BE898244A - Electric machine using disc and permanent magnet excitation - has disc rotor carrying high coercivity permanent magnets and uses armature windings, set in epoxy, facing magnets - Google Patents
Electric machine using disc and permanent magnet excitation - has disc rotor carrying high coercivity permanent magnets and uses armature windings, set in epoxy, facing magnets Download PDFInfo
- Publication number
- BE898244A BE898244A BE0/211886A BE211886A BE898244A BE 898244 A BE898244 A BE 898244A BE 0/211886 A BE0/211886 A BE 0/211886A BE 211886 A BE211886 A BE 211886A BE 898244 A BE898244 A BE 898244A
- Authority
- BE
- Belgium
- Prior art keywords
- disc
- magnets
- permanent magnet
- epoxy
- armature
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The machine can function either as a generator or a motor, and uses permanent magnet excitation with a wound armature in a disc configuration. The permanent magnet material permits high flux density (0.2-0.5 Tesla) with air gaps of 0.5-3 cm, thus permitting the use of armature windings set in epoxy rather than in a laminated iron stack. - The machine is constructed in disc format with the rotor mounted on a shaft which runs in bearings carried in the stator frame. The rotor may carry either the field or the armature, and the stator either armature or field. No brushes are needed if the field is carried on the rotor.(0/3)
Description
W EN KIN Michel - MUS André, invention, générateur ou moteur électrique en forme de disque, à induit bobiné, sans fer et à inducteur garni d'aimants permanents.
<EMI ID=1.1>
B : induction magnétique.
H : force de champ magnétique.
Les nouveaux aimants du type Ferroxdure et RES permettent d'obtenir dans de longs entrefers de l'ordre du centimètre et sans réduction de la section polaire, une induction magnétique intense de l'ordre de 0,2 Tesla pour les aimants du type Ferroxdure et de 0,5 Tesla pour les nouveaux aimants du type RES (valeurs prises au voisinage du produit B. H maximum sur la courbe de démagnétisation de ces deux types d'aimants).
IL est donc possible de loger dans ces grands entrefers un grand nombre de spires permettant d'obtenir n'importe quelle tension de service sans utilisation de tôles empilées, la réluctance du circuit pouvant être très grande (grâce au grand champ coercitif des aimants).
De manière à simplifier la géométrie de la machine, elle est constituée comme suit :
A) Inducteur fixe ou tournant, en forme de deux disques, en matériau magnétique doux, dont l'épaisseur est appropriée au flux à transmettre et sur lesquels sont fixés les aimants de forme adaptée à la forme de la tension à obtenir.
Des aimants de forme rectangulaire semblent donner de bons résultats pour l'obtention d'une tension sinusoïdale (voir figure 1).
Pour la production en grandes séries, il y a probablement avantage à utiliser des aimants de forme annulaire multipolaire.
B) Induit fixe ou tournant, constitué d'un disque en matériau synthétique isolant dans lequel sont immergées les bobines disposées radialement et de forme adaptée au type de bobinage à obtenir (alternateur, dynamo, moteur, etc...).
L'INDUIT NE CONTIENT PAS DE TOLES EMPILEES.
Exemple de réalisation : alternateur. (Voir figure 2).
C) Assemblage des différentes parties. (Voir figure 3).
NB : Les côtes données sur les dessins sont un exemple de dimensionnement pour une
machine 1 KW.
ABREGE DESCRIPTIF DE L'INVENTION.
IL s'agit d'un générateur ou moteur électrique tournant, basé sur le principe de l'entrefer axial et ayant les originalités suivantes :
* Induit fixe (donc sans balais) ou tournant bobiné, sans fer, tournant dans un très long entrefer (5mm à 3 cm).
* Inducteur tournant ou fixe garni d'aimants permanents de type Ferroxdure, Res et autres.
W EN KIN Michel - MUS André, invention, disc-shaped electric generator or motor, with armature armature, without iron and with inductor filled with permanent magnets.
<EMI ID = 1.1>
B: magnetic induction.
H: magnetic field strength.
The new magnets of the Ferroxdure and RES type make it possible to obtain, in long air gaps of the order of a centimeter and without reduction of the polar section, an intense magnetic induction of the order of 0.2 Tesla for magnets of the Ferroxdure type and 0.5 Tesla for new magnets of the RES type (values taken in the vicinity of product B. H maximum on the demagnetization curve of these two types of magnets).
It is therefore possible to accommodate in these large air gaps a large number of turns making it possible to obtain any operating voltage without the use of stacked sheets, the reluctance of the circuit being able to be very large (thanks to the large coercive field of the magnets).
In order to simplify the geometry of the machine, it is made up as follows:
A) Fixed or rotating inductor, in the form of two discs, made of soft magnetic material, the thickness of which is appropriate for the flux to be transmitted and on which the magnets are fixed with a shape adapted to the shape of the voltage to be obtained.
Magnets of rectangular shape seem to give good results for obtaining a sinusoidal tension (see figure 1).
For mass production, it is probably advantageous to use multi-pole ring-shaped magnets.
B) Fixed or rotating armature, consisting of a disc of insulating synthetic material in which the radially arranged coils are immersed and of a shape adapted to the type of winding to be obtained (alternator, dynamo, motor, etc.).
THE ARMATURE DOES NOT CONTAIN STACKED SHEETS.
Example of implementation: alternator. (See figure 2).
C) Assembly of the different parts. (See figure 3).
NB: The dimensions given on the drawings are an example of sizing for a
1 KW machine.
ABSTRACT DESCRIPTION OF THE INVENTION.
It is a generator or rotating electric motor, based on the principle of the axial air gap and having the following original features:
* Fixed armature (therefore without brushes) or wound coil, without iron, rotating in a very long air gap (5mm to 3 cm).
* Rotating or fixed inductor filled with permanent magnets such as Ferroxdure, Res and others.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE0/211886A BE898244A (en) | 1983-11-17 | 1983-11-17 | Electric machine using disc and permanent magnet excitation - has disc rotor carrying high coercivity permanent magnets and uses armature windings, set in epoxy, facing magnets |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE898244 | 1983-11-17 | ||
BE0/211886A BE898244A (en) | 1983-11-17 | 1983-11-17 | Electric machine using disc and permanent magnet excitation - has disc rotor carrying high coercivity permanent magnets and uses armature windings, set in epoxy, facing magnets |
Publications (1)
Publication Number | Publication Date |
---|---|
BE898244A true BE898244A (en) | 1984-03-16 |
Family
ID=25653812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE0/211886A BE898244A (en) | 1983-11-17 | 1983-11-17 | Electric machine using disc and permanent magnet excitation - has disc rotor carrying high coercivity permanent magnets and uses armature windings, set in epoxy, facing magnets |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE898244A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7868594B2 (en) * | 2005-01-07 | 2011-01-11 | Siemens Aktiengesellschaft | Generating unit and method for producing a current with a predetermined network frequency |
-
1983
- 1983-11-17 BE BE0/211886A patent/BE898244A/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7868594B2 (en) * | 2005-01-07 | 2011-01-11 | Siemens Aktiengesellschaft | Generating unit and method for producing a current with a predetermined network frequency |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: S.A. EMEGA Effective date: 20001130 |