WO2002073778A1 - Segmented stator switched reluctance machine - Google Patents
Segmented stator switched reluctance machine Download PDFInfo
- Publication number
- WO2002073778A1 WO2002073778A1 PCT/US2002/007261 US0207261W WO02073778A1 WO 2002073778 A1 WO2002073778 A1 WO 2002073778A1 US 0207261 W US0207261 W US 0207261W WO 02073778 A1 WO02073778 A1 WO 02073778A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stator
- stator segment
- switched reluctance
- rotor
- segment core
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
- H02K19/10—Synchronous motors for multi-phase current
- H02K19/103—Motors having windings on the stator and a variable reluctance soft-iron rotor without windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
Definitions
- This invention relates to electric machines and, more particularly, to a switched reluctance electric machine including a segmented stator.
- Reluctance electric machines such as motors and generators, typically include a stator that is mounted inside a machine housing and a rotor that is supported for rotation relative to the stator.
- Reluctance electric machines produce torque as a result of the rotor tending to rotate to a position that minimizes the reluctance of the magnetic circuit and maximizes the inductance of an energized winding of the stator.
- a drive circuit generates a set of stator winding currents that are output to stator pole windings and that produce a magnetic field. In response to the magnetic field, the rotor rotates in an attempt to maximize the inductance of the energized winding of the stator.
- the windings are energized at a controlled frequency.
- Control circuitry and/or transducers are provided for detecting the angular position of the rotor.
- a drive circuit energizes the stator windings as a function of the sensed rotor position.
- Conventional switched reluctance electric machines generally include a stator with a solid stator core or a laminated stator with a plurality of circular stator plates that are punched from a magnetically conducting material and that are stacked together.
- the stator plates define salient stator poles that project radially inward and inter-polar slots that are located between the adjacent stator poles.
- the stator typically includes pairs of diametrically opposed stator poles.
- the rotor also typically includes pairs of diametrically opposed rotor poles. Windings or coils are wound around the stator poles. The windings that are wound around the pairs of diametrically opposed stator poles are connected to define a phase coil.
- phase coil By providing current in the phase coil, magnetic fields are established in the stator poles that attract a pair of the rotor poles.
- the current in the phase coils is generated in a predetermined sequence in order to produce torque on the rotor.
- the period during which current is provided to the phase coil, while the rotor poles are brought into alignment with the stator poles, is known as the active stage of the phase coil.
- the current in the phase coil is commutated to prevent a negative torque from acting on the rotor poles. Once the commutation point is reached, current is no longer output to the phase coil and the current is allowed to dissipate. The period during which current is allowed to dissipate is known as the inactive stage.
- a drive circuit estimates the rotor position from the inductance of the phase coil.
- Another sensorless approach outputs diagnostic pulses to the unenergized windings and senses the resulting electrical response.
- a drive circuit employs voltage sensing pulses that are output to an inactive phase coil.
- the RPT In switched reluctance electric machines using the "sensed" approach, the RPT detects the angular position of the rotor with respect to the stator. The RPT provides an angular position signal to the drive circuit that energizes the windings of the switched reluctance electric machine.
- the RPT typically includes a sensor board with one or more sensors and a shutter that is coupled to and rotates with the shaft of the rotor.
- the shutter includes a plurality of shutter teeth that pass through optical sensors as the rotor rotates.
- the RPTs also increase the overall size of the switched reluctance electric machine, which can adversely impact machine and product packaging requirements.
- the costs of the RPTs often place switched reluctance electric machines at a competitive disadvantage in applications that are suitable for open-loop induction electric machines that do not require RPTs.
- Another drawback with RPTs involves field servicing of the switched reluctance electric machines. Specifically, wear elements, such as the bearings, that are located within the enclosed rotor housing may need to be repaired or replaced. To reach the wear elements, an end shield must be removed from the housing. Because alignment of the sensor board is important, replacement of the end shield often requires the use of complex realignment techniques.
- the sensor board When the service technician improperly performs the alignment techniques, the sensor board is misaligned and the motor's performance is adversely impacted.
- variations in the electrical characteristics of the individual stator pole windings can adversely impact the ability of the sensorless drive circuits to correctly derive the angular rotor position.
- Most of the sensorless approaches measure the resistance and/or inductance of the windings. If the resistance and/or inductance varies from one stator winding to another, the drive circuit may incorrectly determine the angular rotor position.
- winding wire can be initially wound and transferred onto the stator poles. Transfer winding tends to leave excess winding wire or loops around axial ends of the stator poles. Transfer winding can typically utilize approximately 60-65% of available stator slot area. Needle winding employs a needle that winds the wire directly on the stator poles. The needle, however, takes up some of the stator slot area, which reduces slot fill to approximately 50%. The positioning of winding wire on the stator poles using these methods varies from one stator pole to the next.
- Winding creep and other assembly variations also impact the inductance and resistance of the winding wire over time, which makes it difficult to accurately perform "sensorless” control due to the non-conformity of the salient stator poles.
- Tangs or circumferential projections have been used on the radially inner ends of the salient stator poles to provide a stop surface to retain the winding wire in place. The tangs limit a slot opening dimension between adjacent salient poles.
- stator pole winding wire on the stator poles varies from one stator pole to the next and from one electric machine to the next.
- the individual winding turns are positioned differently and the cross sectional pattern of the stator pole windings is different.
- the inductance and resistance of the stator pole windings often vary from one stator pole to the next even though the same number of winding turns are used.
- a switched reluctance machine includes a rotor and a segmented stator having a plurality of stator segment assemblies.
- the stator segment assemblies define salient stator poles and inter-polar stator slots.
- Each of the stator segment assemblies includes a stator segment core, an end cap assembly attached to opposite axial end surfaces of the stator segment core, and winding wire that is wound around the stator segment core and the end cap assembly.
- the rotor defines a plurality of rotor poles. The rotor tends to rotate relative to the stator to maximize the inductance of an energized winding.
- each stator plate has an outer rim section and a tooth section.
- the end cap assembly includes a pair of end caps that are secured to opposite ends of the stator segment core, and a pair of retainer plates interconnecting the end caps on opposite sides of the stator segment core.
- the end cap assembly defines an annular retention channel within which the winding wire is wound. The retention channel facilitates improved precision in the winding process and tends to reduce winding creep during use.
- the present invention improves the torque density of the switched reluctance electric machine.
- the torque output of the switched reluctance electric machine can be increased and/or the dimensions of the switched reluctance electric machine can be reduced for a given torque output.
- the stator segment assemblies can be manufactured with a greater uniformity and with lower variations in inductance and resistance. Sensorless rotor position sensing techniques can be employed to dramatically lower the manufacturing costs of the switched reluctance machine and to improve reliability in the field.
- FIG. 1 illustrates a segmented stator and a rotor for a switched reluctance electric machine
- FIG. 2A illustrates a stator plate
- FIG. 2B identifies tooth width, projection width and stator pole arc on the stator plate of FIG. 2A;
- FIG. 3 is a perspective view of a stator segment assembly associated with the stator;
- FIG. 4 illustrates a switched reluctance drive circuit and a circuit board for connecting the drive circuit to terminals of the stator segment assemblies;
- FIG. 5A shows the stator segment assembly with its wire windings and insulation removed to better illustrate a stack of stator plates and the end cap assembly;
- FIG. 5B is a plan view of the end cap assembly shown in FIG. 5A; [0031] FIG. 5C is an end view of the end cap assembly shown in FIG.
- FIG. 6A is similar to FIG. 5A except that an alternate end cap assembly is shown;
- FIG. 6B shows a plan view of the alternate end cap assembly of FIG. 6A.
- FIG. 6C illustrates an end view of the alternate end cap assembly shown in FIG. 6B.
- a switched reluctance machine 10 is shown to include a housing 12, a segmented stator 14 mounted in the housing 12, and a rotor 16 supported for rotation relative to the segmented stator 14.
- the segmented stator 14 includes a plurality of stator segment assemblies 18 that can be individually assembled and then combined with additional stator segment assemblies to provide the segmented stator 14.
- each stator segment assembly 18 includes a stator segment core 20, an end cap assembly 22 supporting the stator segment core 20, and winding wire 24 that is wound around the stator segment core 20 and the end cap assembly 22.
- the stator segment core 20 includes a solid core or a stack of individual stator plates 26.
- Each stator plate 26 includes an arcuate outer rim section 28 and a tooth-shaped pole section 30.
- An outer edge surface 32 of the outer rim section 28 is shaped for mounting to an inner wall surface 34 of the housing 12.
- Each outer rim section 28 has a tongue projection 36 formed on one edge surface 38 and a groove 40 on its opposite edge surface 42. This tongue and groove arrangement helps align the stator segment assemblies during manufacturing.
- Each pole section 30 of the stator plates 26 has an arcuate inner edge surface 44 and a pair of circumferentially-extending projections 46.
- the stator segment core 20 is defined by a plurality of stator plates 26 that are stacked together.
- the stator plates 26 are die cut from thin sheets of magnetically conductive material.
- a first pair of slits 50 are cut into the outer rim section 28 and a second pair of slits 52 are cut into the pole section 30.
- the slits 50 are transverse in alignment relative to the slits 52.
- a die punch operation is completed to deform a central portion between the slits 50 and 52. This operation results in the stator plates 26 being releasably interconnected to define the stator segment core 20.
- the rotor 16 is shown to include a circular rim section 54 and a plurality of tooth-shaped pole sections 56 that project radially from the rim section 54.
- a circular bore 58 is formed in the rotor 16 and includes keyways 60.
- the circular bore 58 of the rotor 16 receives a rotor shaft (not shown).
- the rotor 16 has eight equally spaced rotor pole sections 56 and the segmented stator 14 has twelve equally spaced pole sections 30. Other rotor pole and stator pole combinations are also contemplated.
- each rotor pole section 56 has an arcuate outer edge surface 62 that defines an air gap 63 with respect to the arcuate inner edge surface 44 on the pole sections 30 of the stator plates 26.
- tooth width W1 , projection width W2, and stator pole arc Bs are shown.
- the slot opening dimension between radially inner ends of the stator teeth restricts the projection width W2 when needle and transfer winding methods are employed. This restriction is eliminated when the segmented stator assemblies are employed because the stator teeth can be wound individually before being assembled into the stator.
- the tooth width W1 determines the magnetic flux density in the stator tooth and how much area is available for winding wire in the inter-polar stator slot.
- the designer of the switched reluctance electric machine can select the tooth width W1 so that it is sufficient to accommodate the maximum anticipated magnetic flux in the stator poles, but is not wider than necessary.
- the slot area is increased, which allows additional winding wire.
- the design of the stator plates also depends on the type of steel that is selected, the axial length of the stator stack, and the desired magnetic flux density in the stator teeth.
- the stator segment assembly 18 is shown fully assembled to include the stator segment core 20, the end cap assembly 22 and the winding wire 24.
- the end cap assembly 22 is preferably made from magnetically permeable material and includes a first end cap 64A, a second end cap 64B and a pair of elongated winding retainer sections 66.
- the first end cap 64A is located at one end of the stator segment core 20 and the second end cap 64B is located at the opposite end of the stator segment core 20.
- the winding retainer sections 66 interconnect the first and second end caps 64A and 64B and are located adjacent to the projections 46 near the radially inner end of the pole sections 30 of the stator plates 26.
- the end caps 64A and 64B are similar in configuration.
- the retainer sections 66 are similar in configuration. Snap-in connections are contemplated for connecting the opposite ends of each retainer section 66 to the end caps 64A and 64B. Additionally, it is contemplated that adhesives are used for bonding the end caps 64A and 64B to the opposite ends of the stator segment core 20.
- the end caps 64A and 64B and the retainer sections 66 can also be molded as an integral end cap assembly 22.
- the first end cap 64A is similar to the second end cap 64B. The following description of the components will use reference numerals with an "A" suffix for the first end cap 64A and with an "B" suffix for the second end cap 64B.
- Terminals 70 and 72 are shown in FIGs. 3 and 5A to be mounted in slots 74 and 76 (FIG. 5C) formed in an end surface 78A of the first end cap 64A.
- One end of the winding wire 24 is connected to the first terminal 70 while an opposite end of the winding wire 24 is connected to the second terminal 72.
- Insulating material 77 covers winding wire 24 on both lateral sides of stator core 20. The insulating material 77 is also positioned (but not shown) between the stator segment core 20 and the winding wire 24.
- a switched reluctance drive circuit 80 is shown connected via connecting wires 82, 84 and 86 to a printed circuit board 88.
- the printed circuit board 88 is circular and has a plurality of radially outwardly projecting terminal pads 90.
- Each terminal pad 90 has conductive terminal slots 92 and 94 arranged to accept installation of the terminals 70 and 72 for each stator segment assembly 18.
- the drive circuit 80 operates to control energization of the winding wire 24 of the stator segment assemblies 18.
- FIG. 5A shows the stator segment assembly 18 prior to the winding wire 24 being wound thereon.
- the first end cap 64A includes an outer section 98A and an inner section 100A interconnected by a hub section 102A, all defining a common face surface 104A.
- the face surface 104A abuts and is bonded to an end surface 106 of the stator segment core 20.
- the face surface 104B of second end cap 64B abuts and is bonded to an end surface 108 of the stator segment core 20.
- the first end cap 64A When the first end cap 64A is secured to the stator segment core 20, its outer section 98A is connected slightly radially inward with respect to the outer rim section 28 and is parallel to the outer rim section 28.
- the hub section 102A is aligned with pole section 30 and the inner section 100A is aligned with and extends laterally beyond the inner edge surface 44 and the projections 46.
- a similar alignment is provided when the second end cap 64B is secured to the opposite end surface 108 of the stator segment core 20.
- the width of hub sections 102A and 102B is less than or equal to the width of the pole sections 30 of the stator segment core 20.
- FIG. 5B shows the inner section 100A of the first end cap 64A and the inner section 100B of the second end cap 64B to be rectangular in shape. It is contemplated, however, that other configurations (i.e. semi-circular, square, tapered, etc.) could be used.
- the retainer sections 66 could be provided as a cantilevered section that is integrally formed with the end caps 64A and/or 64B and adapted for connection to the inner section of the opposite end cap.
- lateral axial grooves 110 and a central axial groove 112 can be formed on the outer section of the end caps 64A and 64B.
- a cavity 114 can also be formed to provide additional weight reduction.
- FIGs. 6A, 6B and 6C an alternative cap assembly 122 is shown for connection to the stator segment core 20 and supporting the winding wire 24. Reference numerals from FIGs. 5A, 5B and 5C will be used where appropriate to identify similar elements.
- the first end cap 124A is generally similar to the first end cap 64A.
- the alternative end cap assembly 122 includes an additional pair of retainer sections.
- An outer retainer section 126A extends axially from the common face surface 104A adjacent to the outer section 98A for connection to the outer section 98B of the second end cap 124B.
- An outer retainer section 126B likewise extends axially from its common face surface 104B for connection to common face surface 104A of first end cap 124A.
- the outer retainer sections 126A and 126B provide additional support for the end cap assembly 22.
- the outer retainer sections 126A and 126B fill an undercut area of the stator segment core 20 and eliminate a sharp edge on the inner wall surface 130 that may scrape the winding wire during the winding operation.
- the outer retainer sections 126A and 126B have a tapered profile to mate with the profile of inner wall surfaces 130 (FIG. 2) of the outer rim section 28.
- the segmented stator for a switched reluctance electric machine improves the torque density of the electric machine in part by increasing slot fill, by allowing the stator segment assemblies to be precisely wound (which improves heat exchange between the windings and the slot), and by providing a greater active length for a given overall length across end turns (due to shorten end turns).
- stator segment assemblies of the switched reluctance electric machine can be produced with a greater electrical uniformity and with lower variations in inductance and resistance.
- sensorless rotor position sensing techniques can be employed, which dramatically lowers the manufacturing costs of the switched reluctance machine and improves reliability in the field.
- the manufacturing tolerances of the stator have been improved, less costly drive circuits can be employed and/or more accurate control can be achieved.
- the end cap assemblies according to the invention prevent winding creep and further help to improve the electrical uniformity of the stator segment assemblies during use.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MXPA03008256A MXPA03008256A (en) | 2001-03-12 | 2002-03-12 | Segmented stator switched reluctance machine. |
EP02709814A EP1374374A1 (en) | 2001-03-12 | 2002-03-12 | Segmented stator switched reluctance machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/803,876 US7012350B2 (en) | 2001-01-04 | 2001-03-12 | Segmented stator switched reluctance machine |
US09/803,876 | 2001-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002073778A1 true WO2002073778A1 (en) | 2002-09-19 |
Family
ID=25187667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/007261 WO2002073778A1 (en) | 2001-03-12 | 2002-03-12 | Segmented stator switched reluctance machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US7012350B2 (en) |
EP (1) | EP1374374A1 (en) |
CN (1) | CN1502161A (en) |
MX (1) | MXPA03008256A (en) |
WO (1) | WO2002073778A1 (en) |
Cited By (1)
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---|---|---|---|---|
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Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7111380B2 (en) * | 2002-10-31 | 2006-09-26 | Emerson Electric Co. | Method for forming an annular stator assembly |
DE102004048461A1 (en) * | 2004-10-05 | 2006-04-27 | Siemens Ag | Housing for an electrical machine |
DE102006017081A1 (en) * | 2005-09-21 | 2007-03-22 | Temic Automotive Electric Motors Gmbh | Stator for an electric motor and method of manufacture |
CN100385773C (en) * | 2006-03-30 | 2008-04-30 | 南京航空航天大学 | Column-projection-polar composite rotor structure |
US7982356B2 (en) | 2006-06-02 | 2011-07-19 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Electric motor and method for manufacturing an electric motor for a motor vehicle actuator drive |
US7400056B2 (en) * | 2006-09-29 | 2008-07-15 | Honeywell International Inc. | Engine starter-generator optimized for start function |
KR100908396B1 (en) * | 2007-04-23 | 2009-07-20 | 주식회사 아모텍 | XLD motor stator, XLD motor with double rotor / single stator structure and automotive cooling device using same |
US8901798B2 (en) * | 2007-05-31 | 2014-12-02 | Regal Beloit America, Inc. | Switched reluctance machines with minimum stator core |
WO2009015517A1 (en) * | 2007-08-02 | 2009-02-05 | Beijing Institute For Frontier Science | A permanent magnet synchronous array-type ac motor without bearings |
JP5151738B2 (en) * | 2008-07-01 | 2013-02-27 | 株式会社デンソー | Rotating electric machine stator and rotating electric machine |
EP2439831B1 (en) * | 2009-06-05 | 2019-09-11 | Toyota Jidosha Kabushiki Kaisha | Split stator and manufacturing method thereof |
KR101041165B1 (en) * | 2009-07-14 | 2011-06-13 | 엘지이노텍 주식회사 | stator core of motor |
US20110037339A1 (en) * | 2009-08-12 | 2011-02-17 | Gm Global Technology Operations, Inc. | Concentrated winding machines with reduced torque ripple and methods for designing the same |
US20110109184A1 (en) * | 2009-11-12 | 2011-05-12 | Langreck Gerald K | Tandem rotor servo motor |
WO2011101886A1 (en) * | 2010-02-16 | 2011-08-25 | 東芝三菱電機産業システム株式会社 | Synchronous generator |
CA2794210C (en) * | 2010-03-25 | 2017-08-22 | Gerald K. Langreck | High acceleration rotary actuator |
JP5641902B2 (en) * | 2010-10-08 | 2014-12-17 | 日本発條株式会社 | Motor stator core and manufacturing method |
FR2967310B1 (en) | 2010-11-04 | 2013-08-02 | Xap | ELECTROMAGNETIC MOTOR WITHOUT BRUSH |
CN103222156B (en) * | 2011-03-07 | 2015-11-25 | 浙江博望科技发展有限公司 | A kind of ferrite three-phase permanent magnet motor |
TWI443938B (en) * | 2011-08-26 | 2014-07-01 | Univ Nat Taiwan Science Tech | Stator unit, winding method therefor, stator structure using the same; and manufacture therefor |
CN102957226B (en) * | 2011-08-26 | 2015-02-25 | 黄仲钦 | Stator structure and manufacturing method thereof |
KR101321307B1 (en) * | 2011-10-31 | 2013-10-28 | 삼성전기주식회사 | Drive apparatus for switched reluctance motor and method thereof |
TWI439010B (en) | 2011-11-11 | 2014-05-21 | Ind Tech Res Inst | Segmented oriented-permeability structure for a rotating electrical machines |
FR2986673B1 (en) | 2012-02-02 | 2017-08-11 | Novatem | ELECTRIC MACHINE HAVING MODULAR STATOR STRUCTURE |
WO2013136485A1 (en) * | 2012-03-15 | 2013-09-19 | 三菱電機株式会社 | Armature of rotating electrical machine and method for manufacturing armature of rotating electrical machine |
US9343930B2 (en) | 2012-05-25 | 2016-05-17 | Baldor Electric Company | Segmented stator assembly |
TWI742414B (en) * | 2013-11-13 | 2021-10-11 | 美商布魯克斯自動機械公司 | Sealed switched reluctance motor |
JP2016537948A (en) | 2013-11-13 | 2016-12-01 | ブルックス オートメーション インコーポレイテッド | Sealed switched reluctance motor |
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TWI695447B (en) | 2013-11-13 | 2020-06-01 | 布魯克斯自動機械公司 | Transport apparatus |
JP6708546B2 (en) | 2013-11-13 | 2020-06-10 | ブルックス オートメーション インコーポレイテッド | Sealed robot drive |
CN103997178A (en) * | 2014-05-19 | 2014-08-20 | 刘忠涛 | Permanent magnet magnetic resistance energy-saving motor |
JP6293712B2 (en) | 2015-08-27 | 2018-03-14 | 株式会社三井ハイテック | Armature and method for manufacturing armature |
WO2017149593A1 (en) * | 2016-02-29 | 2017-09-08 | 株式会社安川電機 | Rotating electric machine and rotating electric machine manufacturing method |
WO2017158847A1 (en) | 2016-03-18 | 2017-09-21 | 株式会社安川電機 | Rotating electric machine and rotating electric machine manufacturing method |
JP6519572B2 (en) * | 2016-11-25 | 2019-05-29 | トヨタ自動車株式会社 | Control device for switched reluctance motor |
JP2018207632A (en) * | 2017-06-01 | 2018-12-27 | 株式会社東芝 | Dynamo-electric motor |
WO2019058565A1 (en) * | 2017-09-25 | 2019-03-28 | 三菱重工エンジン&ターボチャージャ株式会社 | Supercharger |
US11431210B2 (en) | 2018-08-02 | 2022-08-30 | Regal Beloit America, Inc. | Lamination, stator and electric motor having tip pairs for stator teeth |
EP3614529A1 (en) * | 2018-08-23 | 2020-02-26 | Siemens Aktiengesellschaft | Single tooth segment |
CN216981644U (en) | 2021-08-25 | 2022-07-15 | 米沃奇电动工具公司 | Electric motor and electric tool including the same |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1811585A1 (en) * | 1967-12-29 | 1969-07-17 | Leuenberger H | Process for manufacturing a laminated core and a laminated core manufactured according to this |
JPH10174319A (en) * | 1996-12-17 | 1998-06-26 | Shinko Electric Co Ltd | Stator of electric rotary machine |
JPH10210721A (en) * | 1997-01-20 | 1998-08-07 | Mitsubishi Electric Corp | Reluctance motor |
JPH1118331A (en) * | 1997-06-30 | 1999-01-22 | Matsushita Electric Ind Co Ltd | Stator of motor |
JPH11289701A (en) * | 1998-04-03 | 1999-10-19 | Nissan Motor Co Ltd | Stator of reluctance motor |
JPH11341717A (en) * | 1998-05-28 | 1999-12-10 | Matsushita Seiko Co Ltd | Stator of motor and its manufacture |
JP2000224790A (en) * | 1999-02-01 | 2000-08-11 | Hitachi Ltd | Rotating machine and motor-driven vehicle with the machine |
Family Cites Families (112)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1756672A (en) | 1922-10-12 | 1930-04-29 | Allis Louis Co | Dynamo-electric machine |
US2688103A (en) | 1952-07-16 | 1954-08-31 | Honeywell Regulator Co | Stator for rotative electrical apparatus |
US2894157A (en) | 1956-07-20 | 1959-07-07 | Wayne J Morrill | Winding forms for dynamoelectric machines |
DE1760382A1 (en) | 1968-05-11 | 1971-06-16 | Licentia Gmbh | Drum washing machine |
US3914859A (en) | 1974-01-17 | 1975-10-28 | Ray T Pierson | Method of fabricating closed slot stator construction particularly adapted for stepper motors |
US4130770A (en) | 1974-02-26 | 1978-12-19 | Papst-Motoren Kg | Axial flow fan having improved axial length structure |
US3987324A (en) * | 1974-05-20 | 1976-10-19 | General Electric Company | High efficiency induction motor with multi-cage rotor |
US3979821A (en) | 1975-05-09 | 1976-09-14 | Kollmorgen Corporation | Method of manufacturing rare earth permanent magnet rotor |
US4149309A (en) | 1977-07-27 | 1979-04-17 | Mitsui Mfg. Co., Ltd. | Laminated core manufacture |
US4350914A (en) | 1977-08-17 | 1982-09-21 | Vibrac Corporation | Electric motor manufacture |
US4635349A (en) | 1979-03-13 | 1987-01-13 | General Electric Company | Method of making single phase multi-speed motor |
US4340829A (en) | 1979-06-22 | 1982-07-20 | Sheller Globe Corporation | Molded end coil insulator |
DE2937838C2 (en) | 1979-09-19 | 1986-08-28 | Braun Ag, 6000 Frankfurt | Method and arrangement for regulating speed and phase position in synchronous motors |
CH654455A5 (en) | 1980-05-10 | 1986-02-14 | Papst Motoren Gmbh & Co Kg | BRUSHLESS DC MOTOR ARRANGEMENT, ESPECIALLY FOR MAGNETIC DISC DRIVES. |
US4584495A (en) * | 1984-12-17 | 1986-04-22 | Applied Motion Products, Inc. | Performance step motor |
US4819460A (en) | 1986-06-18 | 1989-04-11 | Emerson Electric Co. | Washing machine with direct drive system |
US4812695A (en) | 1986-08-15 | 1989-03-14 | Marathon Electric Manufacturing Corporation | Annular stator core construction |
US4845837A (en) | 1986-10-06 | 1989-07-11 | Emerson Electric Co. | Method of making permanent magnet assembly |
US4772839A (en) | 1987-10-27 | 1988-09-20 | General Electric Company | Rotor position estimator for switched reluctance motor |
US4883982A (en) | 1988-06-02 | 1989-11-28 | General Electric Company | Electronically commutated motor, blower integral therewith, and stationary and rotatable assemblies therefor |
US4922165A (en) * | 1988-06-06 | 1990-05-01 | General Electric Company | Core and slot liner |
US5563463A (en) | 1988-06-08 | 1996-10-08 | General Electric Company | Permanent magnet rotor |
DE3819651A1 (en) | 1988-06-09 | 1989-12-14 | Miele & Cie | WASHING MACHINE OR LAUNDRY DRYER WITH A DRIVE MOTOR DIRECTLY DRIVING THE LAUNDRY DRUM |
US4953284A (en) | 1988-12-15 | 1990-09-04 | Prestolite Electric Incorporated | Method for retaining a magnet within a motor assembly |
US4896089A (en) | 1989-01-31 | 1990-01-23 | General Electric Company | Fault management system for a switched reluctance motor |
US4959596A (en) | 1989-04-03 | 1990-09-25 | General Electric Company | Switched reluctance motor drive system and laundering apparatus employing same |
US4950932A (en) | 1989-05-30 | 1990-08-21 | General Electric Company | Axial flow fan integral with electronically commutated motor |
US4998052A (en) | 1989-07-28 | 1991-03-05 | General Electric Company | Gearless direct drive switched reluctance motor for laundry application |
SE464213B (en) | 1989-07-28 | 1991-03-18 | Electrolux Mecatronik Ab | PROCEDURE AND DEVICE FOR SENSOR-FREE CONTROL OF AN ELECTRIC ENGINE |
US5256926A (en) | 1989-08-01 | 1993-10-26 | Robert Bosch Gmbh | Alternating-current generator with stator center lamination and method for producing the center lamination |
US5252902A (en) | 1990-03-02 | 1993-10-12 | Kabushiki Kaisha Sg | Servo control system |
US5076076A (en) | 1990-04-02 | 1991-12-31 | General Electric Company | Direct drive oscillating basket washing machine and control for a washing machine |
JP2883409B2 (en) * | 1990-06-19 | 1999-04-19 | アスモ株式会社 | Small electric motor |
US5034642A (en) | 1990-08-30 | 1991-07-23 | Emerson Electric Co. | Permanent magnet rotor and motor |
US5161393A (en) | 1991-06-28 | 1992-11-10 | General Electric Company | Electronic washer control including automatic load size determination, fabric blend determination and adjustable washer means |
US5212419A (en) | 1992-01-10 | 1993-05-18 | Fisher Electric Motor Technology, Inc. | Lightweight high power electromotive device |
US5194775A (en) * | 1992-03-09 | 1993-03-16 | Morrill Electric, Inc. | Electric motor stator tabs |
US5257828A (en) | 1992-06-03 | 1993-11-02 | Trw Inc. | Method and apparatus for controlling damping in an electric assist steering system for vehicle yaw rate control |
GB9211685D0 (en) | 1992-06-03 | 1992-07-15 | Switched Reluctance Drives Ltd | Sensorless rotor position measurement |
US5672925A (en) * | 1992-08-06 | 1997-09-30 | Electric Power Research Institute, Inc. | Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings |
US5327053A (en) | 1992-08-12 | 1994-07-05 | Seagate Technology, Inc. | Apparatus and method for detecting rotor position in a sensorless and brushless DC motor |
US5301523A (en) | 1992-08-27 | 1994-04-12 | General Electric Company | Electronic washer control including automatic balance, spin and brake operations |
JP3430521B2 (en) | 1992-09-24 | 2003-07-28 | 松下電器産業株式会社 | Rotating electric machine stator |
US5291115A (en) | 1992-09-25 | 1994-03-01 | The Texas A&M University System | Method and apparatus for sensing the rotor position of a switched reluctance motor without a shaft position sensor |
DE69314612T2 (en) | 1992-12-17 | 1998-02-12 | Lg Electronics Inc | Sensorless, switched reluctance motor |
JP3355700B2 (en) * | 1993-06-14 | 2002-12-09 | 松下電器産業株式会社 | Rotating electric machine stator |
US5491859A (en) | 1993-11-30 | 1996-02-20 | Maytag Corporation | Drive system for automatic washing machine |
US5457375A (en) | 1994-05-27 | 1995-10-10 | Emerson Electric Co. | Sensorless commutation controller for a poly-phase dynamoelectric machine |
US5578880A (en) | 1994-07-18 | 1996-11-26 | General Electric Company | Fault tolerant active magnetic bearing electric system |
US5806169A (en) | 1995-04-03 | 1998-09-15 | Trago; Bradley A. | Method of fabricating an injected molded motor assembly |
JP2894967B2 (en) * | 1995-04-20 | 1999-05-24 | ファナック株式会社 | Insulation member of motor core |
US5691591A (en) | 1995-05-19 | 1997-11-25 | Itt Automotive Electrical Systems Inc. | Switched reluctance motor with indirect position sensing and magnetic brake |
DK0748027T3 (en) * | 1995-06-07 | 2007-01-08 | Gen Electric | Dynamoelectric machine and its rotor structures |
JPH0937591A (en) | 1995-07-18 | 1997-02-07 | Secoh Giken Inc | Plural phase reluctance motor |
JPH10509859A (en) | 1995-09-20 | 1998-09-22 | ジョージア テック リサーチ コーポレーション | Method and apparatus for controlling magnetoresistive switching motor |
US5701064A (en) | 1995-10-27 | 1997-12-23 | Emerson Electric Co. | Rotor position sensing in a dynamoelectric machine using coupling between machine coils |
US5740880A (en) | 1995-12-07 | 1998-04-21 | Ford Global Technologies, Inc. | Speed tracking of induced armature field in electric power assisted steering |
GB9525952D0 (en) | 1995-12-19 | 1996-02-21 | Switched Reluctance Drives Ltd | Sensorless rotor position monitoring in reluctance machines |
GB2310545B (en) * | 1996-02-22 | 2000-04-19 | Honda Motor Co Ltd | Stator core and method and apparatus for assembling same |
WO1997031422A1 (en) | 1996-02-23 | 1997-08-28 | Matsushita Electric Industrial Co., Ltd. | Motor |
GB9606802D0 (en) | 1996-03-30 | 1996-06-05 | Lucas Ind Plc | Current limiter for an EPAS system |
US6359412B1 (en) * | 1996-04-09 | 2002-03-19 | Hamilton Sundstrand Corporation | Commutation apparatus and method for a four state sensorless switched reluctance machine system utilizing machine winding current sensing |
GB9607688D0 (en) | 1996-04-12 | 1996-06-12 | Switched Reluctance Drives Ltd | Current shaping in reluctance machines |
US5743721A (en) | 1996-04-30 | 1998-04-28 | Itt Automotive Electrical Systems, Inc. | Blower assembly having integral air flow cooling duct |
JP3599144B2 (en) | 1996-05-09 | 2004-12-08 | 本田技研工業株式会社 | Vehicle steering assist system |
US6389678B1 (en) | 1996-05-31 | 2002-05-21 | Emerson Electric Co. | Method of constructing a salient pole motor |
US5877568A (en) | 1996-05-31 | 1999-03-02 | Emerson Electric Co. | Rotor position sensing system |
DE19622186A1 (en) | 1996-06-03 | 1997-12-04 | Hilti Ag | Electric motor |
US5783916A (en) | 1996-07-02 | 1998-07-21 | Dana Corporation | Apparatus and method for generating rotor position signals and controlling commutation in a variable reluctance electric motor |
JP3290354B2 (en) | 1996-07-05 | 2002-06-10 | 株式会社東芝 | Washing machine and driving method of washing machine |
DE19632136A1 (en) | 1996-08-09 | 1998-02-12 | Deutsche Telekom Ag | Digital storage element |
US5720065A (en) | 1996-09-11 | 1998-02-24 | White Consolidated Industries, Inc. | Direct drive discriminator mechanism |
JP3568364B2 (en) | 1996-09-30 | 2004-09-22 | 松下電器産業株式会社 | Rotating machine core |
US5777416A (en) | 1996-12-23 | 1998-07-07 | Dana Corporation | Switched reluctance motor with low mutual inductance between phases |
US5811905A (en) * | 1997-01-07 | 1998-09-22 | Emerson Electric Co. | Doubly-fed switched reluctance machine |
US5929590A (en) | 1997-01-07 | 1999-07-27 | Emerson Electric Co. | Method and apparatus for implementing sensorless control of a switched reluctance machine |
US5883485A (en) | 1997-03-26 | 1999-03-16 | A. O. Smith Corporation | Simplified control for running a switched reluctance motor |
JP3680482B2 (en) | 1997-03-28 | 2005-08-10 | 松下電器産業株式会社 | Electric motor stator constituent member, electric motor stator, electric motor manufacturing method |
DE19724475B4 (en) | 1997-06-10 | 2010-08-05 | BSH Bosch und Siemens Hausgeräte GmbH | Drive device for a front-loadable washing machine |
JP3981438B2 (en) * | 1997-07-14 | 2007-09-26 | ピア株式会社 | Car lamp mounting structure |
JP4026887B2 (en) | 1997-07-24 | 2007-12-26 | 本田技研工業株式会社 | Electric power steering device |
JP3745884B2 (en) | 1997-08-20 | 2006-02-15 | ミネベア株式会社 | Motor structure and manufacturing method thereof |
JP3415406B2 (en) * | 1997-09-05 | 2003-06-09 | トヨタ自動車株式会社 | Magnet-embedded AC motor and its design method |
US6107772A (en) | 1997-09-26 | 2000-08-22 | Dana Corporation | Sensorless switched reluctance motor control |
JP3450710B2 (en) | 1997-10-24 | 2003-09-29 | オークマ株式会社 | Switch reluctance motor |
US6066905A (en) | 1997-11-05 | 2000-05-23 | General Electric Company | Dynamoelectric machine: quadrature winding retention apparatus |
KR100259375B1 (en) | 1997-11-10 | 2000-06-15 | 윤종용 | A device for and a method of driving sensorless srm |
US5859518A (en) | 1997-12-22 | 1999-01-12 | Micro Linear Corporation | Switched reluctance motor controller with sensorless rotor position detection |
AU1931099A (en) | 1997-12-23 | 1999-07-12 | Emerson Electric Co. | Electromagnetic device having encapsulated construction and precise positioning of bearing and shaft axes |
IT245840Y1 (en) | 1998-05-07 | 2002-03-26 | Bitron Spa | ELECTRONICALLY COMMUTED ELECTRIC MOTOR. |
US6104113A (en) | 1998-05-14 | 2000-08-15 | General Electric Company | Coil assembly for sensorless rotor angular position control of single phase permanent magnet motor |
US5979195A (en) | 1998-05-15 | 1999-11-09 | Maytag Corporation | Seal arrangement between inner and outer tubs of a horizontal axis washing machine |
JP3535012B2 (en) * | 1998-06-09 | 2004-06-07 | ミネベア株式会社 | Radial gap type small cylindrical rotating electric machine |
JP3279279B2 (en) * | 1998-06-30 | 2002-04-30 | 三菱電機株式会社 | Iron core equipment |
DE19831165A1 (en) | 1998-07-11 | 2000-01-13 | Bosch Gmbh Robert | Electrical machine, in particular reluctance motor |
DE19933009A1 (en) * | 1998-07-24 | 2000-02-10 | Matsushita Electric Ind Co Ltd | Electric motor e.g. for automobile air conditioning unit, has rotor core provided with slits for reception of internal permanent magnets with non-magnetic section between each permanent magnet and rotor periphery |
JP3318531B2 (en) | 1998-08-04 | 2002-08-26 | ミネベア株式会社 | Rotating electric machine and its bearing structure |
JP3421251B2 (en) | 1998-08-21 | 2003-06-30 | ミネベア株式会社 | Rotating electric machine and its bobbin |
US6452302B1 (en) | 1998-09-28 | 2002-09-17 | Hitachi, Ltd. | Rotary electric machine and electric vehicle using the same |
BR9804426A (en) | 1998-10-16 | 2000-05-16 | Elevadores Atlas S A | Electric machine of subsynchronous reluctance. |
US6211587B1 (en) | 1998-11-12 | 2001-04-03 | Hitachi, Ltd. | Electric rotating machine |
US5994804A (en) | 1998-12-07 | 1999-11-30 | Sundstrand Corporation | Air cooled dynamoelectric machine |
JP4147706B2 (en) * | 1998-12-18 | 2008-09-10 | トヨタ自動車株式会社 | Electrical angle detection device, detection method, and motor control device |
US6011368A (en) | 1999-03-30 | 2000-01-04 | Dana Corporation | Sensorless detection of a locked rotor in a switched reluctance motor |
US6122579A (en) | 1999-05-28 | 2000-09-19 | Delphi Technologies, Inc. | Electric power steering control with torque ripple and road disturbance damper |
GB9914402D0 (en) | 1999-06-22 | 1999-08-18 | Univ Warwick | Electrial machines |
EP1216475A1 (en) | 1999-09-17 | 2002-06-26 | Delphi Technologies, Inc. | Method and apparatus for robust generation of an index pulse for an electric power steering system |
WO2001020761A1 (en) | 1999-09-17 | 2001-03-22 | Delphi Technologies, Inc. | Method and system for controlling torque in permanent magnet brushless electric motors |
US6441572B2 (en) * | 1999-12-14 | 2002-08-27 | The Penn State Research Foundation | Detection of rotor angle in a permanent magnet synchronous motor at zero speed |
GB9929655D0 (en) | 1999-12-15 | 2000-02-09 | Switched Reluctance Drives Ltd | Rotor position monitoring of a switched reluctance drive |
JP2001238377A (en) | 2000-02-24 | 2001-08-31 | Minebea Co Ltd | Rotating electric machine |
US6487769B2 (en) | 2000-11-30 | 2002-12-03 | Emerson Electric Co. | Method and apparatus for constructing a segmented stator |
-
2001
- 2001-03-12 US US09/803,876 patent/US7012350B2/en not_active Expired - Lifetime
-
2002
- 2002-03-12 CN CNA028079469A patent/CN1502161A/en active Pending
- 2002-03-12 MX MXPA03008256A patent/MXPA03008256A/en active IP Right Grant
- 2002-03-12 EP EP02709814A patent/EP1374374A1/en not_active Ceased
- 2002-03-12 WO PCT/US2002/007261 patent/WO2002073778A1/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1811585A1 (en) * | 1967-12-29 | 1969-07-17 | Leuenberger H | Process for manufacturing a laminated core and a laminated core manufactured according to this |
JPH10174319A (en) * | 1996-12-17 | 1998-06-26 | Shinko Electric Co Ltd | Stator of electric rotary machine |
JPH10210721A (en) * | 1997-01-20 | 1998-08-07 | Mitsubishi Electric Corp | Reluctance motor |
JPH1118331A (en) * | 1997-06-30 | 1999-01-22 | Matsushita Electric Ind Co Ltd | Stator of motor |
JPH11289701A (en) * | 1998-04-03 | 1999-10-19 | Nissan Motor Co Ltd | Stator of reluctance motor |
JPH11341717A (en) * | 1998-05-28 | 1999-12-10 | Matsushita Seiko Co Ltd | Stator of motor and its manufacture |
JP2000224790A (en) * | 1999-02-01 | 2000-08-11 | Hitachi Ltd | Rotating machine and motor-driven vehicle with the machine |
Non-Patent Citations (6)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) * |
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 13 30 November 1998 (1998-11-30) * |
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 04 30 April 1999 (1999-04-30) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 01 31 January 2000 (2000-01-31) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 03 30 March 2000 (2000-03-30) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 11 3 January 2001 (2001-01-03) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016161509A1 (en) * | 2015-04-06 | 2016-10-13 | Mcmaster University | Switched reluctance machine with toroidal winding |
US20180083519A1 (en) * | 2015-04-06 | 2018-03-22 | Mcmaster University | Switched reluctance machine with toroidal winding |
US10720819B2 (en) | 2015-04-06 | 2020-07-21 | Mcmaster University | Switched reluctance machine with toroidal winding |
Also Published As
Publication number | Publication date |
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MXPA03008256A (en) | 2003-12-11 |
EP1374374A1 (en) | 2004-01-02 |
US20020125782A1 (en) | 2002-09-12 |
CN1502161A (en) | 2004-06-02 |
US7012350B2 (en) | 2006-03-14 |
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