CN211629952U - 10MW half-direct-drive permanent magnet synchronous wind driven generator - Google Patents
10MW half-direct-drive permanent magnet synchronous wind driven generator Download PDFInfo
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- CN211629952U CN211629952U CN202020250887.0U CN202020250887U CN211629952U CN 211629952 U CN211629952 U CN 211629952U CN 202020250887 U CN202020250887 U CN 202020250887U CN 211629952 U CN211629952 U CN 211629952U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a 10MW semi-direct-drive permanent magnet synchronous wind driven generator, which comprises a generator body, wherein a stator of the generator body adopts a double-winding design, namely, a stator winding comprises two sets of mutually independent and mutually noninterfere three-phase windings; the rotor overall structure of the generator body is designed to be a single cantilever support, an embedded rotor magnetic yoke is adopted, and a high-strength neodymium iron boron permanent magnet is embedded into the rotor magnetic yoke; the bearing unit of the generator body adopts a single cantilever structure and adopts a double-bearing structure design of a ball and a column, wherein the ball bearing mainly bears the axial force generated by the rotor, and the column bearing mainly bears the load of the whole rotor; the cooling system of the generator body is provided with two sets which are respectively a stator cooling system and a rotor cooling system, wherein the stator cooling system adopts a water jacket cooling mode, and the rotor cooling system adopts an air-water cooling mode. The utility model has the advantages of compact and reliable structure, large capacity, light weight, high generated energy and the like.
Description
Technical Field
The utility model relates to a large-scale half technical field who directly drives permanent magnet synchronous generator especially indicates a 10MW half directly drives permanent magnet synchronous wind power generator.
Background
At present, the domestic offshore wind power market obtains vigorous development, in order to respond to the national renewable energy development plan, each whole plant vigorously develops a large-scale wind generating set, 5MW, 7MW, 8MW and other machine types are continuously emerged like bamboo shoots in the spring after rain, most of large-scale generator sets developed by domestic wind power enterprises are direct-drive machine types, and the direct-drive machine types are directly connected with a permanent magnet synchronous generator without a speed-raising gear box due to the fact that a wind wheel is directly connected with the permanent magnet synchronous generator, and the fault rate of the machine sets is greatly reduced. However, the multi-pole low-speed generator is bulky and heavy, which makes installation and maintenance more difficult, and under the influence of these factors, the capacity of the generator is also limited, and the maximum capacity is only 8 MW.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at solving transportation and assembly difficulty and the capacity restriction scheduling problem that directly drives type generator volume is huge, the heaviness leads to, a compact structure is reliable, capacious, light in weight's 10MW half directly drives synchronous aerogenerator of permanent magnetism, this model generator is under the capacity than 8MW (directly driving the type) increase 2 MW's the condition, volume, weight all are less than 8MW model, the utilization ratio of material has not only been improved to the infrastructure for the wind field has reduced a large amount of costs.
In order to achieve the above object, the present invention provides a technical solution: a10 MW half direct-drive permanent magnet synchronous wind driven generator comprises a generator body, wherein a stator of the generator body adopts a double-winding design, namely, a stator winding comprises two sets of mutually independent and mutually noninterfere three-phase windings; the rotor overall structure of the generator body is designed to be a single cantilever support, an embedded rotor magnetic yoke is adopted, and a high-strength neodymium iron boron permanent magnet is embedded into the rotor magnetic yoke; the bearing unit of the generator body adopts a single cantilever structure and adopts a double-bearing structure design of a ball and a column, wherein the ball bearing mainly bears the axial force generated by the rotor, and the column bearing mainly bears the load of the whole rotor; the cooling system of generator body designs have two sets, is stator cooling system and rotor cooling system respectively, stator cooling system adopts the mode of water jacket cooling, rotor cooling system adopts the mode of air-water cooling, carries out circulative cooling to the rotor through the cooler, makes the rotor magnetic pole be less than a certain temperature definite value all the time to ensure that the temperature of rotor can not influence the permanent magnet performance.
Furthermore, the housing of the generator body is designed by large-scale integrated casting, and the housing is used as an important structural member for supporting the gear box and the impeller while protecting the generator.
Further, the output power of each set of winding in the two sets of windings of the stator is designed to be 5.5 MW.
Further, the lubrication system of the bearing unit is designed for oil-jet lubrication.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
firstly, the unit capacity is designed as a semi-direct-drive type, and a 10MW semi-direct-drive generator has 2MW power more than a current 8MW direct-drive generator with the maximum power, which is equivalent to a 2MW double-fed wind driven generator.
Secondly is the weight and the volume of generator, 8MW directly drives generator maximum diameter 7.5m, and weight is nearly 160t, and the utility model discloses a 10MW half directly drives the generator, and maximum diameter is only 4.2m, and weight is less than 75t, is far less than 8MW and directly drives the generator.
And in the aspects of transportation and hoisting, the unit has small volume and light weight, and the infrastructure cost, the transportation cost and the hoisting cost of the unit are far lower than those of an 8MW direct drive type.
Finally, in the aspect of generating capacity, because the capacity of a single unit is far larger than that of other units, by taking the comparison with an 8MW direct-drive generating set as an example, the generating capacity of a 10MW half direct-drive generating set is improved by about 20%, and the annual benefit rate of the single unit is directly improved by more than 15% through conservative calculation.
Drawings
FIG. 1 is a cross-sectional view of a 10MW half-direct-drive permanent magnet synchronous wind turbine.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Referring to fig. 1, the 10MW half-direct-drive permanent magnet synchronous wind turbine provided in this embodiment is specifically modified as follows:
the stator 1 of the generator adopts a special double-winding design, namely, the stator winding comprises two sets of mutually independent three-phase windings, the problem of mutual interference of the two sets of three-phase windings is solved by using the design scheme, the two sets of three-phase windings can stably operate, the output power of each set of winding design in the two sets of three-phase windings is 5.5MW, and the design has a particularly remarkable advantage that the current in the windings of the generator is greatly reduced under the condition that the power and the voltage of the generator are not changed, so that the copper consumption of the stator is reduced.
The rotor 2 of the generator adopts an embedded rotor magnetic yoke design, a high-strength neodymium iron boron permanent magnet is embedded into the rotor magnetic yoke, and a special packaging process is adopted, so that the heat dissipation of the permanent magnet is not influenced while the permanent magnet is reliably fixed. The overall structure design of rotor 2 is single cantilever support, still guarantees its installation simple process and convenient operation when guaranteeing that the rotor is reliable fixed.
The bearing unit 3 of the generator adopts a single cantilever structure, the influence of shaft current on the bearing is reduced to the greatest extent by the mode, in the selection of the bearing, a ball-column double-bearing structural design is used, the ball bearing 31 mainly bears the axial force generated by the rotor, the column bearing 32 mainly bears the load of the whole rotor 2, in addition, in order to ensure the good lubricating effect of the bearing, the lubricating system of the bearing is designed to be oil-spraying lubrication, and the bearing unit 3 is ensured to obtain longer reliable operation life.
As an ultra-large wind driven generator, in order to properly solve the heat dissipation problem of the generator, when designing a technical scheme, the heat dissipation requirements of windings and magnetic poles are fully considered, and two sets of cooling systems are specially designed, namely a stator cooling system 41 and a rotor cooling system 42; the stator cooling system 41 adopts a water jacket cooling mode, which is the first application of the cooling mode in a 10 MW-level wind driven generator, and compared with the conventional water pipe cooling, the water jacket cooling technology greatly improves the manufacturing manufacturability of the stator core and reduces the manufacturing difficulty of the stator core of the generator. The rotor cooling system 42 adopts an air-water cooling mode, and circularly cools the rotor 2 through a cooler, so that the magnetic pole of the rotor is always lower than a certain temperature fixed value, and the temperature of the rotor 2 is ensured not to influence the performance of the permanent magnet.
The housing 5 of the generator adopts a large-scale integrated casting design, and the housing 5 can protect the generator and also be used as an important structural member for supporting parts such as a gear box, an impeller and the like.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a synchronous aerogenerator of half direct drive permanent magnetism of 10MW, includes the generator body, its characterized in that: the stator of the generator body adopts a double-winding design, namely, the stator winding comprises two sets of three-phase windings which are independent from each other and do not interfere with each other; the rotor overall structure of the generator body is designed to be a single cantilever support, an embedded rotor magnetic yoke is adopted, and a high-strength neodymium iron boron permanent magnet is embedded into the rotor magnetic yoke; the bearing unit of the generator body adopts a single cantilever structure and adopts a double-bearing structure design of a ball and a column, wherein the ball bearing mainly bears the axial force generated by the rotor, and the column bearing mainly bears the load of the whole rotor; the cooling system of generator body designs have two sets, is stator cooling system and rotor cooling system respectively, stator cooling system adopts the mode of water jacket cooling, rotor cooling system adopts the mode of air-water cooling, carries out circulative cooling to the rotor through the cooler, makes the rotor magnetic pole be less than a certain temperature definite value all the time to ensure that the temperature of rotor can not influence the permanent magnet performance.
2. The 10MW half-direct-drive permanent magnet synchronous wind power generator according to claim 1, characterized in that: the shell of the generator body is designed by large-scale integrated casting, and the shell is used as an important structural member for supporting the gear box and the impeller while protecting the generator.
3. The 10MW half-direct-drive permanent magnet synchronous wind power generator according to claim 1, characterized in that: the output power of each set of winding design in the two sets of windings of the stator is 5.5 MW.
4. The 10MW half-direct-drive permanent magnet synchronous wind power generator according to claim 1, characterized in that: the lubrication system of the bearing unit is designed for oil-jet lubrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020250887.0U CN211629952U (en) | 2020-03-04 | 2020-03-04 | 10MW half-direct-drive permanent magnet synchronous wind driven generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020250887.0U CN211629952U (en) | 2020-03-04 | 2020-03-04 | 10MW half-direct-drive permanent magnet synchronous wind driven generator |
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| CN211629952U true CN211629952U (en) | 2020-10-02 |
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| CN202020250887.0U Active CN211629952U (en) | 2020-03-04 | 2020-03-04 | 10MW half-direct-drive permanent magnet synchronous wind driven generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498993A (en) * | 2021-12-30 | 2022-05-13 | 西安中车永电捷力风能有限公司 | Compact semi-direct-drive permanent magnet synchronous wind driven generator |
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2020
- 2020-03-04 CN CN202020250887.0U patent/CN211629952U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498993A (en) * | 2021-12-30 | 2022-05-13 | 西安中车永电捷力风能有限公司 | Compact semi-direct-drive permanent magnet synchronous wind driven generator |
| WO2023124632A1 (en) * | 2021-12-30 | 2023-07-06 | 西安中车永电捷力风能有限公司 | Compact semi-direct drive permanent magnet synchronous wind turbine generator |
| CN114498993B (en) * | 2021-12-30 | 2024-03-26 | 西安中车永电捷力风能有限公司 | Compact semi-direct-drive permanent magnet synchronous wind driven generator |
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