EP1847009A1 - Partie de reseau de distribution a alimentation de dispositifs independante du mode de fonctionnement de la partie d'alimentation - Google Patents

Partie de reseau de distribution a alimentation de dispositifs independante du mode de fonctionnement de la partie d'alimentation

Info

Publication number
EP1847009A1
EP1847009A1 EP06707889A EP06707889A EP1847009A1 EP 1847009 A1 EP1847009 A1 EP 1847009A1 EP 06707889 A EP06707889 A EP 06707889A EP 06707889 A EP06707889 A EP 06707889A EP 1847009 A1 EP1847009 A1 EP 1847009A1
Authority
EP
European Patent Office
Prior art keywords
auxiliary
windings
power supply
winding
voltage
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Withdrawn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
EP06707889A
Other languages
German (de)
English (en)
Inventor
Harald Schweigert
Martin Izaak
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.)
Siemens AG
Original Assignee
Siemens AG Oesterreich
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 Siemens AG Oesterreich filed Critical Siemens AG Oesterreich
Publication of EP1847009A1 publication Critical patent/EP1847009A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/10—Single-phase transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/005—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting using a power saving mode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02M3/33571—Half-bridge at primary side of an isolation transformer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/02—Adaptations of transformers or inductances for specific applications or functions for non-linear operation
    • H01F38/023—Adaptations of transformers or inductances for specific applications or functions for non-linear operation of inductances
    • H01F2038/026—Adaptations of transformers or inductances for specific applications or functions for non-linear operation of inductances non-linear inductive arrangements for converters, e.g. with additional windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs

Definitions

  • the invention relates to a switched-mode power supply, comprising a transformer with at least one secondary winding, which can be connected to a load via a rectifier arrangement and at least one primary winding, which has a first winding connection, which is connected via a switching element to a connection for a reference potential and another Connection which can be connected to a DC voltage, and a control device for controlling the on and off times of the switching element.
  • the invention also relates to a method for operating such a switching power supply.
  • Switching power supplies are well known. There are known to be those who work according to the flux converter principle and those who work as a flyback converter principle. In the latter, magnetic energy is stored during a storage phase by a current flowing through the primary winding of a transformer. This is discharged during a discharge phase after rectification and smoothing to a secondary side connected load. A switching element, which is in series with the primary winding of the transformer is switched on and off by a control device load-dependent.
  • This auxiliary transformer must have the same safety distances between the windings of the windings as the main transformer.
  • the size of this auxiliary transformer does not depend on the - to be transmitted - usually low - performance, but of the creepage distances. This inevitably results in relatively large structures with a corresponding space requirement on the layout and associated high costs.
  • the present invention is therefore based on the object for secondary-side devices of a switching power supply a provide power supply independent of the operating state of the power unit, without providing an additional auxiliary transformer.
  • the object is achieved by means of a switched-mode power supply according to claim 1.
  • the advantage thus achieved is in particular to use the transformer core present in the switched-mode power supply for the transmission of auxiliary power to supply additional, mostly secondary equipment, without affecting the function of the main supply.
  • the auxiliary power transmission thus realized is not influenced by the function of the main supply.
  • the auxiliary power transmission can also take place from the secondary side to the primary side of the power unit. Applications for this direction of transmission may be the need for low auxiliary voltages on the primary side of the power section (eg for charging batteries).
  • an additional internal base load can be eliminated by transmitting an auxiliary power via the auxiliary windings to the primary side of the power unit (eg to supply the control equipment).
  • auxiliary power can also be a simple standby operation of devices (eg TV sets) can be realized.
  • the power unit can remain switched off in standby mode and the required secondary-side auxiliary power is transmitted exclusively via the auxiliary windings.
  • the middle leg can have an air gap.
  • auxiliary primary winding onto two auxiliary primary windings connected in series and the auxiliary secondary winding to two auxiliary secondary windings connected in series and to arrange one of these auxiliary primary windings and one of these auxiliary secondary windings next to one another on a common outer leg of the core.
  • the distance between the auxiliary primary winding and the auxiliary secondary winding of an outer leg is minimized taking into account the creepage distances, whereby a good coupling with low transmission losses of the auxiliary energy is achieved.
  • step-down dividers are circuits which usually have a high-voltage switching transistor integrated and, according to the step-down converter principle from the intermediate circuit (eg 320 VDC with a mains voltage of 230 VAC), a potential-independent one
  • the primary supply voltage can already be ensured at values of the intermediate circuit voltage where the power transmission can not yet work. Therefore, when the minimum functional voltage of the power section is reached, the supply voltage will already be present.
  • These circuits usually have an output power of about 3-5 W.
  • the clocking auxiliary device on the primary side comprises a low voltage switching transistor, wherein the gate terminal is connected to the power output of a frequency generator and wherein the auxiliary primary windings with a winding terminal via the low voltage switching transistor to the reference potential and with the further connection to the supply voltage are connected.
  • the auxiliary secondary windings and the auxiliary primary windings are wound in the opposite direction, and the auxiliary rectifier arrangement connected to the auxiliary secondary windings is designed as a one-way rectifying circuit with a smoothing capacitor.
  • the frequency generator is fed by the primary supply voltage described above.
  • the low voltage switching transistor then switches the two auxiliary primary windings to the primary supply voltage in time with the frequency generator.
  • the transmission of the auxiliary energy takes place according to the principle of a flyback converter, which does not require any smoothing throttle.
  • the output voltage of the auxiliary power transmission according to the invention is determined as follows. On the one hand, the duty cycle of the primary auxiliary switching element is set by the frequency generator to a fixed value. The output voltage is then determined by the magnitude of the primary supply voltage and the turns ratio between the auxiliary primary windings and the auxiliary secondary windings and by the load at the output of the primary supply
  • Auxiliary supply determined. To catch the fluctuations while a longitudinal regulator can be followed.
  • the number of turns of the auxiliary windings is selected such that, on the one hand, the clock frequency of the auxiliary supply is a multiple (eg 6 times) of the clock frequency of the power section due to a low number of turns, and on the other hand, the undesirable temperature increase of the core due to a sufficient number of turns ( For example, four turns each on the primary and on the secondary side) is limited.
  • Another embodiment of the invention provides to form the clocking auxiliary device as a frequency generator, wherein the power output via a transistor pair and a
  • Coupling capacitor is connected to a winding terminal of the series-connected auxiliary primary windings. The further The winding connection of the auxiliary primary windings is then connected to the reference potential.
  • the auxiliary secondary windings and the auxiliary primary windings are wound in the same direction and the auxiliary rectifier arrangement connected to the auxiliary secondary windings is designed as a two-way rectifier with a smoothing capacitor.
  • the frequency generator can be designed as a switched-mode power supply control IC, which is fed by the primary supply voltage.
  • the gate drive signal of the IC is amplified with the transistor pair and passed over the coupling capacitor, thereby producing a push-pull voltage having no DC component.
  • the transmission of the auxiliary energy takes place according to the principle of a push-pull flow converter, which requires no smoothing chokes because of the peak charge.
  • the output voltage is determined by the magnitude of the primary supply voltage and the turns ratio between auxiliary primary windings and auxiliary secondary windings.
  • the duty cycle between the primary power and auxiliary circuit and the load at the output of the auxiliary supply has only a minor influence on the output voltage.
  • To intercept the small fluctuations can also be followed by a series regulator.
  • the invention provides to form the auxiliary windings as plastic-molded parts.
  • the necessary safety insulation is achieved to the windings of the power unit.
  • the isolation specification between Hilfssprimär- and auxiliary secondary winding can be easily met.
  • the interconnection of the respective auxiliary windings in series takes place on a printed circuit board.
  • a further embodiment for easy mounting of the auxiliary windings provides, the auxiliary primary windings and the auxiliary Form secondary windings and the connecting lines between the series-connected auxiliary windings as a uniform plastic-molded part.
  • the overlaps of the turns and connecting conductors and the connections of the auxiliary primary windings and secondary windings are arranged on the outer side facing away from the core in order to maximize the distance of the auxiliary windings to the windings of the power unit.
  • Such an embodiment has only four led out of the molding outlets, which are connected to the primary and the secondary side of the circuit. In the manufacture of the transformer this "clasp-shaped" molded part is to be placed on a core half prior to bonding the core halves.
  • auxiliary primary windings and the auxiliary secondary windings are configured as multicore ribbon cables in such a way that a first flat cable loop forms an auxiliary primary winding and an auxiliary secondary winding and a second ribbon cable loop forms a further auxiliary primary winding and is also favorable for the manufacture and installation of the auxiliary windings forms a further auxiliary secondary winding and each one of these ribbon cable loops are wound around the outer legs of the core, wherein the individual wires of the ribbon cables are connected to each other at the ends so that the wires for each auxiliary winding form whole turns around the outer limbs of the core and the auxiliary primary windings and the auxiliary secondary windings are in each case connected in series.
  • the advantage here is that, contrary to the embodiments described above, no investment in tools for plastic extrusion is necessary.
  • the ends of the ribbon windings forming the auxiliary primary windings and auxiliary secondary windings are fastened with their ends in insulation displacement bushes on a printed circuit board, wherein the individual wire ends of the flat ribbon cables are connected to complete turns via printed conductors on the printed circuit board.
  • the induction caused by the auxiliary windings additionally load the core, it may be favorable to connect the devices to be supplied on the secondary side of the transformer with both the auxiliary rectifier arrangement and with the rectifier arrangement of the power unit.
  • the circuit designed in this way made it possible to supply the secondary-side devices both by the auxiliary supply and by the voltage derived from the secondary side by the power unit.
  • the switched-mode power supply is then operated in such a way that the devices on the secondary side of the transformer are only supplied by the auxiliary voltage if the voltage at the output of the rectifier arrangement in the power unit is below the value required for the secondary equipment and if this value is exceeded secondary-side devices via the rectifier arrangement in
  • the auxiliary supply can then be switched off and there is no additional load on the core.
  • FIG. 1 a switching power supply with step-down divider
  • Fig. 2 an inventive switching power supply with independent auxiliary supply according to the principle of a flyback converter
  • FIG. 3 shows a switched-mode power supply according to the invention with independent auxiliary supply according to the principle of an antiphase flux converter
  • Fig. 4 the arrangement of the auxiliary windings on the core of the transformer
  • Fig. 5 the arrangement of the auxiliary windings formed from ribbon cable at the core of the transformer
  • Fig. 1 shows an exemplary arrangement of a switching power supply circuit including a step-down converter 1, which derives a supply voltage U 2 from a DC voltage U L in the intermediate circuit.
  • the DC voltage Ul in the DC link can be, for example, a rectified AC voltage.
  • a rectifier bridge for example, after smoothing out an alternating voltage of 230 V, 320 V DC voltage is produced as DC voltage U L in the DC link.
  • a primary winding 4 which is wound around the core 3, applied to this DC voltage Ul in the DC link.
  • the on and off times of the switching element 2 are controlled by a control device 6, which is connected to the base of the control element 2.
  • the control device 6 is supplied with the supply voltage U2.
  • the supply voltage U2 is the output voltage of the buck converter 1, which consists for example of the following elements:
  • An LNK switch 10 eg LNK 306, manufacturer Power Integrations
  • the output of the LNK switch 10, to which a freewheeling diode 11 is connected in parallel, is conducted via a smoothing inductor 12 and a subsequent smoothing capacitor 13.
  • Such circuits usually have an output power of 3-5 W.
  • the supply voltage U2 provided is, for example, 15 V.
  • a secondary winding 5 is wound around the core 3.
  • the DC connected to the secondary winding 5 Judge arrangement comprises a diode 8 and a smoothing capacitor 9.
  • the output voltage U3 is a smoothed DC voltage, with secondary-side devices 7 assuming additional control tasks (eg for temperature control).
  • FIG. 2 shows an embodiment of the independent auxiliary supply according to the invention, wherein the embodiment shown in FIG. 1 described circuit is supplemented by additional elements.
  • the supply voltage U2 for the auxiliary primary circuit corresponds to the supply voltage U2 for the control device 6 for controlling the switching element 2.
  • the supply voltage U2 for the auxiliary primary circuit can, however, also be derived from a completely independent source (not illustrated here).
  • the clocking auxiliary device 19 is arranged in series with the auxiliary primary windings 15 and 16, and is exemplified by a switching element 14, a frequency generator 20 and an intermediate resistor 22.
  • the frequency generator 20 eg, LMC 555
  • the switching element 14 may, for example, be a low-voltage transistor STN2NE10 from the manufacturer STM. Connected to the switching element 14 to the source terminal via a shunt resistor 28 to the reference potential of the DC link. The drain connection is applied to the supply voltage U2 via the two auxiliary primary windings 15 and 16.
  • the current through the output of the frequency generator 20 is monitored by a current detector circuit to turn off the output when set limit values are exceeded.
  • the current detector circuit is formed by the shunt resistor 28, to which a transistor 21 is connected in parallel with the base and collector terminals. In this case, the collector connection is connected to the reference potential of the intermediate circuit, and the emitter connection of the transistor 21 is connected to the output of the frequency generator 20 routed via the resistor 22.
  • the secondary-side auxiliary rectifier circuit consists of a diode 26 and a smoothing capacitor 27 and supplies as auxiliary output voltage U4 a smoothed DC voltage for supplying the secondary-side devices 7.
  • Fig. 3 shows a further exemplary embodiment of the independent auxiliary supply according to the invention.
  • the independent auxiliary supply according to the invention.
  • the base forms the supply of the primary auxiliary supply elements again takes place with the supply voltage U2, which, however, can also come from a completely independent source (not shown here).
  • the clocking auxiliary device 19 is again arranged in series with the auxiliary primary windings 15 and 16 and consists of a frequency generator 20 and a pair of transistors 30, 31.
  • the frequency generator 20 for example, a
  • Switching power supply IC type UC3842 connected to the supply voltage U2.
  • the gate drive signal of the frequency generator 20 is amplified by a pair of transistors 30 and 31 and then passed through a coupling capacitor 32.
  • the two series-connected auxiliary primary windings 15 and 16 are connected to this coupling capacitor 32 and to the reference potential of the intermediate circuit.
  • the series-connected auxiliary secondary windings 17 and 18 are wound in the same direction as the auxiliary primary windings 15 and 16 around the core 3 and connected to a two-way rectifier 29 with smoothing capacitor 27 (the winding starts are marked with a dot).
  • This push-pull current transformer does not require a smoothing choke because of the peak charge.
  • the secondary-side auxiliary output voltage U4 supplies the secondary-side devices 7, which are additionally connected to the rectifier arrangement in the power section.
  • the supply of the devices 7 then takes place via the power section, when the voltage at the output of the rectifier arrangement (U3) in the power section is above the value required for the secondary-side devices 7.
  • the current through the output of the frequency generator 20 is monitored.
  • the Is ENSE terminal of the frequency generator 20 is connected to the collector terminal of the second transistor 31 of the amplifying transistor pair 30, 31.
  • Collector terminal is connected via a shunt resistor 28 to the reference potential.
  • the core 3 of the transformer with the windings 4, 5, 15, 16, 17 and 18 is shown schematically. It is a three-limbed ferrite transformer in ETD design. To the center leg of the core 3 is inside the primary winding 4 and separated by an insulating layer about the secondary winding 5 of the power unit wound. The first auxiliary arm winding 15 is located next to the second auxiliary secondary winding 18. These two windings are connected via connecting lines to the auxiliary windings 16 and 17 arranged on the other outer leg, the auxiliary primary windings 15 and 16 being connected in series and the auxiliary secondary windings 17 and 18 are connected in series.
  • the winding sense of the auxiliary Windings 15, 16, 17 and 18 in the example shown construction corresponds to a flyback converter.
  • FIG. 4 the idealized course of the magnetic flow of the power unit .phi.L and the magnetic flux of the auxiliary power supply .phi.H can be seen.
  • the magnetic flux of the power section .phi.L runs in fired field lines through the center leg and branched off via the two outer limbs of the core 3.
  • the magnetic flux of the auxiliary supply .phi.JJ runs on the outside and thus superimposes itself in the outer leg with the magnetic flux of the power section .phi.L
  • Magnetic flow of the auxiliary supply ⁇ JJ by a variable current 12 flowing through the auxiliary primary windings 15 and 16.
  • FIG. 5 A core 3 with auxiliary windings 15, 16, 17 and 18 constructed from ribbon cable is shown in FIG. 5 shown schematically.
  • the primary winding 4 and above the secondary winding 5 of the power unit is mounted inside.
  • a first ribbon cable is made through the gap between the first outer leg and the winding on the middle leg.
  • Shown is a four-core ribbon cable, which is spliced at both ends in two times two wires. Two of these wires now form two turns of the first auxiliary primary winding 15 by a series connection on a printed circuit board 33. The two cores running next to them are also connected on the printed circuit board 33 to form two turns of the second auxiliary secondary winding 18.
  • the interconnection of the wires on the circuit board 33 is effected by conductor tracks, which are contacted via ribbon cable connector 34 with the wires of the specialist ribbon cable.
  • the exemplary representation is four 4-pin connectors (for example, IDT sockets, Molex).

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne une partie de réseau de distribution, comprenant un transformateur qui comporte au moins un enroulement secondaire (5) pouvant être raccordé à une charge par l'intermédiaire d'un système de redresseur, ainsi qu'au moins un enroulement primaire (4), qui présente une première connexion d'enroulement reliée à une borne de potentiel de référence par l'intermédiaire d'un élément de commutation (2) et une autre borne, pouvant être reliée à une tension continue (U1), ainsi qu'un dispositif de commande (6) pour réguler les temps d'enclenchement et de déconnexion de l'élément de commutation (2). Il est prévu, pour alimenter des dispositifs (7) de manière indépendante, au moins un enroulement secondaire auxiliaire (17) du transformateur, qui peut être raccordé aux dispositifs à alimenter (7), par l'intermédiaire d'un système de redresseur auxiliaire, ainsi qu'un dispositif auxiliaire (19) à effet de synchronisation pour produire un courant synchronisé (I2) à partir d'une source de courant continu et au moins un enroulement primaire auxiliaire (15) du transformateur, qui est raccordé à la source de courant continu synchronisée. L'invention se caractérise en ce qu'elle présente comme avantage d'utiliser le noyau du transformateur (3), présent dans la partie de réseau de distribution, également pour transmettre l'énergie auxiliaire pour alimenter des dispositifs côté secondaire (7), sans influer sur la fonction de l'alimentation principale.
EP06707889A 2005-02-10 2006-01-30 Partie de reseau de distribution a alimentation de dispositifs independante du mode de fonctionnement de la partie d'alimentation Withdrawn EP1847009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005006175A DE102005006175A1 (de) 2005-02-10 2005-02-10 Schaltnetzteil mit vom Betriebszustand des Leistungsteils unabhängiger Versorgung von Einrichtungen
PCT/EP2006/050510 WO2006084797A1 (fr) 2005-02-10 2006-01-30 Partie de reseau de distribution a alimentation de dispositifs independante du mode de fonctionnement de la partie d'alimentation

Publications (1)

Publication Number Publication Date
EP1847009A1 true EP1847009A1 (fr) 2007-10-24

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EP06707889A Withdrawn EP1847009A1 (fr) 2005-02-10 2006-01-30 Partie de reseau de distribution a alimentation de dispositifs independante du mode de fonctionnement de la partie d'alimentation

Country Status (3)

Country Link
EP (1) EP1847009A1 (fr)
DE (1) DE102005006175A1 (fr)
WO (1) WO2006084797A1 (fr)

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