EP2676280A1 - Anordnung zum kühlen einer spule und umrichter - Google Patents
Anordnung zum kühlen einer spule und umrichterInfo
- Publication number
- EP2676280A1 EP2676280A1 EP12702414.9A EP12702414A EP2676280A1 EP 2676280 A1 EP2676280 A1 EP 2676280A1 EP 12702414 A EP12702414 A EP 12702414A EP 2676280 A1 EP2676280 A1 EP 2676280A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- channels
- winding
- insulating means
- insulating
- 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
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
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- 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
- H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
Definitions
- the invention relates to an arrangement for cooling a coil and an inverter.
- Coil core is arranged around.
- the coil winding has a coil axis, so that the coil winding can be produced wound around the coil axis in the circumferential direction.
- Coils are used as inductors in electrical appliances, for example as components of filters, such as mains side filters or the like.
- the invention is therefore based on the object to develop a coil assembly, wherein the cooling of the coil to be improved.
- the object is achieved in the arrangement for cooling a coil according to the features specified in claim 1 and in the inverter according to the features indicated in claim 12.
- the arrangement is provided for cooling a coil having a winding arranged on a coil core, wherein the arrangement comprises a coil, a fan and at least one air guide, wherein in the winding region of the coil channels are arranged , wherein the air flow generated by the fan is at least partially passed into the channels by means of the air guiding means.
- the advantage here is that by means of the arrangement of channels in the winding region of the coil, a particularly effective cooling of the coil can be achieved.
- a fan is provided, which makes an active cooling feasible. In this way, a very effective cooling is thus achievable.
- the coil winding is surrounded by a first insulating means, in particular insulating paper, in particular mineral fiber paper, wherein a second insulating means is arranged overlapping the first insulating means which projects beyond the axial region covered by the coil winding and as
- Air guiding acts, in particular so that an air flow generated by the fan is supplied to the channels.
- the advantage here is that the coil outside, that is electrically isolable at its outer periphery.
- a second insulating means is attached to the first, so that an air guide is formed.
- the electrical insulation is further improved and in addition creates a superior area, which makes an additional function executable, namely the air conduction of the fan-driven air flow to the channels out. In this way, the air line and thus the cooling is improved.
- first and second insulating means are made of the same material.
- the advantage here is that without special material and / or special storage of another component, the second insulating is available.
- the same insulating paper can be used as the first and second insulating means. By merely different positioning of the paper thus an air guide can be produced and the cooling in a simple and cost-effective manner can be improved.
- channels are equally spaced in the circumferential direction, in particular three, four, five or more channels are arranged on one, in particular the same, radial distance.
- the channels are formed by means of respective hollow parts, which are provided in the Wicklungsberiech, in particular wrapped.
- the advantage here is that the hollow parts define the formation of the channels and thus is determined independently of the winding of the channel cross-section.
- the channels and / or the hollow parts are each formed cuboid. The advantage here is that a particularly simple production is possible.
- the cuboids are flat executable and thus an effective
- the channels and / or the hollow parts are each formed sickle-shaped, wherein the sickle extends in the circumferential direction, in particular wherein the sickle has a substantially constant radial extent.
- the advantage here is that an effective heat dissipation and a high winding density can be achieved.
- the channels are very narrow executable, so are only slightly extended in the radial direction to Spulenachscardi direction, and are extended as long as possible in the circumferential direction or tangential direction, ie substantially parallel to the respective winding position.
- one of the narrow channel cross section despite its increased flow resistance is well flowed through, because the air supply due to the air guide, in particular as a result of the second insulating, lossless is passed into the channels and therefore the fan power is used optimally used to overcome the flow resistance. In this way, therefore, an effective cooling air flow can be generated and thus the most uniform and efficient cooling of the channel adjacent to each other
- Winding layer or winding layers are Winding layers or winding layers.
- a channel between the winding region of the coil and the spool core is arranged, in particular so that the associated hollow part touches the spool core, and / or the hollow part of another channel is surrounded by the winding region.
- the coil is used as a throttle and / or in a filter assembly comprising at least one capacitor used.
- the advantage here is that high currents and power through the coil are feasible, since it has an effective cooling.
- the spool core is designed as a laminated core and / or has legs which are connected at their respective end portions with a respective yoke, in particular wherein the coil core is formed rectangular.
- the advantage here is that a modular design is achieved, so that with a few stocked types of parts a high variance of coil cores is easy to produce.
- an air-conducting means connected to the housing of the fan touches the second insulating means, in particular so that an otherwise closed flow channel leading from the fan to the channels in the winding area is formed by the fan to the channels in the winding area.
- the advantage here is that little
- the second insulating means is held at its end remote from the first insulating means and / or the coil end shaping and / or guided by a holding part and / or towards the second insulating bent-up tabs of a stamped and bent part, in particular foot part, in particular the coil core is held by the stamped and bent part, in particular screw-connected to the stamped and bent part.
- the advantage here is that the outstanding area is held shaping in a simple and cost-effective manner.
- a second insulating means a less rigid material can be used, such as insulating paper or the like.
- the arrangement comprises at least a second coil, in particular identically constructed coil, wherein the second insulating means both coils overlapping the respective first insulating means for supplying the cooling air flow to the arranged in the winding regions of the coils channels.
- inverter Important features of the inverter are that of the emerging from the channels air flow is directed by a channel to the environment, which is limited by a housing wall and a Heilableitsch.
- the advantage here is that an effective cooling is easily achievable.
- the power electronics of the inverter heated air is supplied through a channel of the environment, which is at least partially limited by Luftableitstoff.
- the advantage here is that the two hot air, so exhaust air, channels are directly adjacent to each other can be arranged.
- heat from the coil core can be discharged on both sides, ie at its lower edge to the base plate and at its upper edge to another with the housing part and heat-conducting connected holding part.
- the coil assembly is connected to a stamped and bent part and held by this, with upturned tabs of the stamped and bent part forming the second insulating hold, in particular wherein at least one holding part is provided for further shaping holding the second insulating means, in particular wherein this holding part attached to the punched and bent part.
- the punched-bent part on the one hand has the holding function for the spool core and thus also for the entire coil.
- the stamped and bent part predetermines the shape for the lower edge of the second insulating means.
- the coil is castable, so that coil winding, first and second insulating means with the casting agent, in particular a casting resin, are impregnated and thus stabilized.
- the casting agent in particular a casting resin
- hereby seals are produced.
- an airtight connection produced as without the
- FIG. 1 shows an oblique view of the coil according to the invention.
- FIG. 2 shows an oblique view through a longitudinally cut coil.
- FIG. 3 shows an oblique view through a cross-sectioned coil.
- FIG. 4 shows a truncated converter with built-in coils.
- FIG. 5 the truncated converter is surrounded by coils surrounded by housing parts.
- FIG. 6 shows a cross section through the converter.
- FIG. 7 shows an oblique view of the underside of the converter, so that the bent-up tabs 70 can be seen, which shape-contacting the second insulating means 2.
- a fan 62 is arranged in the housing of the converter, as a result of which a cooling air flow is supplied to channels 10 of a coil by means of a further guidance through a dome-like air guiding means 40.
- the channels 10 are spaced from each other in the coil winding 22 of the coil, in particular, wherein some of the channels are regularly spaced from each other.
- the cooling air flow exits at the end region of the coil facing away from the fan 62 and is discharged into the environment through an air discharge duct 60.
- the coil is an example of a throttle, such as actuator throttle and / or filter inductance.
- the core of the coil is composed of yoke parts (20, 23) and leg parts 21 which are arranged between the yoke parts 20 and 23.
- the spool core in particular its lower yoke part 23 is screw-connected to a foot part 1, which thus acts as a lower holding part.
- the upper yoke part 20 is screw-connected by means of the screw 6 with a
- Retaining plate 7 which in turn is connected to the housing of the inverter and thus supports the spool core at the upper end region.
- the bobbin is surrounded and wrapped by the winding 22, whose electrical
- Busbars 8 lead to the other components of the power electronics of the inverter.
- the winding 22 of the coil hollow parts are inserted and then wrapped, so that axially extending channels 10 are formed, which serve for carrying out a cooling medium, such as air.
- the channels are preferably equally spaced in the circumferential direction.
- a first insulating means 5 is arranged, in particular, the winding 22 is wrapped with insulating paper 5, for electrical insulation.
- a mineral fiber paper is used as insulating paper.
- a second insulating means 2 in particular the same insulating paper, has an overlap with the first insulating means and extends in the axial direction to the edge 4. The overlap thus extends from the edge 4 to the edge of the third The second insulating means 2 thus extends in the axial direction from the axial area covered by the winding 22 in the direction of the foot part. Thus, therefore, the second insulating means 2 protrudes beyond the axial region of the coil winding 22.
- a holding part 1 1 is screwed to the foot part 1, whereby thus the second insulating means 2 even around the coil and an equally constructed, adjacent coil can be guided around.
- the coils are directly adjacent, so that the air flow can not escape into the space between the two coils.
- the projecting portion of the second insulating means is achieved by formed on the foot, in particular bent-up tabs 70, a further shaping guide for the second insulating means.
- the foot part 1 is preferably designed as a stamped and bent part.
- the protruding portion of the second insulating means 2 forms an air guiding means. Because together with the air guide 40, a limit for the airflow generated by the fan 62 is created. In this case, the housing of the fan 62, so the outer
- Air limitation of the fan 62 connected to the air guiding means 40, as shown in Figure 6.
- the coil winding is soaked in the production of the coil with a casting resin, which hardens.
- This casting resin not only improves the mechanical stability, in particular the fixing of the coil winding 22 but also improves the electrical insulation.
- the first insulating means 5 arranged in the coil winding between the winding layers of the coil winding 22 and arranged on the outer surface of the coil is mechanically stabilized, in particular stiffer.
- this is at least partially solidified via the first insulating 5 axially superior second insulating means 2 with the casting resin, in particular stiffened.
- the casting resin and / or an adhesive or filler by means of the casting resin and / or an adhesive or filler, a substantially tight connection between the second insulating means 2 and foot part 1 can be achieved.
- the word "dense” here refers to the tightness of the cooling air flow generated by the fan, so that only insignificant proportions of the cooling air flow between foot part 1 and second insulating 2 exit in the space surrounding the coil in the inverter.
- the air flow generated by the fan 62 is thus guided to those in the channels 10 and thus by the winding region of the winding 22.
- At the other end of the mouth of the channels 10 flows out of the air flow and is limited only by the intermediate wall 51 and housing parts of the inverter. The air flow is then through one of a
- the converter also has a signal electronics 65 for generating pulse-width-modulated drive signals for controllable power semiconductor switches of a power electronics 66 of the converter.
- the heat generated by the power electronics 66 is via a
- Cooling body passed to an air flow which is guided in the air channel 67, which is at least partially limited by the Heilableitblech 50.
- the air flow and the m Heilableitkanal 60 guided air flow directly adjacent and spaced only on the Heilableitblech 50 from each other. Since the temperature difference between the two adjacent air streams is small, there is no significant heat flow between the two
- Filter capacitor 64 which is also executable as a capacitor arrangement, arranged, which forms a filter with the coil, in particular with the entire coil assembly. In this way, loads on the network can be reduced by harmonics generated by the converter and / or high-frequency interference.
- the connections are led out to the connection means 9, in particular connector part, from the winding area.
- the channel cross sections are very narrow and elongated executable in the invention. In this case, the narrow direction is substantially radial and the long extension is substantially tangential or directed in the circumferential direction.
- the radial width a at the center or geometric center of gravity of the channel cross section and the length b in the circumferential direction or tangential direction are chosen such that the ratio a / b is between 0.05 and 0.2 is.
- Center of gravity chosen such that b / r is between 0.5 and 2.
- each channel 10 is associated with one or more channels 10 in the radial direction, wherein the mutually associated channels are then radially spaced from each other.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Insulating Of Coils (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011011302.9A DE102011011302B4 (de) | 2011-02-15 | 2011-02-15 | Anordnung zum Kühlen einer Spule und Umrichter |
| PCT/EP2012/000216 WO2012110187A1 (de) | 2011-02-15 | 2012-01-18 | Anordnung zum kühlen einer spule und umrichter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2676280A1 true EP2676280A1 (de) | 2013-12-25 |
| EP2676280B1 EP2676280B1 (de) | 2019-08-28 |
Family
ID=45562941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12702414.9A Active EP2676280B1 (de) | 2011-02-15 | 2012-01-18 | Anordnung zum kühlen einer spule und umrichter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2676280B1 (de) |
| DE (1) | DE102011011302B4 (de) |
| WO (1) | WO2012110187A1 (de) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3073885A (en) | 1960-09-28 | 1963-01-15 | Gen Electric | Insulating and cooling arrnagement for electrical apparatus |
| DE1941385U (de) | 1961-07-25 | 1966-06-30 | Licentia Gmbh | Zylinderspule mit mehreren, in einem gemeinsamen giessharzkoerper eingelagerten wicklungslagen. |
| DE1921103U (de) | 1965-06-04 | 1965-08-12 | Starkstrom Geraetebau G M B H | Trockentransformator mit forcierter luftkuehlung. |
| DE1912760C3 (de) | 1969-03-13 | 1979-01-25 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Mit axialen Kühlkanälen durchsetzte luftgekühlte Wicklung für Transformatoren, Drosselspulen u.dgl. induktive Geräte |
| DE2104112C3 (de) | 1971-01-29 | 1979-05-10 | Transformatoren Union Ag, 7000 Stuttgart | Verfahren zur Herstellung von Kühlkanälen in einer in Kunstharz vergossenen Wicklung |
| US3939449A (en) | 1975-01-15 | 1976-02-17 | Westinghouse Electric Corporation | Insulated transformer windings |
| US4129938A (en) | 1975-08-25 | 1978-12-19 | Hariolf Hagenbucher | Method of making tubular coils with cooling and insulating channels |
| CA1051103A (en) | 1976-05-31 | 1979-03-20 | Westinghouse Canada Limited | Fluid filled transformer |
| IT8221582U1 (it) | 1982-04-16 | 1983-10-16 | Sirten | Bobina d'induttanza. |
| US4541171A (en) | 1984-04-27 | 1985-09-17 | Westinghouse Electric Corp. | Method of making an electrical transformer |
| DE3732670A1 (de) * | 1987-09-28 | 1989-04-13 | Siemens Ag | Anordnung eines transformators und eines mastes in einem freileitungsnetz zur elektrizitaetsuebertragung |
| JPH0464204A (ja) * | 1990-07-04 | 1992-02-28 | Hitachi Ltd | 樹脂モールドコイルとその製造方法 |
| US8274350B2 (en) * | 2007-09-28 | 2012-09-25 | Siemens Aktiengesellschaft | Electric winding body and transformer having forced cooling |
| WO2011029488A1 (en) * | 2009-09-11 | 2011-03-17 | Abb Research Ltd | Transformer comprising a heat pipe |
-
2011
- 2011-02-15 DE DE102011011302.9A patent/DE102011011302B4/de active Active
-
2012
- 2012-01-18 WO PCT/EP2012/000216 patent/WO2012110187A1/de not_active Ceased
- 2012-01-18 EP EP12702414.9A patent/EP2676280B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012110187A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011011302A1 (de) | 2012-08-16 |
| DE102011011302B4 (de) | 2024-11-14 |
| EP2676280B1 (de) | 2019-08-28 |
| WO2012110187A1 (de) | 2012-08-23 |
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