# US 2013/0154582 A1 · Multiphase converter comprising magnetically coupled phases > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0154582 A1 - Document ID: US20130154582A1 - Status: Published application - Kind: A1 - Application number: 13/819,789 - Filed: 2011-08-25 - Published: 2013-06-20 - Earliest claimed: 2010-09-03 - Assignees: Robert Bosch GmbH - Inventors: Nils Draese; Mirko Schinzel - Web page: https://patentgrep.com/patent/US20130154582A1 ## CPC - H02M 3/04: by static converters - H01F 38/00: Adaptations of transformers or inductances for specific applications or functions - H02M 3/1584: {with a plurality of power processing stages connected in parallel} - H01F 2038/026: {non-linear inductive arrangements for converters, e.g. with additional windings} - H02M 3/1586: {switched with a phase shift, i.e. interleaved} - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract Disclosed is a multiphase converter comprising multiple electric phases (11 to 16), each of which can be triggered using switching means (21 to 26). Coupling means (31, 36, 37) are provided which magnetically couple at least one first phase (11) to at least two other phases (12, 14, 16). At least two coupling means (31, 36, 37) are provided for magnetically coupling one of the phases (11) to at least two other phases (12, 14, 16), at least one of the two coupling means (37) having less inductance than the other coupling means (31, 36). ## Claims ### Claim 1 A multiphase converter, comprising a plurality of electrical phases (11 to 16), each of which is driven by one of a plurality of switches (21 to 26), wherein a plurality of couplers (31, 36, 37) are provided, which magnetically couple at least one first phase (11) to at least two further phases (12, 14, 16), characterized in that at least two of the plurality of couplers (31, 36, 37) are provided in order to magnetically couple one of the phases (11) to at least two further phases (12, 14, 16), wherein at least one of the two of the plurality of couplers (37) has a lower inductance than the other one of the plurality of couplers (31, 36). ### Claim 2 (depends on 1) The device as claimed in claim 1, characterized in that the plurality of couplers (31 to 39) are provided, which magnetically couple each of the phases (11 to 16) to at least two further phases (11 to 16), wherein at least one of the plurality of couplers (31, 34, 38) in each phase (11 to 16) has a lower inductance than that of the further of the plurality of couplers (32, 33, 35, 36, 37, 39) for said phase (11 to 16). ### Claim 3 (depends on 1) The device as claimed in claim 1, characterized in that the inductance is chosen such that saturation protection is achieved. ### Claim 4 (depends on 1) The device as claimed in claim 1, characterized in that the inductances of the of the plurality of couplers (31 to 39) are chosen such that at least similar power losses arise in the plurality of couplers (31 to 39). ### Claim 5 (depends on 1) The device as claimed in claim 1, characterized in that the one of the plurality of couplers (37) which couples one phase (11) to one phase (14) driven in a manner phase-shifted by approximately 180° has a lower inductance than at least one of the other of the plurality of couplers (31, 36). ### Claim 6 (depends on 1) The device as claimed in claim 1, characterized in that the plurality of switches (21 to 26) drive the phases (11 to 16) sequentially, and in that one phase (11) is magnetically coupled to at least one further phase (12, 16) driven directly previously and subsequently. ### Claim 7 (depends on 1) The device as claimed in claim 1, characterized in that at least three of the plurality of couplers (31, 36, 37) are provided in order to magnetically couple one of the phases (11) to at least three further phases (12, 14, 16). ### Claim 8 (depends on 1) The device as claimed in claim 1, characterized in that exactly six phases (11 to 16) are provided, wherein the plurality of couplers (31 to 39) magnetically couple each of the six phases (11 to 16) to three further phases of the six phases (11 to 16). ### Claim 9 (depends on 1) The device as claimed in claim 1, characterized in that the one of the plurality of couplers (37) is provided with an air gap (62) for influencing the inductance. ### Claim 10 (depends on 1) The device as claimed in claim 1, characterized in that the plurality of couplers (31) comprises at least two parts (43, 44), wherein a gap (64) is provided between two parts (43, 44) for influencing the inductance. ### Claim 11 (depends on 1) The device as claimed in claim 1, characterized in that the plurality of switches (21 to 26) drive the phases (11 to 16) sequentially, and in that one phase (11) is magnetically coupled to at least one further phase (12, 16) driven directly previously. ### Claim 12 (depends on 1) The device as claimed in claim 1, characterized in that the plurality of switches (21 to 26) drive the phases (11 to 16) sequentially, and in that one phase (11) is magnetically coupled to at least one further phase (12, 16) driven directly subsequently. ### Claim 13 (depends on 10) The device as claimed in claim 10, wherein the gap (64) is an air gap.