CN1220037A - Rotating electrical machine with radial cooling - Google Patents
Rotating electrical machine with radial cooling Download PDFInfo
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- CN1220037A CN1220037A CN97195051.2A CN97195051A CN1220037A CN 1220037 A CN1220037 A CN 1220037A CN 97195051 A CN97195051 A CN 97195051A CN 1220037 A CN1220037 A CN 1220037A
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Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- 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
- H01F27/288—Shielding
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/15—Machines characterised by cable windings, e.g. high-voltage cables, ribbon cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/40—Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
A rotating electric machine comprising a stator (1) wound with high voltage cables and provided with stator teeth (4) extending radially inwards from an outer yoke portion (5), wherein at least one stator tooth (4) is connected to at least one cooling tube (18), which cooling tube (18) extends radially in the stator tooth (4) and is connected to a cooling circuit (34) in which a circulating coolant (36) is arranged, and wherein the cooling is arranged to take place over at least a major part of the axial extension of the stator tooth (4), and a method of cooling a rotating electric machine provided with high voltage stator windings, wherein the stator is cooled by circulating the coolant (36) in the cooling circuit (34) through cooling ducts extending radially through the stator tooth (4).
Description
The present invention relates to electric rotating machine, as synchronous motor, also have dual-feed motor (in all levels of asynchronous quiescent current converter, using), outer utmost point motor and flux electric machine and main alternating current machine of planning as the generator that is used for generating electricity in the power station synchronously.The present invention be more particularly directed to the stator of such motor, and relate to an embodiment who is used for cooling off stator tooth, and thereby also relate to the insulated electric conductor that constitutes stator winding indirectly.
For the voltage in scope 15-30kV, designed similar motor routinely, and 30kV is considered to the upper limit usually.Under the situation of generator, this often means that generator must be connected on the power network through transformer, transformer boost in voltage to network voltage value-in the scope of about 130-400kV.The present invention is intended for use high pressure, and this means that at first voltage surpasses 10kV.Exemplary operation scope for an apparatus according to the invention can be 36-800kV.
By using the High-Voltage Insulation electric conductor, following name, in stator winding, have and the cable that is used for transmitting similar solid insulation used in the cable of electric power (for example, crosslinked polyethylene (XLPE) cable) in, can increase to such magnitude of voltage to the voltage of motor, thereby it can be directly connected on the power network and without intermediate transformer.Thereby can eliminate conventional transformer.The general requirement of this notion, the groove that in stator cable is placed in one is than dark (the more number of turn by high voltage and winding causes thicker insulation) of relevant routine techniques.The loss loss that therefore will be different from conventional motor that distributes distributes, this bring again such as with the relevant new problem of cooling stator tooth.
In routine cooling, exist two kinds of different air cooling systems: wherein air in stator hub and radial conduit by the radially cooling of stator with wherein air is blown into axial cooling in the air gap by means of axial fan.
Then stator is divided into the radial air conduit that is formed by (normally straight) pad that is welded in place.Since axially relatively poor by the thermal conductivity of stator lasmination, so air conduit must repeat continually.Air-cooled shortcoming is that ventilation loss is quite big, and owing to has the air trunking stator to extend.Air trunking also may cause weak mechanical structure, particularly in having the described high-voltage generator of long tooth.
The for example water cooling system rather than the air cooling system that are used for high-voltage generator have such advantage: can eliminate the radial ventilation conduit, can obtain short motor when raising the efficiency.The water cooling system of stator that is used for large ac machines is usually based on hollow winding part, and promptly electric conductor is hollow, has the longitudinal duct that is used for cooling agent, combines with the cooling water pipe that axially is inserted in the stator yoke in some cases.Such structure is known, wherein uses along the aluminium block that direction inserts with even interval that extends axially of stator and cools off stator yoke.Yet such cooling support of no use directly cools off the example of stator tooth, because these stator tooths are to cool off indirectly by the water cooling of stator winding.
Think in the voltage range of 3-25kV, can be used for the coil of rotary generator with good effect manufacturing.
Yet the effort of the more high-tension generator of exploitation has been carried out for a long time.For example, by " the electric world (Electrical World) ", on October 15th, 1932, the 524-525 page or leaf, this is obvious.This piece article has described how to arrange the generator that is designed by Parson1929 for 33kV.The generator that produces 36kV voltage at Belgian Langerbrugge has also been described.Although this article has also been inferred the possibility of further increase magnitude of voltage, its development be subjected to these generators based on the restriction of notion.This mainly is the defective because of the insulation system of the impregnating varnish layer that wherein uses mica oil and paper in several layers that separate.
Reference is from the report of in April, 1984 from Electric Power Research Institute (Electric Power Research Institute), EPRI, EL-3391, the generator notion is taken in so that realize high voltage in generator, and purpose is a kind of like this generator to be connected on the power network and without intermediate transformer.Estimated a kind of like this scheme in this report, this scheme provides good efficiency gain and a large amount of financial benefit.Think that in 1984 might begin to develop the main cause that is directly connected to the generator on the power network is at this moment to have developed superconducting rotor.Sizable excitation capacity of superconduction field winding allows use to have enough, and the winding of the air gap of big thickness bears electric stress.
By think according to this scheme most promising notion, a kind of notion (so-called " monolithic tubular armature ") that has a magnetic circuit of winding of design, a kind ofly wherein enclose two conductor tubes in three insulating cylinders and total combines being connected to a notion on the iron core under the condition without tooth, estimate that the electric rotating machine that is used for high pressure can be directly connected to power network.This scheme requires main insulation must make enough thickly, with bearing net to net and net current potential over the ground.Except it needed superconducting rotor, a distinct disadvantage of the scheme that is proposed was also to need very thick insulation, and this has increased motor size.End coil must be with oil or freon insulation and cooling, so that be controlled at the highfield of end.Whole motor must seal airtightly, absorbs moisture to prevent liquid dielectric media from atmosphere.
Especially be in the article of " water and oil cooling turbogenerator TVM-300 " in magazine J.Elektrotechnika1970 the 1st phase 6-8 page head, at US4,429, in 244 " stator of generator ", and in Russ P file CCCP Patent 955369, some trials in a kind of new method that designs about synchronous generator have been described.
Water of describing in J.Eiektrotechnika and oil cooled synchronous generator are intended for use the voltage up to 20kV.A kind of new insulation system of being made up of oil/paper insulation thing described in article, and this might immerse stator in the oil fully.Can be used as cooling agent spontaneously, and simultaneously as insulant.For preventing that the oil in the stator from leaking outside to rotor, a dielectric oil shading ring is provided at inner surface place unshakable in one's determination.Stator winding is by the conductor manufacturing that has oval hollow shape, oil and paper insulation thing are housed.The coil sides that has insulation is fixed in the groove made from rectangular cross section by means of the wedge shape part.As cooling agent, oil not only is used in the hollow conductor but also be used in the cavity of stator wall.Yet such cooling system is accompanied by being connected of big gauging and electricity at end winding place.Heavy insulation also brings the radius of curvature of conductor to increase, and this size that causes the winding ledge again increases.
Above-mentioned US patent relates to a kind of stationary part of synchronous machine, and synchronous machine comprises the laminated sheet magnetic core that has the dovetail groove that is used for stator winding.Because the required insulation of stator winding weakens towards the inside of rotor, the rotor place is provided with the winding part that the most close neutral point is arranged, so all grooves are tapers.In addition, stationary part comprises the dielectric oil isolating cylinder of close inner surface unshakable in one's determination, compares with the motor that lacks this ring, and this tube can increase magnetization excitation requirement.Stator winding is by the oil compression cable manufacturing that has same diameter for each coil layer.All layers separate each other by means of the pad in the groove, and fix with the wedge shape part.Special feature about winding is that it comprises two so-called half windings that are connected in series.One of two and half windings are positioned at, are centered in insulating case.The conductor of stator winding by oil cooling on every side but.Have so that the shortcoming of heavy wool in system is, the danger of leakage is arranged, and may cause a large amount of cleaning works by malfunction.Insulating case is positioned at outer those of groove and is partly with a column part and a taper terminal of strengthening with the current-carrying layer, and its purpose is that control cable enters the electric field strength in the zone of end winding.
Obvious by CCCP 955369, in the another kind of the rated voltage of rising synchronous machine was attempted, oil cooled stator winding comprised the conventional high-tension cable that all layers is had same size.Cable places and forms the stator slot circular, that opening radially is set corresponding to the cross-sectional area of cable and the fixing and essential space of cooling agent.The different radial arrangement layers of winding are surrounded by insulated tube, and are fixed therein.The insulation spacer element is fixed on pipe in the stator slot.Because oil cooling is but, thus also need an interior dielectric collar, so that cooling agent is opened with interior air gap sealed-off.Shown structure does not have successively decreasing of insulation or stator slot.This structure demonstrates very narrow radially waist between different stator slots, this means a large amount of slot leakage flux that the magnetization of appreciable impact motor requires.
DE2917717 is illustrated in a cooling section that is used for coolant in a kind of motor.This section comprises the inside cooling duct in the section of being arranged in.
US3, the stator core that a plurality of cannelures are equipped with in 447,002 expressions wherein is furnished with the heat conduction object, and arranged tangential is in each groove one by one, and cooling water pipe is embedded in the cooling object.
US2, a kind of generator of 217,430 expressions has by cool off the device of the stator that is used for a kind of like this motor through the boiler water circulation of stator core.
According to the present invention, the direct cooling of tooth is necessary, and therefore cools off stator winding indirectly.Compare tooth with conventional generator also especially long, and this also makes the direct cooling of tooth necessitate.
The object of the present invention is to provide a kind of such structure of describing in foreword, this structure will allow the direct cooling of stator tooth, simultaneously the cable of the stator winding of cooling formation indirectly.Further developing in the following description that the present invention is favourable shows.
The present invention relates to a kind of structure that in the high-voltage motor of high-voltage alternating current generator and so on, is used for cooling off stator tooth and cools off stator winding indirectly.
That this structure comprises radially is that extend, electric insulation, and pass the pipe that stator tooth places ring to leave the certain axial distance of adjacent ring.This structure also comprises the radially extension cooling support that comprises the cooling water pipe that cooling agent circulates therein.The cooling support is to be inserted in the stator with the approximately uniform axial distance of conventional air trunking.All pipes extend along the whole radical length of stator tooth.
Concrete most preferred embodiment according to the present invention, semiconductor layer at least one, preferably two, have the thermal coefficient of expansion identical with solid insulator.Thereby realize conclusive benefit: can avoid defective, crack etc. when in winding, warm-up movement being arranged.
With reference to accompanying drawing the present invention will be described in more detail.
Fig. 1 schematically is illustrated in the stereogram that diametric(al) is passed the part that the stator of electric rotating machine takes out;
Fig. 2 represents the cross-sectional view according to high-tension cable of the present invention;
Fig. 3 schematically represents the sector of electric rotating machine;
Fig. 4 represents according to the first embodiment of the present invention;
Fig. 5 schematically represents according to a second embodiment of the present invention;
Fig. 6 a-6d represents the cross section according to each of four embodiment of cooling water pipe tooth of the present invention;
Fig. 7 represents according to a kind of cooling circuit of the present invention.
Fig. 1 represents a kind of part of motor, has wherein removed rotor more clearly to represent the structure of stator 1.The major part of stator 1 by a stator frame 2, one comprise stator tooth 4 stator core 3, and one limit a stator yoke outer yoke part 5 constitute.Stator also comprises a stator winding 6 of being made up of the high-tension cable that is arranged in space 7, and space 7 shapes resemble the bicycle chain (see figure 3), is formed between each independent stator tooth 4.In Fig. 3, stator winding 6 is only represented by its electric conductor.As seeing among Fig. 1, stator winding 6 all forms an end winding joint 8 in the both sides of stator 1.Understand also that by Fig. 3 the insulation of high-tension cable has several sizes, according to the radial position packet layout of cable in stator 1.
In bigger conventional motor, stator frame 2 is made up of a kind of weldable steel chip architecture usually.In large-size machine, stator core 3 is generally formed by the electrical sheet of 0.35mm, and electrical sheet is divided into a plurality of of axial length with about 50mm and folds, and they are separated by the 5mm air trunking that forms dividing plate each other.Yet, in motor according to the present invention, save air trunking.In large-size machine,, after this place the complete plate portion of each layer subsequently, thereby form every lamination sheet with generation stator core 3 with the right angle by the punch section 9 of appropriate size being assembled together to form a ground floor.All parts and dividing plate are kept together by the pressure supporting leg 10 of compaction pressure ring, finger piece or section (not shown).Two pressure supporting legs in Fig. 1, have only been represented.
Fig. 2 represents the cross-sectional view according to high-tension cable 11 of the present invention.High-tension cable 11 comprises multiply copper (Cu) line 12, such as having circular cross section.These strands 12 are arranged in the central authorities of high-tension cable 11.Around thigh 12 be one first semiconductor layer 13, and around first semiconductor layer 13 be an insulating barrier 14, crosslinked polyethylene (XLPE) insulant for example.Around insulating barrier 14 are one second semiconductor layers 15.Thereby notion in this application " high-tension cable " does not comprise the outer jointing jacket that surrounds this cable that is used for distribution usually.
Fig. 3 schematically represents a radial sector of motor, has the section 9 and the rotor pole 16 that has on the rotor 17 of motor of stator 1.If can see like that, stator winding 6 be arranged in the bicycle chain strip, be formed in the space 7 between each stator tooth 4.Each stator tooth 4 extends from outer yoke part 5 radial inward.
Fig. 4 represents the simplification view of first embodiment of the invention, a cooling water pipe 18 forms a cooling pipe ring in cooling support 19, cooling support 19 has and section 9 substantially the same shapes, and has tooth portion 20, and formation resembles the characteristic groove of bicycle chain between toothed portion 20.Figure 4 and 5 have been simplified to rectangle, so that show the principle of embodiment concisely.According to Fig. 3, by being connected on the import ring 22 and its other end, an end of cooling water pipe 18 is connected on the discharge ring 23, form a cooling pipe ring 21.
Thereby cooling agent in cooling water pipe 18 from the import ring 22 in the cooling support outside 24, flow into cooling support 19, and towards the end inflow of cooling off fixed support 25, from leading to tooth from tooth the space 26 of cooling water pipe 18 between the high-tension cable 27 that is formed at air gap and topmost here.This space is taken by a slot wedge shape part (not shown), and slot wedge shape part can be envisioned for otch at the transition of pipe, allows described pipe to pass through.Can also divide this slot wedge shape part and think that into about 30 little wedge shape parts canal curvature provides the position.The advantageous embodiment of cooling support can be among the present invention, and by the pipe that forms ring is subsequently curved the tubular cross-section that rectangle forms, the cooling pipe ring is for good and all cast at one with aluminium and covered.
Fig. 5 represents that the present invention second implements the simplification view of falling, a cooling water pipe 18 forms a cooling pipe ring in cooling support 19, cooling support 19 has and section 9 substantially the same structures, and has toothed portion 20, and formation resembles the characteristic groove of bicycle chain between toothed portion 20.According to Fig. 5, in this embodiment,, an end of cooling water pipe 18 is connected on the discharge ring 23 by being connected on the import ring 22 and its other end, form a cooling pipe ring 21.
Thereby cooling agent in cooling water pipe 18 from the import ring 22 in the cooling support outside 24, flow into cooling support 19, and towards the end inflow of cooling off fixed support 25, turn endways from cooling water pipe here, see arrow, and in same cooling fixed support to overhanging time, in next tooth, to form similar ring gear once more.
In this embodiment, can also be by the pipe production cooling support of crooked rectangular cross section.Then pipe is formed ring, the cooling pipe ring is for good and all cast at one with aluminium and is covered or be fixed on the middle girder steel with cast compound.The XLPE pipe of girder steel also can embed in the middle of having, and as comprising that the cooling support of stator profile suitably forms, the cooling support is separated by steel plate washer, and partially filled have filling compound, for example plastics of Gu Huaing.
Advantage according to the embodiment of Fig. 4 is, the bending radius that pipe obtains when turning back to same tooth like that among Fig. 5 is also wanted big bending radius.
As shown in Figures 4 and 5, the with dashed lines arrow is represented the adjacent cooling support that is connected in parallel for import and discharge ring.
Fig. 6 a-6d represents according to the different embodiment in the support bracket fastened cross section of the cooling of Fig. 4-5.Fig. 6 a represents that wherein steel cooling water pipe 18 has bent to the cross section that is essentially rectangle, and cooling water pipe has been embedded in the aluminium block 28 that a cover plate 29 is housed thereafter according to the support bracket fastened cross section of a kind of cooling that shows Fig. 4 of an advantageous embodiment.Aluminium block can also be with the two halves manufacturing that is fitted together around cooling water pipe.Fig. 6 b represents the support bracket fastened cross section of a kind of cooling according to Fig. 4, and the cooling water pipe 18 of tooth extends between two beams 30, and two beams 30 are steel preferably, rises between erecting stage at cooling water pipe and isolates and strengthen beam action.After the cooling water pipe assembling that has girder steel, form the pad of filling with cast compound 31 subsequently.Fig. 6 c represents the support bracket fastened cross section of a kind of cooling according to Fig. 5.In this implementation column, by the flexible hollow pad around a beam 30 (preferably steel) is placed a ring, and, after this remove hollow pad thereby form a tubular conduit 32 with cast compound 31 filling intermediate gaps, produce the cooling support.Fig. 6 d also represents the support bracket fastened cross section of a kind of cooling according to Fig. 5, and wherein XLPE tubing type flexible cooling water pipe 33 places the cooling pipe ring around a beam 30 (preferably steel).
The embodiment of the coolant in the cooling fixed support shown here can change in the scope of appending claims in many ways.Such as, the cast aluminium piece can be made two that have conduit, so that insert cooling water pipe steel or XLPE tubing type.The cross section of cooling water pipe can change from the circle to the ellipse, perhaps can be roughly rectangle.
Arrange a kind of external cooling circuit, see Fig. 7, wherein all cooling water pipes 18 all are connected on the cooling circuit 34 of a sealing, and cooling circuit 34 in the embodiment shown comprises a case 35 that comprises cooling agent 36, and cooling agent 36 can be water, hydrogen or other cooling agents that are used for the loop.Case 35 is equipped with an electrolyte level indicator that is used to control and monitor refrigerant level.Case 35 is also connected on two dispensing loop of being made up of an import ring 37 and discharge ring 38.Between import ring 37 and discharge ring 38, be furnished with a plurality of cooling supports 19 as schematically illustrating among Fig. 7, each support 19 comprises at least one cooling pipe ring 21.All cooling supports 19 are connected in parallel between import ring 37 and the discharge ring 38.Thereby cooling agent 36 is arranged to, simultaneously through being parallel-connected to each the cooling pipe ring 21 on the discharge ring 38, be recycled to a circulating pump 39 and a recursive filter 40 from import ring 37, through heat exchanger 41, for example heat-exchangers of the plate type returns import ring 37 then.Water with about 15 ℃ of temperature is supplied with through the interchanger filter (not shown) of interchanger pump 42 from water tank.Water is through the interchanger suction and return water tank.
Can comprise according to water cooling system of the present invention, for example be equipped with along the cooling support of the pipe of the every approximately 5cm insertion of whole stator.If the bonding stator piece, the spacing of then cooling off between the support can be greater than 5cm.
Since the cooling support must can support stator whole weight (if vertically installing), also to add pressure (total pressure is in the scope of 0.5MPa) from any pressure rings, so in the cooling support, will comprise a kind of mechanical support structure, as shown in Fig. 6 a-d.Cooling water pipe can be stainless, and perhaps they can be previous described polymer, for example XLPE pipe, Wirsbo-inPEX
, they have used steel plate washer as bending template direct heat bending on coldplate.Steel plate washer welds in the mode identical with conventional air cooling stator, and bears axial force in an identical manner.The XLPE pipe also can be flattened under about 130 ℃ temperature in stove, and then along with cover plate is pressed location thereon and correctly downwards.All plates then weld or bond.Importantly, cooling water pipe is " flat " and quite big, so that enough cooling surfaces are provided.Steel pipe can make littler than the XLPE pipe.By means of for example quartzy epoxy resin of filling, can make cast compound produce enough big heat conduction.Can fill with cast compound afterwards, as shown in previous like that.
The invention is not restricted to embodiment as an example.Several within the scope of the invention improvement are feasible.Thereby cooling water pipe can be metal or polymer.Coldplate also can be the cast aluminium piece.A kind of interested possibility also is stator lasmination to be used as supporting construction, and to use cast compound in remaining space.
Claims (19)
1. electric rotating machine, comprise one that be wound with high-tension cable and the stator (1) of the stator tooth (4) that extends from outer yoke part (a 5) radial inward is housed, this electric rotating machine is characterised in that, this motor comprises a winding, this winding comprises an insulation system, this insulation system comprises at least two semiconductor layers, and every layer constitutes an equipotential surface in essence, and is included in the solid insulator of settling between it; Its feature is that also at least one stator tooth (4) is connected at least one cooling water pipe (18), and cooling water pipe (18) radially extends in stator tooth (4), and is connected on the cooling circuit (34) that wherein is furnished with coolant circulating (36); And its feature also is, the major part at least that cooling is arranged to occur in stator tooth (4) extends axially on the part.
2. motor according to claim 1 is characterized in that, in all layers at least one deck have and the essentially identical thermal coefficient of expansion of solid insulator.
3. according to each described motor of claim 1-2, it is characterized in that, cooling water pipe (18) is arranged to penetrate a cooling fixed support (25) from outer yoke part (5) and extends, and pass to the end of next cooling fixed support (25) in the end of cooling fixed support (25), and then pass this cooling fixed support (25) to outer yoke part (5), form a cooling pipe ring.
4. according to each described motor of claim 1-3, it is characterized in that, cooling water pipe (18) is arranged to penetrate a cooling fixed support (25) from outer yoke part (5) and extends, and in the turning of the end of cooling fixed support (25), and return and pass described cooling fixed support (25), form a cooling pipe ring (21) to outer yoke part (5).
5. according to claim 3 or each described motor of claim 4, it is characterized in that cooling pipe ring (21) is arranged at least one shape and the essentially identical cooling support of stator cross section (19).
6. motor according to claim 5 is characterized in that, cooling water pipe (18) is arranged to casting in cooling support (19).
7. motor according to claim 6 is characterized in that, the axial distance between the cooling support (19) is 200mm.
8. according to each described motor of claim 3-7, it is characterized in that cooling pipe ring (21) is equipped with at least one beam (30) that is arranged in the ring.
9. the method for the electric rotating machine of high pressure stator winding is equipped with in a cooling, it is characterized in that, by in cooling circuit (34) through passing the cooling duct coolant circulating (36) that stator tooth (4) radially extends, cool off stator.
10. method according to claim 9 is characterized in that, cooling agent (36) is circulated in a loop, and the heat exchanger (41) that comes cooling circuit (34) from the water of water tank is used through one in this loop.
11., it is characterized in that the current potential of described ground floor equals the current potential of conductor substantially according to each described motor of claim 1-8.
12. motor according to claim 11 is characterized in that, the described second layer is arranged to equipotential surface around described conductor of basic comprising.
13. motor according to claim 12 is characterized in that, the described second layer is connected on the predetermined potential.
14. motor according to claim 13 is characterized in that, described predetermined potential is an earth potential.
15., it is characterized in that at least two adjacent layers have the basic thermal coefficient of expansion that equates according to each described motor of claim 11-14.
16. according to claim 1-8 each or each described motor of claim 11-15, it is characterized in that described current comprises multiply, only the described thigh of minority does not have insulated from each other.
17., it is characterized in that each layer in described three layers is fixedly attached on the adjacent layer along whole connection surface basically according to claim 1-8 each or each described motor of claim 11-16.
18. one kind has a motor that is used for the magnetic circuit of high pressure, this magnetic circuit comprises a magnetic core and a winding, and this motor is characterised in that described winding is formed by a cable, and said cable comprises one or more currents, and each conductor has multiply; An inner semiconductor layer that provides around each conductor; The insulating barrier of a solid insulating material that provides around described inner semiconductor layer; An outer semiconductor layer that provides around described insulating barrier is provided.
19. motor according to claim 18 is characterized in that, described cable also comprises a metal screen layer and a sheath.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE96020797 | 1996-05-29 | ||
| SE9602088A SE9602088D0 (en) | 1996-05-29 | 1996-05-29 | Radial cooling |
| SE96020888 | 1996-05-29 | ||
| SE9602079A SE9602079D0 (en) | 1996-05-29 | 1996-05-29 | Rotating electric machines with magnetic circuit for high voltage and a method for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1220037A true CN1220037A (en) | 1999-06-16 |
Family
ID=26662643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97195051.2A Pending CN1220037A (en) | 1996-05-29 | 1997-05-27 | Rotating electrical machine with radial cooling |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0910886A1 (en) |
| JP (1) | JP2000511394A (en) |
| CN (1) | CN1220037A (en) |
| AU (1) | AU3052797A (en) |
| BR (1) | BR9709366A (en) |
| CA (1) | CA2261638A1 (en) |
| EA (1) | EA001129B1 (en) |
| PL (1) | PL330197A1 (en) |
| WO (1) | WO1997045915A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105993116A (en) * | 2014-02-13 | 2016-10-05 | 丰田自动车株式会社 | Stator for rotary electric machine |
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
| CN108023442A (en) * | 2017-12-22 | 2018-05-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of water-cooling structure of motor |
| CN111434008A (en) * | 2017-12-04 | 2020-07-17 | 马勒国际有限公司 | Electric machine, in particular for a vehicle |
| CN112585845A (en) * | 2018-06-27 | 2021-03-30 | 通用电气公司 | Rotating armature for a wind turbine generator with a superconducting stator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1944852B1 (en) | 2006-12-22 | 2009-09-23 | Abb Ab | Liquid-cooled machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2217430A (en) * | 1938-02-26 | 1940-10-08 | Westinghouse Electric & Mfg Co | Water-cooled stator for dynamoelectric machines |
| SE318939B (en) * | 1965-03-17 | 1969-12-22 | Asea Ab | |
| DE2917717A1 (en) * | 1979-05-02 | 1980-11-27 | Kraftwerk Union Ag | Turbogenerator stator cooling segments - have parallel channels extending from to distributor to zone of stator teeth |
| US5036165A (en) * | 1984-08-23 | 1991-07-30 | General Electric Co. | Semi-conducting layer for insulated electrical conductors |
| US4853565A (en) * | 1984-08-23 | 1989-08-01 | General Electric Company | Semi-conducting layer for insulated electrical conductors |
-
1997
- 1997-05-27 AU AU30527/97A patent/AU3052797A/en not_active Abandoned
- 1997-05-27 BR BR9709366-1A patent/BR9709366A/en not_active Application Discontinuation
- 1997-05-27 PL PL97330197A patent/PL330197A1/en unknown
- 1997-05-27 WO PCT/SE1997/000894 patent/WO1997045915A1/en not_active Application Discontinuation
- 1997-05-27 EA EA199801056A patent/EA001129B1/en not_active IP Right Cessation
- 1997-05-27 EP EP97925370A patent/EP0910886A1/en not_active Withdrawn
- 1997-05-27 JP JP09542209A patent/JP2000511394A/en active Pending
- 1997-05-27 CA CA002261638A patent/CA2261638A1/en not_active Abandoned
- 1997-05-27 CN CN97195051.2A patent/CN1220037A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105993116A (en) * | 2014-02-13 | 2016-10-05 | 丰田自动车株式会社 | Stator for rotary electric machine |
| CN105993116B (en) * | 2014-02-13 | 2019-04-09 | 丰田自动车株式会社 | Stator for rotating electric machine |
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
| CN106655563B (en) * | 2016-12-01 | 2018-10-26 | 华中科技大学 | A kind of motor cooling and the inorganic shell motor with the structure |
| CN111434008A (en) * | 2017-12-04 | 2020-07-17 | 马勒国际有限公司 | Electric machine, in particular for a vehicle |
| CN108023442A (en) * | 2017-12-22 | 2018-05-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of water-cooling structure of motor |
| CN112585845A (en) * | 2018-06-27 | 2021-03-30 | 通用电气公司 | Rotating armature for a wind turbine generator with a superconducting stator |
| CN112585845B (en) * | 2018-06-27 | 2024-04-26 | 通用电气可再生能源西班牙有限公司 | Rotary armature for wind turbine generator with superconducting stator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997045915A1 (en) | 1997-12-04 |
| PL330197A1 (en) | 1999-04-26 |
| CA2261638A1 (en) | 1997-12-04 |
| EA199801056A1 (en) | 1999-08-26 |
| JP2000511394A (en) | 2000-08-29 |
| BR9709366A (en) | 2000-01-11 |
| EP0910886A1 (en) | 1999-04-28 |
| EA001129B1 (en) | 2000-10-30 |
| AU3052797A (en) | 1998-01-05 |
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