DE1463049A1 - Circuit arrangement to increase the service life of the contacts of a changeover switch for direct current motors which are operationally reversed in their direction of rotation and which are fed via a controlled valve - Google Patents
Circuit arrangement to increase the service life of the contacts of a changeover switch for direct current motors which are operationally reversed in their direction of rotation and which are fed via a controlled valveInfo
- Publication number
- DE1463049A1 DE1463049A1 DE19651463049 DE1463049A DE1463049A1 DE 1463049 A1 DE1463049 A1 DE 1463049A1 DE 19651463049 DE19651463049 DE 19651463049 DE 1463049 A DE1463049 A DE 1463049A DE 1463049 A1 DE1463049 A1 DE 1463049A1
- Authority
- DE
- Germany
- Prior art keywords
- changeover switch
- contacts
- valve
- rotation
- service life
- 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.)
- Pending
Links
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/548—Electromechanical and static switch connected in series
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
-
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
-
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
- H02P7/295—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC of the kind having one thyristor or the like in series with the power supply and the motor
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
- Control Of Multiple Motors (AREA)
Description
5307-65/Dr. Sd/Schä ^^^^X^ 1463049 5307-65 / Dr. Sd / Schä ^^^^ X ^ 1463049
CEM 1155 -NA \ CEM 1155 -NA \
Compagnie Electro-Me'canique, Paris, FrankreichCompagnie Electro-Me'canique, Paris, France
Schaltungsanordnung zur Erhöhung der Lebensdauer der Kontakte eines Umschalters für in ihrer Dreh-» richtung betriebsmässig umzusteuernde Gleichstrommotoren, die über ein gesteuertes Ventil gespeist werden. Circuit arrangement to increase the service life of the contacts of a changeover switch for direct current motors which have to be switched in their direction of rotation and which are fed via a controlled valve .
Bei bestimmten elektrischen Haushaltsgeräten, beispielsweise bei Waschmaschinen für einen vollautomatischen oder einen halbautomatischen Betrieb wird eine Prögrammsteuereinrichtung benutzt, welche den gewünschten Arbeite ablauf steuert. Beim Betrieb einer Waschmaschine steuert die Programmsteuereinrichtung imkllgemeinen mit Hilfe von Nockenscheiben einen Umschalter, welcher die Inbetriebsetzung, die Stillsetzung und die Umsteuerung des die Maschine antreibenden Motors bestimmt.In certain household electrical appliances, for example in washing machines for fully automatic or semi-automatic operation, a program control device is used which determines the desired Work flow controls. When operating a washing machine, the program control device generally controls with the aid of cam disks a changeover switch that determines the start-up, shutdown and reversal of the motor driving the machine.
Im allgemeinen benutzt man Einphasenmotoren, welche jedoch einen genügend starken Stromstoss im Moment des Anlaufens erfordern, der im allgemeinen mit HiKe eines phasenverschiebenden Kondensators in einer zum Anlauf dienenden Hilfswicklung erzeugt wird. Die Stromstärke ist im normalen Betrieb im allgemeinen nur gering und ist zur Zeit der Öffnung derIn general, single-phase motors are used which, however, require a sufficiently strong current surge at the moment of start-up generally with HiKe of a phase shifting capacitor in one auxiliary winding serving for starting is generated. The amperage is in normal operation is generally low and is at the time of opening the
809901/041809901/041
Abbrems schaltung ebenfalls nicht hoch. Man hat daher Schalter verwendet, welche sich schnell schliessen und sich langsam öffnen.Deceleration shift also not up. Switches were therefore used which close quickly and open slowly.
Eine gute Lebensdauer der Unterbrechungskontakte hängt offenbar von der Stromstärke ab, welche diese Kontakte im Augenblick der Unterbrechung durchsetzt.A good service life of the interruption contacts obviously depends on the current intensity which these contacts are at the moment of the interruption interspersed.
Die Benutzung von Gleichstrommotoren erlaubt einen sehr weichen Betrieb, einen verschieden schnellen Anstieg der Geschwindigkeit eine leichte elektronische Regelung und ist nicht kostspielig. Man benutzt vorteilhafterweise Motoren mit geringem Trägheitsmoment und einer geringen Ankerimpedanz, beispielsweise Motoren mit ebenem Luftspalt und scheibenförmigem Anker mit lameliierter Wicklung, sowie einen Erregerteil mit konstantem Felde.The use of DC motors allows very smooth operation, with a variable speed increase easy electronic control and is not expensive. One uses advantageously Low inertia and low inertia motors Armature impedance, for example motors with a flat air gap and a disk-shaped one Armature with laminated winding, as well as an exciter part with constant field.
Die Steuerung und die Regelung dieser Motoren bildet den Gegenstand einer am 28. April 1964 hinterlegten Patentanmeldung mit dem Titel "Dispositif de commande e'lectronique de moteur a. courant continu".The control and regulation of these motors forms the subject a patent application filed on April 28, 1964 and entitled "Dispositif de commande e'lectronique de moteur a. courant continu".
Bei der dort beschriebenen Schaltung wird der Motor über ein gesteuertes Ventil nach Art eines Festkörper-Thyratrons gesteuert, welches häufig als Thyristor bezeichnet wird. Die Regelung der Geschwindigkeit geschieht durch die Beeinflussung des Zündzeit-punktes der Steuerelektrode des Thyristors.In the circuit described there, the motor is controlled via a controlled valve in the manner of a solid-state thyratron, which is often referred to as a thyristor. The speed is regulated by influencing the ignition point of the control electrode of the thyristor.
809901/CUH809901 / CUH
Die Stromstärken, welche den Anker des Motors durchsetzen, sind höher als im FaBa eines Wechselstrommotors, und zwar insbesondere bei der Unterbrechung des Stromes. Aus diesem Grunde erweisen sich die gewöhnlichen Umschalter, die von der Programmsteuereinrichtung gesteuert werden, als schlecht geeignet, da sie im Unterbrechungsfalle viel zu langsam arbeiten und ihre Kontakte sich daher zu schnell abnutzen.The currents that pass through the armature of the motor, are higher than in the FaBa of an AC motor, and in particular when the power is interrupted. For this reason, the usual changeover switches, which are controlled by the program control device, turn out to be are considered unsuitable because they work far too slowly in the event of an interruption and their contacts therefore wear out too quickly.
Der Erfindung liegt die Aufgabe zugrunde, solche gewöhnlichen Umschalter zu verwenden, jedoch ihre oben geschilderten Nachteile zu vermeiden. The invention is based on the object of using such conventional changeover switches, but avoiding the disadvantages outlined above.
Die Erfindung betrifft eine Schaltungsanordnung zur Erhöhung der Lebensdauer der Kontakte eines Umschalters für in ihrer Drehrichtung umzusteuernde Gleichstrommotoren, die über ein gesteuertes Ventil ge« speist werden und ist dadurch gekennzeichnet, dass ein in den Kreis der Steuerelektrode des Ventils eingeschalteter Unterbrecher und der dem Motor vorgeschaltete Umschalter von einer Programmsteuereinrichtung derart abhängig sind, dass für die Stillsetzung des Motors zunächst der Unterbrecher im Kreis der Zündelektrode des Ventils geöffnet wird und erst nach dem Nulldurchgang des Ventilstromes und somit nach Erlöschen des Stromdurchgangs durch das Ventil der Umschalter geöffnet wird und dass zur Einleitung der Motorbewegung in der umgekehrten Drehrichtung der Unterbrecher erst nach Schliessung der Kontakte des Umschalters wieder geschlossen und das Ventil somit erst dann wieder gezündet wird.The invention relates to a circuit arrangement for increasing the service life of the contacts of a changeover switch in their direction of rotation DC motors to be reversed, which are operated via a controlled valve. are fed and is characterized by having one in the circle of Control electrode of the valve, switched on breaker and the changeover switch connected upstream of the motor from a program control device are dependent in such a way that initially the Interrupter in the circuit of the ignition electrode of the valve is opened and only after the valve current has passed zero and thus after it has gone out the passage of current through the valve, the changeover switch is opened and that initiates the motor movement in the reverse direction of rotation the interrupter is only closed again after the contacts of the changeover switch have closed and the valve is therefore only ignited again.
Die Erfindung wird im folgenden anhand der Zeichnung, welche ein Ausfuhrungsbeispiel darstellt, erläutert.The invention is explained below with reference to the drawing, which represents an exemplary embodiment.
Der Anker 1 eines Gleichstrommotors, dessen nicht mit dargestellter Erregerteil durch permanente Magnete gebildet wird, wird ober einen Umschalter 2 und über einen Thyristor 3 aus einer Quelle 4-5 mit gleichgerichtetem Strom,u nd zwar im allgemeinen mit dem Strom eines Doppelwellengleichrichters gespeist. Der Umschalter 2 wird von einer Programmsteuereinrichtung 6 bedient, welche die Schliessung, die Öffnung und den Anlauf des Motors in der umgekehrten Drehrichtung entsprechend einem vorbestimmten Programm steuert.The armature 1 of a DC motor, which is not shown with Exciter part is formed by permanent magnets, becomes upper a changeover switch 2 and a thyristor 3 from a source 4-5 with rectified current, and although generally fed with the current of a double-wave rectifier. The switch 2 is from a Program control device 6 operates, which the closing, the opening and controls the start of the motor in the reverse direction of rotation in accordance with a predetermined program.
Die Zündung des Thyristors 3 hängt von einem Regler 7 ab* beispielsweise von einem Regler, der in der oben genannten Patentanmeldung beschriebenen Art oder auch von einem Regler anderer Art und wird dadurch eingeleitet^ dass der Steuerelektrode 8 des Thyristors eine positive Spannung zugeführt wird. Der Stromdurchgang durch den Thyristor 3 erlischt bei der Unterdrückung des Stromes zur Steuerelektrode, wenn die Speisespannung den Nullwert durchläuft. Es wird also dann der Speisestrom des Ankers 1 unterbrochen.The ignition of the thyristor 3 depends on a controller 7 * for example from a controller of the type described in the above-mentioned patent application or from a controller of another type and is thereby initiated ^ that the control electrode 8 of the thyristor has a positive Voltage is supplied. The passage of current through the thyristor 3 is extinguished when the current to the control electrode is suppressed when the Supply voltage passes through the zero value. The feed current of the armature 1 is then interrupted.
Ein Unterbrecher 9 ist in den Kreis dieser Steuerelektrode 8 eingeschaltet und wird ebenfalls von der Programmsteuereinrichtung 6 bedient. Der Unterbrecher 9 unterbricht nur einen sehr schwachen Strom und brauchtAn interrupter 9 is connected to the circuit of this control electrode 8 and is also operated by the program control device 6. The breaker 9 interrupts only a very weak current and needs
809901/041 1809901/041 1
daher nur eine sehr geringe Schaltleistung zu besitzen.therefore to have only a very low switching capacity.
Die Nocken der Programmsteuereinrichtung sind so geformt, dass der Umschalter 2 erst nach der öffnung des Unterbrechers 9 und nach dem Erlöschen des Stromes im ersten Nulldurchgang der Speisespannung geöffnet wird. Da im Zeitpunkt der öffnung des Umschalters 2 der Strom also bereits unterbrochen ist, können die Umschalter kontakte sich ohne die Bildung von Funken befürchten zu müssen, langsam öffnen.The cams of the program control device are shaped in such a way that the changeover switch 2 is only activated after the interrupter 9 has been opened and after The current is extinguished in the first zero crossing of the supply voltage. Since at the time of the opening of the changeover switch 2 the current is already is interrupted, the changeover switches can make contacts without the formation of To fear sparks open slowly.
Ebenso werden die Umschalterkontakte für den Anlauf des Motors in der umgekehrten Drehrichtung geschlossen bevor der Unterbrecher 9 betätigt wird, d. h. vor der Zündung des Thyristors. Die Schliessung der Kontakte des Unterbrechers 2 geht also ebenfalls ohne Funkenbildung vor sich, so dass keine Abnutzung der Kontakte zu befürchten ist.Likewise, the changeover switch contacts for starting the motor in the reverse direction of rotation are closed before the breaker 9 is operated, d. H. before the thyristor fires. The closure of the The contacts of the interrupter 2 thus also take place without spark formation, so that there is no need to fear wear and tear on the contacts.
Die Synchronisierung der Bewegung des Unterbrechers 9 und des Umschalters 2 kann natürlich auch mit anderen Hilfsmitteln als mit Nockenscheiben der Programmsteuereinrichtung geschehen.The synchronization of the movement of the interrupter 9 and the changeover switch 2 can of course also be done with other means than with cam disks the program control device happen.
Ferner liegt auch die Benutzung von anderen gesteuerten Ventilen als Thyristoren innerhalb des Erfindungsgedankens.Furthermore, the use of other controlled valves than thyristors is also within the scope of the invention.
80 980 1/041 180 980 1/041 1
Claims (1)
schlossen und das VentilAerst dann wieder gezündet wird.Consequently
closed and valve A is only then ignited again.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR988768A FR1416470A (en) | 1964-09-21 | 1964-09-21 | Device for improving the contact resistance of DC motor control reversing switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1463049A1 true DE1463049A1 (en) | 1969-01-02 |
Family
ID=8838728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19651463049 Pending DE1463049A1 (en) | 1964-09-21 | 1965-09-10 | Circuit arrangement to increase the service life of the contacts of a changeover switch for direct current motors which are operationally reversed in their direction of rotation and which are fed via a controlled valve |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE669688A (en) |
| CH (1) | CH430844A (en) |
| DE (1) | DE1463049A1 (en) |
| FR (1) | FR1416470A (en) |
| GB (1) | GB1117007A (en) |
| NL (1) | NL6512193A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10108946A1 (en) * | 2001-02-23 | 2002-05-23 | Conti Temic Microelectronic | Electric motor control method e.g. for windows or roof in motor vehicle, using transistor to separate voltage source from switching contacts at switch-off point or shortly before |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2466849A1 (en) * | 1979-09-28 | 1981-04-10 | Koehler Gerard | EM relay for coupling to semiconductor relay - receives mercury globules in trough forming contacts with halves of toroidal magnetic circuit connected static relay |
| FR2655636B1 (en) * | 1989-12-07 | 1992-07-24 | Moulinex Sa | CONTROL DEVICE FOR A CAN OPENER. |
| GB0107354D0 (en) | 2001-03-23 | 2001-05-16 | Gunton Bruce S | Control arrangement |
| FR2860338B1 (en) * | 2003-09-30 | 2007-04-13 | Arvinmeritor Light Vehicle Sys | RELAY FOR DIRECT CURRENT ELECTRICAL APPARATUS |
-
1964
- 1964-09-21 FR FR988768A patent/FR1416470A/en not_active Expired
-
1965
- 1965-08-20 CH CH1195965A patent/CH430844A/en unknown
- 1965-09-10 DE DE19651463049 patent/DE1463049A1/en active Pending
- 1965-09-15 BE BE669688D patent/BE669688A/xx unknown
- 1965-09-20 NL NL6512193A patent/NL6512193A/xx unknown
- 1965-09-21 GB GB40277/65A patent/GB1117007A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10108946A1 (en) * | 2001-02-23 | 2002-05-23 | Conti Temic Microelectronic | Electric motor control method e.g. for windows or roof in motor vehicle, using transistor to separate voltage source from switching contacts at switch-off point or shortly before |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1117007A (en) | 1968-06-12 |
| NL6512193A (en) | 1966-03-22 |
| CH430844A (en) | 1967-02-28 |
| BE669688A (en) | 1965-12-31 |
| FR1416470A (en) | 1965-11-05 |
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