公开(公告)号：US09876455B2

公开(公告)日：2018-01-23

申请号：US15154268

申请日：2016-05-13

Applicant: DENSO CORPORATION

Inventor： Masahiro Seguchi

IPC: H02P1/46 ,  H02P1/50 ,  H02P25/03 ,  H02K19/12 ,  H02K19/28

CPC classification number: H02P25/03 ,  H02K19/12 ,  H02K19/28 ,  H02K2201/03 ,  H02P2207/05

Abstract: A field winding type synchronous machine has a stator having a stator core to which a stator coil is wound, and a rotor that rotates while facing a peripheral surface of the stator with an electromagnetic gap therebetween. The rotor includes a rotor core having a plurality of main pole portions and interpole portions, main pole windings wound around the main pole portions, interpole windings wound around the interpole portions, and a full-wave rectifier circuit for energizing the field current to the main pole windings. The interpole windings produce the induced current by a magnetic flux generated by a time harmonic current superimposed on a fundamental wave of the stator coil. The electromagnetic gaps between the interpole portions and a circumferential surface of the stator are configured larger than electromagnetic between the main pole portions and the circumferential surface of the stator.

公开(公告)号：US09831746B2

公开(公告)日：2017-11-28

申请号：US14526064

申请日：2014-10-28

Applicant: Ingersoll-Rand Company

Inventor： Petri Juhani Maki-Ontto ,  Juha Tuomas Saari

IPC: H02K9/02 ,  H02K3/24 ,  H02K1/14 ,  H02K1/20

CPC classification number: H02K9/02 ,  H02K1/148 ,  H02K1/20 ,  H02K2201/03

Abstract: A symmetrical cooling system for an electric rotor machine that includes a passageway that is positioned between portions of the stator, and which provides a pathway for a cooling medium. Stator ducts positioned within the stator, or portions thereof, are in fluid communication with the passageway. Cooling medium may flow through the stator ducts from the passageway to ends of the stator so that the cooling medium only travels along a portion of the overall axial length of the stator. The symmetrical cooling system also includes an air gap that is positioned between the stator and the rotor, and which receives cooling medium from the passageway at a midsection of the air gap. Cooling medium received at the midsection of the air gap may then flow towards either first or second ends of the stator.

公开(公告)号：US09825507B2

公开(公告)日：2017-11-21

申请号：US14437191

申请日：2013-11-06

Applicant: ALSTOM RENEWABLE TECHNOLOGIES

Inventor： César Muñiz Casais

IPC: H02K7/18 ,  F03D9/00 ,  H02K3/46 ,  H02K15/02 ,  H02K1/27 ,  H02K1/30 ,  H02K1/06 ,  H02K1/18 ,  F03D9/25 ,  H02K15/00 ,  H02K15/03 ,  H02K15/16

CPC classification number: H02K7/18 ,  F03D9/25 ,  H02K1/06 ,  H02K1/185 ,  H02K1/27 ,  H02K1/30 ,  H02K3/46 ,  H02K7/183 ,  H02K15/00 ,  H02K15/0006 ,  H02K15/02 ,  H02K15/03 ,  H02K15/16 ,  H02K2201/03 ,  H02K2213/12 ,  Y02E10/725 ,  Y10T29/49012

Abstract: It comprises a rotor and a stator that they both may be formed of a single piece or they may be formed of a number of sectors. The generator further comprises at least one active module unit as an independent unit from both the rotor and the stator. The active module unit includes at least one permanent magnet, a magnet support structure attached thereto, a first attaching mechanism to removably attach the magnet support structure to the rotor or the stator, at least one coil module comprising at least one coil winding and a magnetic core, and a second attaching mechanism to removably attach the coil module to the other of the rotor or the stator. The coil module is spaced apart from the permanent magnet a predetermined distance.

公开(公告)号：US20170320682A1

公开(公告)日：2017-11-09

申请号：US15525248

申请日：2015-10-26

Applicant: Robert Bosch GmbH

Inventor： Anton Paweletz ,  Joachim Frangen ,  Heike Raatz

IPC: B65G54/02 ,  B65G45/10

CPC classification number: B65G54/02 ,  B65G45/10 ,  H02K41/02 ,  H02K2201/03

Abstract: An electromagnet-operated conveying device includes a movable conveying element, at least one permanent magnet, and a cleaning device. The at least one permanent magnet is arranged on the conveying element for the onward movement of the conveying element. The cleaning device is configured to remove particles from a surface of the at least one permanent magnet.

公开(公告)号：US09806590B2

公开(公告)日：2017-10-31

申请号：US14840042

申请日：2015-08-30

Applicant: Zhongshan Broad-Ocean Motor Co., Ltd.

Inventor： Changhong Liu

IPC: H02K29/03 ,  H02K1/27 ,  H02K1/08 ,  H02K1/16 ,  H02K1/26

CPC classification number: H02K29/03 ,  H02K1/08 ,  H02K1/16 ,  H02K1/26 ,  H02K1/274 ,  H02K1/2746 ,  H02K1/2773 ,  H02K1/278 ,  H02K2201/03

Abstract: A permanent magnet motor, including: a stator assembly and a rotor assembly. The stator assembly includes: a stator core and a coil winding. The stator core includes: a yoke portion, a plurality of tooth portions, and a plurality of winding slots. The rotor assembly includes: a rotor core, a plurality of permanent magnets, and a rotor sheath. The tooth portions are extended out of the yoke portion. Each winding slot is formed between adjacent tooth portions. The permanent magnets are disposed at intervals on a surface of the rotor core and magnetic poles of two facing sides of adjacent permanent magnets are the same. The rotor sheath is disposed outside the rotor assembly and is divided into at least two segments axially. A magnetic conductivity of a first segment of the rotor sheath is different from a magnetic conductivity of a second segment of the rotor sheath.

公开(公告)号：US20170279318A1

公开(公告)日：2017-09-28

申请号：US15468744

申请日：2017-03-24

Applicant: Valeo Equipements Electriques Moteur

Inventor： Jérome LEGRANGER ,  Khadija EL BARAKA ,  Svetislav JUGOVIC

IPC: H02K1/14 ,  H02K3/18 ,  H02K1/27 ,  H02K1/24

CPC classification number: H02K1/146 ,  H02K1/24 ,  H02K1/2706 ,  H02K1/2773 ,  H02K3/18 ,  H02K2201/03 ,  H02K2213/03

Abstract: The invention relates mainly to a rotary electrical machine, in particular for a motor vehicle, comprising a stator with a stator tooth pitch equal to 360° divided by the number of stator teeth; each rotor tooth (40) comprising an outer face (42) opposite an inner periphery of the stator; on a plane (PI_R) which is radial relative to the axis of rotation (X), a rotor tooth opening (A2) is equal to an angle between two straight lines (D1, D2) each passing via the axis of rotation (X) and an ortho-radial end of the outer face (42); and a ratio of the rotor tooth opening (A2) expressed in degrees divided by the stator tooth pitch expressed in degrees is between 0.8 and 1.2.

公开(公告)号：US20170187272A1

公开(公告)日：2017-06-29

申请号：US15391076

申请日：2016-12-27

Applicant: Johnson Electric S.A.

Inventor： Yue LI ,  Chui You ZHOU ,  Yong WANG ,  Yong LI

IPC: H02K21/14 ,  H02K1/14 ,  H02K3/18 ,  H02K1/27

CPC classification number: H02K21/14 ,  H02K1/143 ,  H02K1/145 ,  H02K1/148 ,  H02K1/2706 ,  H02K3/18 ,  H02K21/16 ,  H02K21/185 ,  H02K29/03 ,  H02K2201/03

Abstract: A single phase permanent magnet motor includes a stator and a rotor. The stator includes a stator core with windings. The stator core includes a yoke and claw-poles. Each claw-pole forms an arc pole face which is an involute curved face. All arc pole faces cooperatively define a space for receiving the rotor. A gradually changing uneven air gap is defined between the arc pole faces and the rotor. When the motor powers off and stops, the pole axis of the rotor is offset from the central axis of the claw-poles by a certain angle to avoid the rotor to stop at a dead point position, thus facilitating next startup of the motor.

公开(公告)号：US20170093260A1

公开(公告)日：2017-03-30

申请号：US15281954

申请日：2016-09-30

Applicant: Johnson Electric S.A.

Inventor： Yue LI ,  Chui You ZHOU ,  Yong WANG ,  Yong LI

IPC: H02K21/16 ,  H02K3/28 ,  H02K3/18 ,  H02K1/27 ,  H02K1/14

CPC classification number: H02K21/16 ,  H02K1/146 ,  H02K1/2706 ,  H02K1/278 ,  H02K3/18 ,  H02K3/28 ,  H02K3/325 ,  H02K5/15 ,  H02K29/03 ,  H02K2201/03 ,  H02K2201/06

Abstract: A brushless motor includes a stator and a rotor. The stator includes a stator core and two windings. The stator core includes a yoke, two opposing first teeth, and two second teeth. The windings are respectively wound around the two first teeth. The second teeth are not wound with any winding. The first and second teeth are alternatively arranged. The rotor is received in a space cooperatively bounded by the pole shoes of the main and second teeth. Air gaps are formed between an outer circumferential surface of the rotor and respective pole faces of the first teeth and the second teeth. Each of the air gaps is asymmetrical with regarded to a central line of the corresponding one of the first teeth and the second teeth.

公开(公告)号：US20170093231A1

公开(公告)日：2017-03-30

申请号：US15126114

申请日：2015-03-06

Applicant: XYLEM IP HOLDINGS LLC

Inventor： Karsten Laing

IPC: H02K1/08 ,  H02K1/02

CPC classification number: H02K1/08 ,  H02K1/02 ,  H02K1/27 ,  H02K1/278 ,  H02K1/2793 ,  H02K21/12 ,  H02K21/16 ,  H02K2201/03 ,  H02K2201/12

Abstract: A stator-rotor device for an electrical machine, in particular an electric motor, includes a stator and a rotor, wherein the stator-rotor device pole cores provided with windings comprise pole shoes and magnets associated therewith. The pole shoes are connected via a first surface to a respective pole core and have a second surface that is facing towards the magnets. The pole shoes cooperate magnetically with the magnets and are separated from the latter by an air gap. The pole shoes and the magnets engage with one another in an engagement direction in such a way that in each case a section of the other component—magnet or pole shoes—is arranged lying opposite the respectively engaging component—pole shoe or magnet—transverse to the engagement direction on two sides facing away from one another. The second surface is larger than the first surface.

公开(公告)号：US20170085143A1

公开(公告)日：2017-03-23

申请号：US15126503

申请日：2015-02-24

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Toshinori TANAKA ,  Eigo TOTOKI ,  Ryuichi TAKIGUCHI

IPC: H02K1/27 ,  H02K1/14

CPC classification number: H02K1/2706 ,  H02K1/146 ,  H02K1/276 ,  H02K1/278 ,  H02K29/03 ,  H02K2201/03 ,  H02K2201/06 ,  H02K2213/03

Abstract: R1>R2>R3 is satisfied, where R1 is a radius of curvature of a cylindrical surface that contacts circular arc-shaped curved surfaces arranged circumferentially, R2 is a radius of curvature of the circular arc-shaped curved surfaces, and R3 is a radius of curvature of an upper surface of permanent magnets, air gaps are formed on radially outer portions of two circumferential side portions of magnet housing apertures, surfaces that contact two circumferential side surfaces of the permanent magnets so as to be parallel to a radial direction are disposed on radially inner portions of the two circumferential end portions, and B2>B1 is satisfied, where B1 is a thickness of a core portion of the rotor core between the circular arc-shaped curved surfaces and the magnet housing apertures at a magnetic pole center, and B2 is a thickness of a circumferential end portion of the core portion.