DE102012006006A1 - Electrical machine has magnetic yoke and fixed mechanical unit which are provided on one side of air gap with magnetic poles in same direction, and tangentially magnetized permanent magnets are attached to pole edges - Google Patents

Electrical machine has magnetic yoke and fixed mechanical unit which are provided on one side of air gap with magnetic poles in same direction, and tangentially magnetized permanent magnets are attached to pole edges Download PDF

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Publication number
DE102012006006A1
DE102012006006A1 DE201210006006 DE102012006006A DE102012006006A1 DE 102012006006 A1 DE102012006006 A1 DE 102012006006A1 DE 201210006006 DE201210006006 DE 201210006006 DE 102012006006 A DE102012006006 A DE 102012006006A DE 102012006006 A1 DE102012006006 A1 DE 102012006006A1
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Germany
Prior art keywords
permanent magnets
attached
yoke
magnetized permanent
magnetic
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DE201210006006
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German (de)
Inventor
Theresia Heil - Ostovic
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HEIL OSTOVIC THERESIA
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HEIL OSTOVIC THERESIA
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Priority to DE201210006006 priority Critical patent/DE102012006006A1/en
Publication of DE102012006006A1 publication Critical patent/DE102012006006A1/en
Withdrawn legal-status Critical Current

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    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

The electrical machine has a magnetic yoke and a fixed mechanical unit which are provided on one side of the air gap with magnetic poles (2) in the same direction (1). The tangentially magnetized permanent magnets (3,4) are attached to the pole edges. The remaining poles of magnetic material are attached between the tangentially magnetized permanent magnets and are separated from the yoke. The tangentially magnetized permanent magnets are attached between the remaining poles and yoke.

Description

1. EINLEITUNG DER PATENTANMELDUNG1. INTRODUCTION OF THE PATENT APPLICATION

Elektrische Maschinen mit Permanentmagneten finden überall Einsatz, wo elektrische Energie mit hohem Wirkungsgrad in mechanische Energie umgewandelt wird und umgekehrt. Die benutzten Permanentmagnete werden i. d. R. radial magnetisiert, weswegen ihre Montage auf der Rotoroberfläche oder sogar im Rotorblechpaket zu keinen magnetischen Problemen führt.Electric machines with permanent magnets are used everywhere, where electrical energy is converted into mechanical energy with high efficiency and vice versa. The used permanent magnets i. d. R. radially magnetized, so their assembly on the rotor surface or even in the rotor core does not lead to magnetic problems.

Sollte der magnetische Fluss im Luftspalt größer sein, als derjenige, der von einem einzelnen Magneten erzeugt witrd, so wird die s. g. Flusskonzentration benutzt. In dem Fall werden zwei oder mehr Magnete so angeordnet werden, dass ihr gemeinsamer Fluss dem Fluss pro Pol gleich ist. In dem Fall sind manche oder sogar alle Magnete tangential magnetisiert.If the magnetic flux in the air gap is greater than that generated by a single magnet, the s. G. Used flux concentration. In that case, two or more magnets will be arranged so that their common flux equals the flux per pole. In that case, some or even all magnets are tangentially magnetized.

Im Gegensatz zu der radialen Magnetisierung, wo der magnetische Fluss durch das Joch derselbe ist, der auch durch den Luftspalt geht, so geht bei der Flusskonzentration mit tangential magnetisierten Magneten der magnetische Fluss durch das Joch an dem Luftspalt vorbei und erzeugt kein Drehmoment. Aus diesem Grund müssen die Pole einer elektrischen Maschine mit Flusskonzentration/tangential magnetisierten Magneten voneinander getrennt werden. Die getrennten Pole müssen an das Joch mit unmagnetischen Trägern befestigt werden, um die mechanische Funktion des Rotors zu gewährleisten.In contrast to the radial magnetization, where the magnetic flux through the yoke is the same which also passes through the air gap, at flux concentration with tangentially magnetized magnets, the magnetic flux passes through the yoke past the air gap and produces no torque. For this reason, the poles of an electric machine with flux concentration / tangentially magnetized magnets must be separated from each other. The separate poles must be attached to the yoke with non-magnetic supports to ensure the mechanical function of the rotor.

2. BESCHREIBUNG DER PATENTANMELDUNG2. DESCRIPTION OF THE PATENT APPLICATION

Der Rotor einer elektrischen Maschine mit Permanentmagneten nach dem vorgeschlagenen Prinzip hat ein kontinuierliches Joch aus magnetischem Material, an dem jeder zweite Pol vorhanden ist. An beiden Flanken der Rotorpole befinden sich tangential magnetisierte Permanentmagnete. In der Lücke zwischen zwei an das Rotorjoch befestigten Polen befindet sich neben tangential magnetisierten Magneten jeweils noch ein Pol aus magnetischem Material, der mit einem radial magnetisierten Permanentmagnet auf einem Abstand vom Rotorjoch gehalten wird.The rotor of a permanent magnet electric machine according to the proposed principle has a continuous yoke of magnetic material on which every other pole is present. On both flanks of the rotor poles are tangentially magnetized permanent magnets. In the gap between two poles fixed to the rotor yoke, apart from tangentially magnetized magnets, there is in each case still one pole of magnetic material which is held at a distance from the rotor yoke with a radially magnetized permanent magnet.

Die Magnetisierungsrichtung der tangential und radial magnetisierten Magnete wird so gewählt, dass der resultierende Fluss in jedem Rotorpol größer ist als der Fluss der einzelnen Magneten.The magnetization direction of the tangentially and radially magnetized magnets is chosen such that the resulting flux in each rotor pole is greater than the flux of the individual magnets.

3. BESCHREIBUNG DER ABBILDUNG3. DESCRIPTION OF THE FIGURE

stellt den Rotor einer 8- poligen, elektrischen Maschine mit Permanentmagneten nach dem vorgeschlagenen Prinzip dar. Das Rotorjoch und vier magnetisch gleichsinnige Rotorpole 1 bilden die tragende Struktur des Rotors. Die anderen vier, magnetisch gegensinnigen Pole 2 sind mit dem Rotorjoch und den benachbarten Polen über Permanentmagnete 3 und 4 verbunden. Die Permanentmagnete 3 sind tangential und die Permanentmagnete 4 radial magnetisiert. represents the rotor of an 8-pole, electric machine with permanent magnets according to the proposed principle. The rotor yoke and four magnetically identical rotor poles 1 form the bearing structure of the rotor. The other four, magnetically opposite poles 2 are with the rotor yoke and the neighboring poles via permanent magnets 3 and 4 connected. The permanent magnets 3 are tangential and the permanent magnets 4 radially magnetized.

Claims (4)

Eine elektrische Maschine mit Permanentmagneten, dadurch gekennzeichnet, dass das Joch an einer Seite ihres Luftspaltes eine feste mechanische und magnetische Einheit nur mit magnetisch gleichsinnigen Polen aufbaut.An electric machine with permanent magnets, characterized in that the yoke on one side of its air gap builds a solid mechanical and magnetic unit only with magnetically same directional poles. Eine elektrische Maschine mit Permanentmagneten nach Patentanspruch 1, dadurch gekennzeichnet, dass an den Polflanken tangential magnetisierte Permanentmagnete angebracht sind.An electric machine with permanent magnets according to claim 1, characterized in that tangentially magnetized permanent magnets are attached to the pole edges. Eine elektrische Maschine mit Permanentmagneten nach Patentansprüchen 1 und 2, dadurch gekennzeichnet, dass zwischen den tangential magnetisierten Permanentmagneten die restlichen Pole aus magnetischem Material angebracht sind, welche vom Joch getrennt sind.An electric machine with permanent magnets according to claims 1 and 2, characterized in that between the tangentially magnetized permanent magnets, the remaining poles of magnetic material are attached, which are separated from the yoke. Eine elektrische Maschine mit Permanentmagneten nach Patentansprüchen 1, 2 und 3, dadurch gekennzeichnet, dass zwischen den restlichen Polen nach Anspruch 3 und dem Joch radial magnetisierte Permanentmagnete angebracht sind.An electric machine with permanent magnets according to claims 1, 2 and 3, characterized in that between the remaining poles according to claim 3 and the yoke radially magnetized permanent magnets are mounted.
DE201210006006 2012-03-24 2012-03-24 Electrical machine has magnetic yoke and fixed mechanical unit which are provided on one side of air gap with magnetic poles in same direction, and tangentially magnetized permanent magnets are attached to pole edges Withdrawn DE102012006006A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201210006006 DE102012006006A1 (en) 2012-03-24 2012-03-24 Electrical machine has magnetic yoke and fixed mechanical unit which are provided on one side of air gap with magnetic poles in same direction, and tangentially magnetized permanent magnets are attached to pole edges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210006006 DE102012006006A1 (en) 2012-03-24 2012-03-24 Electrical machine has magnetic yoke and fixed mechanical unit which are provided on one side of air gap with magnetic poles in same direction, and tangentially magnetized permanent magnets are attached to pole edges

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DE102012006006A1 true DE102012006006A1 (en) 2013-09-26

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DE201210006006 Withdrawn DE102012006006A1 (en) 2012-03-24 2012-03-24 Electrical machine has magnetic yoke and fixed mechanical unit which are provided on one side of air gap with magnetic poles in same direction, and tangentially magnetized permanent magnets are attached to pole edges

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077026A (en) * 1959-11-12 1963-02-12 Gen Motors Corp Method of making a permanent magnet rotor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077026A (en) * 1959-11-12 1963-02-12 Gen Motors Corp Method of making a permanent magnet rotor

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R012 Request for examination validly filed
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee
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Effective date: 20141001