CN110212700A - A kind of cooling air duct structure of doubly-fed wind turbine - Google Patents
A kind of cooling air duct structure of doubly-fed wind turbine Download PDFInfo
- Publication number
- CN110212700A CN110212700A CN201910346466.XA CN201910346466A CN110212700A CN 110212700 A CN110212700 A CN 110212700A CN 201910346466 A CN201910346466 A CN 201910346466A CN 110212700 A CN110212700 A CN 110212700A
- Authority
- CN
- China
- Prior art keywords
- stator
- rotor
- air
- cooling air
- doubly
- 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
- 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
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating 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
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention belongs to wind-driven generator ventilating system technical fields, are related to a kind of cooling air duct structure of doubly-fed wind turbine, the direct-cooled bellows chamber including base and above base；Rotor yoke is equipped with several axial ventilation holes, and direct-cooled bellows chamber is provided with air inlet and air outlet；Rotor core is equipped with several rotor radial ventilating ducts communicated with axial ventilation hole, and stator core is equipped with stator radial ducts identical with rotor radial ventilating duct interval；Axial ventilation hole, rotor radial ventilating duct, air-gap, stator radial ducts, air outlet form a cooling air duct；The end of stator and rotor winding, air-gap, the radial ducts of stator and rotor core end, air outlet form another cooling air duct.By the design to entire cooling air duct structure, the hot and cold air before making heat transfer is individually isolated in closed region, intake air temperature will not be caused to increase because of heat transfer, and cooling efficiency is high.
Description
Technical field
The invention belongs to wind-driven generator ventilating system technical fields, are related to the cooling air duct knot of combined ventilation system
The cooling air duct structure of structure more particularly to a kind of doubly-fed wind turbine.
Background technique
With the development and Energy restructuring of China's renewable energy, reduces wind-powered electricity generation industry cost and have become necessarily to become
Gesture, and vital task is to promote the decline of wind-powered electricity generation industry cost, and the year two thousand twenty realizes the same valence of wind fire, while under the cost of photovoltaic industry
Drop, also allows wind-powered electricity generation industry to feel more pressure.In design of electrical motor, reasonable electromagnetic load parameter, the type of cooling, ventilating system are chosen
Etc. schemes become generator and reduce the key of cost.
Existing motor air cooling channel loop structure is referring to shown in Fig. 1-2, mainly by direct-cooled bellows chamber, base, end cap
Assembly, internal bearing cover, shaft, ventilating duct, wind scooper, stator and rotor air-gap, direct-cooled bellows chamber air exhaust passage composition.It includes
Cooling air duct is as follows: cooling air enters cold wind area from motor both ends, divides three strands to enter hot wind area.1. flowing through rotor yoke ventilation
Hole-rotor radial ventilating duct-air-gap-stator radial ducts-air outlet discharge.2. flowing through stator and rotor winding overhang-air
A part of radial ducts of gap-core end-air outlet discharge.3. flowing through stator winding end-former ventilation hole-stator core
Surface-air outlet discharge.
Existing motor air cooling channel loop structure is that air-flow is divided into three strands to enter air-gap, and aweather through iron core diameter
Road or iron core surface ventilating duct realize the cooling to motor into air outlet.Since the flowing of the structural gap is mainly by turning
The rotation forces air flowing of son, hot wind area C pressure are higher than cold wind area A, B, will lead to hot wind from former ventilating duct and enter cold wind
Area A, B so that the air themperature into cold wind area A, B increases, and then cause to enter air themperature axial, in radial ducts
It increases, the heat that motor generates cannot all be taken away, exchange capability of heat decline.Moreover, the temperature sensing of the structure winding overhang
After device failure, motor need to disintegrate replacement, higher cost.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of cooling wind of doubly-fed wind turbine is provided
Line structure, the cooling air duct structure, former eliminate the design of former ventilating duct, and processing technology is simple；Generator both ends
Air inlet eliminates the design of the components such as wind scooper, ventilating duct, greatly simplifies cooling circuit component, at low cost, simple process.
To achieve the goals above, the present invention provides the following technical scheme that
The cooling air duct structure of this doubly-fed wind turbine, comprising: alternator shaft, rotor core, stator core, sky
Air gap, former, end cap, internal bearing cover, base and the direct-cooled bellows chamber above base；Rotor yoke is equipped with several axial ventilations
Hole, the direct-cooled bellows chamber are provided with air inlet and air outlet；The rotor core, which is equipped with, several to be communicated with axial ventilation hole
Rotor radial ventilating duct, the stator core are equipped with stator radial ducts identical with rotor radial ventilating duct interval；Institute
It states axial ventilation hole, rotor radial ventilating duct, air-gap, stator radial ducts, air outlet and forms a cooling air duct；It is described
The end of stator and rotor winding, air-gap, the radial ducts of stator and rotor core end, air outlet form another cooling wind
Road.
Further, the stator radial ducts of the stator core, in the rotor radial ventilating duct of the rotor core
Portion is provided with ventilation channel plate, and the ventilation channel plate is that the ventilation channel plate with multiple leaflet constructs is mentioned for pushing air to flow
High heat exchange efficiency.
Further, the end of the stator winding is provided with temperature sensor.
Further, the base is the box base with arc flow-guiding structure, and arc flow-guiding structure can reduce wind
Resistance improves heat exchange efficiency.
Further, the former is installed on base, and the former eliminates the design of former ventilating duct, by generator
The heat of generation is isolated in the region C an of relative closure；Hot and cold air before heat exchange is individually isolated in closed
Region, hot-air may not flow into cold air zone, guarantee that the cooling air temperature for entering generator is invariable, without because
Intake air temperature is caused to increase for heat transfer, cooling efficiency is high.
Further, the air outlet of the direct-cooled bellows chamber is in horn-like, the design of the horn-like structure, windage at air outlet
It is small, it is conducive to air draft.
Compared with prior art, technical solution provided by the invention includes following the utility model has the advantages that the doubly-fed wind turbine
Cooling air duct structure, by the design to entire cooling air duct structure, the hot and cold air before making heat exchange is individually isolated
In the region of relative closure, hot-air may not flow into cold air zone, guarantee that the cooling air temperature for entering generator is constant
It is constant, without because heat transfer changes and intake air temperature is caused to increase, cooling efficiency is high.
In addition, the cooling air duct structure of the doubly-fed wind turbine, the air inlet at generator both ends eliminate wind scooper, lead
The components such as air duct greatly simplify cooling circuit component, and the former at base both ends eliminates ventilating duct, and production cost is low, technique is simple
It is single；Motor does not have to disintegrate after the temperature sensor fault of stator winding end, easy to maintain；Pass through the outlet air to direct-cooled bellows chamber
Mouth carries out horn-like design, so that windage is small at air outlet, is conducive to air draft.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and is used to explain this together with specification
The principle of invention.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without any creative labor, is also possible to obtain other drawings based on these drawings.
Fig. 1 is existing motor vertical section inner ventilation cooling circuit structural schematic diagram；
Fig. 2 is existing electrical axis cross-sectional internal ventilating and cooling loop structure schematic diagram；
Fig. 3 is cooling air duct structural representation inside the motor vertical section provided by the present invention for doubly-fed wind turbine
Figure；
Fig. 4 is the motor axial direction cross-sectional internal cooling air duct structural representation provided by the present invention for doubly-fed wind turbine
Figure；
Fig. 5 is the cooling air duct geometrical model figure provided by the present invention for doubly-fed wind turbine；
Fig. 6 is provided by the present invention for each ventilating duct profile of flowrate of stator core in doubly-fed wind turbine
Fig. 7 is the motor sectional pressure distribution map provided by the present invention for doubly-fed wind turbine；
Fig. 8 is the motor section velocity contour provided by the present invention for doubly-fed wind turbine；
Fig. 9 is the motor section temperature distribution map provided by the present invention for doubly-fed wind turbine.
Wherein: 1 is alternator shaft；2 be former；3 be base；4 be direct-cooled bellows chamber；5 be air inlet；6 be air outlet；7
For rotor radial ventilation hole；8 be stator radial air openings；9 be ventilation channel plate；10 be air-gap；11 be axial ventilation road；12
For rotor core；13 be stator core；14 be end cap；15 be internal bearing cover；16 be former ventilating duct.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they are only and appended power
The example of structure be described in detail in sharp claim, that some aspects of the invention are consistent.
In order to make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawings and embodiments
Present invention is further described in detail.
Embodiment
Referring to shown in Fig. 3-4, the present invention provides alternator shaft 1, rotor core 12, stator core 13, air-gap 10,
Former 2, end cap 14, internal bearing cover 15, base 3 and the direct-cooled bellows chamber 4 above base 3；Rotor yoke is equipped with several axial directions
Ventilation hole 11, direct-cooled bellows chamber 4 are provided with air inlet 5 and air outlet 6；Rotor core 12 is equipped with several with 11 phase of axial ventilation hole
Logical rotor radial ventilating duct 7, stator core 13, which is equipped with, is spaced identical stator radial ducts with rotor radial ventilating duct 7
8；Axial ventilation hole 11, rotor radial ventilating duct 7, air-gap 10, stator radial ducts 8, air outlet 6 form a cooling wind
Road；The end of stator and rotor winding, air-gap 10, the radial ducts of stator and rotor core end, air outlet 6 formed another it is cold
But wind path.
Further, the stator radial ducts 8 of the stator core 13, the rotor core 12 rotor radial ventilation
The inside in road 7 is provided with ventilation channel plate 9.Preferably, ventilation channel plate 9 is the ventilation channel plate with blade construction, for pushing
Air flowing, improves heat exchange efficiency.
Further, the end of stator winding is provided with temperature sensor.
Further, base 3 is the box base with arc flow-guiding structure, and arc flow-guiding structure can reduce windage,
Improve heat exchange efficiency.
Further, former 2 is installed on base 3, and former 2 is used to for the heat that generator generates being isolated in one relatively
In closed region C；Former 2 passes through the design for cancelling former ventilating duct 16, and the cold air before making heat exchange is individually isolated in envelope
In region A, the B closed, hot-air is individually isolated in closed region C, and hot-air may not flow into cold air zone, guarantees to enter hair
Cooling air temperature inside motor is invariable, without because heat transfer causes intake air temperature to increase, cooling efficiency is high.
And former 2 cancels the design of former ventilating duct 16, reduces the production cost of former 2, simplifies production technology.
Further, the air outlet of direct-cooled bellows chamber 4 is in horn-like, the design of the horn-like structure, and windage is small at air outlet,
Conducive to air draft.
Provided by the present invention for the cooling air duct structure of doubly-fed wind turbine, it is contemplated that existing ventilating and cooling circuit
The craftsmanship of disadvantage and maintenance of motor obtains combined ventilation system cooling air duct by Finite Element Simulation Analysis, verification experimental verification
Structure.The combined ventilation system cooling air duct structure, mainly include direct-cooled bellows chamber 4, the box base with arc water conservancy diversion,
It passes, the assembly of non-drive end cap, the former 2 without former ventilating duct 16, the ventilation channel plate with blade construction, stator and rotor iron core line
Circle etc..Its specific working principle is as follows:
Motor work when, A, B area cooling air respectively from motor both ends air inlet entrance after, be divided to two strands 1. 2. to hair
Hot part is cooled down.As shown in Figure 3, Figure 4, wherein one cooling air flows through the axial ventilation hole 11- rotor of rotor yoke
The air outlet 6 of the direct-cooled bellows chamber 7 of radial ducts 7- air-gap 10- stator radial ducts 8- is discharged；Another burst of cooling air stream
Outlet air through stator and rotor winding overhang-air-gap 10- stator and rotor core end direct-cooled bellows chamber 7 of a part of radial ducts-
Mouth 6 is discharged.
To sum up, the cooling air duct structure design of the combined ventilation system, has axially and radially two kinds of ventilating ducts concurrently, and heat is handed over
The hot and cold air of front and back is changed respectively two mutually independent closed areas, i.e. cold air is individually isolated in closed region A, B
Interior, hot-air is individually isolated in closed region C, and hot-air may not flow into cold air zone, guarantees to enter cold inside motor
But air themperature is invariable, without because heat transfer causes intake air temperature to increase, cooling efficiency is high.Generator both ends
Air inlet eliminates the components such as wind scooper, ventilating duct, enormously simplifies cooling circuit component, and the former 2 on base 3 is using no width
The design of plate ventilating duct 16, at low cost, simple process, and also motor does not have to disintegrate after the temperature sensor fault of stator end,
It is easy to maintain.
Finally, in order to verify the cooling effect of the cooling air duct structure of the combined ventilation system, to the cooling air duct knot
The generator of structure carries out three-dimensional modeling, carries out flow field-Finite Element Analysis on Temperature Field using Ansys, referring to Fig. 5-9:
To meet time and the space requirement of simulation analysis, while it being able to satisfy engineering the required accuracy again to the electrical engineering mould
Type is simplified, and geometrical model is obtained, referring to Fig. 5；Consider motor operation operating condition, select suitable body fitted anisotropic mesh density and
Corresponding turbulence model carries out grid dividing, and the materials such as insulating materials, stator and rotor conductor, stator and rotor iron core, air are respectively set
Expect attribute, inputs under operating condition and calculated after the loss of electric machine: each spot temperature distribution of motor, referring to table 1.
1 motor each section Temperature Distribution of table
From upper table analysis it is found that motor maximum temperature appears in electric machine stator iron, maximum temperature is 112.81 DEG C, depending on
Subcoil mean temperature is higher, is 98.58 DEG C, and stator coil average temperature rising is 58.58K.
For each ventilating duct flow distribution of stator core referring in Fig. 6: Fig. 6, abscissa is each ventilating duct of stator core (from transmission
Hold to non-transmision end and arrange), ordinate is flow (kg/s).Analysis is it is found that air inlet side ventilating duct flow (1-8 from the graph
It is a) it is above outlet air side ventilation hole flow (11-18).
In addition, motor is 1.83kg/s by the flow that rotor rotation obtains, air inlet average speed is 0.77m/s, empty
In 16Pa or so, air outlet average speed is 4.97m/s for the pressure drop of air filter.
Fig. 7 is the motor sectional pressure distribution map provided by the present invention for doubly-fed wind turbine, as can be seen from Figure 7
Motor axially each sectional pressure distribution, it can be seen that air pressure is maximum at rotor outer circle superficial air gap, hot wind in the middle part of motor
Pressure opposite end cold wind area, area pressure is higher, and two ends of rotor portion air pressure is relatively small.
Fig. 8 is the motor section velocity contour provided by the present invention for doubly-fed wind turbine, as can be seen from Figure 8
The axial each section VELOCITY DISTRIBUTION of motor, it can be seen that air velocity is maximum at rotor outer circle superficial air gap, and two ends of rotor portion is empty
Gas velocity is relatively small.
Fig. 9 is the motor section temperature distribution map provided by the present invention for doubly-fed wind turbine, as can be seen from Figure 9
Axially each section temperature distribution, the temperature that can be seen that stator core 13 from entire motor temperature distribution map are relatively higher than motor
The maximum temperature point of the temperature of rotor core 12, stator core 13 is deflected away from the middle part of motor at the iron core in air port 6；Stator coil temperature
Degree be relatively higher than rotor coil temperature, stator coil maximum temperature point is deflected away from the middle part of motor on the winding copper wire of air port, iron core and
Temperature distribution is non-uniform for coil two sides, and air side temperature is obviously higher, and reason is motor air inlet air quantity relatively larger than outlet air
Side, each ventilating duct flow distribution of stator core are uneven.It is computed, when environment temperature is 40 DEG C, the mean temperature of stator winding
98.58 DEG C, average temperature rising is 58.58 DEG C, meets design requirement.
In addition, the doubly-fed wind turbine to the combined ventilation system cooling air duct structure carries out after finalization of the manufacture
Nominal load temperature rise test.Generator is under rated speed, and Operation at full power 4h or so, temperature rise reaches stationary value, measures stabilization
Stator winding temperature rise average value is 61.8K under temperature rise, and the stator winding average out to 58.58k obtained by FEM calculation, accidentally
Difference is not more than 5K, meets design requirement.
By testing the comparison with simulation result, the reasonable of the combined ventilation system cooling air duct structure is not illustrated only
Property, while the feasibility and accuracy of the structure simulation analysis method are also shown, it is designed for generator and temperature field analysis is long-pending
Experience is tired out.
The above is only a specific embodiment of the invention, is made skilled artisans appreciate that or realizing this hair
It is bright.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.
It should be understood that the invention is not limited to the above-mentioned contents having been described, and its model can not departed from
It encloses and carry out various modifications and change.The scope of the present invention is limited only by the attached claims.
Claims (7)
1. a kind of cooling air duct structure of doubly-fed wind turbine, comprising: alternator shaft (1), rotor core (12), stator iron
The heart (13), air-gap (10), former (2), end cap (14), internal bearing cover (15), base (3) and be located at base (3) above it is straight
Cold wind packet (4)；It is characterized in that, rotor yoke is equipped with several axial ventilation holes (11), the direct-cooled bellows chamber (4) is provided with air inlet
Mouth (5) and air outlet (6)；The rotor core is equipped with several rotor radial ventilating ducts communicated with axial ventilation hole (11)
(7), the stator core, which is equipped with, is spaced identical stator radial ducts (8) with rotor radial ventilating duct (7)；The axial direction
Ventilation hole (11), rotor radial ventilating duct (7), air-gap (10), stator radial ducts (8), air outlet (6) formation one are cold
But wind path；The end of the stator and rotor winding, air-gap (10), the radial ducts of stator and rotor core end, air outlet (6)
Form another cooling air duct.
2. the cooling air duct structure according to claim 1 for doubly-fed wind turbine, which is characterized in that the stator
The stator radial ducts (8) of iron core (13), the inside of the rotor radial ventilating duct (7) of the rotor core (12) are provided with
Ventilation channel plate (9).
3. the cooling air duct structure according to claim 2 for doubly-fed wind turbine, which is characterized in that the ventilation
Frid (9) is the ventilation channel plate with multiple leaflet constructs.
4. the cooling air duct structure according to claim 1 for doubly-fed wind turbine, which is characterized in that the stator
The end of winding is provided with temperature sensor.
5. the cooling air duct structure according to claim 1 for doubly-fed wind turbine, which is characterized in that the base
It (3) is the box base with arc flow-guiding structure.
6. the cooling air duct structure according to claim 1 for doubly-fed wind turbine, which is characterized in that the former
(2) it is installed on base (3), the heat that generator generates is isolated in the C of region by the former (2).
7. the cooling air duct structure according to claim 1 for doubly-fed wind turbine, which is characterized in that described direct-cooled
The air outlet (6) of bellows chamber (4) is in horn-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346466.XA CN110212700A (en) | 2019-04-26 | 2019-04-26 | A kind of cooling air duct structure of doubly-fed wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346466.XA CN110212700A (en) | 2019-04-26 | 2019-04-26 | A kind of cooling air duct structure of doubly-fed wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110212700A true CN110212700A (en) | 2019-09-06 |
Family
ID=67786380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910346466.XA Pending CN110212700A (en) | 2019-04-26 | 2019-04-26 | A kind of cooling air duct structure of doubly-fed wind turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110212700A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649737A (en) * | 2019-11-12 | 2020-01-03 | 卧龙电气南阳防爆集团股份有限公司 | Large-scale box type variable-frequency variable-speed synchronous brushless excitation generator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350543A (en) * | 2008-09-12 | 2009-01-21 | 永济新时速电机电器有限责任公司 | Low-temperature lifting wind power generator |
| CN102185420A (en) * | 2011-05-13 | 2011-09-14 | 东方电气（乐山）新能源设备有限公司 | Cooling system of 2MW wind driven generator |
| CN102377286A (en) * | 2011-09-29 | 2012-03-14 | 江苏金风风电设备制造有限公司 | Motor and cooling systeem thereof |
| CN107359727A (en) * | 2017-09-07 | 2017-11-17 | 东方电气集团东方电机有限公司 | A kind of support for being advantageous to motor ventilation and the motor using the support |
| CN207082994U (en) * | 2017-08-01 | 2018-03-09 | 卧龙电气集团股份有限公司 | A kind of high-power nine phases asynchronous motor |
| CN109245429A (en) * | 2018-10-31 | 2019-01-18 | 中车永济电机有限公司 | Protection bellows chamber for air directly cooled machine |
-
2019
- 2019-04-26 CN CN201910346466.XA patent/CN110212700A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350543A (en) * | 2008-09-12 | 2009-01-21 | 永济新时速电机电器有限责任公司 | Low-temperature lifting wind power generator |
| CN102185420A (en) * | 2011-05-13 | 2011-09-14 | 东方电气（乐山）新能源设备有限公司 | Cooling system of 2MW wind driven generator |
| CN102377286A (en) * | 2011-09-29 | 2012-03-14 | 江苏金风风电设备制造有限公司 | Motor and cooling systeem thereof |
| CN207082994U (en) * | 2017-08-01 | 2018-03-09 | 卧龙电气集团股份有限公司 | A kind of high-power nine phases asynchronous motor |
| CN107359727A (en) * | 2017-09-07 | 2017-11-17 | 东方电气集团东方电机有限公司 | A kind of support for being advantageous to motor ventilation and the motor using the support |
| CN109245429A (en) * | 2018-10-31 | 2019-01-18 | 中车永济电机有限公司 | Protection bellows chamber for air directly cooled machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649737A (en) * | 2019-11-12 | 2020-01-03 | 卧龙电气南阳防爆集团股份有限公司 | Large-scale box type variable-frequency variable-speed synchronous brushless excitation generator |
| CN110649737B (en) * | 2019-11-12 | 2024-05-17 | 卧龙电气南阳防爆集团股份有限公司 | Large-scale box-type variable-frequency variable-speed synchronous brushless excitation generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102290922B (en) | Double-fed wind generator | |
| CN204013084U (en) | A kind of ventilation cooling structure of absolutely empty cooling type wind driven generator | |
| CN202145603U (en) | Ventilation structure of air cooling AC motor | |
| CN105971674A (en) | Gas turbine rim sealing structure and method | |
| CN212033942U (en) | Motor and wind generating set | |
| CN207559785U (en) | A kind of motor of stator with ventilation slot mouth | |
| CN110212700A (en) | A kind of cooling air duct structure of doubly-fed wind turbine | |
| CN102983678A (en) | Electric generator cooling wind path structure | |
| CN202183693U (en) | Double-fed wind driven generator | |
| CN201813261U (en) | Generator and cooling system thereof | |
| CN105422194B (en) | The cooling flowing path of turbogenerator stator blade | |
| CN105990944B (en) | A kind of air-cooled steam turbine generator wind path structure | |
| CN207664813U (en) | A kind of totally enclosed motor and its air-cooled impeller and the electric vehicle for using the motor | |
| CN109067073A (en) | The method of totally-enclosed forced air-cooled structure permanent magnet traction motor radiator structure optimization | |
| CN205335993U (en) | Air cooling aerogenerator's stator core and rotor core structure | |
| CN206461450U (en) | A kind of interior wind path structure of asynchronous machine | |
| CN105452649A (en) | Wind power generation tower | |
| CN107834774A (en) | A kind of motor of stator with ventilation slot mouth | |
| CN205791824U (en) | The stator vent segment of front wind-guide | |
| CN201810495U (en) | Solar wind driven generator | |
| CN201717736U (en) | Large air-cooling turbogenerator with circumferential mixed ventilation cooling structure | |
| CN105275746A (en) | Self-made wind power generation system | |
| CN104564538B (en) | Heat abstractor and wind power generating set for wind power generating set | |
| CN209001743U (en) | Air cooling device of generator set | |
| CN208939757U (en) | A kind of inside wind loop structure of enclosed motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190906 |