CN104539126A - 75-kW electricity generator - Google Patents
75-kW electricity generator Download PDFInfo
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- CN104539126A CN104539126A CN201410756686.7A CN201410756686A CN104539126A CN 104539126 A CN104539126 A CN 104539126A CN 201410756686 A CN201410756686 A CN 201410756686A CN 104539126 A CN104539126 A CN 104539126A
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Abstract
The invention discloses a 75-kW electricity generator. The 75-kW electricity generator comprises a stator and a rotor; the rotor comprises a rotor shaft, a rotor core and a magnetic shoe fixed to the rotor core; the stator comprises a stator core composed of a plurality of stamping sheets, each stamping sheet is provided with a coil groove and a coil tooth, the coil teeth are rectangular teeth, and the ratio of the width of the coil teeth to the width of the coil grooves ranges from 0.5 to 0.7. According to the 75-kW electricity generator, the magnetic shoe is adopted in the rotor to form a rotating magnetic field, so that the occupation space is smaller; as the magnetic flux density of the stator coil is larger, the size of the electricity generator is smaller, and the electricity generation efficiency is higher; meanwhile, the ratio of the width of the coil teeth to the width of the coil grooves is controlled to range from 0.5 to 0.7, so that the number of turns of coils in the coil grooves and the magnetic flux across the coil teeth reach the best combination state, the problem of magnetic saturation of the stator core is accordingly eliminated, the electricity generation efficiency of the electricity generator is higher, and the service life is longer.
Description
Technical field
The present invention relates to a kind of generating equipment, particularly a kind of 75kW generator.
Background technology
Generator comprises stators and rotators, generator unit stator by stator core, stator winding and support three part form, rotor is made up of armature spindle, rotor core and permanent magnet.Iron core is formed by high permeability material punching overlapping combinations, and the structure of punching directly affects the assembling production efficiency etc. of the efficiency of generator, life-span, performance and motor.
And existing 75kW generator, the problems such as its permanent magnet is generally all-in-one-piece rectangular strip structure, and permanent magnet is inserted on rotor core, and it is large that generator exists rotor volume, and magnetic flux density is lower, generating efficiency difference.
And stator punching of the prior art in the design process general size, the teeth groove only focusing on teeth groove can penetrate coil turn number, and have ignored the ratio of the facewidth and teeth groove degree, and then stator core is caused easily to occur the problem such as magnetic saturation, poor radiation.
Summary of the invention
In view of this, the object of this invention is to provide a kind of 75kW generator, existing 75kW generator volume be large to solve, low etc. the problem of generating efficiency.
75kW generator of the present invention, comprise stators and rotators, the magnetic shoe that described rotor comprises armature spindle, rotor core and is fixed on rotor core, described magnetic shoe is four groups, often organize magnetic shoe and comprise eight blocks of magnetic shoes, and eight blocks of magnetic shoes arrange layout by two row four is fixed on rotor core.
Further, described stator comprises the stator core be made up of some punchings, described punching is provided with coil groove and coil tooth, and described coil tooth is rectangular teeth, and the ratio of the width of coil tooth and the width of coil groove is 0.5 ~ 0.7.
Further, the bottom radius of described coil groove and the ratio of notch radius are 1.25, and the ratio of punching exradius and inner circle radius is 1.6.
Further, the cylindrical edge of described punching is provided with radiating groove.
Beneficial effect of the present invention:
1,75kW generator of the present invention, its rotor adopts magnetic shoe to form rotating magnetic field, and relatively with existing rectangular permanent magnet, shared by it, space is less, and larger by the magnetic flux density of stator coil, make generator volume less, generating efficiency is higher, and manufacturing cost is lower.
2,75kW generator of the present invention, the ratio of the width of coil tooth on stator punching and the width of coil groove controls 0.5 ~ 0.7 by it, make the coil turn in coil groove and reach best of breed state by the magnetic flux of coil tooth, thus eliminate stator core magnetic saturation problem, the width of coil tooth also ensure that it has enough area of dissipations simultaneously, make electrical power generators efficiency higher, longer service life.
3,75kW generator of the present invention, the radiating groove that it is arranged can further improve the heat-sinking capability of stator, extends stator useful life, also can reduce the manufacturing cost of stator simultaneously.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of 75kW generator of the present invention;
Fig. 2 is the perspective view of rotor;
Fig. 3 is the structural representation of stator punching.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in the figure, the present embodiment 75kW generator, comprise stators and rotators, the magnetic shoe 3 that described rotor comprises armature spindle 1, rotor core 2 and is fixed on rotor core, described magnetic shoe 3 is four groups, often organize magnetic shoe and comprise eight blocks of magnetic shoes, and eight blocks of magnetic shoes arrange layout by two row four is fixed on rotor core.
75kW generator of the present invention, its rotor adopts magnetic shoe to form rotating magnetic field, and relatively with existing rectangular permanent magnet, shared by it, space is less, and larger by the magnetic flux density of stator coil, make generator volume less, generating efficiency is higher, and manufacturing cost is lower.
As the improvement to the present embodiment, described stator comprises the stator core be made up of some punchings 4, described punching is provided with coil groove 5 and coil tooth 6, described coil tooth is rectangular teeth, the ratio of the width of coil tooth and the width of coil groove is 0.5, certainly in different embodiments, the ratio of the width of coil tooth and the width of coil groove also can be other value in 0.5 ~ 0.7 scope, and the quantity of coil groove 5 is 36.The present embodiment 75kW generator, the ratio of the width of the width of coil tooth and coil groove controls 0.5 ~ 0.7 by it, make the coil turn in coil groove and reach best of breed state by the magnetic flux of coil tooth, thus eliminate stator core magnetic saturation problem, the width of coil tooth also ensure that it has enough area of dissipations simultaneously, make electrical power generators efficiency higher, longer service life.
As the improvement to the present embodiment, the bottom radius of described coil groove and the ratio of notch radius are 1.25, and the ratio of punching exradius and inner circle radius is 1.6; Its dimensional structure can ensure that magnetic saturation problem does not appear in stator core, and controls air gap at zone of reasonableness, reduces magnetic resistance, and makes stator volume enough little, makes cost lower.
As the improvement to the present embodiment, the cylindrical edge of described punching is provided with radiating groove 7, and the cooling air that Power generator fan produces cools by radiating groove 7 pairs of stator cores, can improve generator life-span and generating efficiency further.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. a 75kW generator, comprise stators and rotators, it is characterized in that: the magnetic shoe that described rotor comprises armature spindle, rotor core and is fixed on rotor core, described magnetic shoe is four groups, often organize magnetic shoe and comprise eight blocks of magnetic shoes, and eight blocks of magnetic shoes arrange layout by two row four is fixed on rotor core.
2. 75kW generator according to claim 1, it is characterized in that: described stator comprises the stator core be made up of some punchings, described punching is provided with coil groove and coil tooth, described coil tooth is rectangular teeth, and the ratio of the width of coil tooth and the width of coil groove is 0.5 ~ 0.7.
3. 75kW generator according to claim 1, is characterized in that: the bottom radius of described coil groove and the ratio of notch radius are 1.25, and the ratio of punching exradius and inner circle radius is 1.6.
4. 75kW generator according to claim 1, is characterized in that: the cylindrical edge of described punching is provided with radiating groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756686.7A CN104539126A (en) | 2014-12-10 | 2014-12-10 | 75-kW electricity generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410756686.7A CN104539126A (en) | 2014-12-10 | 2014-12-10 | 75-kW electricity generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104539126A true CN104539126A (en) | 2015-04-22 |
Family
ID=52854614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410756686.7A Pending CN104539126A (en) | 2014-12-10 | 2014-12-10 | 75-kW electricity generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104539126A (en) |
-
2014
- 2014-12-10 CN CN201410756686.7A patent/CN104539126A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |
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| RJ01 | Rejection of invention patent application after publication |