Patents by Inventor Pekka Kanninen
Pekka Kanninen 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: 9859762Abstract: An electric machine can include a stator, a rotor frame and a pole arrangement with: plural segment pieces disposed circumferentially around, and fastened to, the rotor frame; permanent magnet pieces positioned on inclined side edges of each segment piece; and plural pole pieces disposed circumferentially around the rotor frame and disposed alternatingly with the segment pieces. The magnet pieces are pressed between inclined side edges of the pole pieces and the inclined side edges of the segment pieces. The segment pieces, the permanent magnet pieces and the pole pieces form a closed ring around the outer surface of the rotor frame, with plural such rings being arranged after each other in an axial direction. An axial air channel can pass through the rings, and at least one radial air duct (R1, R2) between the rings.Type: GrantFiled: October 28, 2014Date of Patent: January 2, 2018Assignee: ABB Schweiz AGInventors: Ari Vartiainen, Pekka Kanninen, Petri Mäki-Ontto
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Publication number: 20150061427Abstract: An electric machine can include a stator, a rotor frame and a pole arrangement with: plural segment pieces disposed circumferentially around, and fastened to, the rotor frame; permanent magnet pieces positioned on inclined side edges of each segment piece; and plural pole pieces disposed circumferentially around the rotor frame and disposed alternatingly with the segment pieces. The magnet pieces are pressed between inclined side edges of the pole pieces and the inclined side edges of the segment pieces. The segment pieces, the permanent magnet pieces and the pole pieces form a closed ring around the outer surface of the rotor frame, with plural such rings being arranged after each other in an axial direction. An axial air channel can pass through the rings, and at least one radial air duct (R1, R2) between the rings.Type: ApplicationFiled: October 28, 2014Publication date: March 5, 2015Inventors: Ari VARTIAINEN, Pekka Kanninen, Petri Mäki-Ontto
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Patent number: 8878404Abstract: In an arrangement for cooling an electrical machine, the electrical machine includes a rotor and a stator located at the end of an air gap from the rotor. The rotor includes at least one axial cooling channel originating from the first end of the rotor that is connected to at least two axially successive cooling channels that are substantially radial within the rotor. The stator is made of sheets using axially successive core modules. The stator includes a radial cooling channel between two core modules. Gaseous cooling agent is led to the cooling channels of the rotor and stator from the end of the rotor. The outer surface of the stator core module includes a cooling jacket by the length (L) of the stator core module at maximum, and liquid cooling agent is led to the cooling jacket.Type: GrantFiled: December 15, 2010Date of Patent: November 4, 2014Assignee: ABB Technology AGInventors: Petri Mäki-Ontto, Yrjö Tyllinen, Pekka Kanninen
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Publication number: 20140183990Abstract: A method and an arrangement for cooling an electric machine, including an electric machine and at least one blower connected to an axle of the electric machine for blowing a cooling agent into the electric machine or for sucking it from the electric machine, wherein the at least one blower is a side channel blower.Type: ApplicationFiled: March 4, 2014Publication date: July 3, 2014Applicant: ABB Technology AGInventor: Pekka KANNINEN
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Patent number: 8760024Abstract: In an arrangement in accordance with the invention for attaching a permanent magnet to an electrical machine's rotor, the rotor comprises at least two magnetic poles, and there is a pole gap between two magnetic poles. Permanent magnets are installable on the surface of the magnetic core. A pole piece is installable on the permanent magnet side facing the air gap. There is fixing means on the sides of the pole piece facing the pole gap for attaching the pole piece to the rotor using the locking parts, and the fixing means are connected to the pole piece through an articulated joint.Type: GrantFiled: May 5, 2010Date of Patent: June 24, 2014Assignee: ABB Technology AGInventors: Petri Mäki-Ontto, Yrjö Tyllinen, Pekka Kanninen
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Patent number: 8664821Abstract: An arrangement for attaching a permanent magnet to the rotor of an electrical machine and such a rotor are provided. The rotor is assembled of sheets and includes at least two magnetic poles and a magnetic core. Permanent magnets are installable on a surface of the magnetic core, and a pole piece assembled of sheets is installable on a side of the permanent magnet that faces an air gap. At least one channel passing through the pole piece is built in the pole piece and magnetic core. A tightening strip is installable in the channel. The tightening strip is attachable to the pole piece using locking parts, and an end of the tightening strip facing the magnetic core includes fixing parts for attaching the tightening strip to the magnetic core.Type: GrantFiled: November 28, 2011Date of Patent: March 4, 2014Assignee: ABB Technology AGInventors: Ari Vartiainen, Petri Mäki-Ontto, Pekka Kanninen
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Publication number: 20130009496Abstract: In an arrangement for cooling an electrical machine, the electrical machine includes a rotor and a stator located at the end of an air gap from the rotor. The rotor includes at least one axial cooling channel originating from the first end of the rotor that is connected to at least two axially successive cooling channels that are substantially radial within the rotor. The stator is made of sheets using axially successive core modules. The stator includes a radial cooling channel between two core modules. Gaseous cooling agent is led to the cooling channels of the rotor and stator from the end of the rotor. The outer surface of the stator core module includes a cooling jacket by the length (L) of the stator core module at maximum, and liquid cooling agent is led to the cooling jacket.Type: ApplicationFiled: December 15, 2010Publication date: January 10, 2013Applicant: ABB OyInventors: Petri Mäki-Ontto, Yrjö Tyllinen, Pekka Kanninen
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Publication number: 20120133233Abstract: An arrangement for attaching a permanent magnet to the rotor of an electrical machine and such a rotor are provided. The rotor is assembled of sheets and includes at least two magnetic poles and a magnetic core. Permanent magnets are installable on a surface of the magnetic core, and a pole piece assembled of sheets is installable on a side of the permanent magnet that faces an air gap. At least one channel passing through the pole piece is built in the pole piece and magnetic core. A tightening strip is installable in the channel. The tightening strip is attachable to the pole piece using locking parts, and an end of the tightening strip facing the magnetic core includes fixing parts for attaching the tightening strip to the magnetic core.Type: ApplicationFiled: November 28, 2011Publication date: May 31, 2012Applicant: ABB OYInventors: Ari VARTIAINEN, Petri Mäki-Ontto, Pekka Kanninen
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Publication number: 20120098377Abstract: In an arrangement in accordance with the invention for attaching a permanent magnet to an electrical machine's rotor, the rotor comprises at least two magnetic poles, and there is a pole gap between two magnetic poles. Permanent magnets are installable on the surface of the magnetic core. A pole piece is installable on the permanent magnet side facing the air gap. There is fixing means on the sides of the pole piece facing the pole gap for attaching the pole piece to the rotor using the locking parts, and the fixing means are connected to the pole piece through an articulated joint.Type: ApplicationFiled: May 5, 2010Publication date: April 26, 2012Applicant: ABB OyInventors: Petri Mäki-Ontto, Yrjö Tyllinen, Pekka Kanninen
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Patent number: 7732964Abstract: A permanent magnet unit is provided for an electrical machine. The electrical machine includes a stator and rotor. At least one permanent magnet is enclosed in a non-magnetic enclosure. The enclosure has means for connecting it to at least one other substantially similar enclosure containing a permanent magnet.Type: GrantFiled: December 10, 2008Date of Patent: June 8, 2010Assignee: ABB OyInventor: Pekka Kanninen
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Patent number: 7687958Abstract: A permanent magnet module to be installed in a rotor includes at least two permanent magnets with the first magnetic pole on the first plane surface and the second magnetic pole on the second plane surface, and a cover at least partially enveloping the permanent magnets. The cover of the module is magnetically conductive and includes a top surface, substantially covering the first plane surface of the permanent magnet, and a bottom surface, substantially covering the second plane surface of the permanent magnet. The cover is at least partially open at the side surfaces of the permanent magnet. Also disclosed is a rotor for an electrical machine, the rotor having permanent magnets fitted into a corresponding module.Type: GrantFiled: December 11, 2008Date of Patent: March 30, 2010Assignee: ABB OyInventors: Petri Mäki-Ontto, Pekka Kanninen, Tony Björkstrand
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Publication number: 20090146521Abstract: The object of the invention is a permanent magnet module comprising at least two permanent magnets with the first magnetic pole on the first plane surface and the second magnetic pole on the second plane surface, and a cover at least partially enveloping the permanent magnets. According to the invention the cover of the module is magnetically conductive and comprises a top surface, substantially covering the first plane surface of the permanent magnet, and a bottom surface, substantially covering the second plane surface of the permanent magnet. The cover is at least partially open at the side surfaces of the permanent magnet. Another object of the invention is a rotor for an electrical machine, the rotor having permanent magnets fitted into a corresponding module.Type: ApplicationFiled: December 11, 2008Publication date: June 11, 2009Applicant: ABB OYInventors: Petri MAKI-ONTTO, Pekka Kanninen, Tony Bjorkstrand
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Publication number: 20090146520Abstract: In a permanent magnet unit according to the invention, designed for an electrical machine comprising a stator and rotor, at least one permanent magnet (2) is enclosed in a non-magnetic enclosure (3). The enclosure has means (5a, 5b) for connecting it to at least one other substantially similar enclosure (3) containing a permanent magnet.Type: ApplicationFiled: December 10, 2008Publication date: June 11, 2009Applicant: ABB OYInventor: Pekka Kanninen