# US 2013/0278102 A1 · Magnetic rotor arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0278102 A1 - Document ID: US20130278102A1 - Status: Published application - Kind: A1 - Application number: 13/800,516 - Filed: 2013-03-13 - Published: 2013-10-24 - Earliest claimed: 2012-04-20 - Assignees: Healey Magnetics, LLC - Inventors: Evan LEVY - Web page: https://patentgrep.com/patent/US20130278102A1 ## CPC - H02K 1/2791: Surface mounted magnets; Inset magnets - H02K 3/28: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) - H02K 7/11: with dynamo-electric clutches - H02K 16/00: Machines with more than one rotor or stator {(machines for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts H02K51/00; permanent magnet machines with multiple rotors or stators relatively rotated for vectorially combining the excitation fields or the armature voltages H02K21/029)} - H02K 16/02: Machines with one stator and two {or more} rotors - H02K 49/102: {Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact (magnetized gearings with physical contact F16H13/12, F16H49/005)} - H02K 51/00: Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts - Y02E 10/72: Wind turbines with rotation axis in wind direction - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A magnetic rotor arrangement is provided, having a primary rotor comprising an array of magnets arranged to provide alternating polarity around the outside of the primary rotor and at least one auxiliary rotor comprising an array of magnets arranged to provide alternating polarity around the outside of the auxiliary rotor. The primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor. ## Claims ### Claim 1 A magnetic rotor arrangement comprising: a primary rotor comprising an array of magnets, wherein the magnets of the primary rotor are arranged to provide alternating polarity around the outside of the primary rotor; and at least one auxiliary rotor comprising an array of magnets, wherein the magnets of each auxiliary rotor are arranged to provide alternating polarity around the outside of the auxiliary rotor; wherein each auxiliary rotor is positioned on the outside of the primary rotor such that the array of magnets of each auxiliary rotor is positioned to be magnetically influenced by the array of magnets of the primary rotor; and wherein the primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor. ### Claim 2 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the array of magnets of the primary rotor generally forms an equiangular and equilateral polygon having an even number of sides. ### Claim 3 (depends on 2) A magnetic rotor arrangement according to claim 2, wherein the array of magnets of the primary rotor forms one of a hexagon, octagon, decagon, or dodecagon. ### Claim 4 (depends on 2) A magnetic rotor arrangement according to claim 2, wherein each side of the polygon of the primary rotor is formed by one magnet. ### Claim 5 (depends on 2) A magnetic rotor arrangement according to claim 2, wherein each side of the polygon of the primary rotor is formed by more than one magnet. ### Claim 6 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the array of magnets of the primary rotor generally forms a circle. ### Claim 7 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the magnetic rotor arrangement comprises a plurality of auxiliary rotors. ### Claim 8 (depends on 7) A magnetic rotor arrangement according to claim 7, wherein the number of auxiliary rotors is equal to or less than the number of magnets in the primary rotor. ### Claim 9 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the array of magnets of each auxiliary rotor forms an equiangular and equilateral polygon having an even number of sides. ### Claim 10 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the array of magnets of each auxiliary rotor generally forms a circle. ### Claim 11 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated by one revolution, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor by one revolution. ### Claim 12 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated by one revolution, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor by more than one revolution. ### Claim 13 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor at a non-constant angular speed. ### Claim 14 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor at a constant angular speed. ### Claim 15 (depends on 1) A magnetic rotor arrangement according to claim 1, wherein the magnetic rotor arrangement is implemented in a generator, with the primary rotor arranged to rotate around a fixed primary stator and with each auxiliary rotor arranged to rotate around a fixed auxiliary stator. ### Claim 16 A generator for generating electric current comprising: a primary generating assembly comprising a fixed primary stator surrounded by a primary rotor comprising an array of magnets, wherein the magnets of the primary rotor are arranged to provide alternating polarity around the outside of the primary rotor; and a plurality of auxiliary generating assemblies positioned around the primary rotor, with each auxiliary generating assembly comprising a fixed auxiliary stator surrounded by an auxiliary rotor comprising an array of magnets, wherein the magnets of each auxiliary rotor are arranged to provide alternating polarity around the outside of the auxiliary rotor; wherein each auxiliary rotor is positioned on the outside of the primary rotor such that the array of magnets of each auxiliary rotor is positioned to be magnetically influenced by the array of magnets of the primary rotor; and wherein the primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor. ### Claim 17 (depends on 16) A generator according to claim 16, wherein the array of magnets of the primary rotor generally forms an equiangular and equilateral polygon having an even number of sides. ### Claim 18 (depends on 16) A generator according to claim 16, wherein the array of magnets of the primary rotor generally forms a circle. ### Claim 19 (depends on 16) A generator according to claim 16, wherein the primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor at a non-constant angular speed. ### Claim 20 (depends on 16) A generator according to claim 16, wherein the primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor at a constant angular speed.