FR2474986A1 - Antislip circuit for electric locomotives - uses linear motor acting on rails and powered from main motor - Google Patents

Antislip circuit for electric locomotives - uses linear motor acting on rails and powered from main motor Download PDF

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Publication number
FR2474986A1
FR2474986A1 FR8002447A FR8002447A FR2474986A1 FR 2474986 A1 FR2474986 A1 FR 2474986A1 FR 8002447 A FR8002447 A FR 8002447A FR 8002447 A FR8002447 A FR 8002447A FR 2474986 A1 FR2474986 A1 FR 2474986A1
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France
Prior art keywords
motor
traction
linear motor
rotating
acting
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FR8002447A
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French (fr)
Inventor
Yves Machefert-Tassin
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MTE SA
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MTE SA
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Publication date
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Priority to FR8002447A priority Critical patent/FR2474986A1/en
Publication of FR2474986A1 publication Critical patent/FR2474986A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/10—Indicating wheel slip ; Correction of wheel slip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The locomotive wheels slippage, especially encountered on inclines, is countered by introduction of a linear motor (7) acting on the rails (8). The main traction (11) motor may be a DC or asynchronous type from which power is taken via a converter (6) to the linear motor windings. The linear motor is brought into oeration by a sensor circuit (9) capable of detecting wheel slip. This closes the power line switches (10) from the converter to the linear motor. Where an asynchronous main motor is used, the converter provides a slightly higher supply frequency to the linear motor than the synchronous speed of the main motor. In order to avoid unbalance the linear motor should act on a central rail or on both rails simultaneously.

Description

DISPOSITIF D'ANTIPATINAGE POUR VEHICULE MOTEUR EQUIPE o'UN MOTEUR ELECTRIQUE TOURNANT DE TRACTION
La présente invention concerne un dispositif d'antipatinage pour un véhicule moteur notamment un véhicule ferroviaire, équipé d'un moteur tournant électrique de traction.ANTI-SKIDING DEVICE FOR A MOTOR VEHICLE EQUIPPED WITH A ROTATING DRIVE ELECTRIC MOTOR
The present invention relates to a traction control device for a motor vehicle, in particular a railway vehicle, equipped with an electric rotating traction motor.

De façon générale, lorsqu'un train aborde une forte rampe, les roues motrices du véhicule moteur ont tendance à patiner sur les rails du fait d'un manque d'adhérence.Generally, when a train enters a strong ramp, the drive wheels of the motor vehicle tend to slip on the rails due to a lack of grip.

On a donc cherché à augmenter l'adhérence des roues en augmentant le poids du véhicule moteur ou bien en engendrant par des moyens électromagnétiques une force perpendiculaire aux rails et tendant à augmenter la pression verticale exercée par chaque roue motrice sur le rail cor respondant. Toutefois ces solutions ne sont pas satisfaisantes puisque aucune force de traction additionnelle n1 est engendrée. Pour aborder les rampes avec une force de traction additionnelle, on a donc pensé à adjoindre un moteur électrique auxiliaire qui ne rentrerait en service que lorsqu'il serait nécessaire.Dans les solutions adoptées, il résulte d'un tel moteur auxiliaire un surdimensionnement des convertisseurs associés, si lton désire pouvoir faire fonctionner le moteur additionnel pendant un temps suffisamment long, ce qui rend la solution extrêmement coûteuse.We have therefore sought to increase the grip of the wheels by increasing the weight of the motor vehicle or else by generating electromagnetic means a force perpendicular to the rails and tending to increase the vertical pressure exerted by each driving wheel on the corresponding rail. However, these solutions are not satisfactory since no additional tensile force n1 is generated. To approach the ramps with an additional pulling force, we therefore thought of adding an auxiliary electric motor which would only come back into service when it was necessary. In the solutions adopted, this results in an oversizing of the converters associated, if lton wishes to be able to run the additional engine for a sufficiently long time, which makes the solution extremely expensive.

Le but de la présente invention est d'obvier à ces inconvé nient s. The object of the present invention is to obviate these drawbacks.

Selon l'invention, le dispositif d'antipatinage est caractérisé en ce que le rotor du moteur tounant de traction est pourvu de prises équidistantes sur son enroulement rotorique, ce dernier jouant le rôle d'un convertisseur de courant, auquel est connecté en cascade un moteur asynchrone à fréquence variable, engendrant une force de traction additionnelle, dont la fréquence de synchronisme est légèrement inférieure à celle qui est engendrée par l'enroulement de conversion, par l'intermédiaire d'un interrupteur commandé en réponse à la détection d'un patinage des roues motrices sur lesquelles agit le moteur tournant de traction.According to the invention, the traction control device is characterized in that the rotor of the rotating traction motor is provided with equidistant sockets on its rotor winding, the latter playing the role of a current converter, to which a cascade is connected variable frequency asynchronous motor, generating an additional traction force, the synchronization frequency of which is slightly lower than that generated by the conversion winding, by means of a switch controlled in response to the detection of a slipping of the driving wheels on which the rotating traction motor acts.

Selon un mode préféré de réalisation, le moteur tournant de traction étant aussi bien un moteur asynchrone qu'un moteur à courant continu, le moteur asynchrone engendrant une force de traction additionnelle est un moteur à induction à déplacement rectiligne, dit moteur linéaire, donc indépendant de l'adhérence des roues motrices sur les rails.According to a preferred embodiment, the rotating traction motor being both an asynchronous motor and a direct current motor, the asynchronous motor generating an additional traction force is an induction motor with rectilinear displacement, called a linear motor, therefore independent the grip of the drive wheels on the rails.

L'invention sera mieux comprise et d'autres buts, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lecture de la description qui suit de modes de réalisation donnés à titre non limitatif, description à laquelle une planche de dessins est annexée
La figure 1 représente schématiquement le mode préféré de réalisation de l'invention.The invention will be better understood and other objects, advantages and characteristics thereof will appear more clearly on reading the following description of embodiments given without limitation, description to which a sheet of drawings is attached.
Figure 1 shows schematically the preferred embodiment of the invention.

La figure 2 représente schématiquement un deuxième mode de réalisation de l'invention et
La figure 3 représente schématiquement la mise en oeuvre du mode illustré par la figure 1.FIG. 2 schematically represents a second embodiment of the invention and
FIG. 3 schematically represents the implementation of the mode illustrated by FIG. 1.

En référence maintenant aux figures 1 et 3, le véhicule moteur est équipé d'un moteur tournant à courant continu 11 dont le collecteur 2 est relié à une source de courant continu 3 . L'arbre 4 de ce moteur tournant li est accouplé de manière habituelle à un essieu moteur.With reference now to FIGS. 1 and 3, the motor vehicle is equipped with a direct current rotating motor 11 whose collector 2 is connected to a direct current source 3. The shaft 4 of this rotating engine li is coupled in the usual way to a driving axle.

Sur la figure 2, le véhicule moteur est équipé d'un moteur tournant asynchrone 12 dont le stator est relié à une source d'alimentation électrique alternative 32.In FIG. 2, the motor vehicle is equipped with an asynchronous rotating motor 12, the stator of which is connected to an alternative electrical power source 32.

Sur ces figures, le moteur synchrone 7 est un moteur linéaire engendrant d'une part une force parallèle au rail 8 par rapport auquel il agit, et, d'autre part, une force perpendiculaire à ce même rail 8 augmentant ainsi l'adhérence des différentes roues du véhicule.In these figures, the synchronous motor 7 is a linear motor generating on the one hand a force parallel to the rail 8 with respect to which it acts, and, on the other hand, a force perpendicular to this same rail 8 thus increasing the adhesion of the different vehicle wheels.

Toutefois, il est bien évident que le moteur asynchrone 7 peut également être constitué par un moteur tournant agissant sur un essieu porteur différent de celui auquel est accouplé le moteur 11 ou 12.However, it is obvious that the asynchronous motor 7 can also be constituted by a rotating motor acting on a carrier axle different from that to which the motor 11 or 12 is coupled.

Un circuit 9 incluant un détecteur de patinage est prévu pour commander un interrupteur 10 en réponse à la détection d'un éventuel patinage sensible des roues motrices auxquelles est accouplé le moteur il ou 12. Dans ce but, la vitesse tangentielle d'une roue motrice est comparée avec la vitesse de défilement relatif du rail 8 et dès qu'un seuil déterminé est atteint, l'interrupteur 10 est fermé de manière à connecter électriquement le moteur asynchrone 7 aux bagues 6 prévues à cet effet sur le rotor du moteur de traction 11 ou 12, bagues connectées aux sorties de l'enroulement de conversion de courant. Le moteur de traction agit alors en convertisseur pour le moteur 7.A circuit 9 including a slip sensor is provided for controlling a switch 10 in response to the detection of a possible sensitive slip of the driving wheels to which the motor il or 12 is coupled. For this purpose, the tangential speed of a driving wheel is compared with the relative running speed of the rail 8 and as soon as a determined threshold is reached, the switch 10 is closed so as to electrically connect the asynchronous motor 7 to the rings 6 provided for this purpose on the rotor of the traction motor 11 or 12, rings connected to the outputs of the current conversion winding. The traction motor then acts as a converter for the motor 7.

Les divers éléments sont bobinés de telle manière que la fré quence dù courant issu des prises de 1 ltenroulement de conversion de courant soit légèrement supérieure à la fréquence de synchronisme du moteur asynchrone 7.The various elements are wound in such a way that the frequency of current coming from the sockets of the current conversion winding is slightly higher than the synchronism frequency of the asynchronous motor 7.

Lorsque le véhicule moteur aborde une rampe, ses roues motrices ont tendance à glisser puis à patiner. Dès que le patinage atteint un seuil déterminé, par exemple 5*, l'interrupteur 10 se ferme, le moteur asynchrone 7 va alors btre alimenté à une fréquence légèrement supérieure à sa fréquence de synchronisme, ce qui engendre un glissement dont il résulte une force de traction additionnelle ainsi qu'une augmentation de l'adhérence des roues motrices. Le système va donc par suite tendre vers une nouvelle position d'équilibre.When the motor vehicle approaches a ramp, its drive wheels tend to slip and then slip. As soon as the slip reaches a determined threshold, for example 5 *, the switch 10 closes, the asynchronous motor 7 will then be fed at a frequency slightly higher than its synchronism frequency, which generates a slip from which a force results. additional traction and increased grip of the drive wheels. The system will therefore tend towards a new equilibrium position.

Ce moteur asynchrone 7 est, de préférence, un moteur triphasé puisqu une augmentation du nombre de phases de ce moteur 7 est liée à l'augmentation du nombre de bagues 6 connectées-à l'enroulement de conversion de courant du moteur tournant de traction, et qu'un nombre de bagues supérieur à 3 est généralement inopportun à cause des conditions requises d'encombrement maximal du rotor entre les roues du véhicule moteur.This asynchronous motor 7 is preferably a three-phase motor since an increase in the number of phases of this motor 7 is linked to the increase in the number of rings 6 connected to the current conversion winding of the rotating traction motor, and that a number of rings greater than 3 is generally inappropriate because of the conditions required for maximum space between the rotor between the wheels of the motor vehicle.

Pour éviter un fonctionnement déséquilibré d'un tel dispositif, il est préférable, dans le cas d'un moteur linéaire que ce dernier agisse sur un rail central, ou bien que deux moteurs linéaires soient prévus en parallèle, chacun d'eux agissant respectivement sur un rail lat-éral à la voie.To avoid unbalanced operation of such a device, it is preferable, in the case of a linear motor, that the latter acts on a central rail, or else that two linear motors are provided in parallel, each of them acting respectively on a side rail to the track.

Un tel dispositif constituant une crémaillère électrique, peut, bien sûr, être mis en oeuvre dans un véhicule moteur non ferroviaire à traction électrique.Such a device constituting an electric rack, can, of course, be implemented in a non-railway motor vehicle with electric traction.

Bien que seuls certains modes de réalisation de l'invention aient été décrits, il est évident que toute modification apportée par l'Homme de 1'Art dans le même esprit ne sortirait pas du cadre de la présente invention. Although only certain embodiments of the invention have been described, it is obvious that any modification made by a person skilled in the art in the same spirit would not depart from the scope of the present invention.

Claims (6)

REVENDICATIONS 1. - Dispositif d'antipatinage pour véhicule moteur équipé d'un moteur électrique tournant de traction agissant sur au moins une roue motrice, caractérisé en ce que le rotor 5 du dit moteur électrique tournant de traction 11 est pourvu de prises équidistantes sur son enroulement rotorique qui joue le rôle d'un convertisseur courant auquel est connecté en cascade un moteur asynchrone à fréquence variable 7, engendrant une force de traction additionnelle, dont la fréquence de synchronisme est légèrement inférieure à celle qui est engendrée par le dit enroulement de conversion, par l'intermédiaire d'un interrupteur 10 commandé en réponse à la détection d'un patinage des dites roues motrices sur lesquelles agit Le dit moteur tournant de traction.1. - Traction control device for motor vehicle equipped with a rotating electric traction motor acting on at least one driving wheel, characterized in that the rotor 5 of said electric rotating traction motor 11 is provided with equidistant sockets on its winding rotor which plays the role of a current converter to which a variable frequency asynchronous motor 7 is connected in cascade, generating an additional traction force, the synchronism frequency of which is slightly lower than that which is generated by said conversion winding, by means of a switch 10 controlled in response to the detection of a slippage of said driving wheels on which said said rotating traction motor acts. 2. - Dispositif selon la revendication 1 caractérisé en ce que le dit moteur asynchrone à fréquence variable 7 est triphasé.2. - Device according to claim 1 characterized in that said asynchronous motor with variable frequency 7 is three phase. 3. - Dispositif selon la revendication 1 ou 2 caractérisé en ce que le dit moteur asynchrone à fréquence variable 7 est un moteur à induction à déplacement rectiligne, dit moteur linéaire, agissant sur un rail 8prévu à cet effet le long de la voie.3. - Device according to claim 1 or 2 characterized in that said asynchronous motor with variable frequency 7 is an induction motor with rectilinear displacement, said linear motor, acting on a rail 8provided for this purpose along the track. 4. - Dispositif selon la revendication 1 ou 2 caractérisé en ce que le dit moteur asynchrone 7 est un moteur tournant agissant sur un essieu différent de celui sur lequel agit le dit moteur électrique tournant de traction.4. - Device according to claim 1 or 2 characterized in that said asynchronous motor 7 is a rotating motor acting on an axle different from that on which acts said electric motor rotating traction. 5. - Dispositif selon la revendication 1 caractérisé en ce que le dit interrupteur 10 est commandé par un circuit 9 incluant un détecteur de patinage comparant la vitesse tangentielle d'une roue motrice et la vitesse relative du dit rail 8 par rapport au dit véhicule moteur.5. - Device according to claim 1 characterized in that said switch 10 is controlled by a circuit 9 including a slip sensor comparing the tangential speed of a driving wheel and the relative speed of said rail 8 relative to said motor vehicle . 6. - Dispositif selon la revendication 5 caractérisé en ce que le dit circuit 9 commande la fermeture du dit interrupteur 10 lorsque la différence des dites vitesses est supérieure à un seuil déterminé. 6. - Device according to claim 5 characterized in that said circuit 9 controls the closing of said switch 10 when the difference of said speeds is greater than a determined threshold.
FR8002447A 1980-02-05 1980-02-05 Antislip circuit for electric locomotives - uses linear motor acting on rails and powered from main motor Withdrawn FR2474986A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8002447A FR2474986A1 (en) 1980-02-05 1980-02-05 Antislip circuit for electric locomotives - uses linear motor acting on rails and powered from main motor

Applications Claiming Priority (1)

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FR8002447A FR2474986A1 (en) 1980-02-05 1980-02-05 Antislip circuit for electric locomotives - uses linear motor acting on rails and powered from main motor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595823A1 (en) * 1986-03-12 1987-09-18 Regie Autonome Transports Method and device for determining the adhesion coefficient of two articles in contact with each other and able to slide
WO2001011758A1 (en) * 1999-08-05 2001-02-15 Glassy Metal Technologies Limited Asynchronous induction linear electric motor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1288367A (en) * 1961-04-07 1962-03-24 Thomson Houston Comp Francaise Adhesion control system usable in particular for railway equipment
FR1559729A (en) * 1967-12-26 1969-03-14
FR2148701A5 (en) * 1971-07-30 1973-03-23 Thomson Automatismes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1288367A (en) * 1961-04-07 1962-03-24 Thomson Houston Comp Francaise Adhesion control system usable in particular for railway equipment
FR1559729A (en) * 1967-12-26 1969-03-14
FR2148701A5 (en) * 1971-07-30 1973-03-23 Thomson Automatismes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595823A1 (en) * 1986-03-12 1987-09-18 Regie Autonome Transports Method and device for determining the adhesion coefficient of two articles in contact with each other and able to slide
WO2001011758A1 (en) * 1999-08-05 2001-02-15 Glassy Metal Technologies Limited Asynchronous induction linear electric motor

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