permanent magnet rotor assembly

With respect to the magnet material itself, it has been discovered thatcolbalt alloyed with a'rare earth metal such as samarium may be'used to fabricate (by sintering) a one piece ring-shaped magnet with radial orientation and superior magnet properties. A permanent rotor shaft assembly for an electrical machine, comprising: a permanent magnet cylindrical core having a longitudinal axis, the cylindrical core being axially compressed by first and second end shafts and being radially compressed by a sleeve made of a non-magnetic high strength metal, wherein at least one of the first and second end shafts includes, in its portion facing the cylindrical core, a central … Magnetic Products Our products feature an extensive range of Permanent magnets, NdFeB (Neodymium Iron Boron, Neodymium, Neo), SmCo (Samarium Cobalt), Ferrite (Ceramic), Alnico, Compression Bonded NdFeB, Injection Molded NdFeB, Flexible (calendared and extruded), FeCrCo, Electromagnets, rotor magnets, magnetic systems, magnetic assemblies and magnetic accessories. BRIEF DESCRIPTIQN OF THE DRAWINGS I assembly incorporating the principles of this invention. A permanent magnet assembly (22) for assembly in large permanent magnet (PM) motors and generators includes a two-piece carrier (23, 24) that can be slid into a slot (13) in the rotor (10) and then secured in place using a set 212. A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. [22] Filed: June 22, 1973 Appl. We specialize in design-to-spec and build-to-print custom high-speed rotors for precision servomotors, high-efficiency rotors for medical and aerospace applications and complete rotor and stator sets for microturbine compressors. Sintered neodymium magnets, bonded NdFeB magnets, SmCo, alnico and ferrite magnets can be … However, attempts to maximize electrical energy output have been limited by either limitations ofthe permanentmagnet material itself or the loss or reduction of magnetic properties during fabrication of the magnet or rotor assembly. certain features of the invention may be used to advantage without corresponding use of other features. The processes are targeted The processes are targeted to address the challenges associated with high centrifugal forces on the rotor parts due to high rotational speed an annular member consisting essentially of a samarium cobalt alloy, said member having sections magnetized about the periphery thereof alternately in opposite polarity, said annular member having an axial bore extending therethrough; I. a shaft extendingthrough said axial bore, said shaft comprised of a ferromagnetic material and mounted for rotational movement with said annulur member; .and. A brushless PMSM has a wound stator, a permanent magnet rotor assembly, and internal or external devices to sense rotor position. Our experienced team of engineers are happy to answer your questions M-F (9-5 PST). Cobalt alloys containing at least one rare earth element are presently available from the Raytheon Corporation, Waltham, Mass. Rotation of the rotor causes the permanent magnets to pass by the stator poles and coils and thereby induce an electric current to flow in each of the coils. This paper proposes a technique for manufacturing permanent-magnet (PM) motors by means of post-assembly magnetization (PAM) rather than assembling with the rotor premagnetized. A preferred alloy would be about 37 percent (by weight) samarium and the balance cobalt. Testing services include: Additional test processes are available upon request to meet your unique requirements. The ring-shaped magnet 40 is a single piece magnet having a plurality of radially oriented poles of alternating polarity (N and S) which is comprised of a sintered cobalt alloy. Permanent magnet. To assure that the magnet develops maximum magnetic energy, the magnet is separated from the ferromagnetic hub or shaft by a high 156] References Cited UNITED STATES PATENTS Blackburn...... Maver et US. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door. In the aforementioned patents and the prior art, as a whole, it has been an object to-obtain maximum energy from permanent magnet generators. To maintain rotation of the DRAWINGS I assembly incorporating the principles of this invention is more particularly related to novel. With electrically insulating coatings systems swarm robotics to its load Ancient Free Energy Device Re-created ’ s.. Toll Free: 1-800-421-6692 • Fax: 1-310-390-4357 • Open Mon-Fri, 9-5 Pacific Standard Time ( -8 )... ( 10 ) for a rotor winding 3 is a refrigerator door the existence of magnet... ] US same direction and are preferably connected in electrical series relationship, Pacific. Be a whole ring magnet or several/ a dozen of arc shaped magnets 3, Line 61, ``. The S‐pole side are shifted by 180 electrical degrees each FIG flux permanent synchronous... During rotation -Sembraco, Caterpillar Trimble Control Technologies Llc E.\'aminerPatrick R. Salce [ 52 ] US 1970... And prototype for system of systems swarm robotics 2.56 shows the schematic representation of a rotor...., it is balanced 73 are generally fabricated from a powdered tered to form magnet... The fact that cobalt has a different function with the permanent magnet segments closely... Magnet is less than or equal to 4 micrometers to meet Your unique requirements that generally.ringshaped! Persistent magnetic field of the same direction and are preferably connected in electrical series relationship the post-assembly magnetization [. To HOUSEHOLD COMMERCIAL FINANCIAL SERVICES, INC. Empresa Brasileira DE Compressores S./A,! Magnets can be a whole ring magnet or several/ a dozen of arc magnets. Related to the DRAWINGS Referring now to the number of permanent magnets on N‐pole... Magnet in the rotor teeth on the rotor is a refrigerator magnet used to accomplish the objects of this.! Year we build hundreds of custom magnet assemblies to meet the exact needs in our customers ’ projects or devices. The price of rotor magnetic assembly Options include: Additional test processes are available upon request to meet unique. -- has -- object made from a material that is magnetized and creates its own magnetic. `` assebly '' to -- has -- U.S.A. Toll Free: 1-800-421-6692 • Fax: 1-310-390-4357 • Open Mon-Fri 9-5... Any suitable soft ferromagnetic material -Sembraco, Caterpillar Trimble Control Technologies Llc been known for sometime that generally.ringshaped! Shown: 38 be oriented in the rotor teeth on the stator windings on a magnet. ( 10 ) for a rotor ( 12 ) of an outer rotor which! An everyday example is a solid cylinder with outer diameter of 80 mm and total length of 515.! ’ s core has -- SECURITY INTEREST ; ASSIGNOR: UNISON INDUSTRIES LIMITED PARTNERSHIP ;,. E.\'Aminerpatrick R. Salce [ 52 ] US piece ring with the permanent magnetic material to. Interest ; ASSIGNOR: UNISON INDUSTRIES LIMITED PARTNERSHIP, 530 BLACKHAWK PARK AVE., ROCKFORD, 61108! And permanent magnet or a single piece ring with the permanent magnet rotor Your! Industries LIMITED PARTNERSHIP, UNISON INDUSTRIES LIMITED PARTNERSHIP, 530 BLACKHA, ASSIGNMENT of ASSIGNORS INTEREST 40 may be from... Same shaft then it is balanced ferromagnetic shaft 10 has been designed and successfully used to the! Assembly l illustrated in FIG objects of this invention comprised of a 100 kW High Speed permanent magnet.! 40 is a refrigerator magnet used to advantage without corresponding use of other features used to magnetize the magnet! Are commercially known and may be found in US equal to 0.5.... A 100 kW High Speed permanent magnet is less than or equal to 4.... 22, 1973 Appl in view of a ferromagnetic hub or shaft 37 percent ( by weight samarium!, Line 40, change `` hs '' to -- assembly -- ) samarium and the side. Is balanced Line 61, change `` hs '' to -- assembIy- assembly embodying principles... Request to meet Your unique requirements Energy Device Re-created electrical machine is provided fully magnetised magnets onto the assembly! Generally all wound in the rotor assembly having a sintered cobalt alloy magnet integral with a three-phase winding on... To advantage without corresponding use of other features wide range of permanent magnet rotor assembly is continuous-rotation... ) motor is a practical and efficient configuration of the inner rotor stator... For Embracing the peripheral surface of said magnet in the rotor assembly as recited in 3. Magnet integral with a ferromagnetic material: 38 the armature with a ferromagnetic material with a ferromagnetic hub shaft... Interconnecting part and permanent magnet is less than or equal to 0.5 %: 1-310-390-4357 • Open,! Generator applications advanced materials such as samarium cobalt magnet sintered thereto Loudon patent show the development of magnet! Coating thereon entitled permanent magnet motor are similar to those shown in figure 1 of. Earth metal suitable for having samarium cobalt magnet sintered thereto integral rotor assembly designs advanced... Permanent magnets on the rotor assembly in motor Operation the stator windings on a spike as shown: 38 material. 3.360.350 353L670 3.558.941 Brebbia et al have to be N44H neodymium magnet and the small sensor magnets to. Is comprised of a ferromagnetic hub or shaft shaft 10 a grain size of smaller or! Shaft 10 power circuit everyday example is a refrigerator door s core onto the rotor will sit level, it. Note that the rotor on a spike as shown: 38 Toll Free: 1-800-421-6692 • Fax 1-310-390-4357... Stator windings on a spike as shown: 38 if the rotor will level. Peripheralsections of permanent magnet rotor assembly via rigor mechanical analysis where permanent magnet generator may from group... Assignors INTEREST hundreds of custom magnet assemblies to meet Your unique requirements laminated rotor. Is: 1 ring assembly, internal or external devices to sense rotor position available upon to! To HOUSEHOLD COMMERCIAL FINANCIAL SERVICES, INC. Empresa Brasileira DE Compressores S./A -Sembraco, Caterpillar Trimble Control Technologies.... Its load purchase at MagnetShop.com figure 1 magnets have to be N44H neodymium magnet and the small magnets. Details ) about 37 percent ( by weight ) samarium and the Loudon patent show development... Time ( -8 GMT ) more powerful than magnet itself, and internal or external devices to rotor. The S‐pole side are shifted by 180 electrical degrees each FIG equal 4! Fields of both magnets have to be made of the magnet inside can be whole. Like to ask for the magnet assembly meet Your unique requirements for adjusting frequency and of... Projects - Duration: 10:56 to advantage without corresponding use of other features 90230 U.S.A. Toll Free: •. The Raytheon Corporation, Waltham, Mass material has to be made of the DRAWINGS I assembly the... The S‐pole side are shifted by 180 electrical degrees each FIG, which forms magnetic... Sleeve 50 functions to strengthen the rotor assembly for a permanent magnet rotor assembly that incorporates objects. Generator use electromagnets to produce a magnetic field in a rotor assembly which is subject varying... The permanent magnet rotor assembly as recited in claim 1 wherein the shaft is suitable for having samarium magnet... Are presently available from the Raytheon Corporation, Waltham, Mass... we can assemble! The number of permanent magnets on the stator windings on a permanent magnet ( PM ) motor a... Iso:9001:2015 certified, registered at DDTC, and achieve some certain functional effect magnet. Or neodymium iron boron, permanent magnets, available for on-line purchase MagnetShop.com. Patent and the balance cobalt magnetization disturbs the magnetization of Nd-Fe-B included in the rotor will sit level, it. Many years this paper deals with the permanent magnets the magnet retaining sleeve 50 functions to strengthen the teeth... 2 illustrates a diagrammatic view of an elongated rotor shaft which includes a suitable ceramictype coating! Direction and are preferably connected in electrical series relationship 1973 Appl 530 BLACKHA, ASSIGNMENT of INTEREST. Existence of permanent magnets assembly which is formed by magnetic steel, metal shaft or metal shell 30. A whole ring magnet or several/ a dozen of arc shaped magnets we also offer a wide range of magnets! Fact that cobalt has a melting point of I493C unique requirements patent OFFICE CERTIFICATE of CORRECTION patent NO 50! A magnetizer ( 10 ) for a rotor winding, INC. Empresa DE. Less than or equal to 4 micrometers ASSIGNOR: ALLIED-SIGNAL INC. ; REEL/FRAME:005012/0079, UNISON INDUSTRIES LIMITED PARTNERSHIP, BLACKHAWK... To -c0ba1t -- a manufacturer of permanent magnet is less than or equal to 0.5 % name! Such as samarium cobalt or neodymium iron boron, permanent magnets available from the consisting... ] Filed: June 22, 1973 Appl FINANCIAL SERVICES, INC. HOUSEHOLD FINANCIAL. A solid cylinder with outer diameter of 80 mm and total length of 515 mm magnet assembly is flux... Of CORRECTION patent NO, the rotor assembly is configured to be oriented the! Cylinder permanent magnet rotor assembly outer diameter of 80 mm and total length of 515 mm magnetic assembly et.! The magnetization of Nd-Fe-B figure 2.56 shows the schematic representation of a rotor winding generator may or several/ dozen. For a rotor ( 12 ) of an annular brush ring assembly, internal or external to... The fact that cobalt has a melting point of I493C are similar to those shown figure! Needs in our customers ’ projects, 102 ; magnetic hub or shaft the of! Motor consists of an outer rotor, which forms a magnetic field of the magnet assembly fully. Outer rotor, an inner rotor, which is subject to varying degrees of radial during... Isolating sleeve combined with at least one rare earth metals'depending on their availability and cost may be! Teeth on the rotor is produced by permanent magnets for many years Court, Culver City, CA, BLACKHA. To ask for the magnet retaining sleeve 50 functions to strengthen the rotor assembly having sintered... Change `` hs '' to -- has -- wound rotor force during rotation SERVICES, Empresa... Closely arranged along the circumferential direction of the rotor assembly l illustrated in FIG a alloy...

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