# US 2018/0026487 A1 · Rotating electrical machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0026487 A1 - Document ID: US20180026487A1 - Status: Published application - Kind: A1 - Application number: 15/545,986 - Filed: 2016-03-24 - Published: 2018-01-25 - Earliest claimed: 2015-03-24 - Assignees: Aisin Aw Co., Ltd. - Applicants: Aisin Aw Co., Ltd. - Inventors: Kiyotaka KOGA - Web page: https://patentgrep.com/patent/US20180026487A1 ## CPC - H02K 3/12: arranged in slots - H02K 1/16: Stator cores with slots for windings - H02K 1/274: the rotor consisting of two or more circumferentially positioned 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 3/48: in slots - H02K 15/085: by laying conductors into slotted stators - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract In this rotating electrical machine, each of coil centers of a first concentric coil and a third concentric coil is located on one side in a circumferential direction with respect to a center of a magnetic pole, and each of coil centers of a second concentric coil and a fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the magnetic pole. ## Claims ### Claim at position 1 1-8. (canceled) ### Claim 9 A rotating electrical machine, comprising: a rotor core having a permanent magnet placed therein; a stator core placed so as to face the rotor core in a radial direction and having a plurality of slots; and a concentric coil formed by concentrically winding a wire and placed in the slots of the stator core, wherein the concentric coil includes a first concentric coil and a second concentric coil which are of the same phase and are connected in series with each other, and a third concentric coil and a fourth concentric coil which are of the same phase and are connected in series with each other, the first concentric coil and the second concentric coil are connected in parallel with the third concentric coil and the fourth concentric coil, and each of coil centers of the first concentric coil and the third concentric coil is located on one side in a circumferential direction with respect to a center of a magnetic pole, and each of coil centers of the second concentric coil and the fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the magnetic pole. ### Claim 10 (depends on 9) The rotating electrical machine according to claim 9, wherein each of the first concentric coil, the second concentric coil, the third concentric coil, and the fourth concentric coil has a plurality of coil portions formed by concentrically winding a wire, and a connection portion connecting the coil portions, a connection center in the connection portion of each of the first and third concentric coils is located on the one side in the circumferential direction with respect to the center of the magnetic pole, and a connection center in the connection portion of each of the second and fourth concentric coils is located on the other side in the circumferential direction with respect to the center of the magnetic pole. ### Claim 11 (depends on 10) The rotating electrical machine according to claim 10, wherein a plurality of sets of the coil portion and the connection portion are arranged in the circumferential direction. ### Claim 12 (depends on 11) The rotating electrical machine according to claim 11, wherein the coil center of the first concentric coil is located on one side in the circumferential direction with respect to a center of a first magnetic pole, and the coil center of the second concentric coil is located on the other side in the circumferential direction with respect to the center of the first magnetic pole, and the coil center of the third concentric coil is located on one side in the circumferential direction with respect to a center of a second magnetic pole adjacent to the first magnetic pole, and the coil center of the fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the second magnetic pole. ### Claim 13 (depends on 12) The rotating electrical machine according to claim 12, wherein a plurality of the permanent magnets are arranged at substantially regular angular intervals in the circumferential direction of the rotor core. ### Claim 14 (depends on 13) The rotating electrical machine according to claim 13, wherein the concentric coil includes three-phase concentric coils, each of the three-phase concentric coils includes the first concentric coil and the second concentric coil which are connected in series with each other, and the third concentric coil and the fourth concentric coil which are connected in series with each other, the first concentric coil and the second concentric coil are connected in parallel with the third concentric coil and the fourth concentric coil, and each of the coil centers of the first concentric coil and the third concentric coil is located on the one side in the circumferential direction with respect to the center of the magnetic pole, and each of the coil centers of the second concentric coil and the fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the magnetic pole. ### Claim 15 (depends on 14) The rotating electrical machine according to claim 14, wherein the concentric coil includes three-phase concentric coils, and the three-phase concentric coils are connected in a Y-configuration. ### Claim 16 (depends on 11) The rotating electrical machine according to claim 11, wherein the coil center of the first concentric coil is located on one side in the circumferential direction with respect to a center of a first magnetic pole, and the coil center of the second concentric coil is located on the other side in the circumferential direction with respect to a center of a second magnetic pole adjacent to the first magnetic pole, and the coil center of the third concentric coil is located on one side in the circumferential direction with respect to the center of the second magnetic pole, and the coil center of the fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the first magnetic pole. ### Claim 17 (depends on 9) The rotating electrical machine according to claim 9, wherein the coil center of the first concentric coil is located on one side in the circumferential direction with respect to a center of a first magnetic pole, and the coil center of the second concentric coil is located on the other side in the circumferential direction with respect to the center of the first magnetic pole, and the coil center of the third concentric coil is located on one side in the circumferential direction with respect to a center of a second magnetic pole adjacent to the first magnetic pole, and the coil center of the fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the second magnetic pole. ### Claim 18 (depends on 9) The rotating electrical machine according to claim 9, wherein the coil center of the first concentric coil is located on one side in the circumferential direction with respect to a center of a first magnetic pole, and the coil center of the second concentric coil is located on the other side in the circumferential direction with respect to a center of a second magnetic pole adjacent to the first magnetic pole, and the coil center of the third concentric coil is located on one side in the circumferential direction with respect to the center of the second magnetic pole, and the coil center of the fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the first magnetic pole. ### Claim 19 (depends on 9) The rotating electrical machine according to claim 9, wherein a plurality of the permanent magnets are arranged at substantially regular angular intervals in the circumferential direction of the rotor core. ### Claim 20 (depends on 9) The rotating electrical machine according to claim 9, wherein the concentric coil includes three-phase concentric coils, each of the three-phase concentric coils includes the first concentric coil and the second concentric coil which are connected in series with each other, and the third concentric coil and the fourth concentric coil which are connected in series with each other, the first concentric coil and the second concentric coil are connected in parallel with the third concentric coil and the fourth concentric coil, and each of the coil centers of the first concentric coil and the third concentric coil is located on the one side in the circumferential direction with respect to the center of the magnetic pole, and each of the coil centers of the second concentric coil and the fourth concentric coil is located on the other side in the circumferential direction with respect to the center of the magnetic pole. ### Claim 21 (depends on 9) The rotating electrical machine according to claim 9, wherein the concentric coil includes three-phase concentric coils, and the three-phase concentric coils are connected in a Y-configuration.