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公开(公告)号：US20180048207A1
公开(公告)日：2018-02-15
申请号：US15553598
申请日：2015-04-27
Applicant: Mitsubishi Electric Corporation
Inventor： Naoki OHASHI , Shoichiro NISHITANI , Keisuke MURASE , Akihiro YAMAMURA
CPC classification number: H02K5/20 , H02K9/16 , H02K9/19 , H02K15/14 , H02K2201/03
Abstract: This invention is concerning a rotary electric machine 1, this electric motor 1 being provided with an inner cylinder 2, a rotor 3 provided so as to be rotatable inside the inner cylinder 2, a stator 4 fixed to the inner cylinder 2 and separated via a gap from an outer periphery of the rotor 3, and an outer cylinder 8 that covers an entire periphery of the inner cylinder 2 and forms a space 15, which serves as a coolant passage, in conjunction with the inner cylinder 2, wherein both ends of the inner cylinder 2 and the outer cylinder 8 in an axial direction are fixed to each other by cylinder welding portions 9 formed by welding. Accordingly, a rotary electric machine that is small and light can be obtained at low cost.
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132.发明授权公开(公告)号：US09871420B2
公开(公告)日：2018-01-16
申请号：US14362363
申请日：2012-10-30
Applicant: VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
Inventor： Lilya Bouarroudj , Jean-Claude Matt , Jean-Claude Labrosse
CPC classification number: H02K1/2773 , H02K1/2706 , H02K21/12 , H02K2201/03 , H02K2213/03
Abstract: A rotor (1) comprising a plurality of alternating magnetic poles formed by permanent magnets (3) distributed regularly between a circumferential portion (5) and a central portion (6) of the magnetic body (2) of the rotor and defining circumferential pole sections (7). The pole sections have a pre-determined pole pitch (Thetarho) and comprise a lobe-forming radial section (8). The lobe-forming radial section partially covers the magnets, such as to maximize a useful magnetic flux (PhiU) flowing radially through each of the pole sections and to minimize a leakage magnetic flux flowing through the circumferential portion. The pole sections can have a pre-determined pole overlap angle (Thetar) such as to maximize the useful magnetic flux (PhiU) and to minimize the leakage magnetic flux (PhiL), said overlap angle (Thetar) being a viewing angle of the lobe (8) from a point on the axis of the rotor.
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公开(公告)号：US09825493B2
公开(公告)日：2017-11-21
申请号：US14303015
申请日：2014-06-12
Applicant: Hyundai Motor Company
Inventor： Sanghoon Moon , Kyoungbum Kim , Ki Nam Kim , Hyoungjun Cho , Yeonho Kim , Jung Shik Kim
CPC classification number: H02K1/2706 , H02K1/276 , H02K21/14 , H02K2201/03
Abstract: An interior permanent magnet synchronous motor includes a stator a rotor disposed with a space between the stator and the rotor, and a plurality of permanent magnets embedded in the rotor. In particular, a plurality of slits are formed in one side surface of the permanent magnet in a rotation direction of the rotor at equal intervals.
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公开(公告)号：US20170324287A1
公开(公告)日：2017-11-09
申请号：US15512585
申请日：2015-09-08
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventor： HAUKE EINFELD , RAINER HELMER
CPC classification number: H02K1/276 , H02K1/2766 , H02K1/2773 , H02K1/32 , H02K2201/03 , H02K2213/03
Abstract: Circulating currents are suppressed and thermal losses are reduced in a three-phase permanent-magnet-excited synchronous machine in a delta circuit. The machine has a stator in which, during operation, a voltage is induced by way of a magnetic field generated by magnetic poles of a rotor. A field strength of the magnetic field has, along a circumferential coordinate of the rotor, a profile formed from superimposition of a sinusoidal basic function and of sinusoidal harmonics of the basic function. Groove recesses and/or cavities are located in and/or under a circumferential face of the rotor that face the stator and follow an axial extent of the pole pitch of the rotor in their longitudinal extent and extend transversely with respect to the longitudinal extent along the circumferential coordinate in the region of the maximum values of at least the third harmonic and outside the maximum values of the basic function.
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公开(公告)号：US20170310171A1
公开(公告)日：2017-10-26
申请号：US15367261
申请日：2016-12-02
Applicant: General Electric Company
Inventor： Patel Bhageerath Reddy , Kevin Michael Grace
CPC classification number: H02K1/246 , B60L50/50 , H02K1/146 , H02K3/18 , H02K19/103 , H02K2201/03 , H02K2213/03
Abstract: According to some embodiments, a synchronous reluctance machine is disclosed. The machine includes a stator; a rotor disposed within the stator and configured to rotate relative to the stator; and a sleeve disposed circumferentially around the rotor.
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Patent Agency Ranking
公开(公告)号：US20170278612A1
公开(公告)日：2017-09-28
申请号：US15513962
申请日：2015-09-18
Applicant: SEH LIMITED
Inventor： Jérémy HEIN , Martin MARSCHNER VON HELMREICH
CPC classification number: H01F7/1646 , H01F7/081 , H01F7/122 , H01F7/14 , H01F7/1844 , H01F2007/086 , H01F2007/1692 , H01F2007/185 , H02K33/16 , H02K41/031 , H02K2201/03
Abstract: A magnetic device comprising at least one stator (1) and one actuator (2), wherein the stator (1) and the actuator (2) respectively comprise at least one magnet with pole ends and a line of action of the magnet, and the actuator (2) can be moved linearly along a movement axis (3) and/or rotatably about a movement axis in a movement direction (4), wherein a stator line of action (15) of the stator (1) or a stator extension line (16) of the stator line of action (15), which stator extension line (16) extends as a geometric ray away from the pole end of the stator (1) as geometric tangent to the stator line of action (5), and an actuator line of action (25) of the translator (2) or an actuator extension line (26) of the translator line of action (25), which translator extension line (26) extends as a geometric ray away from the pole end of the translator (2) as geometric tangent to the translator line of action (25), respectively have intersection points (10), and the stator line of action (15), possibly the stator extension line (16), the translator line of action (25), and possibly the translator extension line (26) form a closed geometric shape so that the magnetic flux between the stator (1) and the translator (2) is bundled, wherein lines of action (5) and extension lines (6) extend through the magnetic device in an intersecting plane (11) comprising the movement axis (3).
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公开(公告)号：US09768659B2
公开(公告)日：2017-09-19
申请号：US14735551
申请日：2015-06-10
Applicant: ETEL S.A.
Inventor： José Manuel Fernandes Goncalves , Jean-Yves Grillon
CPC classification number: H02K5/10 , H02K1/17 , H02K41/031 , H02K2201/03
Abstract: A secondary part of a synchronous motor has a protective device for magnets. The secondary part has a plurality of magnets evenly spaced on a magnet support. The protective device has a web for insertion into the gap between adjacent magnets. The web has a first and second flange at its two ends, so that the web and the flanges form a double-T structure, and the flanges rest against outer edges of the adjacent magnets.
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公开(公告)号：US09768654B2
公开(公告)日：2017-09-19
申请号：US12877124
申请日：2010-09-08
Applicant: Mingpan Pan
Inventor： Mingpan Pan
IPC: H02K1/27
CPC classification number: H02K1/278 , H02K2201/03
Abstract: A motor, including at least a stator, including at least a stator core and a coil winding, and a rotor, including at least a rotor core and multiple permanent magnets. Multiple wire receiving grooves are disposed on the stator core. The permanent magnets are disposed on the rotor core. The ratio between the number of teeth of the wire receiving grooves and that of the permanent magnets is 3:2. Every two or three of the permanent magnets form a group of permanent magnets. A gap is disposed between adjacent groups of permanent magnets. The groups of permanent magnets are circumferentially distributed. Magnetic polarities of the permanent magnet are alternatively distributed in a N phase and a S phase. Difference in an electric angle between centers of polarities of adjacent permanent magnets in one group is between 150 degrees and 170 degrees.
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公开(公告)号：US20170250583A1
公开(公告)日：2017-08-31
申请号：US15328940
申请日：2014-07-31
Applicant: GUANGDONG WELLING MOTOR MANUFACTURING CO., LTD. , MIDEA WELLING MOTOR TECHNOLOGY (SHANGHAI) CO., LTD.
Inventor： Guangming PENG , Fei WANG , Lidan ZHAO , Jintao CHEN , Z.Q. ZHU
CPC classification number: H02K1/276 , H02K1/146 , H02K2201/03 , H02K2213/03
Abstract: An electric motor rotor (100) and an electric motor having the same are provided. The electric motor rotor (100) includes a rotor body (1) provided with a rotor bore (11) and a plurality of magnetic steel slots (12) surrounding the rotor bore (11), in which an outer contour of the rotor body (1) includes a plurality of concentric arc segments (101) in concentric with the rotor bore (11) and a plurality of connecting line segments (102) connecting adjacent concentric arc segments (101), and the connecting line segment (102) includes at least one straight line segment (1021), in which an included angle β between a central normal line of each straight line segment (1021) and a connecting line between a midpoint of the straight line segment (1021) and a center of the rotor bore (11) satisfies 0°≦β≦20°; and a plurality of magnetic steel bars (2).
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公开(公告)号：US09748807B2
公开(公告)日：2017-08-29
申请号：US14842811
申请日：2015-09-01
Inventor： Mingpan Pan
CPC classification number: H02K1/2773 , H02K1/06 , H02K1/146 , H02K21/16 , H02K2201/03 , H02K2213/03
Abstract: A motor including a stator assembly and a rotor assembly. The stator assembly includes a stator core and a winding; the stator core includes a yoke and a plurality of teeth protruding inwards from the yoke; between two adjacent teeth formed is a winding slot; the winding is arranged in the winding slot, and winded on the teeth. The rotor assembly includes a rotor core and a permanent magnet. The rotor core includes an annular ring having a central axial bore and a plurality of magnetic induction blocks protruding outwards from an outer side of the annular ring. Between two adjacent magnetic induction blocks formed is a radial recess for mounting the permanent magnet. The magnetic induction blocks at both sides of an opening of the radial recess protrude with a hook block. The thickness of the rotor core is larger than that of the stator core.
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