to the rotor.Type: ApplicationFiled: May 6, 2011Publication date: November 10, 2011Applicants: THE SWITCH DRIVE SYSTEMS OY, MOVENTAS WIND OYInventors: Tuomas VUOLLE-APIALA, Jorma Tirkkonen, Ville Pakarinen, Jari Toikkanen, Olli Liukkonen, Jorma Mustalahti, Ilkka Martikainen
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Publication number: 20110273063Abstract: An electromechanical device comprising a mechanical interface structure (101) for connecting to an external rotating element, an electrical machine (102-104, 117), and one or more gear stages (105-112) on a mechanical power transmission path between the mechanical interface structure and a rotor of the electrical machine, wherein the electromechanical device further comprises a bearing means (118, 119) for connecting the rotor (103) of the electrical machine rotatably to the structure of the electromechanical device, which bearing means carry the axial and radial forces of the rotor and at least partly the axial and radial forces of the driving shaft (112) of the gear stage directly connected to the rotor.Type: ApplicationFiled: May 6, 2011Publication date: November 10, 2011Applicants: THE SWITCH DRIVE SYSTEMS OY, MOVENTAS WIND OYInventors: Tuomas Vuolle-Apiala, Jorma Tirkkonen, Ville Pakarinen, Jari Toikkanen, Olli Liukkonen, Jorma Mustalahti, Ilkka Martikainen
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Publication number: 20110272214Abstract: An electromechanical device comprises a mechanical interface structure (101) for connecting to an external rotating element, for example a wind turbine. The device comprises an electrical machine (102-104), and one or more gear stages (105-112) on a power transmission path between the mechanical interface structure and a rotor of the electrical machine. The device further comprises mechanical structures (113-115) constituting a common lubricant oil room for both the gear stages and the electrical machine. The electromechanical device comprises oil channels (116a) for directing lubricant oil circulated in the device to flow via the gear stages and via bearings (118, 119) of the electrical machine. Therefore, a common lubricating system can be used for both the gear stages and the electrical machine.Type: ApplicationFiled: May 6, 2011Publication date: November 10, 2011Applicants: MOVENTAS WIND OY, THE SWITCH DRIVE SYSTEMS OYInventors: Tuomas Vuolle-Apiala, Jorma Tirkkonen, Ville Pakarinen, Jari Toikkanen, Olli Liukkonen, Jorma Mustalahti, IIkka Martikainen