# US 2020/0287435 A1 · Electric machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0287435 A1 - Document ID: US20200287435A1 - Status: Published application - Kind: A1 - Application number: 16/648,298 - Filed: 2018-08-07 - Published: 2020-09-10 - Earliest claimed: 2017-09-20 - Assignees: Vitesco Technologies GmbH - Applicants: Vitesco Technologies GmbH - Inventors: PETER STAUDER; BERNHARDT LUEDDECKE; LARS VORNWEG; NAM ANH DINH; DOMINIK JUST - Web page: https://patentgrep.com/patent/US20200287435A1 ## CPC - H02K 3/28: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) - H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) - H02K 1/12: Stationary parts of the magnetic circuit - H02K 1/16: Stator cores with slots for windings - H02K 1/18: Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures - H02K 3/04: Windings characterised by the conductor shape, form or construction, e.g. with bar conductors - H02K 3/12: arranged in slots - H02K 3/46: Fastening of windings on the stator or rotor structure - H02K 3/522: {for generally annular cores with salient poles} - H02K 21/12: with stationary armatures and rotating magnets - H02K 1/14: Stator cores with salient poles - H02K 3/18: Windings for salient poles - H02K 21/14: with magnets rotating within the armatures - H02K 21/16: having annular armature cores with salient poles (with homopolar co-operation H02K21/20) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract An electric machine includes an annular stator and a rotor disposed within the stator. The stator has a multiplicity of stator segments in a circumferential direction. Each of the stator segments has one or more inner grooves, disposed in the region of the inner circumference of the stator segment, and a winding window which is disposed in the region of the outer circumference of the stator segment. A stator winding is wound in toroidal fashion around the stator segment. The winding window is partially surrounded at its radial outer side by stator segment outer arms in such a way that a radially directed outer gap extending from the winding window to the outer circumference of the stator segment is formed between the stator segment outer arms. ## Claims ### Claim at position 1 1-13. (canceled) ### Claim 14 An electric machine, comprising: an annular stator and a rotor disposed within said stator; said stator having a multiplicity of stator segments disposed in a circumferential direction; each of said stator segments having an inner circumference, an outer circumference, at least one inner groove disposed in a region of said inner circumference and a winding window disposed in a region of said outer circumference, said winding window having a radial outer side; each of said stator segments having stator segment outer arms partially surrounding said winding window at said radial outer side and forming a radially directed outer gap disposed between said stator segment outer arms and extending from said winding window to said outer circumference of said stator segment; and each of said stator segments having a stator winding wound toroidally around said stator segment. ### Claim 15 (depends on 14) The electric machine according to claim 14, wherein said outer gap has a length and a width selected to form an additional magnetic circuit of predefined inductance in a region outside said stator. ### Claim 16 (depends on 15) The electric machine according to claim 15, wherein said stator segment outer arms have identical lengths in a circumferential direction of said stator segment. ### Claim 17 (depends on 15) The electric machine according to claim 15, wherein said outer gap extends radially outward from a central region in a circumferential direction of said winding window to said outer circumference of said stator segment. ### Claim 18 (depends on 14) The electric machine according to claim 14, wherein said outer gap is widened in said circumferential direction in a transition region to said outer circumference of said stator segment. ### Claim 19 (depends on 14) The electric machine according to claim 14, wherein: said stator segment outer arms are configured to be folded over between: a first end position in which said stator segment outer arms are folded open and open up said winding window, and a second end position in which said stator segment outer arms are folded closed; and said outer gap extending from said winding window to said outer circumference of said stator segment is kept free in said folded-closed end position. ### Claim 20 (depends on 14) The electric machine according to claim 14, which further comprises a bridge mounted onto said stator segment outer arms for keeping said outer gap, extending from said winding window to said outer circumference of said stator segment, free. ### Claim 21 (depends on 20) The electric machine according to claim 20, wherein said bridge is formed of iron powder or MPP core material. ### Claim 22 (depends on 14) The electric machine according to claim 14, which further comprises stator segment inner arms partially surrounding radial inner sides of each of said inner grooves to form a radially directed inner gap disposed between said stator segment inner arms and extending from said inner groove to said inner circumference of said stator segment. ### Claim 23 (depends on 22) The electric machine according to claim 22, wherein said stator segment inner arms have identical lengths in said circumferential direction of said stator segment. ### Claim 24 (depends on 22) The electric machine according to claim 22, wherein said inner gap is widened in said circumferential direction in a transition region to said inner groove of said stator segment. ### Claim 25 (depends on 14) The electric machine according to claim 14, which further comprises an iron powder or MPP core disposed in a region between said inner groove of a stator segment and said winding window of said stator segment. ### Claim 26 (depends on 14) The electric machine according to claim 14, which further comprises an additional winding disposed in a region of said inner circumference of said stator segments, said additional winding serving as a sensor winding.