EP4085476A1 - Dispositif pour connecter une source de puissance a un inducteur - Google Patents
Dispositif pour connecter une source de puissance a un inducteurInfo
- Publication number
- EP4085476A1 EP4085476A1 EP20851240.0A EP20851240A EP4085476A1 EP 4085476 A1 EP4085476 A1 EP 4085476A1 EP 20851240 A EP20851240 A EP 20851240A EP 4085476 A1 EP4085476 A1 EP 4085476A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection
- plates
- plate
- inductor
- series
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/02—Mountings
- H01G2/04—Mountings specially adapted for mounting on a chassis
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
Definitions
- TITLE DEVICE FOR CONNECTING A POWER SOURCE TO AN INDUCER
- the invention relates to capacitor mounting devices used in oscillating circuits of induction heating equipment.
- Devices for mounting capacitors in oscillating circuits include connection plates of electrically conductive material, typically copper, on which capacitors are mounted.
- electrically conductive material typically copper
- capacitors are generally mounted on a plate, their number being linked to their unit capacity, the total capacity sought and the electrical characteristics of the oscillating circuit (voltage, current and frequency).
- connection plates 1, 2, 3, 4 are arranged in parallel, with two outer plates and two central plates arranged on the same plane.
- the device thus comprises two insulating plates.
- two capacitors 7 are fixed on a first outer plate 1 and another is fixed on the second outer plate 4.
- Two connection plates 2, 3 central are arranged between the two outer plates 1, 4.
- a capacitor comprises means for fixing to a connection plate, for example threaded holes for mounting with screws, and an electrical connection rod 8, for example threaded.
- the connection plates include holes in line with the electrical connection rods of the capacitors to let the latter pass.
- the diameter of the holes of the connection plates is chosen according to the diameter of the electrical connection rods so that it is large enough so that the current cannot pass between a rod of a capacitor and the plate on which it is fixed, and thus guarantee an electrical isolation distance.
- the length of the electrical connection rods of the capacitors is such as to allow connection to another connection plate.
- FIG. 2 illustrates the electric diagram corresponding to this example of series-parallel assembly of FIG. 1.
- This choke generates electrical losses, and therefore a reduction in efficiency, as well as a magnetic field generated by the current flowing in the connections, a source of heating in the connection plates, which requires more cooling (image of electrical losses).
- a device for connecting a power source to an inductor comprising at least three connection plates of conductive material to which are electrically connected to any number of capacitors, the connection plates allowing a electrical connection between the power source and the inductor according to a parallel, series or series-parallel assembly, characterized in that at least two connection plates are bent substantially at 90 ° each forming two half-plates substantially perpendicular to one another to the other, each half-plate being electrically connected to a different connection plate
- one of the three connection plates can be substantially straight and be electrically connected to two different connection plates.
- the device may comprise four connection plates bent substantially at 90 ° each forming two half-plates substantially perpendicular to one another, each half-plate being electrically connected to a connection plate. different, the assembly having a substantially cross shape in a transverse view.
- connection half-plates of the same connection plate can be separated from two other connection half-plates of another connection plate by at least one plate made of insulating material bent substantially at 90 °.
- connection plates can comprise a cooling channel in which a cooling fluid circulates.
- an induction heating installation comprising a power source and an inductor, characterized in that the electrical connection between the power source and the inductor is made by at least one device. according to the first aspect of the invention, or one or more of its improvements.
- the invention makes it possible to reduce to a negligible level the inductance in the connections and consequently the magnetic field generated by the currents flowing in the connections.
- FIG. 1 is a schematic and cross-sectional view of an in-line connection of connection plates according to the prior art, for series-parallel connection of capacitors.
- FIG. 2 is a schematic view of the electrical principle diagram corresponding to the series - parallel assembly of FIG. 1.
- FIG. 3 is a schematic view in cross section of a cross-connection of connection plates according to an exemplary embodiment of the invention, for a series-parallel connection of capacitors.
- FIG. 4 is a schematic view of the electrical principle diagram corresponding to the series - parallel assembly of FIG. 3.
- FIG. 5 is a three-dimensional schematic view from a first point of view of a cross mounting of connection plates according to an exemplary embodiment of the invention, for series-parallel mounting of capacitors.
- FIG. 6 is a schematic three-dimensional view of the cross assembly of Figure 4 from a second point of view.
- FIG. 7 is a schematic and cross-sectional view of a cross mounting of connection plates according to an exemplary embodiment of the invention, for parallel mounting of capacitors.
- FIG. 8 is a schematic view of the electrical principle diagram corresponding to the parallel assembly of FIG. 7.
- FIG. 9 is a schematic and cross-sectional view of a cross mounting of connection plates according to an exemplary embodiment of the invention, for a series mounting of capacitors.
- FIG. 10 is a schematic view of the electrical principle diagram corresponding to the parallel assembly of FIG. 9.
- FIG. 11 is a schematic and cross-sectional view of a T-connection of connection plates according to an exemplary embodiment of the invention, for series-parallel connection of capacitors.
- FIG. 12 is a schematic view of the electrical principle diagram corresponding to the assembly of FIG. 11.
- FIG. 13 is a schematic and cross-sectional view of an alternative embodiment of a T-assembly of connection plates of Figure 11, shown here in series-parallel assembly.
- FIG. 14 is a schematic view in cross section of the alternative embodiment of a T-assembly of connection plates according to Figure 13, shown here in parallel assembly.
- FIG. 15 is a longitudinal schematic view of an exemplary application of the invention.
- variants of the invention comprising only a selection of characteristics described, by following isolated from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art.
- This selection comprises at least one characteristic, preferably functional without structural details, or with only part of the structural details if this part alone is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art. .
- FIG. 3 illustrates schematically and in cross section an assembly of connection plates for a series-parallel assembly, according to an exemplary embodiment of the invention.
- Its basic electrical diagram, shown in Figure 4, is therefore similar to that shown in Figure 2.
- the four connection plates 11, 12, 13, 14 are bent at right angles and the together substantially form a cross in transverse view.
- the connection plates are only spaced by the thickness of an insulating plate 15, 16, no connection plate being disposed between outer plates.
- the distance between two connection plates is thus reduced to the strict minimum linked to the thickness of the insulating plate required to ensure electrical insulation between the plates.
- several capacitors are connected over the height of the connection plates 11 and 12, the number of capacitors being linked to the characteristics of the installation.
- the insulating plates 15, 16 are also bent at right angles, avoiding any risk of electric arcing in the center of the cross which would result from the use of straight plates.
- the folded insulating plates ensure a perfect continuity of insulating material at the center of the cross while straight plates would lead to a discontinuity of insulating material at the intersections of the center of the cross, hence a risk of creepage lines where the insulating material could be insufficient, at the junction of two plates.
- two Teflon® plates with a thickness of 1 mm can be used as a replacement for a plate 2 mm thick.
- FIGs 5 and 6 illustrate in longitudinal view another example of a capacitor mounting device with cross connection plates and a series-parallel assembly according to the invention, according to two different viewing angles.
- the assembly includes a set of 8 capacitors. These are cooled by a flow of cooling water.
- each condenser comprises a first connection 17 for the cooling water supply and a second connection 18 for the water outlet.
- the condensers can all be connected in series to the same cooling water circuit, or they can be connected individually or by group of condensers, each group being connected in parallel to the cooling circuit.
- a capacitor comprises a base made of an electrically conductive material, for example copper, by which it is fixed to a connection plate by means of four screws 19. There is thus an electrical continuity between the connection plate and the capacitor.
- a capacitor comprises a threaded rod 8 for electrical connection with another connection plate by means of a nut 21 on which it is tightened.
- the connection plates include a cooling channel 22 in which cooling water circulates. Due to the limited heating of the connection plates, the cooling channel only covers part of the surface of a plate, that where the electric current is the most important, as can be seen in figures 5 and 6
- the capacitors also contribute to the cooling of the connection plates by their water-cooled base.
- This channel 22 comprises a first connection 23 for the cooling water supply and a second connection 24 for the water outlet.
- connection plates 11 and 12 are electrically connected via two compensators 7 and via a "shunt" ring 25 visible in figure 6.
- This cooled ring is fixed to the plate 11 by means of four screws, like the capacitors, and it also comprises a threaded rod 26 for electrical connection with the plate 12 by means of a nut 27 on which it is tightened.
- the electrical connections between the connection plates produced via capacitors 7 or rings 25 make it possible to switch easily from a series-parallel type assembly, to a series assembly or a parallel assembly.
- FIG. 7 illustrates another exemplary embodiment of the invention comprising four connection plates mounted in a cross with a parallel mounting.
- This example includes in this sectional view a capacitor 7 and two shunt rings 25. Again, the total number of capacitors and rings arranged longitudinally is a function of the desired characteristics.
- the equivalent electrical diagram is shown in FIG. 8.
- FIG. 9 illustrates another exemplary embodiment of the invention comprising four connection plates mounted crosswise with a series assembly. This example comprises in this sectional view two capacitors 7. As previously, the total number of capacitors and rings arranged longitudinally is a function of the desired characteristics.
- the equivalent electrical diagram is shown in figure 10.
- FIG. 11 illustrates another exemplary embodiment of the so-called "T" invention comprising three connection plates.
- two of the connection plates 11, 12 are bent at 90 ° while the third 20 is straight.
- the equivalent electrical diagram, in parallel series, is shown in Figure 12. It retains all the advantages of the invention, in particular due to a distance reduced to the minimum possible between each pair of connection plates.
- the folded plates 11, 12 are made in two parts, 11 a, 11 b, 12a, 12 b. They are attached to each other with screws and nuts. This configuration makes it possible to easily eliminate the capacitor in series and therefore to switch to a parallel assembly only.
- the invention applies in particular to the following conditions:
- Frequency Medium frequency (from 15 kHz to 2 MHz)
- FIG. 15 illustrates schematically and in front view an example of application of the invention for the connection of a power source to an inductor intended to heat a moving metal strip in a continuous annealing line.
- the connection between the power source 9 and the inductor 10 is made by four devices 30 with cross mounting according to the invention, the characteristics of which are as follows:
- the implementation of the invention allows a compact mounting of the heating installation, the distance between the power source and the inductor being limited thanks to the compactness of the mounting device. capacitors due to the removal of the straight connection plates.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- General Induction Heating (AREA)
- Coils Of Transformers For General Uses (AREA)
- Structure Of Printed Boards (AREA)
- Combinations Of Printed Boards (AREA)
- Power Conversion In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1915719A FR3105875B1 (fr) | 2019-12-30 | 2019-12-30 | Dispositif pour connecter une source de puissance a un inducteur |
| PCT/FR2020/052641 WO2021136918A1 (fr) | 2019-12-30 | 2020-12-30 | Dispositif pour connecter une source de puissance a un inducteur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4085476A1 true EP4085476A1 (fr) | 2022-11-09 |
Family
ID=69743590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20851240.0A Pending EP4085476A1 (fr) | 2019-12-30 | 2020-12-30 | Dispositif pour connecter une source de puissance a un inducteur |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20230061190A1 (fr) |
| EP (1) | EP4085476A1 (fr) |
| JP (1) | JP7628135B2 (fr) |
| KR (1) | KR102827550B1 (fr) |
| CN (1) | CN115136264B (fr) |
| CA (1) | CA3163231A1 (fr) |
| FR (1) | FR3105875B1 (fr) |
| WO (1) | WO2021136918A1 (fr) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63308888A (ja) * | 1987-06-10 | 1988-12-16 | Yasushi Horiuchi | 高周波誘導加熱用電源装置 |
| FR2671904B1 (fr) * | 1991-01-18 | 1994-12-09 | Albert Jakoubovitch | Systeme d'assemblage de condensateurs de puissance en batterie. |
| FR2687832B1 (fr) * | 1992-02-26 | 1996-09-20 | Albert Jakoubovitch | Systeme d'assemblage de condensateurs refroidis par conduction. |
| FR2716033B1 (fr) * | 1994-02-09 | 1996-04-05 | Jakoubovitch A | Dispositif d'assemblage de condensateurs de puissance. |
| FR2732156B1 (fr) * | 1995-03-23 | 1997-04-30 | Jakoubovitch A | Dispositif d'assemblage de condensateurs de puissance |
| JPH10116751A (ja) * | 1996-10-08 | 1998-05-06 | Taiyo Yuden Co Ltd | コンデンサユニット |
| US6399929B1 (en) * | 2000-05-12 | 2002-06-04 | Ajax Magnethermic Corporation | Induction heater comprising a coil/capacitor bank combination including a translatable coil assembly for movement on and off a continuous strip |
| JP4479380B2 (ja) * | 2004-06-30 | 2010-06-09 | 日本ケミコン株式会社 | 接続体、電子部品の接続構造、及び電子部品装置 |
| IL190329A (en) * | 2008-03-20 | 2014-11-30 | Celem Passive Components Ltd | Get high-powered cooled by side-by-side transmission |
| JP2013145790A (ja) * | 2012-01-13 | 2013-07-25 | Hitachi Chemical Co Ltd | 屈曲配線板、部品実装屈曲配線板及びそれに用いる金属層付絶縁層 |
| JP6653131B2 (ja) * | 2015-06-04 | 2020-02-26 | 高周波熱錬株式会社 | 誘導加熱用電源装置 |
-
2019
- 2019-12-30 FR FR1915719A patent/FR3105875B1/fr active Active
-
2020
- 2020-12-30 WO PCT/FR2020/052641 patent/WO2021136918A1/fr not_active Ceased
- 2020-12-30 EP EP20851240.0A patent/EP4085476A1/fr active Pending
- 2020-12-30 CA CA3163231A patent/CA3163231A1/fr active Pending
- 2020-12-30 KR KR1020227025837A patent/KR102827550B1/ko active Active
- 2020-12-30 CN CN202080091039.2A patent/CN115136264B/zh active Active
- 2020-12-30 JP JP2022564697A patent/JP7628135B2/ja active Active
- 2020-12-30 US US17/789,904 patent/US20230061190A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP7628135B2 (ja) | 2025-02-07 |
| CN115136264A (zh) | 2022-09-30 |
| CA3163231A1 (fr) | 2021-07-08 |
| JP2023509804A (ja) | 2023-03-09 |
| WO2021136918A1 (fr) | 2021-07-08 |
| KR102827550B1 (ko) | 2025-07-01 |
| KR20220116047A (ko) | 2022-08-19 |
| FR3105875A1 (fr) | 2021-07-02 |
| FR3105875B1 (fr) | 2023-09-08 |
| CN115136264B (zh) | 2025-08-19 |
| US20230061190A1 (en) | 2023-03-02 |
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