FR2516697A1 - ELECTRIC MAGNET SUPPLY CIRCUIT COMPRISING A SINGLE COIL AND REDUCTION RESISTORS - Google Patents
ELECTRIC MAGNET SUPPLY CIRCUIT COMPRISING A SINGLE COIL AND REDUCTION RESISTORS Download PDFInfo
- Publication number
- FR2516697A1 FR2516697A1 FR8121464A FR8121464A FR2516697A1 FR 2516697 A1 FR2516697 A1 FR 2516697A1 FR 8121464 A FR8121464 A FR 8121464A FR 8121464 A FR8121464 A FR 8121464A FR 2516697 A1 FR2516697 A1 FR 2516697A1
- Authority
- FR
- France
- Prior art keywords
- reduction
- terminals
- supply circuit
- bridge
- electromagnet
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 8
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
- H01F7/1838—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current by switching-in or -out impedance
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Relay Circuits (AREA)
Abstract
Description
CIRCUIT D'ALIMENTATION D'UN ELECTRO-AIMANT, COMPORTANT UNE
SEULE BOBINE ET DES RESISTANCES DE REDUCTION. SUPPLY CIRCUIT OF AN ELECTROMAGNET COMPRISING A
ONLY COIL AND REDUCTION RESISTORS.
L'invention se rapporte à un circuit d'alimentation d1un électro-aimant, comportant un pont d'éléments redresseurs, un enroulement unique branché entre les bornes à courant continu du pont, en série avec un contact de réduction fermé pendant la phase d'appel de l'armature de l'electro-aimant et ouvert pendant la phase de maintien et une résistance de réduction connectée en parallèle sur le contact de réduction.The invention relates to a supply circuit of an electromagnet, comprising a bridge of rectifying elements, a single winding connected between the DC terminals of the bridge, in series with a closed reduction contact during the phase of call of the electromagnet armature and open during the holding phase and a reduction resistor connected in parallel on the reduction contact.
Dans un tel circuit d'alimentation, pendant la phase d'appel de l'armature de l'électro-aimant, la r.ésistance de réduction est court-circuitée par le contact de réduction et, par consequent,le courant redressé qui circule dans l'enroulement est important ; par contre, pendant la phase de maintien, la résistance de réduction est en service et, par conséquent, le courant redressé qui circule dans l'enroulement est réduit.In such a supply circuit, during the inrush phase of the electromagnet armature, the reduction resistor is short-circuited by the reduction contact and, consequently, the rectified current which flows in the winding is important; on the other hand, during the holding phase, the reduction resistor is in service and, consequently, the rectified current which circulates in the winding is reduced.
Ce montage connu présente l'inconvénient de nécessiter l'emploi d'une résistance de réduction bobinée de forte puissance, chère, relativement fragile, et qu'il n'est pas possible de réaliser dans un montage intégré à bobine surmoulée. This known assembly has the drawback of requiring the use of a high power, expensive, relatively fragile, wound reduction reduction resistor, which cannot be produced in an integrated assembly with an overmolded coil.
L'invention propose de supprimer cet inconvénient et de permettre l'emploi, dans un circuit d'alimentation du genre susvisé, d'une résistance de réduction dans laquelle la puissance dissipée pendant la phase de maintien sera considérablement réduite.The invention proposes to eliminate this drawback and to allow the use, in a supply circuit of the aforementioned type, of a reduction resistor in which the power dissipated during the holding phase will be considerably reduced.
Suivant l'invention, ce résultat est obtenu en branchant la résistance de réduction entre l'une des bornes à courant alternatif du pont et l'une des bornes de l'enroulement.According to the invention, this result is obtained by connecting the reduction resistance between one of the AC terminals of the bridge and one of the terminals of the winding.
Les avantages de l'invention apparaîtront clairement à-la lumière de la description ci-après.The advantages of the invention will become apparent in the light of the description below.
La figure unique du dessin annexé représente schématiquement un circuit d'alimentation conforme à l'invention.The single figure of the accompanying drawing schematically represents a supply circuit according to the invention.
Le circuit d'alimentation représente au dessin comprend, branché entre les bornes A1 A2 du réseau, un pont de diodes D1-D4 aux bornes à courant continu (points de jonction entre
D1 D2 et D3 D4) duquel est branchée une bobine unique M, en série avec un contact de réduction C2. Le contact de commande générale de l'électro-aimant est désigné par C1.The supply circuit shown in the drawing comprises, connected between the terminals A1 A2 of the network, a diode bridge D1-D4 at the DC terminals (junction points between
D1 D2 and D3 D4) from which a single coil M is connected, in series with a reduction contact C2. The general control contact of the electromagnet is designated by C1.
Un résistance de réduction R est branchée entre A1 et la borne de la bobine reliée à C2 par exemple.A reduction resistor R is connected between A1 and the terminal of the coil connected to C2 for example.
Pendant la phase d'appel, C2 est fermé et le courant redressé normal passe dans la bobine M à travers C2.During the call phase, C2 is closed and the normal rectified current flows through the coil M through C2.
Pendant la phase de maintien, C2 étant ouvert, le courant qui circule dans la bobine et dans la résistance R, au lieu d'être un courant redressé bi-alternance comme dans le montage traditionnel, est un courant redressé monoalternance circulant de la diode Dl-D2 servant de diode de roue libre.During the holding phase, C2 being open, the current flowing in the coil and in the resistor R, instead of being a full-wave rectified current as in the traditional assembly, is a single-wave rectified current flowing from the diode Dl -D2 serving as a freewheeling diode.
On peut démontrer que pour un même courant moyen redressé dans la bobine, la puissance dissipée dans la résistance se trouve sensiblement divisée par-deux par rapport au montage traditionnel. It can be demonstrated that for the same average current rectified in the coil, the power dissipated in the resistor is substantially divided by two compared to the traditional assembly.
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8121464A FR2516697B1 (en) | 1981-11-17 | 1981-11-17 | ELECTRIC MAGNET SUPPLY CIRCUIT COMPRISING A SINGLE COIL AND REDUCTION RESISTORS |
DE19823240744 DE3240744A1 (en) | 1981-11-17 | 1982-11-04 | Circuit arrangement for supplying an electromagnet having reduction resistors and a single coil |
JP20179282A JPS5896703A (en) | 1981-11-17 | 1982-11-17 | Unit coil and electromagnet exciting circuit made of pressure reducing resistor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8121464A FR2516697B1 (en) | 1981-11-17 | 1981-11-17 | ELECTRIC MAGNET SUPPLY CIRCUIT COMPRISING A SINGLE COIL AND REDUCTION RESISTORS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2516697A1 true FR2516697A1 (en) | 1983-05-20 |
FR2516697B1 FR2516697B1 (en) | 1986-04-18 |
Family
ID=9264062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8121464A Expired FR2516697B1 (en) | 1981-11-17 | 1981-11-17 | ELECTRIC MAGNET SUPPLY CIRCUIT COMPRISING A SINGLE COIL AND REDUCTION RESISTORS |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5896703A (en) |
DE (1) | DE3240744A1 (en) |
FR (1) | FR2516697B1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074754B (en) * | 1960-02-04 | Siemens-Schuckertwerke Aktiengesellschaft, Berlin Und Erlangen | Circuit arrangement for supplying direct current train magnets from an alternating voltage source | |
GB972673A (en) * | 1960-02-12 | 1964-10-14 | Haegglund & Soener Ab | Supply system for feeding a direct-current magnet system |
DE1271829B (en) * | 1963-02-05 | 1968-07-04 | Metzenauer & Jung G M B H | Circuit arrangement for supplying the excitation coil of a pull magnet by means of rectifiers in a bridge circuit |
FR2290010A1 (en) * | 1974-10-28 | 1976-05-28 | Telemecanique Electrique | Electromagnet supply circuit - has rectifier bridge with two diodes connected byswitch and to windings via resistors |
FR2290009A1 (en) * | 1974-10-28 | 1976-05-28 | Telemecanique Electrique | ELECTRO-MAGNETS AND ELECTRO-MAGNETS SUPPLY CIRCUITS INCLUDING THESE CIRCUITS |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5330668Y2 (en) * | 1972-11-14 | 1978-07-31 |
-
1981
- 1981-11-17 FR FR8121464A patent/FR2516697B1/en not_active Expired
-
1982
- 1982-11-04 DE DE19823240744 patent/DE3240744A1/en active Granted
- 1982-11-17 JP JP20179282A patent/JPS5896703A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074754B (en) * | 1960-02-04 | Siemens-Schuckertwerke Aktiengesellschaft, Berlin Und Erlangen | Circuit arrangement for supplying direct current train magnets from an alternating voltage source | |
GB972673A (en) * | 1960-02-12 | 1964-10-14 | Haegglund & Soener Ab | Supply system for feeding a direct-current magnet system |
DE1271829B (en) * | 1963-02-05 | 1968-07-04 | Metzenauer & Jung G M B H | Circuit arrangement for supplying the excitation coil of a pull magnet by means of rectifiers in a bridge circuit |
FR2290010A1 (en) * | 1974-10-28 | 1976-05-28 | Telemecanique Electrique | Electromagnet supply circuit - has rectifier bridge with two diodes connected byswitch and to windings via resistors |
FR2290009A1 (en) * | 1974-10-28 | 1976-05-28 | Telemecanique Electrique | ELECTRO-MAGNETS AND ELECTRO-MAGNETS SUPPLY CIRCUITS INCLUDING THESE CIRCUITS |
Also Published As
Publication number | Publication date |
---|---|
DE3240744C2 (en) | 1993-09-23 |
DE3240744A1 (en) | 1983-05-26 |
FR2516697B1 (en) | 1986-04-18 |
JPS6233727B2 (en) | 1987-07-22 |
JPS5896703A (en) | 1983-06-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |