EP2357657B1 - Agencement inductif - Google Patents

Agencement inductif Download PDF

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Publication number
EP2357657B1
EP2357657B1 EP11001711.8A EP11001711A EP2357657B1 EP 2357657 B1 EP2357657 B1 EP 2357657B1 EP 11001711 A EP11001711 A EP 11001711A EP 2357657 B1 EP2357657 B1 EP 2357657B1
Authority
EP
European Patent Office
Prior art keywords
winding
inductance
current
main
primary conductor
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.)
Active
Application number
EP11001711.8A
Other languages
German (de)
English (en)
Other versions
EP2357657A3 (fr
EP2357657A2 (fr
Inventor
Bernhard Schneider
Thomas Uhl
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.)
SEW Eurodrive GmbH and Co KG
Original Assignee
SEW Eurodrive GmbH and Co KG
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
Priority claimed from DE200810024602 external-priority patent/DE102008024602B4/de
Application filed by SEW Eurodrive GmbH and Co KG filed Critical SEW Eurodrive GmbH and Co KG
Publication of EP2357657A2 publication Critical patent/EP2357657A2/fr
Publication of EP2357657A3 publication Critical patent/EP2357657A3/fr
Application granted granted Critical
Publication of EP2357657B1 publication Critical patent/EP2357657B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • 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
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias
    • 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
    • H01F38/14—Inductive couplings
    • H01F2038/146—Inductive couplings in combination with capacitive coupling
    • 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
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F29/146—Constructional details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps

Definitions

  • the invention relates to an arrangement.
  • a system for inductive transmission of energy wherein a medium frequency current is fed to a primary conductor system, where the primary conductor system is designed as an elongated conductor loop. Consumers are supplied from secondary coils, which are inductively coupled to the primary conductor system.
  • the invention is therefore based on the object to develop a system with inductors.
  • Important features of the arrangement are that it is intended for non-contact energy transmission, with a medium-frequency current being fed into an elongated primary conductor system, wherein consumers are supplied from a secondary coil inductively coupled to the primary conductor system, wherein the secondary coil is connected in series or in parallel with such a capacitance that the associated resonant frequency substantially corresponds to the center frequency, in particular between 10 and 500 kHz, of the current, wherein a controllable inductance is provided
  • a resonant circuit part such as a resonant circuit, a gyrator, or even a transformer can be regulated to a desired value.
  • the inductance is the secondary coil.
  • the advantage here is that even with a quadrupole such as transformer or the like, the inductance is controllable.
  • the inductance is provided in a gyrator.
  • the advantage here is that the gyrator is adjustable to the desired desired frequency response
  • the inductance is so connected to the inductance of the primary conductor system and such a capacitance is in operative connection with the primary conductor system, that the associated resultant resonant frequency is tuned to the center frequency.
  • the capacitance is arranged in a gyrator arrangement feeding the primary conductor system directly or via a transformer and / or the capacitance is connected in series or in parallel to the inductor connected to the inductance of the primary conductor system.
  • the advantage here is that the vote of the primary conductor system is also executable by means of the controllable inductance.
  • the controllable inductance is connected in series with the primary conductor, ie the inductance of the primary conductor.
  • the capacitance provided for achieving the resonance is provided within the gyrator arrangement, from which the primary conductor system is supplied via a transformer.
  • a regulator circuit is provided, whose input is provided with a means for detecting the relative phase position between a voltage and a current, in particular wherein the current is the primary current, and whose output is connected to the controllable inductance as an actuator.
  • the advantage here is that an automatic control is providable, which tracks the value of the resonant frequency even when changing physical parameters by controlling the controllable inductance to the desired value.
  • the inductance comprises a main winding, which is embodied around at least one leg of a core, wherein the main winding is supplied with alternating current, wherein a control winding is provided on at least one leg of the core, which is subjected to unipolar current.
  • the advantage here is that the value of the inductance is variable to a desired setpoint and tuned.
  • the advantage here is that the induced voltage remains low and yet a field can be generated, which magnetizes the core of the main coil, in particular as a constant field, ie constant field.
  • control winding is designed such that in each case a corresponding number of turns of the other portion is executed alternately after execution of a first number of turns of a portion, in particular wherein the number assumes a value between 1 and 10.
  • the advantage here is that the voltage induced in the first turns voltage remains low and thus the insulation must be performed only against low voltages.
  • a supply winding on at least one leg of the core is provided, are connected to the means for generating the unipolar current, in particular wherein the means of the induced voltage, in particular secondary voltage, the supply winding are supplied.
  • the means for generating the unipolar current comprise a controllable arrangement, such as DC / DC converters, power switches and / or controllable resistance.
  • a controllable arrangement such as DC / DC converters, power switches and / or controllable resistance.
  • the core has an air gap S, which is penetrated in the main flow generated by the main winding, wherein the of the respective
  • Partial windings generated flows are essentially passed through areas of the core without an air gap.
  • the advantage here is that only a small control current is necessary, with which the saturation of the area is allowed, which is penetrated by the main flow of the partial windings.
  • the air gap is arranged only in that region of the core which is penetrated essentially exclusively by the main flow of the main winding, whereby the steepness of the magnetization characteristic curve for the main winding can be reduced.
  • control signals for controlling the contactless and / or galvanically isolated transmitted.
  • the advantage here is that no additional effort for galvanic isolation must be operated. Also, it simply allows the control electronics connected to the control coil to operate at a different potential.
  • the means are provided as a control element of a control circuit and connected thereto.
  • the advantage here is that the value of the control current is adjustable, in particular so to a target value.
  • FIG. 1 is the main winding with the inductance L shown with the terminals E1 and A1.
  • the control winding L2 with the terminals E2 and A2 and the supply winding L3 with the terminals E3 and A3 are provided.
  • the winding of the main winding L is supplied with an alternating current, whereby a voltage is provided to the inductively coupled supply winding ready, which is supplied to a rectifier.
  • the rectified voltage is optionally smoothed with a capacitor and is then fed to a switching element 1, wherein this is operated clocked, for example, pulse width modulated.
  • a switch encompassed by the switching element for example, a controllable power semiconductor switch is closed in each clock period for a first period and opened in a subsequent period.
  • the current flowing through the control winding L2 current is controllable.
  • the time average thus flows a direct current through the control coil L2, whereby thus the core of the main winding undergoes a corresponding magnetization. It is important that the magnetization of the core is not a linear function of the magnetic field generated by the current, but even changes to a saturation behavior for larger current values.
  • the effective inductance L of the main winding is variable depending on the impressed in the control winding current.
  • the control signals for the switching element 1 are contactless and even galvanically separated transferable.
  • an optocoupler on the switching element 1 is provided for this purpose, which is in operative connection with a central control, not shown in the figure.
  • the associated frequency is greater than the center frequency of the current fed into the primary conductor, that is, the current component which is important for the power supply.
  • the high-frequency current component can also be detected by means of the supply coil and can therefore be decoupled from the supply current component in the switching element.
  • control signals only information can be transmitted in further exemplary embodiments according to the invention, wherein an electronic circuit for generating the control signals is then included in the switching element.
  • ferrite materials As a material for the production of the core are suitable ferrite materials or other ferromagnetic or ferrimagnetic materials.
  • the arrangement according to the invention can be used in a system for contactless energy transmission, in which an elongated laid primary conductor is provided, into which a medium-frequency current is impressed, in particular with a frequency between 10 and 500 kHz.
  • the load which can be moved along the primary conductor has a secondary coil, which is inductively coupled to the primary conductor and to which such a capacitance is connected in series or in parallel, so that the associated resonant frequency substantially corresponds to the center frequency.
  • the main winding of the arrangement according to the invention can be used as a secondary winding and the inductance can be changed by means of the current in the control winding, that is to say the resonance frequency can be regulated or tuned to the center frequency.
  • a converter is used whose output stage is supplied from a unipolar voltage, the so-called intermediate circuit voltage, which is generated by a mains-fed rectifier.
  • the output stage comprises half bridges, which each comprise two series-connected pulse-width-modulatedly controlled power semiconductor switches.
  • a medium-frequency voltage can be generated, which is used to power a Gyratoran Aunt is used.
  • a medium-frequency current source which is provided for feeding a primary conductor loop, is produced from the voltage source realized by means of the output stage, wherein the primary conductor loop comprises the primary conductor.
  • a quadrupole which comprises at least one inductance and at least one capacitance, wherein the values of these variables are selected such that the associated resonant frequency essentially corresponds to the center frequency.
  • an arrangement according to the invention can again be used as the inductance, so that the inductance can be tuned to the optimum value or subsequently regulated.
  • aging, moisture, weather, temperature or otherwise caused deviations or drifts in the values can thus be compensated for and / or readjusted.
  • a transformer can be arranged, which is suitable for adapting the inductance. Also for its inductances, the arrangement according to the invention can be used to perform this tunable.
  • the elongated laid primary conductor is connected in total a capacity in series, so that the associated resonant frequency is tuned to the center frequency.
  • an inductance can also be assigned to the tuning, for example in series, whereby this can be implemented as an arrangement according to the invention and thus a tuning to the resonant frequency is made possible.
  • the components mentioned can therefore be equipped with inductors controllable according to the invention and thus tunable to the desired setpoint values.
  • a controllable resistor R is provided which thus determines the value of the main inductance. The way it works is the FIG. 1 executed accordingly.
  • FIG. 3 is instead of the controllable switching element 1 of FIG. 1 a controllable DC / DC converter provided.
  • the way it works is the FIG. 1 executed accordingly.
  • the duty cycle or the duty cycle ⁇ thus determine the inductance.
  • the main winding L is wound around the first E-shaped core 2 and has the terminals E1 and A1.
  • the second E-shaped core provided for closing the magnetic flux issuing from the first E-shaped core has the supply winding L3 about its center leg, the terminals being denoted by E3 and A3.
  • the control winding L2 is embodied in two partial windings, wherein the first part winding is provided in the right main leg and the second part winding in the left main leg.
  • the winding sense of the two partial windings are designed in opposite directions.
  • the flux generated by the main winding L transits from the main leg of the first E-shaped core 2 into the main leg of the second E-shaped core 3 and then divides into two halves, the first in the first main leg and the second half in the second main leg flows.
  • the field generated by the first partial winding of the control winding L2 in the first main leg is added to the flux component generated by the main winding and the field generated by the second partial winding of the control winding L2 is subtracted in the second main leg to the flux component generated by the main winding.
  • a control of the inductance for the positive half-wave of the provided in the main winding L alternating current in the same manner as for the negative half-wave executable.
  • the winding of the control winding is designed such that after a first turn of the first partial winding, the first turn of the second partial winding is carried out with the winding sense described above. Thereafter, a turn of the first partial winding is again carried out and continued by further alternating the execution of a turn of the respective partial winding.
  • the E-shaped cores are rotationally symmetrical about their center leg around and thus have the in the FIG. 4 shown E-shaped cross section.
  • the center leg includes a gap, so an air gap.
  • the main legs are designed without an air gap and thus the smallest possible control power necessary. In the main field lines generated by the control winding so no air gap is present and thus only a small control current necessary, so only a small control performance. Even the small stream has a big impact.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)

Claims (9)

  1. Agencement pour la transmission d'énergie sans contact, dans lequel un courant à moyenne fréquence est injecté dans un système de conducteurs primaires étendu en longueur,
    dans lequel des consommateurs sont alimentés par une bobine secondaire couplée par induction avec le système de conducteurs primaires,
    dans lequel une capacité est branchée en série ou en parallèle avec la bobine secondaire de telle sorte que la fréquence de résonance associée corresponde sensiblement à la moyenne fréquence du courant, en particulier soit comprise entre 10 et 500 kHz,
    caractérisé en ce
    qu'une inductance commandable (L) est prévue,
    l'inductance (L) comprenant un enroulement principal qui est réalisé autour d'au moins une branche d'un noyau (2, 3),
    l'enroulement principal étant soumis à un courant alternatif,
    un enroulement de commande, qui est soumis à un courant unipolaire, étant prévu sur au moins une branche du noyau (2, 3),
    l'enroulement de commande comportant au moins deux enroulements partiels dont le sens d'enroulement est réalisé de telle sorte
    - que la direction du flux principal généré dans la zone englobée par la première zone partielle de l'enroulement de commande corresponde à la direction du flux généré par l'enroulement principal dans cette zone lorsqu'il est soumis à un courant positif,
    - et que la direction du flux principal généré dans la zone englobée par la deuxième zone partielle de l'enroulement de commande corresponde à la direction du flux généré par l'enroulement principal dans cette deuxième zone, donc dans la zone englobée par la deuxième zone partielle de l'enroulement de commande, lorsqu'il est soumis à un courant négatif,
    l'enroulement de commande étant réalisé de façon que, chaque fois en alternance, après réalisation d'un premier nombre de tours d'une zone partielle, un nombre correspondant de tours de l'autre zone partielle soit réalisé, ledit nombre prenant une valeur comprise entre 1 et 10,
    un enroulement d'alimentation étant prévu sur au moins une branche du noyau (2, 3), auquel sont reliés des moyens pour générer le courant unipolaire, les moyens étant alimentés par la tension induite, donc en particulier la tension secondaire, de l'enroulement d'alimentation,
    l'enroulement principal L étant enroulé autour d'un premier noyau en forme de E (2),
    un deuxième noyau en forme de E (3) prévu pour fermer le flux magnétique sortant du premier noyau en forme de E (2) présentant l'enroulement d'alimentation L3 autour de sa branche centrale,
    le premier enroulement partiel de l'enroulement de commande L2 étant prévu dans la branche principale droite et le deuxième enroulement partiel de l'enroulement de commande L2 dans la branche principale gauche,
    les sens d'enroulement des deux enroulements partiels étant contraires.
  2. Agencement selon la revendication 1,
    caractérisé en ce
    que l'inductance (L) est la bobine secondaire.
  3. Agencement selon au moins l'une des revendications précédentes,
    caractérisé en ce
    que l'inductance (L) est prévue dans un agencement gyrateur.
  4. Agencement selon au moins l'une des revendications précédentes,
    caractérisé en ce
    que l'inductance (L) est reliée à l'inductance (L) du système de conducteurs primaires et une capacité coopère avec le système de conducteurs primaires de telle sorte que la fréquence de résonance résultante associée puisse être accordée sur la moyenne fréquence.
  5. Agencement selon la revendication 4,
    caractérisé en ce
    que la capacité est disposée dans un agencement gyrateur qui alimente le système de conducteurs primaires directement ou via un transformateur
    et/ou que la capacité est branchée en série ou en parallèle avec l'inductance (L) reliée à l'inductance (L) du système de conducteurs primaires.
  6. Agencement selon au moins l'une des revendications précédentes,
    caractérisé en ce
    qu'un circuit régulateur est prévu, dont l'entrée est prévue avec un moyen de détection de la position de phase relative entre une tension et un courant, le courant étant le courant primaire, et dont la sortie est reliée à l'inductance commandable (L) en tant qu'actionneur.
  7. Agencement selon au moins l'une des revendications précédentes,
    caractérisé en ce
    que les moyens pour générer le courant unipolaire comprennent un agencement commandable tel qu'un convertisseur DC/DC, un commutateur de puissance et/ou une résistance commandable.
  8. Agencement selon au moins l'une des revendications précédentes,
    caractérisé en ce
    que le noyau (2, 3) présente un entrefer (S), lequel est traversé par le flux principal généré par l'enroulement principal,
    les flux générés par les enroulements partiels respectifs sont conduits sensiblement à travers des zones du noyau (2, 3) sans entrefer (S).
  9. Agencement selon la revendication 6,
    caractérisé en ce
    que les moyens pour détecter la position de phase relative sont prévus sous la forme d'un organe de commande d'un circuit de régulation et reliés à celui-ci.
EP11001711.8A 2008-05-21 2009-04-22 Agencement inductif Active EP2357657B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810024602 DE102008024602B4 (de) 2008-05-21 2008-05-21 Schaltungsanordnung und deren Verwendung
EP09749527.9A EP2281293B1 (fr) 2008-05-21 2009-04-22 Inductance et dispositif

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP09749527.9 Division 2009-04-22
EP09749527.9A Division EP2281293B1 (fr) 2008-05-21 2009-04-22 Inductance et dispositif
EP09749527.9A Division-Into EP2281293B1 (fr) 2008-05-21 2009-04-22 Inductance et dispositif

Publications (3)

Publication Number Publication Date
EP2357657A2 EP2357657A2 (fr) 2011-08-17
EP2357657A3 EP2357657A3 (fr) 2014-09-24
EP2357657B1 true EP2357657B1 (fr) 2015-11-11

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ID=40849233

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09749527.9A Active EP2281293B1 (fr) 2008-05-21 2009-04-22 Inductance et dispositif
EP11001711.8A Active EP2357657B1 (fr) 2008-05-21 2009-04-22 Agencement inductif

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09749527.9A Active EP2281293B1 (fr) 2008-05-21 2009-04-22 Inductance et dispositif

Country Status (4)

Country Link
EP (2) EP2281293B1 (fr)
CN (1) CN102037525B (fr)
DE (1) DE102008064640B4 (fr)
WO (1) WO2009141037A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP3076411B1 (fr) * 2015-04-01 2017-11-29 Siemens Aktiengesellschaft Circuit de reduction d'une part de flux continu magnetique dans le noyau d'un transformateur
CN106411115B (zh) * 2016-11-21 2019-03-08 盐城工学院 一种可变电感工作范围连续扩展的方法
JP6786453B2 (ja) * 2017-08-04 2020-11-18 矢崎総業株式会社 サージ電圧低減部材
AT520274B1 (de) * 2017-08-08 2023-09-15 Himmelstoss Dipl Ing Dr Felix DC/DC Konverter mit zusätzlichem induktiv gekoppeltem spannungsbidirektionalen Schalter zur Überbrückung einer Induktivität
WO2019076483A1 (fr) * 2017-10-18 2019-04-25 Sew-Eurodrive Gmbh & Co. Kg Chargeur et système de transmission d'énergie vers une unité mobile ayant un accumulateur d'énergie et un enroulement secondaire
DE102021205817A1 (de) 2021-06-09 2022-12-15 Siemens Aktiengesellschaft Ladestation für ein elektrisch antreibbares Fahrzeug

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CA1229381A (fr) * 1985-01-16 1987-11-17 Leonard Bolduc Inductance variable autocontrolee a entrefers
EP0443342A1 (fr) 1990-02-23 1991-08-28 Bonnet, André Procédé de contrôle du transfert d'énergie dans un convertisseur statique; convertisseur statique d'énergie pour sa mise en oeuvre et alimentation électrique utilisant un tel convertisseur
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DE10053373B4 (de) 2000-10-27 2019-10-02 Sew-Eurodrive Gmbh & Co Kg Verfahren und Vorrichtung zur berührungslosen Energieübertragung
DE10141884B4 (de) 2000-11-15 2020-06-04 Abb Schweiz Ag Einspeiseschaltung eines ein Magnetfeld erzeugenden Resonanzkreises sowie Steuer/Regeleinrichtung hierzu
DE10339340B4 (de) 2003-08-25 2020-02-20 Sew-Eurodrive Gmbh & Co Kg Vorrichtung zur berührungslosen Energieübertragung
JP4266951B2 (ja) * 2005-03-31 2009-05-27 Ｔｄｋ株式会社 磁気素子および電源装置
DE102006043960B4 (de) * 2006-09-14 2021-01-21 Sew-Eurodrive Gmbh & Co Kg System zur berührungslosen Energieübertragung

Also Published As

Publication number Publication date
EP2357657A3 (fr) 2014-09-24
WO2009141037A1 (fr) 2009-11-26
DE102008064640B4 (de) 2024-08-22
DE102008064640A1 (de) 2009-12-03
CN102037525A (zh) 2011-04-27
CN102037525B (zh) 2014-01-15
EP2281293A1 (fr) 2011-02-09
EP2281293B1 (fr) 2017-02-01
EP2357657A2 (fr) 2011-08-17

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