CN2158593Y - Three-phase asynchronous motor - Google Patents
Three-phase asynchronous motor Download PDFInfo
- Publication number
- CN2158593Y CN2158593Y CN 93218463 CN93218463U CN2158593Y CN 2158593 Y CN2158593 Y CN 2158593Y CN 93218463 CN93218463 CN 93218463 CN 93218463 U CN93218463 U CN 93218463U CN 2158593 Y CN2158593 Y CN 2158593Y
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- stator
- winding
- asynchronous motor
- motor
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a low-speed torque type three-phase asynchronous motor. The stator winding of the low-speed torque type three-phase asynchronous motor is made of windings; the average number of slots of each pole and each phase of each winding is smaller than 1; the stator winding is made of single layer chain type windings. When the condition that the dimension of the exterior and the number of stator slots of the low-speed torque type three-phase asynchronous motor is identical with the dimension of the exterior and the number of stator slots of a common asynchronous motor is formed by the winding of the utility model, number of poles can be enlarged to reduce rotary speed. Due to the fact that electromagnetic deceleration is achieved, the retarding mechanisms of external machines and frequency conversion equipment which is used when frequency conversion deceleration is used can be omitted. The rotary speed of the motor of the utility model is smaller than 250 circles / minute, and the technical index of durability is not lower than the prescribed limit of an asynchronous motor of Y series.
Description
The utility model relates to a kind of motor, is specially low speed torque type threephase asynchronous.
The Y series threephase asynchronous of widely using at present can not directly drive the load that requires the big torque of the slow-speed of revolution (being lower than 250 rev/mins) when 50 all frequency power supplys are powered, the general mechanical reducer that adopts slows down, like this transmission structures complexity, increased weight and volume and poor reliability, the life-span is low, noise is big.In the slow-speed motor, mainly contain synchronous reaction formula motor, its making capacity is little, be mainly used in automatic control system and require slow-revving occasion, as being widely used, the asynchronous motor that make easily, cost is low is when carrying out electromagnetic deceleration, necessary frequency conversion, need the frequency conversion equipment of cost costliness, otherwise must adopt multipole number, and multipole when several the stator number of teeth must increase, this brings difficulty to making in certain diameter of stator bore scope.Therefore, development is a kind ofly manufactured easily, the threephase asynchronous of the slow-speed of revolution, big torque necessitates.
The purpose of this utility model can directly drive the low speed torque type threephase asynchronous that low speed, big torque load(ing) and technical indicator are not less than Y series asynchronous motor prescribed limit for provide a kind of under the preceding topic of the internal diameter number of teeth that does not increase motor stator.
The utility model is to adopt following measure to realize.This low speed torque type threephase asynchronous comprises stator and rotor, and the average groove number that its stator winding adopts every extremely every phase is less than 1 winding, and this winding adopts individual layer chain type winding, stator is divided into K1 every extremely every phase groove counts q
1=1 counts q with K2 every extremely every groove mutually
2=2/3 district, every district adopts the winding coil of different coil spanes, two kinds of intervals are every being evenly distributed in stator circumference, the total groove number of stator calculates by following formula: Z=3K1P1+2K2P2 K1, K2 are any positive integer, P1, P2 are every district number of poles, P1 is any even number, and P2 is 6 and 6 multiple.Rotor of the present utility model removes and adopts common cage rotor, can adopt real core cast aluminium formula rotor.
The utility model adopts the method that increases number of poles to reduce rotating speed, increase number of poles according to commonsense method, number of stator slots is inevitable to be increased thereupon, under the certain situation of motor overall dimensions, the increase of number of stator slots is given to manufacture and is brought difficulty, and adopts winding configuration of the present utility model, under motor overall dimensions and number of stator slots and situation that generally asynchronous motor is identical, can increase number of poles, thereby reduce rotating speed; Because asynchronous motor described in the utility model, adopted the internal electromagnetic deceleration, therefore, frequency conversion equipment when having saved outside mechanical reduction gear and having adopted frequency conversion to slow down, reduced equipment cost, the rotating speed of this low speed torque type threephase asynchronous is lower than 250 rev/mins, and technical indicator is not less than Y series asynchronous motor prescribed limit.
Accompanying drawing has provided the expanded view of the stator winding of motor described in the utility model.
Embodiment 1: present embodiment has provided a kind of instantiation of threephase asynchronous described in the utility model, count K1 among the Z=3K1P1+2K2P2 at total groove, K2 selects 3 for use, 4, P1, P2 selects 2 for use, 6, so total groove is counted Z=60, it is that 6 numbers of poles are 2(q=1 that 60 stator slots are divided into 3 groove numbers) and 4 groove numbers be that 12 numbers of poles are 6(q=2/3) the district, whole motor has 26 utmost points, if and adopt the integer groove winding of general three-phase asynchronous motor, every extremely every phase groove number is 1 o'clock, 60 grooves can only form 20 utmost points, by contrast under the certain situation of groove number, every extremely every phase average groove number described in the utility model has increased number of poles less than 1 winding, thereby realized electromagnetic deceleration relatively, at q
1=1 district interior loop pitch 1-4 is at q
2District's coil span of=2/3 is 1-3, and two kinds interregional every being evenly distributed in stator circumference, and the present embodiment rotor is real core cast-aluminum rotor.300 watts of the described threephase asynchronous power outputs of present embodiment, output torque 13 Newton meters, 250 rev/mins of synchronous speeds, its concrete overall dimensions are that stator is outer through φ 167, stator is interior through φ 110, iron core long 50.50 grooves of real core cast-aluminum rotor.
Embodiment 2: present embodiment is that low speed torque type threephase asynchronous described in the utility model is applied on the gearless motorized pulleys, and cylinder is as the motor external rotor, and internal stator is loaded on the drum shaft.Count at total groove and to select K1=6 among the Z=3K1P1+2K2P2, K2=4, P1=6, P2=6, so total groove is counted Z=156, and it is that 18 numbers of poles are 6(q that 156 stator slots are divided into 6 groove numbers
1=1) and 4 groove numbers be that 12 numbers of poles are 6(q
2=2/3) district, whole motor has 60 utmost points, at q
1=1 district interior loop pitch 1-4 is at q
2District's interior loop pitch of=2/3 is 1-3, and two kinds interregional every being evenly distributed in stator circumference.And if adopt the integer groove winding of general three-phase asynchronous motor, every extremely every phase groove number is 1 o'clock, and 60 utmost points need 180 stator slots, 30 kilowatts of present embodiment power outputs, 90 rev/mins of drum rotation speeds, the output torque is 3184.7 Ns of rice, cylinder external diameter φ 630, internal stator external diameter φ 562, external rotor internal diameter 564, external rotor is real core cast-aluminum rotor, and 140 grooves are uniform, unshakable in one's determination long 750.
Claims (4)
1, a kind of low speed torque type threephase asynchronous comprises stator and rotor, it is characterized by: the average groove number that stator winding adopts every extremely every phase is less than 1 winding, and this winding adopts individual layer chain type winding, stator is divided into K1 every extremely every phase groove counts q
1=1 counts q with K2 every extremely every groove mutually
2=2/3 district, every district adopts the winding coil of different coil spanes, and two kinds of intervals are every being evenly distributed in stator circumference, and the total groove number of stator is pressed column count: Z=3K1P1+2K2P2K1, K2 are any positive integer; P1, P2 are every district number of poles, and P1 is any even number, and P2 is 6 and 6 multiple.
2, motor as claimed in claim 1 is characterized by: K1, K2 select for use 3,4 P1, P2 to select 2,6 for use among the Z=3K1P1+2K2P2.
3, motor as claimed in claim 1 is characterized by: K1, K2 select 6,4 for use among the Z=3K1P1+2K2P2, and P1, P2 select 6,6 for use.
4, as claim 1,2,3 described threephase asynchronouses, it is characterized by: rotor is real core cast-aluminum rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93218463 CN2158593Y (en) | 1993-07-10 | 1993-07-10 | Three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93218463 CN2158593Y (en) | 1993-07-10 | 1993-07-10 | Three-phase asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2158593Y true CN2158593Y (en) | 1994-03-09 |
Family
ID=33798120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93218463 Expired - Fee Related CN2158593Y (en) | 1993-07-10 | 1993-07-10 | Three-phase asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2158593Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873028A (en) * | 2010-07-19 | 2010-10-27 | 大连伯顿冠力电机有限公司 | Traction system of variable-frequency direct-drive rare-earth permanent magnet motor of fixing vertical feed stirrer |
| CN101515741B (en) * | 2008-02-21 | 2011-06-29 | 高强 | Method for winding rotor coil of motor |
-
1993
- 1993-07-10 CN CN 93218463 patent/CN2158593Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515741B (en) * | 2008-02-21 | 2011-06-29 | 高强 | Method for winding rotor coil of motor |
| CN101873028A (en) * | 2010-07-19 | 2010-10-27 | 大连伯顿冠力电机有限公司 | Traction system of variable-frequency direct-drive rare-earth permanent magnet motor of fixing vertical feed stirrer |
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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 |