CN2646942Y - A double three-phase AC electric motor - Google Patents
A double three-phase AC electric motor Download PDFInfo
- Publication number
- CN2646942Y CN2646942Y CNU032106297U CN03210629U CN2646942Y CN 2646942 Y CN2646942 Y CN 2646942Y CN U032106297 U CNU032106297 U CN U032106297U CN 03210629 U CN03210629 U CN 03210629U CN 2646942 Y CN2646942 Y CN 2646942Y
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- China
- Prior art keywords
- phase
- winding
- alternating current
- phase alternating
- pair
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a three-phase AC electric motor, in particular to a double three-phase AC electric motor, which comprises a rotor, a stator and an enclosure, wherein, two windings of intersected electric angle are arranged on the stator. The utility model can eliminate action of 5 times harmonic and 7 times harmonic, thereby effectively reducing temperature raise and noise of the electric motor, additional wear and tear and improving efficiency of the electric motor.
Description
Invention field
The utility model relates to three phase alternating current motor, especially a kind of pair of three phase alternating current motor.
Background technology
During the work of public alternating current machine, there is the 6K+1 subharmonic in magnetic potential of air gap, and especially 5 times, 7 subharmonic are comparatively serious, and the harmonic wave that magnetic potential of air gap exists has had a strong impact on the raising of motor performance.In order to reduce or the harmonic wave of the motor performance of eliminating the effects of the act, existing technical scheme is to take some measures on motor material and manufacturing process, but DeGrain.
Summary of the invention
The purpose of this utility model provides a kind of pair of three phase alternating current motor, and it can eliminate the harmonic wave of some effects motor performance.
The purpose of this utility model is achieved in that a kind of pair of three phase alternating current motor is made of rotor, stator and annex, and stator is provided with the winding of the electrical degree that staggers on the 2 cover spaces.
Stagger on the spaces windings of electrical degree of 2 covers constitute the phase difference winding, 2 cover windings connect respectively 2 groups time phase different three-phase alternating-current supplies.The rotating magnetic field direction that is produced during 2 cover winding work is identical; 5 times of the time being produced of two cover windings work, 7 subharmonic directions are opposite.
On the basis of technique scheme, the utility model also has following further scheme:
Variable-frequency governor is set on motor.
Advantage of the present utility model is as follows:
Because the utility model uses the phase difference winding, and the cover of 2 in phase difference winding winding connect respectively 2 time phase different power supplys.So the fractional harmonic that is produced during the work of phase difference winding can be cancelled out each other.The utility model has tangible elimination effect to 5 subharmonic, 7 subharmonic, effectively reduces electric machine temperature rise and noise of motor, has reduced supplementary load loss, has improved electric efficiency.
After being provided with variable-frequency governor on the motor, not only increased the function of motor, and also relative compact of the structure of motor.
Description of drawings
Fig. 1 is a structural representation of the present utility model.Among the figure: the 1-A winding; The 2-B winding; 3-space electrical degree.
Embodiment
The rotor of a kind of pair of three phase alternating current motor, stator, annex are identical with common alternating current machine, be a cover winding on the stator of common three phase alternating current motor, and winding are connected with one group of three phase mains.The notion of " two three-phase " is 2 cover windings, and 2 cover windings connect corresponding three-phase alternating-current supply respectively.2 cover windings of present embodiment are A winding (1) and B winding (2).A winding (1) is identical with B winding (2) structure, and 30 degree space electrical degrees (3) just stagger.Be noted that A winding (1) and B winding (2) the just embodiment of 30 degree space electrical degrees (3) that staggers, in case of necessity other angle can also be arranged.A winding (1) is connected the three-phase alternating-current supply that two groups of time phase differences 30 are spent (the space electrical degree of corresponding winding) respectively with B winding (2).
The three-phase alternating-current supply of two groups of time phase difference 30 degree can produce by frequency converter, also can produce by transformer, is perhaps directly powered by two threephase alternator groups.
Stagger one of ways of 30 degree space electrical degrees (3) of A winding (1) and B winding (2) are to split winding.Such as, stator (4 utmost points, 48 grooves) is gone up every utmost point phase winding be split as A winding (1) and B winding (2), arranging is A winding (1) the preceding, after being arranged in is B winding (2).
A kind of pair of three phase alternating current motor that the utility model proposes is not limited to " two three-phase ", can also be many three-phases in order to eliminate more harmful harmonic wave.Such as, also every phase winding (phase winding of common three phase electric machine) can be split as A, B, C...... winding.Realize many used power supplys of three phase times, the space electrical degree that the time phase difference angle equals to stagger between winding.
In sum, " two three-phase " notion that the utility model proposes comprises many three-phase structures.
In order to strengthen function of the present utility model, the terminal box of motor is amplified, and variable-frequency governor is installed in terminal box.Frequency conversion transfers device also can be installed in other position of motor.Such as, at the blower fan case of motor afterbody the radiator mount pad being set, frequency conversion transfers the heating part in the device to be installed on the mount pad of blower fan case.For better radiating effect is arranged, radiator mount pad and blower fan case should be used aluminum alloy materials.
In order to simplify the supply power mode of motor, be provided with phase shifter between A winding (1) and the B winding (2).Execution mode is that the input of three terminals of A winding (1) as three phase mains, three terminals that B winding (2) connects power supply are attempted by on three terminals of A winding (1) by phase shifter.After the utility model is installed phase shifter, only need one group of three-phase alternating-current supply power supply to get final product.
The utility model not only is applicable to threephase asynchronous machine, and is applicable to motors such as permanent-magnet synchronous.
Claims (6)
1. two three phase alternating current motors are made of rotor, stator and annex, it is characterized in that, stator is provided with the winding of the electrical degree that staggers on the 2 cover spaces.
2. a kind of pair of three phase alternating current motor according to claim 1 is characterized in that, 2 the cover windings spatially stagger 30 the degree electrical degrees.
3. a kind of pair of three phase alternating current motor according to claim 1 is characterized in that, 2 cover windings connect the three phase mains of two groups of time phase differences, 30 degree respectively.
4. a kind of pair of three phase alternating current motor according to claim 1 is characterized in that motor is provided with variable-frequency governor.
5. a kind of pair of three phase alternating current motor according to claim 1 is characterized in that, is provided with phase shifter between A winding (1) and the B winding (2).
6. a kind of pair of three phase alternating current motor according to claim 1 is characterized in that motor fan housing is provided with the radiator mount pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032106297U CN2646942Y (en) | 2003-09-15 | 2003-09-15 | A double three-phase AC electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032106297U CN2646942Y (en) | 2003-09-15 | 2003-09-15 | A double three-phase AC electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2646942Y true CN2646942Y (en) | 2004-10-06 |
Family
ID=34289442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032106297U Expired - Fee Related CN2646942Y (en) | 2003-09-15 | 2003-09-15 | A double three-phase AC electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2646942Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158035A (en) * | 2010-02-11 | 2011-08-17 | 唐山普林亿威科技有限公司 | Dual-three-phase bisymmetric winding permanent-magnet brushless direct-current motor |
| WO2016119512A1 (en) * | 2015-01-30 | 2016-08-04 | 新疆金风科技股份有限公司 | Wind power generator and stator iron core thereof, and stator iron core module |
-
2003
- 2003-09-15 CN CNU032106297U patent/CN2646942Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158035A (en) * | 2010-02-11 | 2011-08-17 | 唐山普林亿威科技有限公司 | Dual-three-phase bisymmetric winding permanent-magnet brushless direct-current motor |
| WO2016119512A1 (en) * | 2015-01-30 | 2016-08-04 | 新疆金风科技股份有限公司 | Wind power generator and stator iron core thereof, and stator iron core module |
| US10541579B2 (en) | 2015-01-30 | 2020-01-21 | Xinjiang Goldwind Science & Technology Co., Ltd. | Wind power generator and stator iron core therof, and stator iron core module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |