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WO2008003598A1 - Moteur électrique avec réglage de vitesse - Google Patents

Moteur électrique avec réglage de vitesse Download PDF

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Publication number
WO2008003598A1
WO2008003598A1 PCT/EP2007/056229 EP2007056229W WO2008003598A1 WO 2008003598 A1 WO2008003598 A1 WO 2008003598A1 EP 2007056229 W EP2007056229 W EP 2007056229W WO 2008003598 A1 WO2008003598 A1 WO 2008003598A1
Authority
WO
WIPO (PCT)
Prior art keywords
brush
brushes
electric motor
speed
poles
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/EP2007/056229
Other languages
German (de)
English (en)
Inventor
Michael Albrecht
Martin Heyder
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2008003598A1 publication Critical patent/WO2008003598A1/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
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/20—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having additional brushes spaced intermediately of the main brushes on the commutator, e.g. cross-field machines, metadynes, amplidynes or other armature-reaction excited machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation

Definitions

  • the present invention relates to an electric motor with speed setting.
  • a third brush for speed adjustment in 2-pole motors is e.g. known at wiper motors.
  • Such an engine is shown schematically in FIG.
  • the direction of rotation of the armature 5 provided here with twelve commutator bars is to the right, the motor has two oppositely poled magnetic poles 4a, 4b, a first lying at 0 ° brush 1, a second lying at 180 ° brush 2, ie the first brush 1 opposite is arranged, and a to the first brush 1 against the direction of rotation of the armature 5 shifted arranged third brush 3.
  • the two opposing brushes i. the first brush 1 and the second brush 2 energized.
  • the third brush 3 is de-energized.
  • the third brush 3 and the second brush 2 are energized.
  • the brush 1 is now de-energized. Since in the high speed stage, a part of the current flow causes a braking torque and in addition increases the resistance of the current path, a tilt of the characteristic of the electric motor and a reduction of the starting torque is effected. As a result, an increase in the rotational speed is achieved with a corresponding position of the operating point on the torque characteristic curve.
  • the desired characteristic spread can be adjusted. The larger the angle between the first brush 1 and the third brush 3, the stronger the characteristic spread is.
  • the magnetic flux is divided into several sub-paths, whereby the yoke thickness can be reduced
  • the armature transverse field, which leads to the demagnetization of the magnets is also divided into several sub-paths, whereby the magnetic thickness can be reduced without a demagnetization occurs, and
  • the armature winding has at higher number of poles on a smaller winding step, resulting in a reduction of the winding heads and thus to save copper and a reduction in the
  • the number of brushes In the design of a 4-pole and multi-pole motor, first, when using a loop winding, the number of brushes must be adjusted in accordance with the increase in the number of poles, i.e., the number of brushes. In the transition from two to four magnetic poles, the number of brushes must also increase from two to four.
  • the commutator bars which have contact with the brushes of the same polarity in an armature position, can be electrically connected by so-called equalizing conductors.
  • the motor can continue to be operated with only two brushes.
  • such 4 and multipole motors only have one speed level, i. they require an external speed setting, e.g. by controlling the voltage or by using series resistors to realize different speed levels.
  • the electric motor according to the invention with the features of claim 1 has the advantage that the advantages of the high pole, namely the lower material usage and space requirements, combined with the favorable method of speed setting by using a third brush.
  • This is inventively achieved in that in an electric motor with a number n of poles, where n is even and greater than 2, and a number m of brushes, with 2 ⁇ m ⁇ n, a number r of additional brushes for speed setting, with 1 ⁇ r ⁇ n / 2, is provided.
  • an additional brush is provided according to the invention per pole pair having a pair of brushes.
  • the electric motor is constructed in such a way that, for example through the use of equalizing conductors, not every pair of poles has a pair of brushes, the number of additional brushes can also be correspondingly reduced. Furthermore, even with the use of equalizing conductors, a higher number of brushes up to the full number n + n / 2 of brushes is possible, whereby a redundancy is given.
  • the electric motor according to the invention has a number of additional brushes in at least four poles, which corresponds at least to the intended brush pairs for driving the motor in only one speed step without the use of equalizing conductors or corresponding internal interconnections. This additional brush (s) then reaches a second speed level.
  • equalizing conductors between the corresponding Kommutatorlamellen preferred because then still a minimum number of brushes, ie in particular only three brushes is needed and a brush holder with six or more brushes, which is difficult to implement constructively especially for small motor diameters, not provided needs to be.
  • equalizing conductors which are normally laid extra during the winding, internal interconnections of the corresponding commutator segments can also be provided, the interconnection then being provided directly in the commutator.
  • n 4
  • the electric motor according to the invention comprises fourteen uniformly distributed commutator bars, of which in each case opposite commutator bars are connected by a respective compensation conductor or an internal interconnection.
  • a first brush and a second brush via which the electric motor is operated in a first speed stage, arranged at an angle of 90 ° mechanically to each other, and a third brush via which the electric motor together with the second brush in one second speed is operated, is arranged either in a position between the first and the second brush or in a position offset by 180 ° to this position. It is also possible according to the invention that the first brush and / or the second brush are arranged offset by 180 ° to the specified position.
  • the electric motor according to the invention is not limited to a number of four poles in a number of three brushes. Likewise, more or fewer than fourteen evenly distributed commutator bars may be provided and the offset of the brushes from each other may also be different depending on the selected motor design.
  • an A- and multi-pole motor having at least one brush pair is provided with an additional brush for each intended pair of brushes.
  • the additional brush is arranged either in a position between the brushes of the brush pair or in a position offset by a certain angle to this position. This particular angle is determined by the arrangement of equalizing conductors or internal interconnections. In the case that opposite commutator bars are connected by a respective equalizing conductor or a respective internal interconnection, it is 180 °.
  • each three evenly over The commutator blades distributed around the circumference are connected to a compensating conductor or an internal shading, it is 120 ° or 240 °.
  • a respective third brush if not disposed in the position between the brushes of the pair of brushes, is placed in such a position that the same commutator bars are energized as when the third brush is in the position between the pair of brushes would be arranged.
  • the brushes of the brush pair can also be arranged offset accordingly.
  • a higher number of brushes than three may be provided. These are then each arranged in one or more of the positions into which the respective third brush could be moved.
  • FIG. 1 shows a brush arrangement according to a first preferred embodiment of a four-pole motor according to the invention with three brushes, in which opposite commutator bars are connected to equalizing conductors,
  • Figure 2 shows a second preferred embodiment of a brush assembly of a 4-pole motor according to the invention with three brushes, in which opposite commutator bars are connected with equalizing conductors, and
  • Figure 3 shows a brush positioning of a 2-pole motor with three brushes according to the prior art
  • the preferred embodiments are 4-pole wiper motors with equalizing conductors.
  • the stator has fourteen grooves, respectively, according to the commutator has fourteen commutator bars 5a, of which in each case the opposite commutator bars are connected by a (not shown) balancing conductor.
  • the four stator poles are shown schematically by four alternating polarized magnetic poles 4a-4d.
  • the third brush to which the positive operating voltage is applied in the second speed stage, is arranged offset between the first brush 1 and the second brush 2 at an angle of 35 ° to the first brush 1.
  • the third brush 3 can be arranged according to the invention also 180 ° mechanically offset to this position.
  • the second embodiment shown in Figure 2 in which the third brush 3 is arranged offset by 225 ° from the first brush 1, wherein the angle of 225 ° here against the direction of rotation of the rotor 5 is measured, as well as the offset of 90 ° of the second brush 2 to the first brush 1 and the offset of 35 ° between the first brush 1 and the third brush 3 in the first embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

La présente invention concerne un moteur électrique comprenant un nombre n de pôles (4a - 4d), n étant un nombre pair supérieur à 2, et un nombre m de balais (1, 2), m étant supérieur ou égal à 2 et inférieur ou égal à n. Ce moteur électrique se caractérise en ce qu'il comprend un nombre r de balais additionnels (3) pour régler la vitesse, r étant supérieur ou égal à 1 et inférieur ou égal à n/2.
PCT/EP2007/056229 2006-07-04 2007-06-22 Moteur électrique avec réglage de vitesse Ceased WO2008003598A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610030721 DE102006030721A1 (de) 2006-07-04 2006-07-04 Elektromotor mit Drehzahlstellung
DE102006030721.6 2006-07-04

Publications (1)

Publication Number Publication Date
WO2008003598A1 true WO2008003598A1 (fr) 2008-01-10

Family

ID=38477151

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/056229 Ceased WO2008003598A1 (fr) 2006-07-04 2007-06-22 Moteur électrique avec réglage de vitesse

Country Status (2)

Country Link
DE (1) DE102006030721A1 (fr)
WO (1) WO2008003598A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033867A1 (de) * 2008-07-19 2010-02-04 Faurecia Autositze Gmbh Gleichstrom-Kommutatormotor, insbesondere für eine Fahrzeugkomponentenverstellung
JP2016042786A (ja) * 2008-11-21 2016-03-31 アスモ株式会社 モータ

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5649444B2 (ja) * 2008-03-24 2015-01-07 株式会社ミツバ モータ
EP2313961B1 (fr) * 2008-07-19 2017-10-04 Faurecia Autositze GmbH Moteur à courant continu à collecteur, en particulier pour un système de réglage d'élément de véhicule

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06217506A (ja) * 1993-01-19 1994-08-05 Riken Corp 直流モータ
US20020130579A1 (en) * 2001-03-19 2002-09-19 Kiyonori Moroto DC motor and method of controlling the same
DE10328806A1 (de) * 2002-10-31 2004-05-27 Continental Teves Ag & Co. Ohg Kraftfahrzeugbremsanlage mit einer Elektronikeinheit und mit einer Hydraulikeinheit
JP2005253135A (ja) * 2004-03-01 2005-09-15 Aisan Ind Co Ltd 直流モータ
JP2006353019A (ja) * 2005-06-16 2006-12-28 Mitsuba Corp 多極モータ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06217506A (ja) * 1993-01-19 1994-08-05 Riken Corp 直流モータ
US20020130579A1 (en) * 2001-03-19 2002-09-19 Kiyonori Moroto DC motor and method of controlling the same
DE10328806A1 (de) * 2002-10-31 2004-05-27 Continental Teves Ag & Co. Ohg Kraftfahrzeugbremsanlage mit einer Elektronikeinheit und mit einer Hydraulikeinheit
JP2005253135A (ja) * 2004-03-01 2005-09-15 Aisan Ind Co Ltd 直流モータ
JP2006353019A (ja) * 2005-06-16 2006-12-28 Mitsuba Corp 多極モータ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033867A1 (de) * 2008-07-19 2010-02-04 Faurecia Autositze Gmbh Gleichstrom-Kommutatormotor, insbesondere für eine Fahrzeugkomponentenverstellung
JP2016042786A (ja) * 2008-11-21 2016-03-31 アスモ株式会社 モータ

Also Published As

Publication number Publication date
DE102006030721A1 (de) 2008-01-10

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