[go: up one dir, main page]

DE19757502A1 - Electric machine with permanent magnet excitation - Google Patents

Electric machine with permanent magnet excitation

Info

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
Application number
DE19757502A
Other languages
German (de)
Inventor
Vlado Dr Ostovic
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19757502A priority Critical patent/DE19757502A1/en
Publication of DE19757502A1 publication Critical patent/DE19757502A1/en
Priority to US09/517,256 priority patent/US6800977B1/en
Ceased legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • H02K1/272Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753Inner 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
    • H02K1/276Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2786Outer rotors
    • H02K1/2787Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791Surface mounted magnets; Inset magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02Details
    • H02K21/04Windings on magnets for additional excitation ; Windings and magnets for additional excitation
    • H02K21/042Windings 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

The machine includes main excitation magnets (1) which are magnetized tangentially or radial, and which form a yoke of the electric machine along with intermediate iron pieces (2). The yoke can be additionally excited with auxiliary magnets (3) and/or one or several windings. Adjacent main excitation magnets are preferably magnetized in opposite directions.

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)

1. Permanentmagneterregte elektrische Maschine, dadurch gekennzeichnet, daß die Haupterregungsmagnete tangential oder radial magnetisiert sind und zusammen mit den Eisenzwischenstücken das Joch der elektrischen Maschine bauen. Das so gebaute Joch kann zusätzlich mit Hilfsmagneten, bzw. einer oder mehreren Wicklungen erregt werden.1. Permanent magnet excited electrical machine, characterized in that the main excitation magnets are magnetized tangentially or radially and build the yoke of the electrical machine together with the iron intermediate pieces. The yoke constructed in this way can also be excited with auxiliary magnets or one or more windings. 2. Elektrische Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die benachbarten Haupterregungsmagnete in entgegengesetzten Richtungen magnetisiert sind.2. Electrical machine according to claim 1, characterized in that the adjacent main excitation magnets in opposite directions are magnetized. 3. Elektrische Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die Luftspaltinduktion mittels Jochkonstruktion nach Anspruch 1 und 2 unab­ hängig von der Remanenzinduktion der Permanentmagnete gesetzt werden kann.3. Electrical machine according to claim 1, characterized in that the Air gap induction by means of yoke construction according to claim 1 and 2 independent depending on the remanent induction of the permanent magnets can. 4. Elektrische Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die vorhandenen Wicklungen solche Ströme tragen, die die Wirkung von Haupt­ erregungsmagneten beeinflussen, oder die Ankerrückwirkung verändern kön­ nen.4. Electrical machine according to claim 1, characterized in that the existing windings carry such currents that have the effect of main influence excitation magnets, or can change the armature reaction nen.
DE19757502A 1997-12-23 1997-12-23 Electric machine with permanent magnet excitation Ceased DE19757502A1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Title
JP 07336919 A., In: Patent Abstracts of Japan *

Cited By (11)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
DE112013000314B4 (en) Rotating electric machine with hybrid excitation
DE69830452T2 (en) Electric machine with flow switch, in particular power generator for motor vehicles
DE112013000316B4 (en) Rotating electric machine with hybrid excitation
DE1538241A1 (en) Electrodynamic AC or three-phase machine of the type of the claw pole type
EP0729217A3 (en) Hybride excited synchronous machine
EP0729216A3 (en) Hybride excited synchronous machine
DE10219190A1 (en) Permanent magnet rotor for electrical machine, has holding elements and cover plates in form of one-piece injection-molded part of plastic or other non-magnetic, electrically non-conducting material
DE10133654A1 (en) synchronous machine
DE711343C (en) DC machine with permanent magnet excitation
DE1159780T1 (en) MULTIPOLE ELECTRIC MOTOR / GENERATOR WITH AXIAL MAGNETIC FLOW.
DE19780317D2 (en) Electrical machine
DE112013000536T5 (en) Rotating electric machine with hybrid excitation
EP0394528B1 (en) Synchronous machine
DE69921211T2 (en) Electric machine with double excitation, and in particular vehicle generator
DE19757502A1 (en) Electric machine with permanent magnet excitation
DE1927795A1 (en) Dynamo-electric machine with a permanent magnetic stator
DE1121716B (en) AC or three-phase generator with claw pole bank
DE948715C (en) Electric synchronous machine with alternating poles
DE3037724C2 (en) DC motor
DE10203508A1 (en) Generator for motor vehicle, has a two-part rotor with permanent magnets and a rotating or stationary exciter coil.
DE3335626A1 (en) Single-phase or multiple-phase AC machine which is energised in a homopolar manner
DE2545303A1 (en) Brushless AC generator with stationary windings - has optimised excitation circuit flux path and low iron content in carrier ring
DE1438536A1 (en) Excitation part of electric claw pole machines
DE8905353U1 (en) Synchronous machine
DE50446C (en) Dynamo-electric machine

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