EP3304570A1 - Geräuscharmer spezialtransformator - Google Patents
Geräuscharmer spezialtransformatorInfo
- Publication number
- EP3304570A1 EP3304570A1 EP16734034.8A EP16734034A EP3304570A1 EP 3304570 A1 EP3304570 A1 EP 3304570A1 EP 16734034 A EP16734034 A EP 16734034A EP 3304570 A1 EP3304570 A1 EP 3304570A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer
- coils
- housing
- coil
- transformer according
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000011162 core material Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000004382 potting Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 230000000475 sunscreen effect Effects 0.000 claims description 2
- 239000000516 sunscreening agent Substances 0.000 claims description 2
- 238000005538 encapsulation Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 230000005291 magnetic effect Effects 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- NQLVQOSNDJXLKG-UHFFFAOYSA-N prosulfocarb Chemical compound CCCN(CCC)C(=O)SCC1=CC=CC=C1 NQLVQOSNDJXLKG-UHFFFAOYSA-N 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000037072 sun protection Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- 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
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/303—Clamping coils, windings or parts thereof together
-
- 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
- H01F27/33—Arrangements for noise damping
-
- 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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
Definitions
- the invention relates to a working with low frequency electrical transformer.
- the invention is in particular a special transformer with extremely good structure-borne sound and / or airborne sound in unusually elongated and extremely flat design because of an available or intended installation space.
- the very low structure-borne noise and airborne sound behavior lies over an extended ambient temperature range according to so-called MIL or "automotive” specifications below the low limit values, as they are customary in industry, for example in the automotive sector.
- a transformer constructed in accordance with the invention should have a substantially lower input current than the value of the primary input current at a minimum specified capacitive load.
- the invention relates to methods for cost-optimal production of such a transformer.
- Tesla Transformer As it is known with its preferred pyramidal shape, for example, from the patent US 1, 1 19,732.
- transformers either of their shape and dimensions, performance class, cost or noise emissions, are not suitable for realizing the functions as is possible with a miniature transformer according to the invention.
- this document cites E-shaped core parts and, in contrast to the present invention, is based on metallic separating plates between axially aligned coils.
- the invention has for its object to provide a transformer having all the following properties in combination, namely:
- transformer windings which are distributed as linearly successive, flushing spools on wide baffles nd, wherein egg nzi ge centrally symmetrically arranged primary coil and two other, as Sekudärwickl ung interconnected coils in mechanically concatenated (concatenated) construction are available, the length of the transformer does not exceed 8 times the height, the degree of height of the transformer maximum 13 mm and the volume of the transformer including an associated housing is limited to 130 cubic centimeters, preferably only 60 cubic centimeters.
- the existing bobbins are all aligned coincidentally axially along their longitudinal axes and are mechanically chained together adhering to predefined rotational positions about the longitudinal axis, preferably by means of uniform, highly symmetrical shaped clip-connection devices.
- a further aspect of the solution consists in a method for producing such a transformer, which comprises the following method steps: a) winding and provision of coils on bobbin, which preferably have the same cross-sectional dimensions and snap-in (activatable) clip devices b) generating a combined Mechanically integral coil set by stringing together three or more such coils by means of said clip devices in the direction of the coil axes c) Completing the transformer by alternately inserting ferromagnetic core material in said one-piece coil set and then attaching the coil set to the transformer core thus formed
- Fig. 1 is a schematic plan view of a transformer according to the invention
- Fig. 2 is a schematic perspective proportionate view
- Fig. 3 is a perspective complete view
- Fig. 4 is a schematic view of the invention
- a transformer according to the invention with the required service characteristics consists, as shown in schematic form in FIG. 1, of a special transformer core and special transformer coils.
- the transformer coils according to the invention consist of at least three individual coils 10, 20 and 30. These are arranged axially aligned and produce in this way the exceptionally unusually large ratio of length to cross section (width times height) of the transformer.
- a transformer according to the invention is equipped with further axially aligned coils.
- the centrally symmetrically arranged coil 20 is preferably used as a primary coil, while coils 10 and 30 preferably function as secondary coils.
- coils 10 and 30 are electrically connected in series. They then generate in combination not only in a conventional manner a desired secondary voltage, but also in a innovative way a relatively large leakage inductance.
- the feeding of the primary voltage takes place via the connection contacts 21, 22, while the output of the contactor is in contact with the secondary voltage, e.g. via the terminal contacts 1 1 and 32 takes place, wherein the terminal contacts 12 and 31 are then electrically connected (not shown) and the individual secondary voltages of coils 10 and 30 are thus added in the correct phase.
- Another essential aspect of the invention is the use of completely uniform highly symmetrical and elongated bobbins. These are provided in a conventional manner as needed with different Wickelungen made of enamel-insulated wire.
- the leakage flux is increased in accordance with the invention desired, without regard to desired overall efficiency and No-load current special disadvantages arise.
- a transformer length is preferred which is more than four times, preferably more than five times the width of the transformer.
- a transformer height can be provided in this way, which is only less than a sixth, preferably less than one-eighth of the transformer length.
- the required electrical properties of the transformer according to the invention are also realized inexpensively by using only commercially available cheapest transformer sheet materials, ie only in cold-rolled or grain-oriented design. It is therefore not necessary to use expensive special materials such as ferrite, high nickel or amorphous metals in order to provide the highest quality of service properties, and according to the innovation, this can be dispensed with.
- FIG. 2 shows a transformer according to the invention comparable to Fig. 1 in a diagrammatic perspective view, but partially assembled. without primary coil 20.
- connection contacts 1 1, 12, etc. can be provided with contact pins, solder lugs or other connection means.
- the transformer core 40, 41 is advantageously made of sheets of ED cut.
- the sheets are also held together with rivets of suitable design, or with a bond, or with a suitable form-fitting connection, also to meet the acoustic requirements.
- the transverse yoke of said sheets of transformer core is held relatively wide, approximately twice as wide as a leg width.
- FIG. 3 A particularly advantageous embodiment of the invention (English: Best mode of invention) is shown in Fig. 3.
- the bobbins shown (10 ', 20', 30 ') allow a particularly compact and efficient construction.
- a special aspect of the invention relates to the arrangement and orientation of the pin-shaped contact terminals 1 1, 12, etc., which have to save space alternately to the left and to the right side; nevertheless, the bobbins are uniformly highly symmetric and of identical shape.
- the modular arrangement of coils in a transformer designed according to the invention is particularly suitable for automation and, in a further optimized embodiment of the invention, results in even lower production costs.
- FIG. 1 The principle of the axially directed connection of transformer coils is shown in FIG.
- Each of the schematically shown coils 110, 120, 150 with electrical connection elements 111, 112, etc. has one or more clip or latching devices 115, 116 for a positive connection.
- the clip or Verrastungsvoriquesen can in a variety of shapes, for example in the manner of tongue and groove, are performed and are shown in Fig. 4 only schematically and in the simplest form to suggest the principle.
- a secondary AC voltage with the size of the pointer U21 is generated.
- a capacitive load is a secondary AC voltage of the size of the pointer U22. This is in any case greater than pointer U21 due to the capacitive and leakage-related vectorial variable 122 * (R + jXs). (jXs denotes leakage flux impedance with inductive or capacitive load).
- the invention is therefore less suitable for inductive components that are to be operated with a relatively high nominal voltage. Accordingly, the transformer according to the invention can be operated in an innovative manner as needed and by selecting a suitable frequency of the primary voltage (operating frequency) also in the vicinity of the associated electrical resonance.
- the transformer according to the invention help in a special way to be able to energize a downstream intended, substantially capacitive load of a few hundred nano Farad or more.
- the mentioned electrical or magnetic design of the invention also has an innovative effect that the primary-side current at idling is substantially (at least 70%) smaller than compared to the operation of the transformer at the lower limit of such intended load-range.
- the invention is therefore particularly suitable for a downstream load in the form of an electrochromic or LCD shading device in the sense of sun protection.
- Such a sunscreen or a corresponding shading device is mentioned, for example, in claim 7 of DE19962115A.
- a particularly important embodiment of the invention with optimum suitability for the automotive market is shown in FIG.
- the bottom of the plastic housing can also be provided with a thin layer of potting compound. After curing of this layer, the transformer body is inserted and then finally wrapped with potting compound.
- Transformer body on the housing bottom, with a total bearing surface (reference numeral 34) from zero to less than 150 mm ** 2
- the very small housing 160 shown substantially to scale in FIG. 6, has a height of only 13 mm (reference numeral 13) and is open at the top.
- the illustrated symmetrical spacing of the transformer body 180 to the sides of the housing (end faces 162, longitudinal sides 164) is in the millimeter range between 0.5 and 5 mm and has considerable significance for the advantageous noise behavior of the invention.
- the bobbins 10 ' , 20 ' , 30 ' have nubs or foot-like spacer elements 34, with which the column bodies are placed on the floor panels (optionally on a layer of encapsulant), such as shown in Fig. 6.
- the spacing elements according to the invention have a support surface of each max. 16 mm ** 2 and in total less than 150 mm ** 2.
- the already mentioned potting compound 170 is provided, which tuned to the acoustic target values of the invention and having a Shore A hardness of less than 35 comparatively good elasticity, but also suitable damping properties. Due to the above-described careful coordination of the mechanical, electrical and magnetic parameters of each other, the transformer according to the invention developed at each point of the mounting surface of the transformer housing nurge ri nge sound accelerations. Based on the operating frequency, the sum of the harmonics of the sound accelerations in the frequency range up to 1000 Hz is less than 0.40 m / sec ** 2.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015108885 | 2015-06-04 | ||
PCT/IB2016/053308 WO2016193958A1 (de) | 2015-06-04 | 2016-06-06 | Geräuscharmer spezialtransformator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3304570A1 true EP3304570A1 (de) | 2018-04-11 |
EP3304570B1 EP3304570B1 (de) | 2020-09-02 |
Family
ID=56296867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16734034.8A Active EP3304570B1 (de) | 2015-06-04 | 2016-06-06 | Geräuscharmer spezialtransformator |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3304570B1 (de) |
WO (1) | WO2016193958A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL239728B1 (pl) * | 2018-03-29 | 2022-01-03 | Toroidy Transf L Lachowski Spolka Komandytowa | Toroidalny transformator czestotliwosci akustycznych ze szczelina powietrzna |
CN109801781B (zh) * | 2019-03-14 | 2021-07-27 | 安徽华东光电技术研究所有限公司 | 一种医用栅控枪电源调制器变压器及其制作方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1119732A (en) | 1907-05-04 | 1914-12-01 | Nikola Tesla | Apparatus for transmitting electrical energy. |
US2582291A (en) * | 1948-08-05 | 1952-01-15 | Joseph G Sola | Transformer construction |
DE19962115B4 (de) | 1999-12-21 | 2005-09-08 | Webasto Ag | Sonnenschutz für lichtdurchlässige Karosserieflächen |
TWI379326B (en) * | 2009-11-19 | 2012-12-11 | Delta Electronics Inc | Transformer with modular winding bobbin devices |
JP2013172043A (ja) * | 2012-02-22 | 2013-09-02 | Hitachi Industrial Equipment Systems Co Ltd | 変流器、変流器に用いられるコイルユニット、及びコイルユニットの巻線方法 |
TWI437586B (zh) * | 2012-03-26 | 2014-05-11 | Delta Electronics Inc | 變壓器結構 |
TWI505302B (zh) * | 2014-07-30 | 2015-10-21 | Delta Electronics Inc | 磁性組件及其組合式繞線架 |
-
2016
- 2016-06-06 EP EP16734034.8A patent/EP3304570B1/de active Active
- 2016-06-06 WO PCT/IB2016/053308 patent/WO2016193958A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2016193958A1 (de) | 2016-12-08 |
EP3304570B1 (de) | 2020-09-02 |
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