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WO1993007672A1 - Moteur a champ tournant - Google Patents

Moteur a champ tournant Download PDF

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Publication number
WO1993007672A1
WO1993007672A1 PCT/EP1992/002312 EP9202312W WO9307672A1 WO 1993007672 A1 WO1993007672 A1 WO 1993007672A1 EP 9202312 W EP9202312 W EP 9202312W WO 9307672 A1 WO9307672 A1 WO 9307672A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnets
rotor
field motor
rotary field
groups
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1992/002312
Other languages
German (de)
English (en)
Inventor
Wilfried Leutner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of WO1993007672A1 publication Critical patent/WO1993007672A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H02K1/2781—Magnets shaped to vary the mechanical air gap between the magnets and the stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems

Definitions

  • the invention relates to a rotary field motor according to the preamble of claim 1, which is particularly suitable for use in motor vehicles.
  • Such a rotating field motor is known from P 40 25 173.3.
  • the most important components of the known rotary field motor consist of a rotor which is rotatably mounted in a stator. This rotor has a certain number of poles, which are symmetrical and on the outer surface of the rotor
  • the unstable position is the one in which the same permanent magnet is located in the middle between two webs, that is to say in the middle of the groove.
  • the stator has a laminated stator core with a number of grooves
  • each winding strand of the stator winding is in several turns around a web two grooves adjacent to the web of the stator laminated core are arranged and consist of two parts which are arranged radially one above the other on the web.
  • the winding strands are made of flat copper wire.
  • each individual permanent magnet When the rotor rotates, each individual permanent magnet creates a so-called cogging torque ( trimIR) on the outer surface of the rotor.
  • the total cogging torque (MR) is the sum of all individual cogging torques.
  • the size of the total cogging torque (MR) depends, among other things, on the teeth of the stator. Serration means the number of webs or grooves per unit length or their width. The coarser the teeth, the greater the cogging torque to be overcome.
  • Three-phase motors with individual coils made of flat copper wire as are known from the above-mentioned document and are used in particular in motor vehicles, generally have a relatively coarse toothing and therefore also have a relatively large cogging torque (MR).
  • MR cogging torque
  • this object is achieved by the rotating field motor characterized in claim 1. Thereafter, the permanent magnets are arranged at non-uniform intervals on the outer surface of the rotor, so that the cogging moments of the individual permanent magnets largely compensate.
  • This division of the permanent magnets can take place in such a way that the permanent magnets are arranged in such a way that when a certain permanent magnet is in the central position under a web of the stator, a second permanent magnet is located centrally under a groove. A third permanent magnet then protrudes counter-clockwise from the central web position by a quarter web angle. A fourth permanent magnet is also rotated counterclockwise from the central groove position by a quarter web angle. A web angle is the angle between two adjacent webs.
  • Show it 1 shows a rotary field motor according to the invention in cross section, in which the stator windings are not shown and the permanent magnets are shown on the lateral surface of the rotor; 2A-2F the cogging torques as a function of the angle of rotation of the rotor
  • Fig. 1 the rotary field motor according to the invention is shown in cross section, but not with the associated two-part stator windings.
  • the stator 1 consists of a laminated stator laminated from dynamo sheet. In this stator laminated core there are a number of webs 2 with grooves 3 lying between them.
  • a rotor 4 is rotatably mounted in the stator laminated core bore, on the lateral surface of which permanent magnets (5, 6) are arranged at non-uniform intervals on the lateral surface of the rotor 4 ⁇ are classified.
  • the ratio of the number of slots 3 and webs 2 of the stator 1 to the number of poles, i.e. the number of permanent magnets (5, 6) on the outer surface of the rotor 4 is 3: 2.
  • the above-mentioned stator winding is divided into several winding phases.
  • the individual winding strands consist of copper flat wire. Each winding strand is wound around one of the webs 2, so that its turns are each in a groove 3, which is adjacent to the web 2.
  • the webs 2 have a rectangular cross section perpendicular to the axis of the stator 1.
  • the rotor 4 is composed of various components. These are essentially the base body of the rotor 4 and the permanent magnets (5, 6) attached to the base body.
  • the lateral surface consists of a large number of square, straight surfaces to which the permanent magnets are applied.
  • these quadrangular surfaces 7 are designed to be flat so that the permanent magnets (5, 6) provided with a flat base surface can also be applied thereon.
  • the permanent magnets 5a and 6a are in a symmetrical position with respect to the corresponding webs 2 of the stator.
  • the two permanent magnets 5b and 6b are likewise symmetrical to one another, but in a central position above the corresponding groove 3.
  • the individual permanent magnets 5c and 5d are four square in relation to a symmetrical central position under a web 2 or groove 3 tel web angle twisted counterclockwise.
  • the individual permanent magnets 5a-5d form a group.
  • the following group of individual magnets (6a-6d) is attached to the outer surface of the rotor 4 analogously to the first group (5a-5d).
  • the locking moments (m R ) of the individual permanent magnets 5a and 5b are shown in FIG. 2A.
  • the individual permanent magnet 5a initially generates a left-turning moment, which is entered in the first quadrant of the coordinate system.
  • ⁇ the angle of rotation of the rotor 4
  • a maximum value is reached, which drops again when the rotor 4 rotates further. This drop is not symmetrical with the rise of this curve branch. If the rotor is turned further, the individual Permanent magnet 5a in the middle of the groove 3 and there is an unstable equilibrium, so that the cogging torque is zero.
  • the slope of the curve is different in the stable and the unstable zero position.
  • the result is a curve as shown in FIG. 2A with the letter a.
  • the individual permanent magnets 5a and 5b are currently in a stable or unstable zero position. This is the starting point, i.e. the origin in the shown coordinate system for curves a and b.
  • the permanent magnets 5c and 5d would be in the same position with respect to the webs 2 and the grooves 3 of the stator 1.
  • analog curves according to FIG 2C result, which represents the total torque of the individual magnets 5a and 5b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

La présente invention se rapporte à un moteur à champ tournant comportant un stator (1) dont la denture est relativement grossière et dans lequel est situé un rotor (4) sur l'enveloppe duquel sont fixés des aimants permanents individuels (5, 6). La particularité du rotor (4) consiste en ce que les aimants permanents (5, 6) sont disposés à intervalles irréguliers sur l'enveloppe du rotor (4), de manière à ce que les moments d'arrêt des différents aimants permanents (5a-5d, 6a-6d) se compensent largement.
PCT/EP1992/002312 1991-10-11 1992-10-07 Moteur a champ tournant Ceased WO1993007672A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4133723A DE4133723A1 (de) 1991-10-11 1991-10-11 Drehfeldmotor
DEP4133723.9 1991-10-11

Publications (1)

Publication Number Publication Date
WO1993007672A1 true WO1993007672A1 (fr) 1993-04-15

Family

ID=6442510

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/002312 Ceased WO1993007672A1 (fr) 1991-10-11 1992-10-07 Moteur a champ tournant

Country Status (2)

Country Link
DE (1) DE4133723A1 (fr)
WO (1) WO1993007672A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0778654A3 (fr) * 1995-12-07 1998-10-07 FER Fahrzeugelektrik GmbH Alternateur triphasé pour bicyclettes
CN105322749A (zh) * 2014-07-31 2016-02-10 操纵技术Ip控股公司 无刷电机的转子
EP3306795A1 (fr) 2016-09-30 2018-04-11 Huangshi Dongbei Electrical Appliance Co., Ltd. Rotor de moteur sans balai
US10164486B2 (en) 2012-08-01 2018-12-25 Moving Magnet Technologies (Mmt) Optimized electric motor with narrow teeth
EP4184757A4 (fr) * 2020-07-17 2024-08-14 LG Innotek Co., Ltd. Moteur

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726948B1 (fr) † 1994-11-16 1996-12-20 Wavre Nicolas Moteur synchrone a aimants permanents
DE19511434C2 (de) * 1995-03-29 2002-01-17 Thomas Strothmann Elektrische Maschine mit reduziertem Rastmoment
DE19546336A1 (de) * 1995-11-17 1997-05-22 Klein Schanzlin & Becker Ag Magnetkupplung für eine Kreiselpumpe
JP3995450B2 (ja) 2000-12-20 2007-10-24 ヤマハモーターエレクトロニクス株式会社 永久磁石型回転電機
EP1217713B1 (fr) * 2000-12-20 2010-02-10 Yamaha Motor Electronics Kabushiki Kaisha Rotor du type à aimant permanent et machine électrique du type à aimant permanent
EP1233503A3 (fr) 2001-02-14 2004-12-01 Koyo Seiko Co., Ltd. Moteur à courant continu sans balais et son procédé de fabrication
ES2199051A1 (es) * 2002-03-25 2004-02-01 Nork 2 S L Motor compacto para ascensores.
DE10303848A1 (de) 2003-01-30 2004-08-19 Rexroth Indramat Gmbh Drehstrommaschine mit optimierten Laufeigenschaften
DE102006048966A1 (de) * 2006-10-17 2008-04-30 Siemens Ag Magnetmodul für eine permanentmagneterregte elektrische Maschine
AT509968B1 (de) 2010-05-20 2012-05-15 Austrian Ct Of Competence In Mechatronics Gmbh Verfahren zur reduktion eines rastmoments einer elektrischen maschine
DE102012003944A1 (de) 2012-02-28 2013-08-29 Peter Frieden Felgendynamo für Sport- und Rennräder

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1413365A (fr) * 1964-10-22 1965-10-08 Int Register Co Moteur électrique
DE3246596C1 (de) * 1982-12-16 1984-04-19 Berger Lahr GmbH, 7630 Lahr Synchronmotor
DE3506151A1 (de) * 1984-02-23 1985-08-29 Paul 2857 Langen Hasselbach Selbstanlaufender synchronmotor
WO1986001652A1 (fr) * 1984-08-31 1986-03-13 Ab Elmo Servomoteur synchrone
US4713569A (en) * 1986-06-20 1987-12-15 501 Aeroflex Laboratories, Incorporated Low cogging motor
US4769567A (en) * 1986-06-23 1988-09-06 Tamagawa Seiki Kabushiki Kaisha Brushless DC motor with cogging reduction
DE4008446A1 (de) * 1989-03-24 1990-09-27 Gen Electric Vielstufige, formgewickelte spulenwicklungen fuer einen geschalteten reluktanzmotor
WO1992002982A1 (fr) * 1990-08-08 1992-02-20 Zahnradfabrik Friedrichshafen Ag Moteur a champ magnetique rotatif

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1413365A (fr) * 1964-10-22 1965-10-08 Int Register Co Moteur électrique
DE3246596C1 (de) * 1982-12-16 1984-04-19 Berger Lahr GmbH, 7630 Lahr Synchronmotor
DE3506151A1 (de) * 1984-02-23 1985-08-29 Paul 2857 Langen Hasselbach Selbstanlaufender synchronmotor
WO1986001652A1 (fr) * 1984-08-31 1986-03-13 Ab Elmo Servomoteur synchrone
US4713569A (en) * 1986-06-20 1987-12-15 501 Aeroflex Laboratories, Incorporated Low cogging motor
US4769567A (en) * 1986-06-23 1988-09-06 Tamagawa Seiki Kabushiki Kaisha Brushless DC motor with cogging reduction
DE4008446A1 (de) * 1989-03-24 1990-09-27 Gen Electric Vielstufige, formgewickelte spulenwicklungen fuer einen geschalteten reluktanzmotor
WO1992002982A1 (fr) * 1990-08-08 1992-02-20 Zahnradfabrik Friedrichshafen Ag Moteur a champ magnetique rotatif

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0778654A3 (fr) * 1995-12-07 1998-10-07 FER Fahrzeugelektrik GmbH Alternateur triphasé pour bicyclettes
US10164486B2 (en) 2012-08-01 2018-12-25 Moving Magnet Technologies (Mmt) Optimized electric motor with narrow teeth
EP3595133A1 (fr) 2012-08-01 2020-01-15 Moving Magnet Technologies Moteur électrique optimisé à dents étroites
CN105322749A (zh) * 2014-07-31 2016-02-10 操纵技术Ip控股公司 无刷电机的转子
EP3306795A1 (fr) 2016-09-30 2018-04-11 Huangshi Dongbei Electrical Appliance Co., Ltd. Rotor de moteur sans balai
EP4184757A4 (fr) * 2020-07-17 2024-08-14 LG Innotek Co., Ltd. Moteur

Also Published As

Publication number Publication date
DE4133723A1 (de) 1993-04-15

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