DE10053400A1 - Axial flow motor for concentrating flow with permanent magnet excitation has a stator and a rotor with flow concentration pieces of soft magnetic material and permanent magnets magnetized at a tangent to the direction of movement. - Google Patents

Axial flow motor for concentrating flow with permanent magnet excitation has a stator and a rotor with flow concentration pieces of soft magnetic material and permanent magnets magnetized at a tangent to the direction of movement.

Info

Publication number
DE10053400A1
DE10053400A1 DE10053400A DE10053400A DE10053400A1 DE 10053400 A1 DE10053400 A1 DE 10053400A1 DE 10053400 A DE10053400 A DE 10053400A DE 10053400 A DE10053400 A DE 10053400A DE 10053400 A1 DE10053400 A1 DE 10053400A1
Authority
DE
Germany
Prior art keywords
stator
flow
rotor
permanent magnets
magnetic material
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.)
Withdrawn
Application number
DE10053400A
Other languages
German (de)
Inventor
Uwe Schaefer
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE10053400A priority Critical patent/DE10053400A1/en
Publication of DE10053400A1 publication Critical patent/DE10053400A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • 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
    • H02K1/2793—Rotors axially facing stators
    • H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2798—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the stator face a rotor

Abstract

A rotor (4) has flow concentration pieces (41) of soft magnetic material and permanent magnets (42) magnetized at a tangent to the direction of movement. The area for the magnetic flow of the permanent magnets to enter into the flow concentration pieces is considerably greater than the area for the same flow from the flow concentration pieces to move across an air gap into a stator (1) with a ring core made of soft magnetic material (11) and a smooth-core Gramme winding (12).

Description

Die Erfindung bezieht sich auf einen Axialflussmotor zur Flusskonzentration mit permanentmagnetischer Erregung, mit wenigstens einem Stator und wenigstens einem Rotor.The invention relates to an axial flux motor for Flux concentration with permanent magnetic excitation, with at least one stator and at least one rotor.

In vielen Anwendungen werden Elektromotoren benötigt, die vergleichsweise kurz ausgeführt sind und einen entsprechend großen Durchmesser aufweisen. Derartige Anwendungen sind beispielsweise Starter-Generatoren in Kraftfahrzeugen, Windkraftanlagen oder Antriebe für Schiffe.Electric motors are required in many applications are comparatively short and one accordingly have a large diameter. Such applications are for example starter generators in motor vehicles, Wind turbines or drives for ships.

In solchen Fällen werden vorzugsweise Axialflussmotoren mit ringförmigen Scheibenläufern eingesetzt. Wenn hier noch ein hohes Drehmoment im Bauraum realisiert werden soll, kommt im Läufer meist eine permanentmagnetische Erregung zur Anwendung.In such cases, axial flux motors are preferred annular disc rotors used. If here is another high torque to be realized in the installation space comes in Runners usually use permanent magnetic excitation.

Fig. 1 zeigt den Stand der Technik von Axialflussmotoren, bestehend aus einem Stator 1 und zwei Rotoren 2 und 3. Der Stator 1 besteht beispielsweise aus einem Ringkern aus weichmagnetischem Material 11 sowie einer nutenlosen Gramme- Wicklung 12. Die zugehörigen Rotoren werden in axialer Richtung drehbar beiderseits des Stators 1 gelagert. Sie bestehen aus je einem Ringkern 21 bzw. 31 und einer der Polzahl entsprechenden Anzahl von Permanentmagneten 22 bzw. 32, die in axialer Richtung mit abwechselnder Polarität aufmagnetisiert sind. Dies ist beispielsweise anhand zweier Magnete anhand von Pfeilen in Magnetisierungsrichtung symbolisiert. Fig. 1 shows the prior art axial flux, consisting of a stator 1 and two rotors 2 and 3. The stator 1 consists, for example, of a toroidal core made of soft magnetic material 11 and a slotless gram winding 12 . The associated rotors are rotatably supported on both sides of the stator 1 in the axial direction. They each consist of a ring core 21 or 31 and a number of permanent magnets 22 or 32 corresponding to the number of poles, which are magnetized in the axial direction with alternating polarity. This is symbolized, for example, using two magnets using arrows in the direction of magnetization.

Derartige Axialflußmotoren sind auch mit je einem Statorring und einem Rotorring oder einer Vielzahl von in axialer Richtung abwechselnd hintereinander angeordneten Ringen ausführbar, wobei die Differenz der Stator- und Rotorringe 1, 0 oder -1 betragen kann.Such axial flux motors can also be implemented with one stator ring and one rotor ring or a plurality of rings arranged alternately one behind the other in the axial direction, the difference between the stator and rotor rings being 1 , 0 or -1.

Das Drehmoment von permanenterregten Motoren wird wesentlich durch den Betrag der Induktion bestimmt, die von den Rotormagneten im Luftspalt erzeugt wird. Axialfluss-Motoren nach dem Stand der Technik weisen daher eine Beschränkung des Drehmoments dadurch auf, dass die von den Rotoren erzeugte Magnetisierung durch die Remanenzinduktion der Permanentmagnete begrenzt wird.The torque of permanently excited motors becomes essential determined by the amount of induction by the Rotor magnet is generated in the air gap. Axial flux motors according to the prior art therefore have a limitation of Torque due to the fact that generated by the rotors Magnetization through the remanence induction of the Permanent magnets is limited.

Weiterhin werden diese Permanentmagnete bezüglich ihres Energieprodukts nicht optimal ausgenutzt, da im Interesse eines hohen Drehmoments der Arbeitspunkt des Magneten nicht im Optimalpunkt, sondern im Bereich höchstmöglicher Induktion gewählt wird.Furthermore, these permanent magnets with respect to their Energy product not optimally used because of interest a high torque the working point of the magnet is not in Optimal point, but in the area of the highest possible induction is chosen.

Der Erfindung liegt somit die Aufgabe zugrunde einen Axialflussmotor zur Flusskonzentration mit permanentmagnetischer Erregung, mit wenigstens einem Stator und wenigstens einem Rotor anzugeben, mit dem die aus dem Stand der Technik bekannten Nachteile überwunden werden. The invention is therefore based on the object Axial flux motor for flux concentration with permanent magnetic excitation, with at least one stator and specify at least one rotor with which the from the Disadvantages known in the art are overcome.  

Die Aufgabe wird gelöst durch einen Axialflussmotor zur Flusskonzentration mit permanentmagnetischer Erregung, mit wenigstens einem Stator und wenigstens einem Rotor, wobei gemäß der Erfindung der Rotor Flusskonzentrationsstücke aus weichmagnetischem Material und tangential zur Bewegungsrichtung aufmagnetisierte Permanentmagnete aufweist, wobei die Fläche, durch die der magnetische Fluss von den Permanentmagneten in die Flusskonzentrationsstücke eintritt, erheblich größer ist als die Fläche, durch die derselbe Fluss von den Flusskonzentrationsstücken über den Luftspalt in den Stator eintritt.The task is solved by an axial flow motor Flux concentration with permanent magnetic excitation, with at least one stator and at least one rotor, wherein according to the invention the rotor flux concentration pieces soft magnetic material and tangential to Has magnetized permanent magnets, where the area through which the magnetic flux flows from the Permanent magnets into which flux concentration pieces enter, is significantly larger than the area through which the same river from the river concentration pieces across the air gap in the Stator enters.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen wiedergegeben.Further advantageous embodiments of the invention are in the Sub-claims reproduced.

Die Erfindung wird anhand mehrerer Ausführungsbeispiele näher erläutert. Es zeigenThe invention is illustrated by several exemplary embodiments explained. Show it

Fig. 1 einen Axialflussmotor nach dem Stand der Technik; Fig. 1 is an axial flux motor according to the prior art;

Fig. 2 einen erfindungsgemäßen Axialflussmotor mit einem Stator und zwei Rotoren in schematischer Darstellung; und Figure 2 shows an axial flux motor according to the invention with a stator and two rotors in a schematic representation. and

Fig. 3 einen nutenbehafteten Stator in schematischer Darstellung. Fig. 3 shows a grooved stator in a schematic representation.

Fig. 2 zeigt einen Axialflussmotor mit einem Rotor 4 in schematischer Darstellung auf. Er besteht aus Flusskonzentrationsstücken 41 aus weichmagnetischem Material und tangential zur Bewegungsrichtung aufmagnetisierten Permanentmagneten 42. Die Magnetisierungsrichtung ist beispielsweise durch Pfeile in zwei Teilmagneten dargestellt. Die Anordnung ist dadurch gekennzeichnet, dass die Fläche, durch die der magnetische Fluss von den Permanentmagneten 42 in das Flusskonzentrationsstück 41 eintritt, erheblich größer ist als die Fläche, durch die derselbe Fluss vom Flusskonzentrationsstück 41 über den Luftspalt in den Stator 1 eintritt. Dadurch ist die Induktion im Luftspalt entsprechend dem Flächenverhältnis größer als in den Permanentmagneten 42 abzüglich etwaiger Streuverluste. Somit kann durch Anwendung der Flusskonzentration der Rotor 4 einerseits eine erheblich höhere Luftspaltinduktion erzeugen und andererseits können die Permanentmagnete 42 im Optimalpunkt betrieben werden. Dadurch wird das Gesamtvolumen der Permanentmagnete 42 reduziert. Die Probleme aus dem Stand der Technik werden somit überwunden. Fig. 2 shows an axial flux motor with a rotor 4 in a schematic representation. It consists of flux concentration pieces 41 made of soft magnetic material and permanent magnets 42 magnetized magnetically tangential to the direction of movement. The direction of magnetization is represented, for example, by arrows in two partial magnets. The arrangement is characterized in that the area through which the magnetic flux from the permanent magnets 42 enters the flux concentration piece 41 is considerably larger than the area through which the same flux from the flux concentration piece 41 enters the stator 1 via the air gap. As a result, the induction in the air gap corresponding to the area ratio is greater than in the permanent magnets 42 minus any scattering losses. Thus, by using the flux concentration, the rotor 4 can on the one hand generate a significantly higher air gap induction and on the other hand the permanent magnets 42 can be operated at the optimum point. The total volume of the permanent magnets 42 is thereby reduced. The problems from the prior art are thus overcome.

Eine weitere Ausprägung der Erfindung nutzt gemäß Fig. 3 einen nutenbehafteten Stator 51. Die Statorwicklung kann auch als konventionelle Wicklung 52 mit tangential geschlossenen Wickelköpfen ausgeführt werden. Eine solche Wicklung 52 wird vorzugsweise bei Anordnungen mit je einem Stator- und Rotorring eingesetzt.According to FIG. 3, another embodiment of the invention uses a stator 51 with grooves. The stator winding can also be designed as a conventional winding 52 with tangentially closed winding heads. Such a winding 52 is preferably used in arrangements with one stator and one rotor ring each.

Claims (4)

1. Axialflussmotor zur Flusskonzentration mit permanentmagnetischer Erregung, mit wenigstens einem Stator (1, 51) und wenigstens einem Rotor (4), dadurch gekennzeichnet, dass der Rotor (4) Flusskonzentrationsstücke (41) aus weichmagnetischem Material und tangential zur Bewegungsrichtung aufmagnetisierte Permanentmagnete (42) aufweist, wobei die Fläche, durch die der magnetische Fluss von den Permanentmagneten (42) in die Flusskonzentrationsstücke (41) eintritt, erheblich größer ist als die Fläche, durch die derselbe Fluss von den Flusskonzentrationsstücken (41) über den Luftspalt in den Stator (1, 51) eintritt.1. Axial flux motor for flux concentration with permanent magnetic excitation, with at least one stator ( 1 , 51 ) and at least one rotor ( 4 ), characterized in that the rotor ( 4 ) flux concentration pieces ( 41 ) made of soft magnetic material and magnetized permanent magnets ( 42 ), the area through which the magnetic flux from the permanent magnets ( 42 ) enters the flux concentration pieces ( 41 ) is considerably larger than the area through which the same flow from the flux concentration pieces ( 41 ) via the air gap into the stator ( 1 , 51 ) occurs. 2. Axialflussmotor nach Anspruch 1, dadurch gekennzeichnet, dass in axialer Richtung mehrere Statoren (1, 51) und Rotoren (4) hintereinander angeordnet sind, wobei die Differenz zwischen der Anzahl der Statoren (1, 51) und der Rotoren (4) 1, 0 oder -1 beträgt.2. Axial flux motor according to claim 1, characterized in that a plurality of stators ( 1 , 51 ) and rotors ( 4 ) are arranged one behind the other in the axial direction, the difference between the number of stators ( 1 , 51 ) and the rotors ( 4 ) 1 , 0 or -1. 3. Axialflussmotor nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die nutenbehaftete Wicklung des Stators (1) als Gramme- Wicklung ausgeführt ist.3. Axialflussmotor according to any one of claims 1 or 2, characterized in that the slot-wound winding of the stator ( 1 ) is designed as a gram winding. 4. Axialflussmotor nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die nutenbehaftete Wicklung des Stators (51) konventionell mit tangential geschlossenen Wickelköpfen ausgeführt ist.4. Axialflussmotor according to any one of claims 1 or 2, characterized in that the slot-wound winding of the stator ( 51 ) is conventionally carried out with tangentially closed winding heads.
DE10053400A 2000-10-21 2000-10-21 Axial flow motor for concentrating flow with permanent magnet excitation has a stator and a rotor with flow concentration pieces of soft magnetic material and permanent magnets magnetized at a tangent to the direction of movement. Withdrawn DE10053400A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10053400A DE10053400A1 (en) 2000-10-21 2000-10-21 Axial flow motor for concentrating flow with permanent magnet excitation has a stator and a rotor with flow concentration pieces of soft magnetic material and permanent magnets magnetized at a tangent to the direction of movement.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10053400A DE10053400A1 (en) 2000-10-21 2000-10-21 Axial flow motor for concentrating flow with permanent magnet excitation has a stator and a rotor with flow concentration pieces of soft magnetic material and permanent magnets magnetized at a tangent to the direction of movement.

Publications (1)

Publication Number Publication Date
DE10053400A1 true DE10053400A1 (en) 2002-05-02

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Family Applications (1)

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DE10053400A Withdrawn DE10053400A1 (en) 2000-10-21 2000-10-21 Axial flow motor for concentrating flow with permanent magnet excitation has a stator and a rotor with flow concentration pieces of soft magnetic material and permanent magnets magnetized at a tangent to the direction of movement.

Country Status (1)

Country Link
DE (1) DE10053400A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975044B2 (en) * 2002-12-20 2005-12-13 Isao Takahashi Generator
EP1653586A2 (en) 2004-10-29 2006-05-03 Lg Electronics Inc. Motor, method for manufacturing field magnet assembly of the same, and washing machine with the same
DE102012200806A1 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. z.o.o. Wet runner pump with power electronics
WO2013107807A2 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. Z O.O. Wet rotor pump
WO2013107804A2 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. Z O.O. Wet rotor pump comprising a permanent magnet
WO2013107808A2 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. Z O.O. Wet rotor pump comprising a plain bearing

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6975044B2 (en) * 2002-12-20 2005-12-13 Isao Takahashi Generator
EP1653586A2 (en) 2004-10-29 2006-05-03 Lg Electronics Inc. Motor, method for manufacturing field magnet assembly of the same, and washing machine with the same
EP1653586A3 (en) * 2004-10-29 2009-08-12 Lg Electronics Inc. Motor, method for manufacturing field magnet assembly of the same, and washing machine with the same
DE102012200806A1 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. z.o.o. Wet runner pump with power electronics
WO2013107807A2 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. Z O.O. Wet rotor pump
DE102012200803A1 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. z.o.o. Wet rotor
WO2013107804A2 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. Z O.O. Wet rotor pump comprising a permanent magnet
WO2013107808A2 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. Z O.O. Wet rotor pump comprising a plain bearing
WO2013107805A2 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. Z O.O. Wet rotor pump comprising power electronics
DE102012200816A1 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. z.o.o. Wet runner pump with permanent magnet
DE102012200807A1 (en) 2012-01-20 2013-07-25 Yasa Motors Poland Sp. z.o.o. Wet runner pump with slide bearing
DE102012200806B4 (en) * 2012-01-20 2014-07-31 Yasa Motors Poland Sp. z.o.o. Wet runner pump with power electronics
DE102012200807B4 (en) * 2012-01-20 2014-09-25 Yasa Motors Poland Sp. z.o.o. Wet runner pump with slide bearing
DE102012200816B4 (en) * 2012-01-20 2015-04-02 Yasa Motors Poland Sp. z.o.o. Wet runner pump with permanent magnet
DE102012200803B4 (en) * 2012-01-20 2015-04-02 Yasa Motors Poland Sp. z.o.o. Wet rotor

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE

8127 New person/name/address of the applicant

Owner name: DAIMLER AG, 70327 STUTTGART, DE

8141 Disposal/no request for examination