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公开(公告)号：US20220360127A1
公开(公告)日：2022-11-10
申请号：US17620984
申请日：2019-07-16
发明人： Haruyuki KOMETANI , Ryoji MIYATAKE , Naoyoshi MORI , Yuta SAITO
摘要： A short-circuit generator is a generator in which stator slots provided with windings of a stator placed therein each have a depth in a radial direction perpendicular to a rotor central axis whose ratio divided by a width of the stator slot in a direction perpendicular both to the radial direction and a direction of the rotor central axis, is less than three. A rotor includes: a field winding placed in each of rotor slots; a metallic damper bar placed in each of the rotor slots on an outer periphery side of the field winding; and a metallic wedge placed in each of the rotor slots on an outer periphery side of the damper bar and connected to the damper bar. A damper-bar height that is a height of the damper bar is less than a wedge height that is a height of the wedge in the radial direction.
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公开(公告)号：US11489394B2
公开(公告)日：2022-11-01
申请号：US16766574
申请日：2019-04-15
发明人： Jinhui Li , Wenshou Fan , Dinghui Wang
摘要： The present application relates to a slot wedge element, a stator device, a motor, and a wind turbine. The slot wedge element extends in a first direction and has opposite first and second edges has a first surface and a second surface in the thickness direction thereof, and is attached to a winding of the stator device via the first surface. The second surface includes a first portion, a second portion, and a third portion sequentially distributed in the first direction. A second thickness between the second portion and the first surface is greater than a first thickness between the first portion and the first surface, and the second thickness is greater than or equal to a third thickness between the third portion and the first surface. The first thickness is decreasingly distributed in a direction from the second portion to the first edge.
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公开(公告)号：US20220216773A1
公开(公告)日：2022-07-07
申请号：US17142189
申请日：2021-01-05
发明人： Kris H. Campbell , Shin Katsumata , Brian C. Konopa , Erika M. Danckers , Andreas C. Koenig , Ashutosh Joshi
摘要： A wedge for use in an electric machine includes a central portion comprising at least a first material, a first wing integrally attached to the central portion, and a second wing integrally attached to the central portion opposite the first wing, wherein the first wing, and the second wing include a second material.
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94.发明授权公开(公告)号：US11368067B2
公开(公告)日：2022-06-21
申请号：US17094127
申请日：2020-11-10
摘要： Provided is a covering element for covering a slot between two adjacent teeth of an electromagnetic machine, a stator for an electromagnetic machine and a method of forming a covering element. The covering element comprises a first sub-element and a second sub-element. The first sub-element and the second sub-element are arranged adjacent to each other in a first direction. Further, the second sub-element is made of a different material than the first sub-element.
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公开(公告)号：US11336142B2
公开(公告)日：2022-05-17
申请号：US16966120
申请日：2019-02-22
摘要： An electrical machine includes a rotor with a plurality of winding slots in which wire windings are arranged. A pair of covering slides is associated with each winding slot, wherein each covering slide has a closure wall, and the closure walls of the pairs of covering slides close the winding slots which are associated with them on that side of the winding slots which faces radially outward. Mutually facing longitudinal ends of the closure walls of the same pair of covering slides overlap in the assembled state in such a way that the closure walls of the same pair of covering slides overlap only in sections.
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公开(公告)号：US20220134530A1
公开(公告)日：2022-05-05
申请号：US17495494
申请日：2021-10-06
申请人： Black & Decker Inc.
发明人： Joseph P. Kelleher , William F. Gallagher , Sean R. Templeton , Mark R. Poetzl , Seth M. Robinson , Marcell E. coates , Madhur M. Purohit , Timothy J. Seeley , Joshua M. Lewis
IPC分类号： B25F5/00 , H02K5/10 , H02K3/52 , H02K3/18 , H02K11/33 , H02K7/14 , H02K9/22 , H02K5/20 , H02K9/04 , H02K11/215 , B25F5/02 , H02K1/2706 , H02K3/34 , H02K9/06 , H02K1/14 , B24B23/02 , H02K3/487 , H02K7/08 , H02K7/116 , H02K21/16 , H02K3/38
摘要： A power tool is provided including a gear case having a spindle, a motor case connected to a rear end of the gear case along a longitudinal axis; a handle portion extending from a rear end of the motor case along the longitudinal axis; a motor housed inside the motor case; a fan in rotational connection with the motor; at least one air intake arranged at least one of the motor case or the handle portion near the rear end of the motor case; and a power module including power switches for driving the motor and a heat sink. The power module is housed in at least one of the motor case or the handle portion near the rear end of the motor case such that rotation of the fan causes air flow to enter through the air intake and flow near the heat sink and through the motor.
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公开(公告)号：US11283322B2
公开(公告)日：2022-03-22
申请号：US17056908
申请日：2019-05-13
摘要： A cage for a wound rotor includes a first portion and a second portion to be rigidly connected to one another. Each portion includes an end ring and a circumferential plurality of rods extending away from the end ring parallel to the axis of revolution of the end ring. Each rod has a main portion and an end portion. For each rod of the first portion, the end portion of the rod is shaped to be rigidly connected to the end portion of at least one complementary rod of the second portion when the two portions are each installed at a longitudinal end of the body of the rotor so that the two complementary rods rigidly connected form a slot wedge extending between the two end rings of the two portions of the cage.
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公开(公告)号：US11258338B2
公开(公告)日：2022-02-22
申请号：US16178805
申请日：2018-11-02
申请人： AUDI AG
发明人： Korbinian Weber
IPC分类号： H02K3/34 , H02K3/24 , H02K3/04 , H02K1/16 , H02K15/02 , H02K5/08 , H02K3/12 , H02K1/14 , H02K3/487
摘要： An electric motor including a stator body with a stator laminated core and a stator slot, wherein the stator slot has a slot wall with a slot wall insulation for electrical insulation, as well as at least one electrical conductor which is received by the stator slot, the slot wall insulation having a tooth-shaped configuration.
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公开(公告)号：US20210351654A1
公开(公告)日：2021-11-11
申请号：US17273739
申请日：2018-10-11
发明人： Takahiro MABUCHI , Xiaohong YIN , Tsubasa MORI , Makoto TSUKIJI
摘要： Provided is a stator coil, including: a coil conductor; a first insulating layer in which a first mica tape is wound and laminated around an outer periphery of the coil conductor; and a second insulating layer in which a second mica tape is wound and laminated around an outer periphery of the first insulating layer, wherein the first mica tape contains mica in a specific content, wherein 60 mass % or more of the mica contained in the first mica tape passes through a JIS standard sieve having a nominal opening of 250 μm, wherein the first mica tape has a specific lamination thickness, and wherein 40 mass % or less of mica contained in the second mica tape passes through the JIS standard sieve having a nominal opening of 250 μm.
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公开(公告)号：US11133718B2
公开(公告)日：2021-09-28
申请号：US16032537
申请日：2018-07-11
发明人： Andrew Kasha , Jacob Krizan , Chun Tang
摘要： An electric machine includes a stator having teeth that define open slots and slot closers disposed in the slots. Each slot closers includes a flux bridge surrounded by a nonmagnetic case. The slot closer is disposed between adjacent ones of the teeth with the case engaging and spanning the adjacent teeth. The case forms nonmagnetic gaps between the flux bridge and the adjacent teeth, respectively, to reduce potential for torque ripple.
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