CN2689579Y - High-efficient AC torque asynchronous motors - Google Patents
High-efficient AC torque asynchronous motors Download PDFInfo
- Publication number
- CN2689579Y CN2689579Y CN 200420007993 CN200420007993U CN2689579Y CN 2689579 Y CN2689579 Y CN 2689579Y CN 200420007993 CN200420007993 CN 200420007993 CN 200420007993 U CN200420007993 U CN 200420007993U CN 2689579 Y CN2689579 Y CN 2689579Y
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- Prior art keywords
- rotor
- torque
- winding
- teeth
- asynchronous motor
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- Expired - Lifetime
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- 238000004804 winding Methods 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 210000000515 tooth Anatomy 0.000 description 22
- 239000003921 oil Substances 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009422 external insulation Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Induction Machinery (AREA)
Abstract
The utility model relates to high-efficient AC torque asynchronous motors. In a machine base of an AC motor, a three-phase AC stator, an induced rotor, a front end cover and a rear end cover are assembled in sequence, a rotor winding with low induced potential and special structure is arranged in the rotor iron core, the winding makes that the running efficiency of the AC torque asynchronous motor is greatly improved, and simultaneously the torque output characteristic is suitable for the equipment with constant tension and constant linear speed such as coiling machines etc. Besides the AC torque asynchronous motor whose parameters are changed can be used for the heavy-load starting and the stepless self-speed-changing running of oil pumping units in the oil field, and the dual purposes that the oil pumping units are in the greatly energy-saving running and the running efficiency of the oil pumping units is improved are reached.
Description
Affiliated technical field
The utility model relates to a kind of big torque ac torque asynchronous motor, especially can reach the high efficiency ac torque asynchronous motor that big starting torque and running speed and load are inversely proportional to and change with little starting current.
Background technology
Present known ac torque asynchronous motor, be on the basis of general induction alternating current (AC) motor, with the power consumption method that slip power consumes, exchange for and be applicable to permanent tension force with the resistance value that increases rotor loop, the equipment of constant linear velocity is as required permanent power torque characteristics such as coiling machines.Not only waste a large amount of electric energy with the method that increases the rotor loop resistance value, also to make motor rotor produce a large amount of heat energy, force all necessary a large amount of heatings that adapt to rotor such as project organization of alternating current torque motor, therefore, need to adopt special cooling system, caused the volume and weight of alternating current torque motor all very big, its cost also rises at double.
Summary of the invention
In order to overcome the complicated in mechanical structure of existing ac torque asynchronous motor, volume and weight is big, problems such as the low and manufacturing cost height of operational efficiency, and the purpose of this utility model is: provide a kind of volume little, the high efficiency ac torque asynchronous motor that cost is low.
Another purpose of the present utility model is: a kind of heavy-load start of oil-field oil pumper and ac torque asynchronous motor of stepless automatic speed-changing operation of being used for is provided.
The technical scheme that its technical problem that solves the utility model adopts is: in the support of alternating current motor, three-phase alternating current stator, inductiopn rotor, front and rear cover are assembled in proper order, it is characterized in that winding on the inductiopn rotor is according to the many of the shared number of teeth of each pole span of rotor core or few, respectively forming by a plurality of mutually insulateds on three teeth, on two teeth, on tooth from short-circuited coil.
Because all include a plurality of rotor tooths in each pole span of induction alternating current (AC) motor rotor core, every utmost point magnetic flux Φ m is divided into the tooth magnetic flux Φ m/Z (Z is every extremely shared number of teeth) on a plurality of teeth, each tooth magnetic flux is the part of Φ m, the coil that has the loop of one's own is only on two teeth, electromotive force and current strength that it is produced in the time of can only generating two magnetic flux change on the tooth, its electromotive force and magnetic flux meet relational expression E
2 f
2W
2) m/Z.This has just constituted a little magnetic pole by a plurality of same polarity parallel connections and has formed a rotor magnetic pole that magnetic potential is very weak, because this special low induced potential rotor winding can form the identical outer output characteristic of cage rotor of also using high resistance with high induced potential winding, but this low induced potential rotor is not to convert electric energy to the method that thermal energy consumption falls with high resistance to obtain required output characteristic, make the volume of ac torque asynchronous motor little so can reach, the low and high purpose of operational efficiency of cost.
Its subordinate feature is:
The rotor winding by on three teeth and form on four teeth inside and outside two-layer, the adjustable composite construction of its turn ratio hangs down the induced potential winding.
Stator winding by one independently connection delta wire-wound group and one independently the star-star connection winding constitute.
The beneficial effects of the utility model are:
1. high efficiency ac torque asynchronous motor has replaced with increasing the method that the cage rotor resistance value suppresses rotor current with the special low induced potential winding of structure, and the loss of rotor its caloric value that descends is also reduced.
2. when being used as the stepless automatic speed-changing motor use of oil pumper, the starting torque of this moment asynchronous motor is big especially, detect by relevant department, the starting torque of two 18.5kW6 utmost point ac torque asynchronous motor model machines is respectively 1016Nm and 1064Nm, the starting torque (about 1018Nm) of Y280-55kW 6 pole motors that are equivalent to use on the oil pumper, but starting current only is 1/3rd of a 55kW common motor.Load factor during again owing to its operation of oil pumper of the prior art is very little, has only 30% of adapted motor nominal load, and the power factor when making its operation drops to 0.4, and operational efficiency drops to about 65%.Therefore oil pumper is used this high efficiency ac torque asynchronous motor instead, can a large amount of saves energy and raising oil pumper operating efficiency.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is of the present utility model a kind of in the low induced potential developed winding diagrams of composite construction on two teeth and on three teeth on the 54 groove rotors, 1～54th, the sequence number of 54 teeth on the rotor.
Tooth among the figure in 1. rotor cores, 2. the insulation on three rotor tooths is from short-circuited coil, and 3. the insulation on two rotor tooths is from short-circuited coil.
Embodiment
In Fig. 1, with 54 with external insulation be embedded in the rotor bottom of slot liner by the sequence number of rotor tooth from an effective edge of short-circuited coil (2), all embed another three rotor tooths in effective edge interval in the rotor then, through to the shaping of winding overhang with after twining no latitude band on the cylindrical of end, again with 54 with external insulation be embedded in middle part in the rotor from an effective edge of short-circuited coil (3) by the sequence number of rotor tooth, and all embed next but two rotor tooth between another effective edge in the rotor, after installing slot wedge to the rotor tip shaping, and last, carrying out dipping lacquer after the following double-deck insulated coil colligation together handles.Low induced potential AC rotor with this special winding construction realization, be assemblied in the middle of the shell and threephase stator of YLJ series AC torque motor, be used for replacing inductiopn rotor of making by solid core or the inductiopn rotor of making by the brass sliver that in the groove of silicon steel plate core, embeds big resistance value.
Proof by experiment: come the electric current of limiting AC inductiopn rotor under big revolutional slip with reducing rotor induced potential amplitude, improving resistance value in the inductiopn rotor winding loop that coexists, to come the effect of the electric current of restrict rotor under slip greatly be identical.
Claims (3)
1. high efficiency ac torque asynchronous motor, it is in the support of alternating current motor, three-phase alternating current stator, inductiopn rotor, front and rear cover are assembled in proper order, it is characterized in that: what of the shared number of teeth of each pole span of rotor core the winding on the inductiopn rotor be according to, respectively being made up of from short-circuited coil a plurality of mutually insulateds on three teeth, on two teeth, on tooth.
2. high efficiency ac torque asynchronous motor according to claim 1 is characterized in that: the rotor winding by on three teeth and form on four teeth inside and outside two-layer, the adjustable composite construction of its turn ratio hangs down the induced potential winding.
3. high efficiency ac torque asynchronous motor according to claim 1 and 2 is characterized in that: stator winding by one independently connection delta wire-wound group and one independently the star-star connection winding constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420007993 CN2689579Y (en) | 2004-03-28 | 2004-03-28 | High-efficient AC torque asynchronous motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420007993 CN2689579Y (en) | 2004-03-28 | 2004-03-28 | High-efficient AC torque asynchronous motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689579Y true CN2689579Y (en) | 2005-03-30 |
Family
ID=34668304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420007993 Expired - Lifetime CN2689579Y (en) | 2004-03-28 | 2004-03-28 | High-efficient AC torque asynchronous motors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689579Y (en) |
-
2004
- 2004-03-28 CN CN 200420007993 patent/CN2689579Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HARBIN CITY WUHUAN ELECTRICAL APPARATUS EQUIPMENT Free format text: FORMER OWNER: JIANG YUNLIANG Effective date: 20060317 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060317 Address after: 150086, No. 191, Xuefu Road, Nangang District, Heilongjiang, Harbin Patentee after: Harbin Five-ring electric appliance manufacturing Corporation Address before: 721006, No. 1, unit 82, 5, three Lu Jie, Lu Jiang, Baoji, Shaanxi Patentee before: Jiang Yunliang |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140328 Granted publication date: 20050330 |
|
| DD01 | Delivery of document by public notice |
Addressee: Liu Guimin Document name: Notification of Expiration of Patent Right Duration |