DE102005041352A1 - Permanently excited synchronous machine, has permanent magnets arranged in axially aligned magnet slots of rotor, where two permanent magnets are provided on each pole of rotor in circumferential direction - Google Patents
Permanently excited synchronous machine, has permanent magnets arranged in axially aligned magnet slots of rotor, where two permanent magnets are provided on each pole of rotor in circumferential direction Download PDFInfo
- Publication number
- DE102005041352A1 DE102005041352A1 DE200510041352 DE102005041352A DE102005041352A1 DE 102005041352 A1 DE102005041352 A1 DE 102005041352A1 DE 200510041352 DE200510041352 DE 200510041352 DE 102005041352 A DE102005041352 A DE 102005041352A DE 102005041352 A1 DE102005041352 A1 DE 102005041352A1
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- permanent magnets
- pole
- circumferential direction
- synchronous machine
- 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.)
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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
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
Abstract
Description
Permanenterregte Synchronmaschine mit in Taschen des Läufers angeordneten Permanentmagneten.permanent-magnet Synchronous machine with arranged in pockets of the rotor permanent magnets.
Permanenterregte Synchronmaschinen weisen in ihrem Läufer vergrabene, d.h. im Inneren des Läuferblechpakets befindliche Permanentmagnete oder an der Oberfläche des Läufers angeordnete Permanentmagnete auf. Bei vergrabenen Magneten müssen diese von der Stirnseite axial in das Blechpaket des Läufers in entsprechende Öffnungen bzw. Ausnehmungen oder auch Magnettaschen genannt, eingeschoben werden.permanent-magnet Synchronous machines have buried in their rotor, i. internally of the rotor core located permanent magnets or arranged on the surface of the rotor permanent magnets on. For buried magnets need this from the front side axially in the laminated core of the rotor in corresponding openings or recesses or magnetic pockets called inserted become.
Aus Kostengründen wird nur eine Magnettasche pro Pol vorgesehen, in die üblicherweise quaderförmige Permanentmagnetplatten mit oder ohne Kantenverrundung hintereinander, über die axiale Länge des Läufers gesehen, eingeschoben werden. Das Einbringen der magnetisierten Permanentmagnetplatten in die entsprechenden Taschen des Läufers ist aufwendig, da aufgrund der vergleichsweise großen Abmessungen der Permanentmagnete entsprechende Magnetkräfte auftreten, die u.a. die Handhabung erschweren.Out cost reasons only one magnetic pocket per pole is provided, in the usual cuboid Permanent magnet plates with or without edge rounding in succession, over the axial length of the runner seen, be pushed. The introduction of the magnetized Permanent magnet plates in the corresponding pockets of the rotor is consuming, because due to the relatively large dimensions of the permanent magnets corresponding magnetic forces occur, the u.a. make handling difficult.
Ein weiteres Problem bei der Verwendung von vergleichsweise großen Permanentmagnetplatten sind Wirbelströme, die sich aufgrund der Abmessungen dieser Platten relativ ungestört ausbilden können. Die dadurch entstehenden Wirbelstromverluste führen zu einer unzulässigen Erwärmung der Permanentmagnete und können diese zum Teil entmagnetisieren. Aufgrund dieser Abhängigkeit müssen derartige Läufer verstärkt gekühlt werden.One Another problem with the use of relatively large permanent magnet plates are eddy currents, which can form relatively undisturbed due to the dimensions of these plates. The The resulting eddy current losses lead to an impermissible heating of the permanent magnets and can demagnetize them in part. Because of this dependence have to such runners reinforced chilled become.
Diese Wirbelstromverluste werden bei Verwendung einer Zahnspulenwicklung oder einer Bruchlochwicklung mit großen subharmonischen Drehfeldwellen sogar noch zusätzlich verstärkt.These Eddy current losses occur when using a tooth coil winding or a break hole winding with large subharmonic rotating field waves even more strengthened.
Des Weiteren erschwert die Läuferausführung nur einer Tasche pro Pol, die elektromagnetische und mechanische Läuferauslegung, da diese gegenläufige Anforderungen erfüllen müssen. Aus mechanischer Sicht sollten die Stege über und neben den Permanentmagneten möglichst groß sein, um die dementsprechenden Fliehkräfte aufzunehmen und aus elektromagnetischer Sicht sollten diese Stege möglichst klein sein, um die Streuflüsse der Permanentmagnete zu reduzieren.Of Further complicates the runner execution only one bag per pole, the electromagnetic and mechanical rotor design, because these are contrary meet requirements have to. From a mechanical point of view, the bars should be above and beside the permanent magnets preferably be great around the corresponding centrifugal forces from electromagnetic point of view, these bars should be preferably be small to the leakage fluxes to reduce the permanent magnets.
Ausgehend davon liegt der Erfindung die Aufgabe zugrunde, eine Anordnung von Permanentmagneten in einem Läufer einer permanenterregten Synchronmaschine zu schaffen, die sowohl den oben genannten mechanischen als auch den aufgeführten elektromagnetischen Anforderungen genügt.outgoing It is the object of the invention to provide an arrangement of Permanent magnets in a rotor a permanent magnet synchronous machine to create both the above-mentioned mechanical as well as the listed electromagnetic Requirements are sufficient.
Die Lösung der gestellten Aufgabe gelingt durch eine permanenterregte Synchonmaschine, bei der die Permanentmagnete in axial ausgerichteten Taschen des Läufers positioniert sind und wobei jeder Pol des Läufers in Umfangsrichtung betrachtet zumindest zwei Permanentmagnete pro Pol aufweist.The solution The task is accomplished by a permanent-magnet synchronous machine, in which the permanent magnets in axially aligned pockets of runner are positioned and wherein each pole of the rotor viewed in the circumferential direction, at least has two permanent magnets per pole.
Durch die erfindungsgemäße Anordnung werden nunmehr vergleichsweise kleine Permanentmagnete in die jeweiligen Taschen des Läufers eingesteckt, so dass pro Pol mehrere Magnettaschen vorhanden sind. Die Magnettaschen sind schalenförmig, sekantenartig bzgl. der Umfangsrichtung ausgerichtet, sie können genauso in Flusskonzentrationsanordnung oder in mehrschichtigen Anordnungen pro Pol nebeneinander ausgeführt sein.By the arrangement according to the invention now comparatively small permanent magnets in the respective Bags of the runner plugged in, so that more pole pockets are available per pole. The magnetic pockets are cupped, Seekantenartig respect. The circumferential direction aligned, they can do the same in flux concentration arrangement or in multilayer arrangements executed per pole next to each other be.
Durch die erfindungsgemäße Ausgestaltung des Läufers wird nunmehr die Drehmomentenwelligkeit positiv beeinflusst, d.h. die Welligkeit des abgegebenen Drehmoments reduziert sich gegenüber herkömmlichen Anordnungen. Des Weiteren werden die mechanischen Anforderungen hinsichtlich Fliehkraftbeanspruchung erfüllt. Auch eine Erwärmung der Permanentmagnete und damit des Läufers wird reduziert, da sich in den vergleichs weise kleinen Permanentmagneten wesentlich weniger Wirbelstromverluste ausbilden können.By the embodiment of the invention runner Now, the torque ripple is positively influenced, i. the ripple of the output torque is reduced compared to conventional Arrangements. Furthermore, the mechanical requirements satisfied with respect to centrifugal stress. Also, a warming of Permanent magnets and thus the rotor is reduced because in the comparatively small permanent magnet can form much less eddy current losses.
Die erfindungsgemäße verteilte Anordnung der Permanentmagnete führt zu einer Wabenstruktur und damit zu einer erhöhten mechanischen Festigkeit des Läufers. Damit lassen sich derartige Läufer auch im hochtourigen Bereich, d.h. über 10000 Umdrehungen pro Minute einsetzen.The distributed according to the invention Arrangement of the permanent magnets leads to a honeycomb structure and thus to an increased mechanical strength of the runner. Thus, such runners can also in the high-speed range, i. above Use 10000 revolutions per minute.
Die Erfindung sowie weitere Vorteile der Erfindung gemäß Merkmalen der Unteransprüche werden anhand der folgenden schematisch dargestellten Ausführungsbeispiele näher erläutert. Darin zeigen:The Invention and other advantages of the invention according to features the dependent claims will be described with reference to the following schematically illustrated embodiments explained in more detail. In this demonstrate:
Ebenso
ist es möglich,
dass pro Pol
In
die Magnettaschen
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510041352 DE102005041352A1 (en) | 2005-08-31 | 2005-08-31 | Permanently excited synchronous machine, has permanent magnets arranged in axially aligned magnet slots of rotor, where two permanent magnets are provided on each pole of rotor in circumferential direction |
PCT/EP2006/064930 WO2007025829A1 (en) | 2005-08-31 | 2006-08-02 | Permanently excited synchronous motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510041352 DE102005041352A1 (en) | 2005-08-31 | 2005-08-31 | Permanently excited synchronous machine, has permanent magnets arranged in axially aligned magnet slots of rotor, where two permanent magnets are provided on each pole of rotor in circumferential direction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005041352A1 true DE102005041352A1 (en) | 2007-03-01 |
Family
ID=37312048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510041352 Withdrawn DE102005041352A1 (en) | 2005-08-31 | 2005-08-31 | Permanently excited synchronous machine, has permanent magnets arranged in axially aligned magnet slots of rotor, where two permanent magnets are provided on each pole of rotor in circumferential direction |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102005041352A1 (en) |
WO (1) | WO2007025829A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007028356A1 (en) | 2007-06-15 | 2008-12-18 | Ksb Aktiengesellschaft | Permanently excited rotor for working machines |
WO2024047040A1 (en) * | 2022-08-30 | 2024-03-07 | SVANEHØJ Danmark A/S | An electric motor with permanent magnets and a submerged fuel pump with such motor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1193827A2 (en) * | 2000-09-28 | 2002-04-03 | Nissan Motor Co., Ltd. | Rotor structure for permanent-magnet motor |
EP1253701A2 (en) * | 2001-04-25 | 2002-10-30 | Matsushita Electric Industrial Co., Ltd. | Motor |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3429813A1 (en) * | 1984-08-14 | 1986-02-27 | Landert-Motoren-AG, Bülach, Zürich | Permanent-magnet synchronous motor with asynchronous starting |
JP2002354721A (en) * | 2001-05-29 | 2002-12-06 | Hitachi Ltd | Rotating electric machine comprising permanent magnet rotor |
DE10217977A1 (en) * | 2002-04-23 | 2003-11-27 | Oswald Elektromotoren Gmbh | Rotor e.g. for synchronous machine, has body with several permanent magnets on peripheral surface and covered by holding cover joined to body between permanent magnets in peripheral direction |
EP1450470B1 (en) * | 2003-02-21 | 2012-09-19 | Rexroth Indramat GmbH | Interior permanent magnet synchronous machine |
KR20050069055A (en) * | 2003-12-30 | 2005-07-05 | 현대자동차주식회사 | Rotor structure of multi-layer interior permanent magnet motor |
-
2005
- 2005-08-31 DE DE200510041352 patent/DE102005041352A1/en not_active Withdrawn
-
2006
- 2006-08-02 WO PCT/EP2006/064930 patent/WO2007025829A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1193827A2 (en) * | 2000-09-28 | 2002-04-03 | Nissan Motor Co., Ltd. | Rotor structure for permanent-magnet motor |
EP1253701A2 (en) * | 2001-04-25 | 2002-10-30 | Matsushita Electric Industrial Co., Ltd. | Motor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007028356A1 (en) | 2007-06-15 | 2008-12-18 | Ksb Aktiengesellschaft | Permanently excited rotor for working machines |
WO2024047040A1 (en) * | 2022-08-30 | 2024-03-07 | SVANEHØJ Danmark A/S | An electric motor with permanent magnets and a submerged fuel pump with such motor |
Also Published As
Publication number | Publication date |
---|---|
WO2007025829A1 (en) | 2007-03-08 |
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Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |