DE19757502A1 - Electric machine with permanent magnet excitation - Google Patents
Electric machine with permanent magnet excitationInfo
- Publication number
- DE19757502A1 DE19757502A1 DE19757502A DE19757502A DE19757502A1 DE 19757502 A1 DE19757502 A1 DE 19757502A1 DE 19757502 A DE19757502 A DE 19757502A DE 19757502 A DE19757502 A DE 19757502A DE 19757502 A1 DE19757502 A1 DE 19757502A1
- Authority
- DE
- Germany
- Prior art keywords
- magnets
- electrical machine
- yoke
- magnetized
- permanent magnet
- 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
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
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
-
- 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
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset magnets
-
- 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
- H02K21/02—Details
- H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
- H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of Claim 1.
Aufgabe dieser Erfindung ist es, die Möglichkeit zu schaffen, den Luftspalt induktionsverlauf in einer permanentmagneterregten elektrischen Maschine unter Last dem Luftspaltinduktionsverlauf im Leerlauf nahe zu halten. Diese Aufgabe wird durch Läufersonderkonstruktionen wie in Fig. 1, 2 und 3 gelöst.The object of this invention is to create the possibility of keeping the air gap induction profile in a permanent magnet-excited electrical machine under load close to the air gap induction profile when idling. This task is solved by special rotor constructions as in FIGS . 1, 2 and 3.
Die Permanentmagnete der Haupterregung (1) in Fig. 1 sind tangential mag netisiert, und voneinander mit magnetisch gut leitendem Material (2) ge trennt. Die Hilfsmagnete (3) in Fig. 1 sind tangential magnetisiert.The permanent magnets of the main excitation ( 1 ) in Fig. 1 are tangentially mag netiert, and separated from each other with magnetically good conductive material ( 2 ). The auxiliary magnets ( 3 ) in Fig. 1 are magnetized tangentially.
Da benachbarte Magnete der Haupterregung entgegengesetzt zueinander magnetisiert sind, ändert der magnetische Fluß im magnetischen Material (2) seine Richtung von tangentialer in die radiale, als radialer Fluß durch den Luftspalt weiter geht und in den Ständer ein tritt. Die radiale Dicke des Rings in Fig. 1 im Verhältnis zu dem tangentialen Abstand zwischen zwei benach barten Magneten der Haupterregung bestimmt, ob die Luftspaltinduktion kleiner, gleich, oder größer als die Remanenzinduktion von den Permanent magneten wird.Since adjacent magnets of the main excitation are magnetized opposite to each other, the magnetic flux in the magnetic material ( 2 ) changes its direction from tangential to radial, as the radial flux continues through the air gap and enters the stator. The radial thickness of the ring in Fig. 1 in relation to the tangential distance between two neighboring magnets of the main excitation determines whether the air gap induction is smaller, equal, or greater than the remanent induction of the permanent magnet.
Die Permanentmagnete der Haupterregung (1) in Fig. 2 sind tangential mag netisiert, und voneinander mit magnetisch gut leitendem Material (2) ge trennt. Die Wicklung (3) in Fig. 2 trägt einen Strom, dessen Wert dem Ankerstrom proportional ist, und dessen Richtung der Ankerstromrichtung entgegengesetzt ist. Wenn die permanentmagneterregte Maschine nach Fig. 2 belastet ist, fließt der Laststrom nicht nur durch die Ankerwirkung, sondern auch durch die Wicklung (3). So bleibt das resultierende vom Ankerstrom erzeugte Luftspalt-feld unter Last gleich Null.The permanent magnets of the main excitation ( 1 ) in FIG. 2 are magnetized tangentially, and separated from one another with magnetically highly conductive material ( 2 ). The winding ( 3 ) in FIG. 2 carries a current whose value is proportional to the armature current and whose direction is opposite to the armature current direction. If the permanent magnet excited machine according to Fig. 2 is loaded, the load current flows not only through the armature effect, but also through the winding ( 3 ). The resulting air gap field generated by the armature current remains zero under load.
Die Permanentmagnete der Haupterregung (1) in Fig. 3 sind radial magnetisi ert, und liegen im Luftspalt. Die Hilfsmagnete (3) in Figur (3) sind tangential magnetisiert. Die Wicklung (4) trägt einen Strom, der die Wirkung der Hauptmagnete (1), oder der Hilfsmagnete beeinflußt. The permanent magnets of the main excitation ( 1 ) in Fig. 3 are radially magnetisi, and are in the air gap. The auxiliary magnets ( 3 ) in Figure ( 3 ) are magnetized tangentially. The winding ( 4 ) carries a current which influences the action of the main magnets ( 1 ) or the auxiliary magnets.
Das vorgeschlagene Patent kann für elektrische Maschinen mit innerem Läufer, als auch mit äußerem Läufer verwendet werden. Die Permanentmag nete können entweder im Joch, oder im Luftspalt heruntergebracht werden. Die Ankerwicklung einer solchen Maschine ist eine übliche Drehstrom-, oder Wechselstromwicklung. Die Erregung einer solchen Maschine ist mit Permanentmagneten ausgeführt, welche an die Zwischenstücke (2) aus gutem magnetischen Material befestigt sind. Die benachbarten Permanent magnete sind in entgegengesetzten Richtungen tangential oder radial magne tisiert.The proposed patent can be used for electrical machines with an inner rotor as well as with an outer rotor. The permanent magnets can either be brought down in the yoke or in the air gap. The armature winding of such a machine is a conventional three-phase or alternating current winding. The excitation of such a machine is carried out with permanent magnets which are attached to the intermediate pieces ( 2 ) made of good magnetic material. The adjacent permanent magnets are magnetized in opposite directions tangentially or radially.
Durch die Belastung einer in Fig. 1, 2 oder 3 beschriebenen Maschine wird eine zusätzliche Komponente des Luftspaltfeldes vom Ankerstrom erzeugt. Diese kann mit Hilfsmagneten, wie in Fig. 1 und 3, oder mit einer anker stromdurchflossenen Wicklung (Fig. 2) minimiert werden. Die Wirkung der Hauptmagnete kann mit einer zusätzlichen Wicklung, wie in Fig. 3, beein flußt werden.By loading a machine described in FIG. 1, 2 or 3, an additional component of the air gap field is generated by the armature current. This can be minimized with auxiliary magnets, as in FIGS . 1 and 3, or with an armature winding through which current flows ( FIG. 2). The effect of the main magnets can be influenced with an additional winding, as in Fig. 3.
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757502A DE19757502A1 (en) | 1997-12-23 | 1997-12-23 | Electric machine with permanent magnet excitation |
US09/517,256 US6800977B1 (en) | 1997-12-23 | 2000-03-02 | Field control in permanent magnet machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757502A DE19757502A1 (en) | 1997-12-23 | 1997-12-23 | Electric machine with permanent magnet excitation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19757502A1 true DE19757502A1 (en) | 1999-06-24 |
Family
ID=7853159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19757502A Ceased DE19757502A1 (en) | 1997-12-23 | 1997-12-23 | Electric machine with permanent magnet excitation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19757502A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19946648A1 (en) * | 1999-09-29 | 2001-04-05 | Vlado Ostovic | Pole switched, permanent magnet stimulated electric machine has stator with conventional three-phase or alternating current coil and rotor with unmagnetisable magnets per pole |
EP1289097A2 (en) * | 2001-08-30 | 2003-03-05 | Yukio Kinoshita | Electric machine with toroidal coils |
US6800977B1 (en) * | 1997-12-23 | 2004-10-05 | Ford Global Technologies, Llc. | Field control in permanent magnet machine |
WO2011045467A3 (en) * | 2009-10-14 | 2011-09-22 | Wärtsilä Finland Oy | A rotor of an electrical machine |
EP2466733A3 (en) * | 2010-12-17 | 2016-12-21 | Samsung Electronics Co., Ltd. | Synchronous motor |
CN106300728A (en) * | 2015-05-29 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet machine rotor and permagnetic synchronous motor |
WO2017058129A1 (en) | 2015-09-29 | 2017-04-06 | Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi | An electromotor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4405873A (en) * | 1981-10-26 | 1983-09-20 | General Electric Company | Rotor for a line-start permanent-magnet motor |
DE3516380A1 (en) * | 1984-05-08 | 1985-11-14 | DSO "Elprom", Sofia/Sofija | ROTOR FOR AN ELECTRICAL MACHINE |
EP0391791A1 (en) * | 1989-04-04 | 1990-10-10 | Louis Banon | Multi-phase synchronous machine with permanent magnets |
-
1997
- 1997-12-23 DE DE19757502A patent/DE19757502A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4405873A (en) * | 1981-10-26 | 1983-09-20 | General Electric Company | Rotor for a line-start permanent-magnet motor |
DE3516380A1 (en) * | 1984-05-08 | 1985-11-14 | DSO "Elprom", Sofia/Sofija | ROTOR FOR AN ELECTRICAL MACHINE |
US4658167A (en) * | 1984-05-08 | 1987-04-14 | Dso "Elprom" | Rotor with permanent magnets for an electrical machine |
EP0391791A1 (en) * | 1989-04-04 | 1990-10-10 | Louis Banon | Multi-phase synchronous machine with permanent magnets |
Non-Patent Citations (1)
Title |
---|
JP 07336919 A., In: Patent Abstracts of Japan * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6800977B1 (en) * | 1997-12-23 | 2004-10-05 | Ford Global Technologies, Llc. | Field control in permanent magnet machine |
DE19946648A1 (en) * | 1999-09-29 | 2001-04-05 | Vlado Ostovic | Pole switched, permanent magnet stimulated electric machine has stator with conventional three-phase or alternating current coil and rotor with unmagnetisable magnets per pole |
EP1289097A2 (en) * | 2001-08-30 | 2003-03-05 | Yukio Kinoshita | Electric machine with toroidal coils |
EP1289097A3 (en) * | 2001-08-30 | 2003-05-21 | Yukio Kinoshita | Electric machine with toroidal coils |
WO2011045467A3 (en) * | 2009-10-14 | 2011-09-22 | Wärtsilä Finland Oy | A rotor of an electrical machine |
CN102549886A (en) * | 2009-10-14 | 2012-07-04 | 瓦锡兰芬兰有限公司 | A rotor of an electrical machine |
EP2489112A2 (en) * | 2009-10-14 | 2012-08-22 | Wärtsilä Finland Oy | A rotor of an electric machine |
EP2466733A3 (en) * | 2010-12-17 | 2016-12-21 | Samsung Electronics Co., Ltd. | Synchronous motor |
CN106300728A (en) * | 2015-05-29 | 2017-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet machine rotor and permagnetic synchronous motor |
US20180097412A1 (en) * | 2015-05-29 | 2018-04-05 | Gree Green Refrigeration Technology Center Co., Ltd Of Zhuhai | Permanent magnet motor rotor and permanent magnet synchronous motor |
WO2017058129A1 (en) | 2015-09-29 | 2017-04-06 | Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi | An electromotor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
8139 | Disposal/non-payment of the annual fee | ||
8170 | Reinstatement of the former position | ||
8131 | Rejection |