EP0837382B1 - Dispositif pour le réglage d'une tension - Google Patents

Dispositif pour le réglage d'une tension Download PDF

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Publication number
EP0837382B1
EP0837382B1 EP19960116904 EP96116904A EP0837382B1 EP 0837382 B1 EP0837382 B1 EP 0837382B1 EP 19960116904 EP19960116904 EP 19960116904 EP 96116904 A EP96116904 A EP 96116904A EP 0837382 B1 EP0837382 B1 EP 0837382B1
Authority
EP
European Patent Office
Prior art keywords
voltage
control unit
electronic control
loads
current
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.)
Expired - Lifetime
Application number
EP19960116904
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German (de)
English (en)
Other versions
EP0837382A1 (fr
Inventor
Peter Sewerin
Klaus Anders
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.)
Siebe Appliance Controls GmbH
Original Assignee
Siebe Appliance Controls GmbH
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 Siebe Appliance Controls GmbH filed Critical Siebe Appliance Controls GmbH
Priority to DE59607176T priority Critical patent/DE59607176D1/de
Priority to EP19960116904 priority patent/EP0837382B1/fr
Publication of EP0837382A1 publication Critical patent/EP0837382A1/fr
Application granted granted Critical
Publication of EP0837382B1 publication Critical patent/EP0837382B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/577—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices for plural loads

Definitions

  • the invention relates to a device for regulating the voltage on a power supply line via which several consumers controlled by means of an electronic control unit be fed, the energy consumption of each Consumer varies depending on its operating condition.
  • From US-A-4 506 144 is a power control for heating elements known whose performance is regulated independently can be.
  • the performance can be set to a given one Setpoint regardless of fluctuations in the supply voltage be managed.
  • a regulation of the supply voltage itself is not provided. This known regulation is in their Manufacturing relatively complex and not for very simple Supply devices suitable, the total power consumption plays no role in the known device.
  • Control unit The electronic one to control the consumer anyway Control unit is used at the same time, which on the Voltage supply line to regulate the primary voltage. No additional circuitry is required. At the same time this reduces the manufacturing costs for voltage regulation.
  • the control of the energy consumption of a takes place expediently respective consumer by the effective time in which the current through a respective consumer flows.
  • By regulating energy consumption via the Time it is possible to both the voltage on the power supply line as well as the effective total current to keep all consumers constant.
  • the effective current of all consumers is advantageous regulated to a constant value.
  • the effective current can thus be set to a given as required Value to be regulated. This can vary depending on the application to the voltage to be regulated on the voltage supply line and adapted to related components.
  • the primary voltage can be used to supply a Serve DC voltage regulator, the one at its output Secondary voltage to supply the electronic control unit supplies. Because the on the power supply line applied primary voltage regulated to a certain value it can be used to supply the DC voltage regulator be used, which is simple and inexpensive can be trained.
  • the electronic control unit additional data signals for data-dependent control of the Consumers are fed. These signals can For example, commands that represent the states of the control consumer.
  • the electronic control unit can Microprocessor included. Through a microprocessor the electronic control unit inexpensive and extremely flexible in their function.
  • controllable switch can be operated to the To control current flow through the respective consumer.
  • at least one controllable switch can be used as a semiconductor switch, in particular as a transistor his.
  • a bipolar transistor comes as the transistor into consideration.
  • Via such a semiconductor switch can the electronic control unit by means of a relatively low output current Control higher current in the load circuit, for example the current through the coil of a relay.
  • measuring voltage by the Division of the primary voltage formed on a voltage divider is. Measuring voltage and primary voltage are included proportional to each other, the range of values being the Measuring voltage over the simple, inexpensive means of Voltage divider is adjustable.
  • An inventive device for controlling the Voltage on a power supply line 1 is used for example in electric stoves. Both connected to the power supply line 1 Consumers 2 to 5 are heating devices, for example for stovetops or ovens and others on Cooker intended consumers 2 to 5. Basically, this is Device, however, in any other electrical Devices can be used.
  • FIG. 1 shows an embodiment of such a device.
  • a supply plug 6 is for feeding the Device with the phase and the neutral conductor of the usual energy supply network in a building connectable.
  • Such an energy supply network is usually used with 220 volts / 50 Hz alternating voltage operated.
  • the phase pole of the supply plug 6 is via a series resistor 7 and a rectifier diode 10 connected to the voltage supply line 1, which via a first smoothing capacitor 11 with the neutral conductor pole connected, which serves as an internal ground, which is marked with the symbol GND.
  • the potential on the voltage supply line 1 is referred to below as the primary voltage U P.
  • the voltage supply line 1 is also connected to a first input 12 'of a known DC voltage regulator 12, the second input 12''of which is connected to the internal ground GND.
  • a first blocking capacitor 15 is interposed between the first input 12 'and the second input 12''of the DC voltage regulator 12.
  • the DC voltage regulator 12 supplies a secondary voltage U S. This is connected via a secondary voltage line 16 to a first supply input 17 'of an electronic control unit 17 designed as a microcomputer (.mu.C). A second supply input 17 ′′ of the electronic control unit 17 is connected to the internal ground GND. A second blocking capacitor 20 is connected in parallel with the supply inputs 17 ′, 17 ′′ of the electronic control unit 17.
  • the Secondary voltage line 16 At the output of the DC voltage regulator 12 is the Secondary voltage line 16 via a second smoothing capacitor 21 connected to the internal ground GND.
  • a measuring line 22 is also connected to the voltage supply line 1 and connects this voltage supply line 1 to the internal ground GND via a voltage divider 25.
  • the voltage divider has a series connection of a first voltage divider resistor 26 and a second voltage divider resistor 27, the first voltage divider resistor 26 being connected to the measuring line 22 and the second voltage divider resistor 27 being connected to the internal ground GND.
  • a measurement voltage U M is applied to the center tap 28 of the voltage divider 25 and is supplied to a measurement input 29 of the electronic control unit 17.
  • the electronic control unit 17 has in the exemplary embodiment 1 four outputs 30-33, each via an output resistor 34-37 with an as Transistor-designed controllable switch 38-41 are connected.
  • Each of the switches 38-41 is included one of the consumers 2-5 in series between the power supply line 1 and the internal ground GND switched. 1, the consumers are 2-5 (here are four Consumer 2 shown, this number is self-evident can vary) on the one hand on the power supply line 1 and on the other hand via a respective controllable switch 38-41 on the internal Ground GND.
  • FIG. 1 two input plugs are still dash-dotted 42, 43 shown, each via a series connection an input resistor 44, 45 and one Input diodes 46, 47 rest on input lines 48, 49. These are via voltage limiting diodes 51, 52 with the Secondary voltage line 16 connected and still over a low pass circuit 55, 56 to the internal ground GND created. Each input line 48, 49 is also on a control input 57, 58 of the electronic control unit 17 connected.
  • This is dash-dotted shown input connector 42, 43 including their respective wiring are basically for the function the device for regulating a voltage is not necessary. They can therefore also be omitted and used just to explain the possibility of multiple Exploitation of the control unit 17.
  • the consumer 2-5 is controlled via the Outputs 30-33 of the electronic control unit 17. By corresponding output signals at these outputs 30-33 the associated controllable switches 38-41 be closed or opened to the assigned Switch consumers 2-5 on or off.
  • the consumers 2-5 one relay 59-62 each with a parallel freewheeling diode 63-66, with the cathode of the freewheeling diode 63-66 with the power supply line 1 is connected.
  • the Relays 59-62 are only represented by their relay coils.
  • the associated relay contacts, not shown serve to switch the rest of the also not shown consumer.
  • the primary voltage U P is kept constant by switching the consumers 2-5 apart from certain small control deviations.
  • the electronic control unit 17 is supplied with the measuring voltage U M which changes in proportion to the primary voltage U P at the measuring input 29. Via its outputs 30-33, the electronic control unit 17 can regulate the energy consumption in the consumers 2-5 that are switched on via the controllable switches 38-41 in such a way that the total energy consumption with respect to all consumers 2-5 always remains constant. If, for example, a consumer 2-5 is switched off, the input current I E flowing through the series resistor 7 drops at this time. As a result, the dropping voltage U V dropping across the dropping resistor 7 also drops. This means that the primary voltage U P rises. The electronic control unit 17 registers this rise via the measuring voltage U M and increases the effective current consumption of the consumers 2-5 that are still switched on. The series resistor voltage U V rises again, whereby the primary voltage U P becomes lower.
  • the effective time in which a current flows through the respective consumer 2-5 is increased.
  • the consumer is clocked 2-5 by means of the controllable switch 38-41, that is to say alternately switched on and off.
  • a clock voltage U T present between this consumer and the associated controllable switch 38 is shown by way of example in FIG. 2.
  • the relays 59-62 need to tighten the relay contact a much higher energy than to hold of this contact.
  • the suit energy in be about four times higher than the holding energy.
  • the clock voltage U T according to FIG. 2 applied to the switching path of the switch 38 assumes the maximum value U TA when the consumer 2 is switched off, that is to say when the switch 38 is open.
  • the controllable switch 38 is closed and the clock voltage U T drops to its minimum value U TE .
  • This minimum clock voltage U TE is now held at least so long that the relay 59 of the consumer 2 can pick up.
  • the time that the switch 38 remains closed is referred to as the tightening time t A. Accordingly, the switch opens again after the time t 0 + t A.
  • the clock voltage U T increases to its maximum value U TA . No current now flows through the assigned consumer 2.
  • the pulse that triggered the pull-in of relay 59 at time t 0 and was present during pull-in time t A is referred to as pull-in pulse 67.
  • the controllable switch 38 is excited by the electronic control unit 17 in a so-called basic cycle 68. That is, the switch 38 is closed periodically during a switch-on time t E and then opened again. The period of the basic cycle is marked with T G.
  • the switch-on time t E and the period of the basic cycle T G have to be determined depending on the application and have a ratio of 1: 4 in FIG. 2.
  • the basic cycle 68 is coordinated so that the relay 59 of the consumer 2 can absorb the necessary holding energy.
  • This basic cycle 68 is continuously generated by the electronic control unit 17 when the consumer 2 is switched on by means of the controllable switch 38.
  • the electronic control unit 17 also generates the tightening pulse 67 cyclically. From Fig. 2 it can be seen that after a cycle time T Z again a pick-up pulse 67 occurs.
  • the width of a respective tightening pulse 67 is characterized by the tightening time t A.
  • An increase in the pull-in time t A has the consequence that the effective energy consumption or the effective current consumption of the consumer increases 2-5.
  • a reduction in the tightening time t A results in a lower effective energy or current consumption by the consumer 2-5.
  • a corresponding reduction in the pull-in time t A causes a reduced current or energy consumption by the consumer 2 and thus an increase in the primary voltage U P.
  • the cycle time T Z could also be changed instead of the variation of the tightening time t A. If the pick-up pulse 67 is generated less often per unit of time, that is to say the cycle time T Z is increased, the current or energy consumption of the consumer 2 decreases. In contrast, to increase this, the cycle time T Z would have to be reduced.
  • the primary voltage U P which is constantly regulated in this way, is used in FIG. 1 to supply the DC voltage regulator 12.
  • the first blocking capacitor 15 is connected, which compensates for slight fluctuations in the primary voltage U P.
  • the DC voltage regulator 12 supplies the secondary voltage U S , which in turn serves to supply the electronic control unit 17.
  • the second blocking capacitor 20 located between the inputs 17 ′ and 17 ′′ also ensures that the electronic control unit 17 is constantly supplied, since it compensates for fluctuations in the secondary voltage U S.
  • Both the blocking capacitors 15, 20 and the second smoothing capacitor 21 ensure an improved function of the device. With a sufficiently secured and constant primary voltage U P or secondary voltage U S , these capacitors could also be omitted.
  • the controllable switches 38-41 are in the exemplary embodiment 1 as transistors formed as Bipolar transistors 69-72 are formed.
  • the emitter of a respective bipolar transistor 69-72 is with the internal ground GND connected. His respective collector is connected to the assigned consumer 2-5.
  • the Base of each bipolar transistor 69-72 is over a respective output resistance 34-37 from the controlled electronic control unit 17. Serve the output resistors 34-37 of the output current limit at the outputs 30-33 of the electronic control unit 17.
  • the electronic control unit 17 may be necessary for the electronic control unit 17 additional data signals to control the consumers 2 needed. For example, it can be these data signals for commands to switch on or off of a respective consumer.
  • Such data signals are indicated by the dash-dotted input connector 42, 43 fed into the device.
  • the Input resistors 44, 45 serve to limit the input current.
  • the input diodes 46, 47 indicate the current direction in front. That means that about a respective Input line 48. 49 no current towards the input connector 42, 43 can flow.
  • the to the input connector 42, 43 connected, not shown This protects components or lines. Too with higher-frequency data signals, which are via the input lines 48, 49 to the electronic control unit 17 to avoid harmonics is one respective input line 48, 49 with a low-pass circuit 55, 56 connected. This excludes high-frequency Harmonics and voltage peaks briefly, so that the over Input lines 48, 49 transmitted data signals be filtered.
  • the low-pass circuits 55, 56 are in the embodiment 1 from a parallel connection a respective low pass resistor 74, 75 and a low pass capacitor 76, 77 formed. Basically here would be any other low-pass circuit 55, 56 can be used.
  • Voltage limiting diodes 51, 52 are used to limit the voltage at the data inputs 57, 58 of the electronic control unit 17.
  • the cathodes of these voltage limiting diodes 51, 52 are at the potential of the secondary voltage U S. If the voltage on the input lines 48, 49 rises above the value of the secondary voltage U S , the voltage limiting diodes 51, 52 become conductive.
  • ZENER diodes could also be used as voltage limiting diodes 51, 52, the so-called ZENER voltage being selectable in wide ranges depending on the diode type.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Control Of Electrical Variables (AREA)

Claims (12)

  1. Dispositif de régulation de la tension sur une ligne (1) d'alimentation en tension, par laquelle sont alimentés plusieurs récepteurs (2 à 5) commandés au moyen d'une unité de commande électronique (17), la consommation d'énergie de chaque récepteur (2 à 5) variant en fonction de son état de fonctionnement, caractérisé en ce qu'un courant d'entrée (IE) est amené à la ligne (1) d'alimentation en tension, par l'intermédiaire d'une résistance série (7), et en ce que l'unité de commande électronique (17) exploite une tension de mesure (UM), qui varie proportionnellement à la tension primaire (UP) qui s'applique à la ligne (1) d'alimentation en tension, et commande, par synchronisation, la consommation d'énergie des récepteurs (2 à 5) en marche selon le cas, de manière que la tension primaire (UP) soit sensiblement constante, l'un au moins des récepteurs (2 à 5) étant en marche.
  2. Dispositif selon la revendication 1, caractérisé en ce que la commande de la consommation d'énergie de chaque récepteur (2 à 5) s'effectue par le temps effectif pendant lequel le courant traverse chaque récepteur (2 à 5).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le courant effectif de tous les récepteurs (2 à 5) est réglé sur une valeur constante.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les récepteurs (2 à 5) contiennent au moins un relais de commande (59 à 62) dont les bobines peuvent recevoir la tension primaire (UP) pour fermer les contacts du relais.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la tension primaire (Up) sert en outre à alimenter un régulateur à tension continue (12), qui fournit à sa sortie une tension secondaire (US) destinée à alimenter l'unité de commande électronique (17).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que l'unité de commande électronique (17) reçoit des signaux de données supplémentaires pour la commande des récepteurs (2 à 5), en fonction des données.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'unité de commande électronique (17) contient un microprocesseur (µC).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que, pour la commande des récepteurs (2 à 5), des interrupteurs (38 à 41), qui peuvent être commandés par des sorties (30 à 33) associées de l'unité de commande électronique (17), peuvent être actionnés pour commander le flux de courant à travers le récepteur (2 à 5) concerné.
  9. Dispositif selon la revendication 8, caractérisé en ce qu'au moins un interrupteur (38 à 41) commandable est conformé en interrupteur à semi-conducteurs.
  10. Dispositif selon la revendication 9, caractérisé en ce que l'interrupteur à semi-conducteurs est formé par un transistor, notamment un transistor bipolaire (69 à 72).
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que la tension de mesure (UM) est formée par la division de la tension primaire (UP) dans un diviseur de tension (25).
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que les récepteurs (2 à 5) sont des dispositifs de chauffage pour des plaques de cuisinière et/ou des fours de cuisson.
EP19960116904 1996-10-21 1996-10-21 Dispositif pour le réglage d'une tension Expired - Lifetime EP0837382B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59607176T DE59607176D1 (de) 1996-10-21 1996-10-21 Vorrichtung zur Regelung einer Spannung
EP19960116904 EP0837382B1 (fr) 1996-10-21 1996-10-21 Dispositif pour le réglage d'une tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19960116904 EP0837382B1 (fr) 1996-10-21 1996-10-21 Dispositif pour le réglage d'une tension

Publications (2)

Publication Number Publication Date
EP0837382A1 EP0837382A1 (fr) 1998-04-22
EP0837382B1 true EP0837382B1 (fr) 2001-06-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960116904 Expired - Lifetime EP0837382B1 (fr) 1996-10-21 1996-10-21 Dispositif pour le réglage d'une tension

Country Status (2)

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EP (1) EP0837382B1 (fr)
DE (1) DE59607176D1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506144A (en) * 1982-07-19 1985-03-19 Cincinnati Milacron Inc. Control for radiant heating
US4641233A (en) * 1985-05-03 1987-02-03 Eaton Corporation AC to DC converter with voltage regulation
DE3725348A1 (de) * 1987-07-30 1989-02-09 Nixdorf Computer Ag Schaltungsanordnung einer spannungsquelle mit vorgebbaren werten der quellenspannung und des innenwiderstandes
DE4234421A1 (de) * 1992-10-13 1994-04-14 Bosch Gmbh Robert Vorrichtung zur stromgeregelten Steuerung mehrerer Stellglieder mittels eines Steuercomputers

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Publication number Publication date
EP0837382A1 (fr) 1998-04-22
DE59607176D1 (de) 2001-08-02

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