EP2987224A2 - Electric motor with redundant electric circuits - Google Patents

Electric motor with redundant electric circuits

Info

Publication number
EP2987224A2
EP2987224A2 EP14719695.0A EP14719695A EP2987224A2 EP 2987224 A2 EP2987224 A2 EP 2987224A2 EP 14719695 A EP14719695 A EP 14719695A EP 2987224 A2 EP2987224 A2 EP 2987224A2
Authority
EP
European Patent Office
Prior art keywords
poles
stator
pairs
coils
electrical circuits
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.)
Withdrawn
Application number
EP14719695.0A
Other languages
German (de)
French (fr)
Inventor
Jérôme Piaton
Philippe Elie
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.)
Safran Electronics and Defense SAS
Original Assignee
Sagem Defense Securite SA
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 Sagem Defense Securite SA filed Critical Sagem Defense Securite SA
Publication of EP2987224A2 publication Critical patent/EP2987224A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/22—Multiple windings; Windings for more than three phases
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/06—Machines characterised by the presence of fail safe, back up, redundant or other similar emergency arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof

Definitions

  • the present invention relates to an electric motor, in particular a single-phase motor.
  • These single-phase motors are for example used to move flight surfaces in an aircraft with electric flight controls.
  • Such an electric motor comprises a stator defining a number, at least two, of pairs of poles and a rotor mounted to pivot in the stator.
  • the motor comprises an electrical circuit defining identical bobi ⁇ ns mounted on the poles of the stator to form the phases of the motor.
  • the engine can be arranged to have a limited travel. The desired motor travel determines the number of pole pairs: if a pair of poles is sufficient for 180 ° of maximum travel, two pairs of poles are required for a maximum travel of 90 ° and three pairs of poles for a maximum clearance of ⁇ 60 °.
  • an actuator having two or three motors having a common output shaft. Three stators are then mounted along the shaft, each facing a section of the shaft which is arranged to form a rotor.
  • This solution is less cumbersome and less cumbersome while meeting the same security requirements as the previous solution.
  • the object of the invention is to provide a motor having the same safety in case of failure while being even less heavy and less cumbersome.
  • an electric motor comprising a stator defining a number N, at least equal to two pairs of poles and a rotor mounted to pivot in the stator.
  • the motor comprises a number n of electrical circuits each defining two coils mounted on stator poles and the coils of all the circuits are substantially identical to each other.
  • the number n of electrical circuits is greater than the number N of pairs of poles.
  • At least a first and a second of the electrical circuits are mounted on a first of the pairs of poles and a third of the electrical circuits is mounted on a second pair of poles.
  • the motor of the invention comprises several electrical circuits for controlling the motor so that the failure of one of the circuits does not prevent the operation of the motor.
  • the arrangement of the motor thus makes it possible to have a redundancy of the electrical circuits even for motors having a relatively small number of poles. This is particularly interesting for limited travel motors.
  • the coils of each of the first and second electrical circuits are mounted on different poles of the first pair of poles.
  • the coils of each of the first and second me electrical circuits are mounted on the same pole of the first pair of poles.
  • This embodiment is simpler than the first. On the other hand, if the first or the second electrical circuit fails, it will only be possible to supply the motor with half the maximum torque that the motor is capable of supplying when the two electrical circuits are operational.
  • each pole is formed of a tooth having an enlarged free end.
  • stator is formed of angular sectors each having one pole and are you seem ⁇ each other
  • the winding can then be performed on each sector before joining the sectors to each other, which simplifies the manufacture of the stator.
  • the number N of pairs of poles is equal to two and the stator has a cross section having an outer contour of square shape.
  • the square shape is advantageous because it leaves a relatively large space for the coils.
  • FIG. 1 is a schematic half-view in perspective of an engine according to a first embodiment of the invention
  • - Figure 2 is a schematic sectional view along the plane II of Figure 1, the engine according to the first embodiment;
  • - Figure 3 is a schematic cross-sectional view of a stator according to an alternative embodiment;
  • Figure 4 is a view similar to Figure 2 of a motor according to a second embodiment of the invention.
  • the invention is here described in connection with a single-phase electric motor having a limited travel for example at 70 °.
  • the electric motor comprises a stator 1 and a rotor 2 mounted for pivoting in the stator 1 around an axis A.
  • the rotor 2 is known per se and, as the invention relates to not on this one, it will not be described in more detail later.
  • the stator 1 has two pairs of teeth 3 symmetrically opposite each other to define two pairs of poles.
  • the teeth 3 of one pair extend at 90 ° with respect to the teeth 3 of the other pair.
  • Each tooth has an enlarged free end extending in an arc around a portion of the rotor 1.
  • the body of the stator 1 comprises, in a manner known per se, sheets which are contiguous with each other along the axis A.
  • the body of the stator 1 here has a cross section with the axis A having an outer contour of square shape. .
  • the body of the stator 1 is formed of angular sectors which each comprise one of the teeth 3 and which are assembled to each other by a straight tail assembly.
  • the pitch of the tails will preferably be of the order of one to two sheets.
  • the straight tails assembly increases the overlap surface and makes the engine less susceptible to spurious air gaps.
  • the engine having three electrical circuits, generally designated 10, each defining two booster 11, 12 in series (the electrical circuits, and their coils, are differentiated from each other by the numbers 1, 2 and 3 which follow the reference 10, 11, 12 respectively).
  • the coils 11, 12 each surround one of the teeth 3 and are substantially identical to each other.
  • a first and a second of the electrical circuits 10, respectively referenced 10.1, 10.2, are mounted on one of the two pairs of teeth 3 and a third of the electrical circuits, referenced 10.3 is mounted on the other pair of teeth 3.
  • the coils 11 and 12 of each of the first and second electrical circuits 10.1, 10.2 are thus mounted on different poles of the first pair of poles.
  • the coil 11.3 and the coil 12.3 of the third electrical circuit 10.3 each surround one of the teeth 3 of the other pair of teeth 3.
  • the coils are wound around the teeth 3 before joining the sectors to form the stator 1.
  • the coils are each formed of an electrically conductive wire surrounded by an insulator and the coils of the same tooth are separated from one another. the other by insulation and separated from the stator also by an insulator.
  • the insulation may be formed of an annular support having a C-shaped cross section defining a peripheral housing receiving the coil.
  • the coils 11, 12 have portions extending axially from the body of the stator 1.
  • the said protruding portions are covered by a cap 15 (only two of which are visible in Figure 1).
  • the Hats 15, made of magnetic material, are arranged in order to channel the leakage flow. This facilitates the filtering of the high frequency currents generated by the switching control of the motor and isolating the coils from each other vis-à-vis these high frequency currents.
  • stator 1 is in two parts, namely a tubular inner body 1.1 having teeth 3 projecting outwardly and a tubular yoke 1.2 surrounding the tubular inner body 1.1.
  • the motor of Figure 5 is identical to that of the first embodiment except that the coils 11, 12 of each of the first and second electrical circuits 10.1, 10.2 are mounted on the same pole of the first pair of poles.
  • the coils 11.1, 12.1 of the first electrical circuit 10. Surround one of the teeth 3 of one of the two pairs of teeth and the coils 11.2, 12.2 of the second electrical circuit 10.2 surround the other of the teeth 3 of this same pair. of teeth 3.
  • the coil 11.3 and the coil 12.3 of the third electrical circuit 10.3 each surround one of the teeth 3 of the other pair of teeth 3.
  • the number n of electrical circuits and the number N of pairs of poles can be different from three and two.
  • the engine may not include hats.
  • the stator may comprise portions of Vietnamese ⁇ range extending between adjacent coils of teeth.
  • the stator may have other shapes, for example a circular outer shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

An electric motor comprising a stator (1) defining a number N, at least equal to two, of pairs of poles and a rotor (2) mounted to pivot in the stator, the motor comprising a number n of electric circuits (10) each defining two windings (11, 12) mounted on poles of the stator, the windings of all the circuits being substantially identical to each other, the number n of electric circuits being greater than the number N of pairs of poles and at least first and second electric circuits (10.1, 10.2) being mounted on a first of the pairs of poles and a third of the electric circuits (10.3) being mounted on a second of the pairs of poles.

Description

MOTEUR ELECTRIQUE A CIRCUITS ELECTRIQUES  ELECTRIC MOTOR WITH ELECTRIC CIRCUITS
REDONDANTS  REDUNDANT
La présente invention concerne un moteur électrique, en particulier un moteur monophasé.  The present invention relates to an electric motor, in particular a single-phase motor.
Ces moteurs monophasés sont par exemple utilisés pour déplacer des surfaces de vol dans un aéronef à commandes de vol électriques.  These single-phase motors are for example used to move flight surfaces in an aircraft with electric flight controls.
Un tel moteur électrique comprend un stator définissant un nombre, au moins égal à deux, de paires de pô- les et un rotor monté pour pivoter dans le stator. Le moteur comporte un circuit électrique définissant des bobi¬ nes identiques montées sur les pôles du stator pour former les phases du moteur. Le moteur peut être agencé pour avoir un débattement limité. Le débattement souhaité du moteur conditionne le nombre de paires de pôles : si une paire de pôles suffit pour 180° de débattement maximal, il faut deux paires de pôles pour un débattement maximal de 90° et trois paires de pôles pour un débattement maxi¬ mal de 60 ° . Such an electric motor comprises a stator defining a number, at least two, of pairs of poles and a rotor mounted to pivot in the stator. The motor comprises an electrical circuit defining identical bobi ¬ ns mounted on the poles of the stator to form the phases of the motor. The engine can be arranged to have a limited travel. The desired motor travel determines the number of pole pairs: if a pair of poles is sufficient for 180 ° of maximum travel, two pairs of poles are required for a maximum travel of 90 ° and three pairs of poles for a maximum clearance of ¬ 60 °.
Pour des raisons de sécurité, notamment dans les applications aéronautiques, il est connu de relier à une même surface de vol au moins deux moteurs pourvus de leurs moyens de transmission de mouvement, les deux moteurs étant dimensionnés pour pouvoir chacun déplacer seul la surface de vol. Ainsi, en cas de défaillance d'un des moteurs, l'autre moteur peut déplacer la surface de vol. Cette solution est cependant relativement lourde et encombrante .  For reasons of safety, particularly in aeronautical applications, it is known to connect to the same flight surface at least two engines provided with their motion transmission means, the two engines being sized to be able to each move alone the flight area . Thus, in case of failure of one of the engines, the other engine can move the flight area. This solution is however relatively heavy and bulky.
Il a également été envisagé un actionneur ayant deux voire trois moteurs ayant un arbre de sortie commun. Trois stators sont alors montés le long de l'arbre, chacun en regard d'un tronçon de l'arbre qui est agencé pour former un rotor. Cette solution est moins lourde et moins encombrante tout en satisfaisant aux mêmes exigences de sécurité que la solution précédente. L' invention a pour but de fournir un moteur présentant la même sécurité en cas de défaillance tout en étant encore moins lourd et moins encombrant. It has also been envisaged an actuator having two or three motors having a common output shaft. Three stators are then mounted along the shaft, each facing a section of the shaft which is arranged to form a rotor. This solution is less cumbersome and less cumbersome while meeting the same security requirements as the previous solution. The object of the invention is to provide a motor having the same safety in case of failure while being even less heavy and less cumbersome.
A cet effet, on prévoit, selon l'invention un moteur électrique comprenant un stator définissant un nombre N, au moins égal à deux, de paires de pôles et un rotor monté pour pivoter dans le stator. Le moteur comporte un nombre n de circuits électriques définissant chacun deux bobines montées sur des pôles du stator et les bobines de tous les circuits sont sensiblement identiques les unes aux autres. Le nombre n de circuits électriques est supérieur au nombre N de paires de pôles. Au moins un premier et un deuxième des circuits électriques sont montés sur une première des paires de pôles et un troisième des circuits électriques est monté sur une deuxième des paires de pôles.  For this purpose, it is provided, according to the invention, an electric motor comprising a stator defining a number N, at least equal to two pairs of poles and a rotor mounted to pivot in the stator. The motor comprises a number n of electrical circuits each defining two coils mounted on stator poles and the coils of all the circuits are substantially identical to each other. The number n of electrical circuits is greater than the number N of pairs of poles. At least a first and a second of the electrical circuits are mounted on a first of the pairs of poles and a third of the electrical circuits is mounted on a second pair of poles.
Ainsi, le moteur de l'invention comporte plusieurs circuits électriques permettant le pilotage du moteur de sorte que la défaillance d'un des circuits n'empêche pas le fonctionnement du moteur. L'agencement du moteur permet donc d'avoir une redondance des circuits électriques même pour des moteurs comportant un nombre de pôles relativement faible. Ceci est particulièrement intéressant pour les moteurs à débattement limité.  Thus, the motor of the invention comprises several electrical circuits for controlling the motor so that the failure of one of the circuits does not prevent the operation of the motor. The arrangement of the motor thus makes it possible to have a redundancy of the electrical circuits even for motors having a relatively small number of poles. This is particularly interesting for limited travel motors.
Selon un premier mode de réalisation de l'invention, les bobines de chacun des premier et deuxième circuits électriques sont montées sur des pôles différents de la première paire de pôles.  According to a first embodiment of the invention, the coils of each of the first and second electrical circuits are mounted on different poles of the first pair of poles.
Ainsi, si le premier ou le deuxième circuit électrique tombe en panne, il sera quand même possible de faire fournir au moteur le même couple sous réserve d'augmenter le courant d'alimentation du circuit électrique restant.  Thus, if the first or the second electrical circuit fails, it will still be possible to provide the motor the same torque subject to increase the supply current of the remaining electrical circuit.
Selon un deuxième mode de réalisation de l' invention, les bobines de chacun des premier et deuxiè- me circuits électriques sont montées sur un même pôle de la première paire de pôles. According to a second embodiment of the invention, the coils of each of the first and second me electrical circuits are mounted on the same pole of the first pair of poles.
Ce mode de réalisation est plus simple que le premier. En revanche, si le premier ou le deuxième circuit électrique tombe en panne, il ne sera possible de faire fournir au moteur que la moitié du couple maximal que le moteur est capable de fournir quand les deux circuits électriques sont opérationnels.  This embodiment is simpler than the first. On the other hand, if the first or the second electrical circuit fails, it will only be possible to supply the motor with half the maximum torque that the motor is capable of supplying when the two electrical circuits are operational.
Selon un mode de réalisation avantageux du stator :  According to an advantageous embodiment of the stator:
- chaque pôle est formé d'une dent ayant une extrémité libre élargie.  each pole is formed of a tooth having an enlarged free end.
- le stator est formé de secteurs angulaires qui comportent chacun un des pôles et qui sont as¬ semblés les uns aux autres - the stator is formed of angular sectors each having one pole and are you seem ¬ each other
Le bobinage peut alors être réalisé sur chaque secteur avant l'assemblage des secteurs les uns aux autres, ce qui simplifie la fabrication du stator.  The winding can then be performed on each sector before joining the sectors to each other, which simplifies the manufacture of the stator.
De préférence alors, le nombre N de paires de pôles est égal à deux et le stator a une section transversale ayant un contour externe de forme carrée.  Preferably then, the number N of pairs of poles is equal to two and the stator has a cross section having an outer contour of square shape.
La forme carrée est avantageuse car elle laisse un espace relativement important pour les bobines.  The square shape is advantageous because it leaves a relatively large space for the coils.
D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit de modes de réalisation particuliers non limitatifs de l'invention.  Other features and advantages of the invention will emerge on reading the following description of particular non-limiting embodiments of the invention.
Il sera fait référence aux dessins annexés, parmi lesquels :  Reference will be made to the appended drawings, among which:
- la figure 1 est une demi-vue schématique en perspective d'un moteur selon un premier mode de réalisation de l'invention ;  - Figure 1 is a schematic half-view in perspective of an engine according to a first embodiment of the invention;
- la figure 2 est une vue schématique, en coupe selon le plan II de la figure 1, du moteur selon le premier mode de réalisation ; - la figure 3 est une vue schématique en coupe transversale d'un stator selon une variante de réalisation ; - Figure 2 is a schematic sectional view along the plane II of Figure 1, the engine according to the first embodiment; - Figure 3 is a schematic cross-sectional view of a stator according to an alternative embodiment;
- la figure 4 est une vue analogue à la figure 2 d'un moteur selon un deuxième mode de réalisation de l'invention.  - Figure 4 is a view similar to Figure 2 of a motor according to a second embodiment of the invention.
L' invention est ici décrite en relation avec un moteur électrique monophasé ayant un débattement limité par exemple à 70°.  The invention is here described in connection with a single-phase electric motor having a limited travel for example at 70 °.
En référence aux figures 1 à 3, le moteur électrique comprend un stator 1 et un rotor 2 monté pour pivoter dans le stator 1 autour d'un axe A. Le rotor 2 est connu en lui-même et, comme l'invention ne porte pas sur celui-ci, il ne sera pas décrit plus en détail par la suite .  With reference to FIGS. 1 to 3, the electric motor comprises a stator 1 and a rotor 2 mounted for pivoting in the stator 1 around an axis A. The rotor 2 is known per se and, as the invention relates to not on this one, it will not be described in more detail later.
Le stator 1 a deux paires de dents 3 symétriquement opposées l'une à l'autre pour définir deux paires de pôles. Les dents 3 d'une paire s'étendent à 90° par rapport aux dents 3 de l'autre paire. Chaque dent a une extrémité libre élargie s' étendant en arc de cercle autour d'une portion du rotor 1.  The stator 1 has two pairs of teeth 3 symmetrically opposite each other to define two pairs of poles. The teeth 3 of one pair extend at 90 ° with respect to the teeth 3 of the other pair. Each tooth has an enlarged free end extending in an arc around a portion of the rotor 1.
Le corps du stator 1 comprend de façon connue en elle-même des tôles qui sont accolées les unes aux autres selon l'axe A. Le corps du stator 1 a ici une section transversale à l'axe A ayant un contour externe de forme carrée .  The body of the stator 1 comprises, in a manner known per se, sheets which are contiguous with each other along the axis A. The body of the stator 1 here has a cross section with the axis A having an outer contour of square shape. .
Le corps du stator 1 est formé de secteurs angulaires qui comportent chacun une des dents 3 et qui sont assemblés les uns aux autres par un assemblage en queue droite. Le pas des queues sera de préférence de l'ordre d'une à deux tôles. L'assemblage à queues droites permet d' augmenter la surface de recouvrement et de rendre le moteur moins sensibles aux entrefers parasites.  The body of the stator 1 is formed of angular sectors which each comprise one of the teeth 3 and which are assembled to each other by a straight tail assembly. The pitch of the tails will preferably be of the order of one to two sheets. The straight tails assembly increases the overlap surface and makes the engine less susceptible to spurious air gaps.
Le moteur comportant trois circuits électriques, généralement désignés en 10, définissant chacun deux bo- bines 11, 12 en série (les circuits électriques, et leurs bobines, sont différenciés les uns des autres par les chiffres 1, 2 et 3 qui suivent la référence 10, 11, 12 respectivement). Les bobines 11, 12 entourent chacune une des dents 3 et sont sensiblement identiques les unes aux autres. Un premier et un deuxième des circuits électriques 10, respectivement référencés 10.1, 10.2, sont montés sur une des deux paires de dents 3 et un troisième des circuits électriques, référencé 10.3 est monté sur l'autre des paires de dents 3. The engine having three electrical circuits, generally designated 10, each defining two booster 11, 12 in series (the electrical circuits, and their coils, are differentiated from each other by the numbers 1, 2 and 3 which follow the reference 10, 11, 12 respectively). The coils 11, 12 each surround one of the teeth 3 and are substantially identical to each other. A first and a second of the electrical circuits 10, respectively referenced 10.1, 10.2, are mounted on one of the two pairs of teeth 3 and a third of the electrical circuits, referenced 10.3 is mounted on the other pair of teeth 3.
La bobine 11.1 du premier circuit électrique 10.1 et la bobine 11.2 du deuxième circuit électrique 10.2 en¬ tourent l'une des dents 3 de la paire de dents 3 et la bobine 12.1 du premier circuit électrique 10.1 et la bobine 12.2 du deuxième circuit électrique 10.2 entourent l'autre des dents 3 de cette même paire de dents 3. Les bobines 11 et 12 de chacun des premier et deuxième circuits électriques 10.1, 10.2 sont ainsi montées sur des pôles différents de la première paire de pôles. The coil of the first electric circuit 11.1 10.1 11.2 and the coil of the second electrical circuit 10.2 ¬ tourent one of the teeth 3 of the pair of teeth 3 and the spool of the first electric circuit 12.1 10.1 12.2 coil and the second electrical circuit 10.2 surround the other teeth 3 of the same pair of teeth 3. The coils 11 and 12 of each of the first and second electrical circuits 10.1, 10.2 are thus mounted on different poles of the first pair of poles.
La bobine 11.3 et la bobine 12.3 du troisième circuit électrique 10.3 entourent chacune l'une des dents 3 de l'autre paire de dents 3.  The coil 11.3 and the coil 12.3 of the third electrical circuit 10.3 each surround one of the teeth 3 of the other pair of teeth 3.
Les bobines sont enroulées autour des dents 3 avant l'assemblage des secteurs pour constituer le stator 1. Les bobines sont formées chacune d'un fil électriquement conducteur entouré d'un isolant et les bobines d'une même dent sont séparées l'une de l'autre par isolant et séparé du stator également par un isolant. L'isolant peut être formé d'un support annulaire ayant une section transversale en forme de C délimitant un logement périphérique recevant la bobine.  The coils are wound around the teeth 3 before joining the sectors to form the stator 1. The coils are each formed of an electrically conductive wire surrounded by an insulator and the coils of the same tooth are separated from one another. the other by insulation and separated from the stator also by an insulator. The insulation may be formed of an annular support having a C-shaped cross section defining a peripheral housing receiving the coil.
On note que les bobines 11, 12 ont des portions s' étendant en saillie axiale du corps du stator 1. Lesdi- tes portions en saillie sont recouvertes par un chapeau 15 (dont deux seuls sont visibles sur la figure 1) . Les chapeaux 15, en matériau magnétique, sont agencés en vue de canaliser le flux de fuite. Ceci permet de faciliter le filtrage des courants à haute fréquence engendrés par la commande à découpage du moteur et d'isoler les bobines les unes des autres vis-à-vis de ces courants à haute fréquence . Note that the coils 11, 12 have portions extending axially from the body of the stator 1. The said protruding portions are covered by a cap 15 (only two of which are visible in Figure 1). The Hats 15, made of magnetic material, are arranged in order to channel the leakage flow. This facilitates the filtering of the high frequency currents generated by the switching control of the motor and isolating the coils from each other vis-à-vis these high frequency currents.
Dans la variante de la figure 4, le stator 1 est en deux parties, à savoir un corps interne tubulaire 1.1 comportant des dents 3 en saillie vers l'extérieur et une culasse tubulaire 1.2 entourant le corps interne tubulaire 1.1.  In the variant of Figure 4, the stator 1 is in two parts, namely a tubular inner body 1.1 having teeth 3 projecting outwardly and a tubular yoke 1.2 surrounding the tubular inner body 1.1.
Les éléments identiques ou analogues à ceux pré¬ cédemment décrits porteront la même référence numérique dans la description qui suit du deuxième mode de réalisa- tion de l'invention. Identical or similar elements to those pre ¬ cédemment described bear the same reference numeral in the following description of the second achievements tion mode of the invention.
Le moteur de la figure 5 est identique à celui du premier mode de réalisation sauf en ce que les bobines 11, 12 de chacun des premier et deuxième circuits électriques 10.1, 10.2 sont montées sur un même pôle de la première paire de pôles.  The motor of Figure 5 is identical to that of the first embodiment except that the coils 11, 12 of each of the first and second electrical circuits 10.1, 10.2 are mounted on the same pole of the first pair of poles.
Plus précisément, les bobines 11.1, 12.1 du premier circuit électrique 10. Ί entourent une des dents 3 d'une des deux paires de dents et les bobines 11.2, 12.2 du deuxième circuit électrique 10.2 entourent l'autre des dents 3 de cette même paire de dents 3.  More precisely, the coils 11.1, 12.1 of the first electrical circuit 10. Surround one of the teeth 3 of one of the two pairs of teeth and the coils 11.2, 12.2 of the second electrical circuit 10.2 surround the other of the teeth 3 of this same pair. of teeth 3.
Comme précédemment, la bobine 11.3 et la bobine 12.3 du troisième circuit électrique 10.3 entourent chacune l'une des dents 3 de l'autre paire de dents 3.  As before, the coil 11.3 and the coil 12.3 of the third electrical circuit 10.3 each surround one of the teeth 3 of the other pair of teeth 3.
Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits mais englobe toute variante entrant dans le champ de l'invention telle que définie par les revendications.  Of course, the invention is not limited to the embodiments described but encompasses any variant within the scope of the invention as defined by the claims.
En particulier, le nombre n de circuits électriques et le nombre N de paires de pôles peuvent être dif- férents de trois et deux. Le moteur peut ne pas comprendre de chapeaux. In particular, the number n of electrical circuits and the number N of pairs of poles can be different from three and two. The engine may not include hats.
Le stator peut comprendre des portions de décou¬ plage s' étendant entre les bobines de dents adjacentes. The stator may comprise portions of décou ¬ range extending between adjacent coils of teeth.
Le stator peut avoir d' autres formes et par exem- pie une forme extérieure circulaire.  The stator may have other shapes, for example a circular outer shape.

Claims

REVENDICATIONS
1. Moteur électrique comprenant un stator (1) définissant un nombre N, au moins égal à deux, de paires de pôles et un rotor (2) monté pour pivoter dans le stator, le moteur comportant un nombre n de circuits électriques (10) définissant chacun deux bobines (11, 12) montées sur des pôles du stator, les bobines de tous les circuits étant sensiblement identiques les unes aux autres, le nombre n de circuits électriques étant supérieur au nombre N de paires de pôles et au moins un premier et un deuxième des circuits électriques (10.1, 10.2) étant montés sur une première des paires de pôles et un troisième des circuits électriques (10.3) étant monté sur une deuxième des paires de pôles. An electric motor comprising a stator (1) defining a number N, at least two, of pairs of poles and a rotor (2) mounted for pivoting in the stator, the motor having a number n of electrical circuits (10). each defining two coils (11, 12) mounted on stator poles, the coils of all the circuits being substantially identical to each other, the number n of electrical circuits being greater than the number N of pole pairs and at least a first and a second of the electrical circuits (10.1, 10.2) being mounted on a first of the pairs of poles and a third of the electrical circuits (10.3) being mounted on a second of the pairs of poles.
2. Moteur selon la revendication 1, dans lequel les bobines (11, 12) de chacun des premier et deuxième circuits électriques (10.1, 10.2) sont montées sur des pôles différents de la première paire de pôles.  2. Motor according to claim 1, wherein the coils (11, 12) of each of the first and second electrical circuits (10.1, 10.2) are mounted on different poles of the first pair of poles.
3. Moteur selon la revendication 1, dans lequel les bobines (11, 12) de chacun des premier et deuxième circuits électriques (10.1, 10.2) sont montées sur un même pôle de la première paire de pôles.  3. Motor according to claim 1, wherein the coils (11, 12) of each of the first and second electrical circuits (10.1, 10.2) are mounted on the same pole of the first pair of poles.
4. Moteur selon la revendication 1, dans lequel chaque pôle est formé d'une dent (3) ayant une extrémité libre élargie.  4. Motor according to claim 1, wherein each pole is formed of a tooth (3) having an enlarged free end.
5. Moteur selon la revendication 4, dans lequel le stator (1) est formé de secteurs angulaires qui comportent chacun un des pôles et qui sont assemblés les uns aux autres .  5. Motor according to claim 4, wherein the stator (1) is formed of angular sectors which each have one of the poles and which are assembled to each other.
6. Moteur selon la revendication 5, dans lequel les secteurs angulaires sont reliés par un assemblage en queue droite.  6. Motor according to claim 5, wherein the angular sectors are connected by a straight tail assembly.
7. Moteur selon la revendication 4, dans lequel le nombre N de paires de pôles est égal à deux et le sta- tor (1) a une section transversale ayant un contour externe de forme carrée. 7. Motor according to claim 4, wherein the number N of pairs of poles is equal to two and the tor (1) has a cross section having an outer contour of square shape.
8. Moteur selon la revendication 4, dans lequel le stator (1) est en deux parties, à savoir une partie interne tubulaire (1.2) comportant les pôles et une culasse tubulaire (1,3) entourant la partie interne.  8. Motor according to claim 4, wherein the stator (1) is in two parts, namely a tubular inner portion (1.2) having the poles and a tubular yoke (1,3) surrounding the inner portion.
9. Moteur selon la revendication 1, dans lequel les bobines (11, 12) ont des portions s' étendant en saillie axiale du stator (1) et les portions en saillie sont recouvertes par un chapeau (15) en matériau magnétique en vue de canaliser le flux de fuite.  9. Motor according to claim 1, wherein the coils (11, 12) have axially projecting portions of the stator (1) and the projecting portions are covered by a cap (15) of magnetic material in order to channel the leakage flow.
EP14719695.0A 2013-04-18 2014-04-16 Electric motor with redundant electric circuits Withdrawn EP2987224A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1353538A FR3004864B1 (en) 2013-04-18 2013-04-18 ELECTRIC MOTOR WITH REDUNDANT ELECTRIC CIRCUITS
PCT/EP2014/057836 WO2014170414A2 (en) 2013-04-18 2014-04-16 Electric motor with redundant electric circuits

Publications (1)

Publication Number Publication Date
EP2987224A2 true EP2987224A2 (en) 2016-02-24

Family

ID=48856835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14719695.0A Withdrawn EP2987224A2 (en) 2013-04-18 2014-04-16 Electric motor with redundant electric circuits

Country Status (4)

Country Link
US (1) US20160190968A1 (en)
EP (1) EP2987224A2 (en)
FR (1) FR3004864B1 (en)
WO (1) WO2014170414A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3042077B1 (en) * 2015-10-05 2019-05-31 Safran Landing Systems ELECTRIC MOTOR.
US10686355B2 (en) * 2016-07-15 2020-06-16 Magnemotion, Inc. Transport system puck assembly

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1488596A1 (en) * 1965-11-19 1969-04-10 Licentia Gmbh Stand for micro motors
US4480203A (en) * 1982-12-30 1984-10-30 Tokyo Electric Co., Ltd. Stepping motor
DE3521241C1 (en) * 1985-06-13 1986-09-18 Schabmüller GmbH, 8070 Ingolstadt DC motor
US5179308A (en) * 1992-01-14 1993-01-12 Charles Stark Draper Laboratory, Inc. High-speed, low-loss antifriction bearing assembly
CA2151532C (en) * 1994-07-25 1998-12-22 Emerson Electric Co. Auxiliary starting switched reluctance motor
US6020711A (en) * 1998-03-05 2000-02-01 The United States Of America As Represented By The Secretary Of The Air Force Multiple winding channel, magnetic coupling-alterable reluctance electrical machines and their fault tolerant control
DE19820929A1 (en) * 1998-05-09 1999-11-11 Ako Werke Gmbh & Co Device for controlling a single-phase synchronous motor
EP1063753B1 (en) * 1999-06-22 2009-07-22 Levitronix LLC Electric rotary drive comprising a magnetically suspended rotor
US7382076B2 (en) * 2003-10-21 2008-06-03 Matsushita Electric Industrial Co., Ltd. Spindle motor
US20060067022A1 (en) * 2004-09-30 2006-03-30 Valeo Electrical Systems, Inc. Fail-safe system for electric power steering in vehicles
US7095150B2 (en) * 2004-10-21 2006-08-22 Shop Vac Corporation Apparatus for securing a bobbin of a reluctance machine
US7327066B2 (en) * 2005-03-01 2008-02-05 Nidec Corporation Motor and recording disk drive device provided with the same
CN102270888B (en) * 2006-10-13 2013-10-16 株式会社三井高科技 Laminated core
US20080157622A1 (en) * 2007-01-03 2008-07-03 General Electric Company Fault-tolerant permanent magnet machine
DE102010064173A1 (en) * 2010-12-27 2012-06-28 Robert Bosch Gmbh Winding tooth for an electrical machine, machine component and electric machine
EP2498381B1 (en) * 2011-03-08 2018-10-10 Siemens Aktiengesellschaft Stator coil segment for an electro mechanical transducer, in particular a generator and electro mechanical transducer, in particular electric generator
US8648518B2 (en) * 2011-10-05 2014-02-11 Rechi Precision Co., Ltd. Compressor with snug perforated stator end-cover

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014170414A2 *

Also Published As

Publication number Publication date
FR3004864A1 (en) 2014-10-24
WO2014170414A2 (en) 2014-10-23
FR3004864B1 (en) 2015-04-24
WO2014170414A3 (en) 2015-06-11
US20160190968A1 (en) 2016-06-30

Similar Documents

Publication Publication Date Title
EP2209193B1 (en) Rotating electric machine with saliant poles
EP1057242B1 (en) Rotating electric machine with permanent magnets and magnetic resistance having an improved structure
FR2965987A1 (en) ROTARY ELECTRIC MACHINE
WO2014096640A2 (en) Claw rotor provided with a field coil insulator, and rotary electric machine equipped with such a rotor
FR2696057A1 (en) Elongated torque motor and angular travel control device comprising it.
EP3430706A1 (en) Rotor for axial flux electromagnetic motor or generator with semi-embedded magnets and axial holding means
WO2014170414A2 (en) Electric motor with redundant electric circuits
EP2209192A1 (en) Rotating electric machine, in particular for the starter of an automotive vehicle
FR3022706A1 (en) ELECTROMAGNETIC SYNCHRONOUS MOTOR WITH MAGNETIC FLOWS COMBINED AXIAL AND RADIAL.
EP3387742B1 (en) Rotor of an axial-flow electromagnetic motor having a corrugated-shape integral magnet
FR3051295B1 (en) ROTATING ELECTRIC MACHINE WITH INCREASED POWER
EP3164929A2 (en) Electromagnetic motor comprising radial air gaps and a rotor surrounded by two stators, reducing cogging torque
WO2020234532A1 (en) Low noise gear motor with dissymetric electric motor
EP0458056A1 (en) Electromagnetic motor
WO2015004341A1 (en) Poly-air-gap electromagnetic actuator having permanent magnets and iron-free winding elements
EP2982022B1 (en) Electric motor having a low short-circuit torque, drive device with a plurality of motors and method for producing such a motor
FR3083022A1 (en) ROTATING ELECTRIC MACHINE HAVING A ROTOR CONFIGURATION REDUCING TORQUE Ripples
WO2022069500A1 (en) Axial-flux inductor for a rotary electrical machine providing traction
FR3069113A1 (en) METHOD FOR CONTROLLING A POLYPHASE ROTARY ELECTRIC MACHINE AND ROTATING ELECTRIC MACHINE USING THE SAME
WO2014184206A2 (en) Stator with predetermined inductance, electric motor comprising such a stator and method of manufacturing such a stator
EP0828335B1 (en) Motor vehicle generator with three-phase windings
EP3763018B1 (en) Rotating electrical machine with fractional winding
FR2861226A1 (en) Multi-phase electric motor includes phase windings situated in separated sectors along axis of rotor
FR3083384A1 (en) BRUSHLESS DIRECT CURRENT ELECTRIC MOTOR AND ASSOCIATED ROTOR
WO2024132600A1 (en) Stator of an axial flux electric machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20151015

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SAFRAN ELECTRONICS & DEFENSE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200423

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200904