CN201860237U - Alternating-current variable pole three-speed three-phase induction motor - Google Patents
Alternating-current variable pole three-speed three-phase induction motor Download PDFInfo
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- CN201860237U CN201860237U CN2010206041712U CN201020604171U CN201860237U CN 201860237 U CN201860237 U CN 201860237U CN 2010206041712 U CN2010206041712 U CN 2010206041712U CN 201020604171 U CN201020604171 U CN 201020604171U CN 201860237 U CN201860237 U CN 201860237U
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Abstract
The utility model relates to an alternating-current variable pole three-speed three-phase induction motor. Two complete three-phase stator windings are disposed on a stator of the induction motor, one three-phase stator winding is provided with high-speed pole pairs p1 and medium-speed pole pairs p2, a two-path star parallel (2Y) connection method is adopted for the high-speed pole pairs p1, a triangular (delta) connection method is adopted for the medium-speed pole pairs, and the three-phase winding is provided with six outlet wire ends. The other three-phase stator winding is provided with medium-speed pole pairs p2 and low-speed pole pairs p3, the triangular (delta) connection method is adopted for the medium-speed pole pairs p2, the two-path star parallel connection (2Y) method is adopted for the low-speed pole pairs p3, and the other three-phase stator winding is further provided with six outlet wire ends. The triangular (delta) connection method is adopted for the medium-speed pole pairs p2 of the two complete three-phase stator windings, the two complete three-phase stator windings are connected in parallel, and an integral three-phase stator winding is formed finally and provided with totally nine wire outlet wire ends. The induction motor is high in winding conductor utilization rate, low in temperature rise and simple in variable pole control, while loss is reduced.
Description
Technical field
The utility model belongs to technical field of motors, is specifically related to a kind of interchange pole-changing three fast three-phase induction motors.
Background technology
Pole changing is one of alternating current machine speed regulating method commonly used.The order of connection and the mode of connection that this speed regulating method only need change machine winding coil just can change the motor windings number of pole-pairs, thereby make motor have two or more speed, compare with other speed regulating method such as frequency conversion, have the high and simple and reliable outstanding feature of efficient.
Pole changing method commonly used has two kinds of reverse method and commutation methods, and wherein the reverse pole-conversion method is to be divided into two sections after coil with every phase winding reconfigures, and it is simple to have a wiring, terminal is few, changing-over is convenient, and pole-changing turn ratio conversion flexible characteristic is suitable for common multipole proportion variable-pole winding.
Using the reverse pole-conversion method can make a cover three phase windings have two kinds of different numbers of poles that can pass through the switch changing-over.But, if require that three kinds of numbers of poles are arranged, still need two covers, three phase windings usually.This be because, wiring when making the pole-changing changing-over is simple as far as possible, generally require corresponding 3 outlets of a kind of speed of three-phase variable-pole winding, just corresponding 6 outlets of such two kinds of speed, though and simplex winding also can be realized three kinds of numbers of poles, but the terminal of winding will be many, surpasses desirable 9 outlets.For accomplishing that three fast pole-changing motor windings keep 9 terminals, pole-changing changing-over simultaneously is easy, still at present pole-changing schemes that adopt two covers, three phase windings more.
Three fast pole-changing motors are extensive in the hoisting and hanging application in machine equipments, and the ultimate ratio of this three fast pole-changing motors is taken as 4/8/32 usually, and wherein 4 hypervelocities are used for underloading, 8 utmost point middling speed heavy duties, and 32 utmost point low speed then are used for let-down position under the weight.As general pole-changing arrangements, need to adopt independently three phase windings of two covers, 4/8 a cover winding very wherein, 32 utmost points then use a cover winding separately.
Adopt independently three phase windings of two covers, the benefit that also is double winding three fast pole-changing schemes is that terminal is few, and the pole-changing changing-over is easy, but no matter motor at this moment works under any speed, and it is idle wherein always to have a cover winding, causes the overall utilance of motor windings low, temperature rise, inefficiency.
Summary of the invention
The utility model purpose is problem and the defective that exists for the three fast variable-pole winding modes of connection that overcome above-mentioned present three-phase induction motor, and provide a kind of new interchange three fast pole-changing three-phase induction motors, its stator winding adopts two covers to have synthetic use of reverse method variable-pole winding of different pole-changing ratios, the method of the following use in parallel of this a kind of therein number of poles of two cover variable-pole winding just, compare with existing unrelated double winding multispeed electric machine pole-changing scheme and to have better technical performance, winding conductor utilance height, temperature rise is low, loss reduces, the terminal radical then keeps with original identical constant, and pole-changing control is easy.
The technical solution of the utility model is:
Generally speaking, double winding three fast pole-changing schemes require to be permanent torque pole-changing, its high speed number of pole-pairs p usually
1With middling speed number of pole-pairs p
2A shared cover winding adopts the reverse method pole-changing, low speed number of pole-pairs p
3Use an other cover winding separately, and for permanent torque variable-pole winding, the actual effectively copper consumption from design of Windings, in these three kinds of numbers of pole-pairs, low speed number of pole-pairs p
3With middling speed number of pole-pairs p
2Higher, high speed number of pole-pairs p
1Lower, therefore can consider low speed number of pole-pairs p
3Originally use an other cover winding also to become low speed number of pole-pairs p separately by reverse method pole-changing principle design
3With middling speed number of pole-pairs p
2Shared, thus high speed number of pole-pairs and the shared cover winding of middling speed number of pole-pairs, the new double winding three fast pole-changing schemes of the shared other cover winding of low speed number of pole-pairs and middling speed number of pole-pairs formed.Owing to all contain middling speed number of pole-pairs p in new departure two cover windings
2, for reducing the outlet radical as far as possible, this two covers winding is at middling speed number of pole-pairs p
2Under can consider the parallel operation mode, but be noted that and must guarantee that each branch road induced electromotive force phase place in parallel is identical that amplitude equates, to avoid issuable circulation.
The concrete wiring of above-mentioned two cover three phase windings can have multiple mode.For example, adopt reverse method principle pole-changing, a cover three-phase design of Windings is become high speed number of pole-pairs p
1With middling speed number of pole-pairs p
2Shared, connection is the 2Y/ Δ, and another set of three phase windings then are designed to low speed number of pole-pairs p
3With middling speed number of pole-pairs p
2Shared, adopt reverse method principle pole-changing equally, connection also is the 2Y/ Δ, two cover windings all contain middling speed number of pole-pairs p
2, connection is all Δ, therefore can be with it parallel connection, as shown in Figure 1.The mapping mode wiring of its three kinds of numbers of poles as shown in Figure 2, as can be seen, at this moment two the cover windings the end of a thread of drawing be 9, corresponding high speed number of pole-pairs p
1, connection is 2Y; Corresponding middling speed number of pole-pairs p
2, connection is a Δ; Corresponding low speed number of pole-pairs p
3, connection also is 2Y.
Generally speaking, double winding three fast pole-changing schemes require to be permanent torque pole-changing, its high speed number of pole-pairs p usually
1With middling speed number of pole-pairs p
2A shared cover winding adopts the reverse method pole-changing, low speed number of pole-pairs p
3Use an other cover winding separately, and for permanent torque variable-pole winding, the actual effectively copper consumption from design of Windings, in these three kinds of numbers of poles, low speed number of pole-pairs p
3With middling speed number of pole-pairs p
2Higher, high speed number of pole-pairs p
1Lower, therefore can consider low speed number of pole-pairs p
3Originally use an other cover winding also to become low speed number of pole-pairs p separately by reverse method pole-changing principle design
3With middling speed number of pole-pairs p
2Shared, thus the high speed utmost point and the extremely shared cover winding of middling speed, the new double winding three fast pole-changing schemes of the extremely shared other cover winding of the low speed utmost point and middling speed formed.Owing to all contain middling speed number of pole-pairs p in new departure two cover windings
2, for reducing the outlet radical as far as possible, this two covers winding is at middling speed number of pole-pairs p
2Under can consider the parallel operation mode, but be noted that and must guarantee that each branch road induced electromotive force phase place in parallel is identical that amplitude equates, to avoid issuable circulation.
The concrete wiring of new departure two cover three phase windings can have multiple mode.For example, adopt reverse method principle pole-changing, a cover three-phase design of Windings is become high speed number of pole-pairs p
1With middling speed number of pole-pairs p
2Shared, connection is the 2Y/ Δ, and another set of three phase windings then are designed to low speed number of pole-pairs p
3With middling speed number of pole-pairs p
2Shared, adopt reverse method principle pole-changing equally, connection also is the 2Y/ Δ, two cover windings all contain middling speed utmost point p
2, connection is all Δ, therefore can be with it parallel connection, as shown in Figure 1.The mapping mode wiring of its three kinds of numbers of poles is shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, and as can be seen, at this moment the end of a thread of drawing of two cover windings is 9, corresponding high speed number of pole-pairs p
1, connection is 2Y; Corresponding middling speed number of pole-pairs p
2, connection is a Δ; Corresponding low speed number of pole-pairs p
3, connection also is 2Y.
For the three-speed motor in the practice, often require middling speed number of pole-pairs p
2With low speed number of pole-pairs p
3Be designed to the distal pole ratio, for example 8/24 utmost point or 8/32 utmost point etc. in this case, for guaranteeing that suitable air gap flux density ratio is arranged under two kinds of numbers of poles, can be considered at low speed number of pole-pairs p
3On the basis of corresponding 2Y connection, other is the cover low speed number of pole-pairs p that connects
3Three phase windings become the 2Y+Y connection, as shown in Figure 3.
2Y+Y connection shown in Fig. 3 also can be used for the double speed winding separately, to pass through to adjust the number of turn of series connection Y part under the situation of distal pole ratio, makes motor gas-gap that the close ratio of suitable magnetic be arranged, at this moment corresponding high speed number of pole-pairs p
1Be triangle (Δ) connection, corresponding low speed number of pole-pairs p
3For two-way star parallel connection method adds one tunnel star series connection (2Y+Y) connection, drawing line end is 6, shown in Fig. 4 a, Fig. 4 b, Fig. 4 c.
Winding conductor utilance height of the present utility model, temperature rise is low, and loss reduces, and the terminal radical then keeps with original identical constant, and pole-changing control is easy.
Description of drawings
Fig. 1 is that two cover three-phase 2Y/ Δ connection variable-pole winding make up connection schematic diagram in parallel under the Δ connection.
Fig. 2 a, Fig. 2 b, Fig. 2 c are three-phase three fast variable-pole winding leading-out terminal connection method schematic diagrames.
Fig. 3 is two cover three-phase 2Y/ Δ connection variable-pole winding and a cover single speed three phase windings combination connection schematic diagram.
Fig. 4 a, Fig. 4 b, Fig. 4 c are a cover three-phase 2Y/ Δ connection variable-pole winding and a cover single speed three phase windings combination connection schematic diagram.
Fig. 5 is number of stator slots Z=96, and pole-changing is than the three-phase winding connection method schematic diagram that is 4/8/32.
Fig. 6 is number of stator slots Z=36, and pole-changing is than the three-phase winding connection method schematic diagram that is 2/8.
Embodiment
Below in conjunction with accompanying drawing and example the utility model is described in detail:
Shown in Fig. 1-4, the utility model is placed two covers, three phase windings at its stator, and a cover threephase stator winding has high speed number of pole-pairs p
1With middling speed number of pole-pairs p
2, wherein for high speed number of pole-pairs p
1For two-way star parallel connection (2Y) connection, for middling speed number of pole-pairs p
2For triangle (Δ) connection, there are six to draw line end; Another set of threephase stator winding has middling speed number of pole-pairs p
2With low speed number of pole-pairs p
3, wherein for middling speed number of pole-pairs p
2For triangle (Δ) connection, for low speed number of pole-pairs p
3For two-way star parallel connection (2Y) connection, also there are six to draw line end; This two covers threephase stator winding is for middling speed number of pole-pairs p
2Be triangle (Δ) connection, and it is connected in parallel, as shown in Figure 1, the mapping mode wiring of its three kinds of numbers of poles is shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, as can be seen, the line end of drawing of the whole three-phase stator winding of Xing Chenging has 9 at last, wherein for high speed number of pole-pairs p
1For two-way star parallel connection (2Y) connection, for middling speed number of pole-pairs p
2For two-way triangle (2 Δ) parallel connection method, for low speed number of pole-pairs p
3Be two-way star parallel connection (2Y) connection, draw line end and have 9.
For the three-speed motor in the practice, often require middling speed number of pole-pairs p
2With low speed number of pole-pairs p
3Be designed to the distal pole ratio, for example 8/24 utmost point or 8/32 utmost point etc. in this case, for guaranteeing that suitable air gap flux density ratio is arranged under two kinds of numbers of pole-pairs, can be considered at low speed number of pole-pairs p
3On the basis of corresponding 2Y connection, other is the cover low speed number of pole-pairs p that connects
3Three phase windings become the 2Y+Y connection, as shown in Figure 3.2Y+Y connection shown in Fig. 3 also can be used for the double speed winding separately, to pass through to adjust the number of turn of series connection Y part under the situation of distal pole ratio, makes motor gas-gap that the close ratio of suitable magnetic be arranged, at this moment corresponding high speed number of pole-pairs p
1Be the Δ connection, corresponding low speed number of pole-pairs p
3Be the 2Y+Y connection, shown in Fig. 4 a, Fig. 4 b, Fig. 4 c.
Example 1
A pole-changing is arranged than the three-speed motor that is 4/8/32, number of stator slots Z=96 wherein places two covers, three phase windings, one cover is 4/8 utmost point, adopt 2Y/ Δ connection, the reverse method variable-pole winding of 60 °/120 ° of facies tracts, another set of is 8/32 utmost point reverse method variable-pole winding, for making motor gas-gap that the close ratio of suitable magnetic be arranged, adopted Δ/2Y+Y connection, also, be the Δ connection promptly for 8 utmost points, 60 ° of facies tracts then are the 2Y+Y connection to 32 utmost points.
This two covers winding is the Δ connection to 8 utmost points, chooses suitable coil span and coil turn respectively, makes that branch road induced electromotive force phase place and amplitude size are identical, thereby can adopt and be connected in parallel that the concrete mode of connection as shown in Figure 5.
Being the coil of 4/8 utmost point reverse method pole-changing, three phase windings in Fig. 5 dot-dash wire frame, is the coil of 8/32 utmost point reverse method pole-changing, three phase windings in the frame of broken lines, is not difficult to find out, this two covers winding is connected in parallel for the two-way triangle for 8 utmost points, also even with leading-out terminal D
4, D
5, D
6, D
7, D
8, D
9Unsettled, D
1, D
2, D
3Insert three phase mains, winding forms 2 Δ connections, and at this moment electric machine operation state is 8 utmost points; Equally also can find out, if with leading-out terminal D
1, D
2, D
3Short circuit, D
4, D
5, D
6Unsettled, D
7, D
8, D
9Insert three phase mains, form the 2Y connection, electric machine operation state is 4 utmost points; If with leading-out terminal D
1, D
2, D
3Short circuit, D
7, D
8, D
9Unsettled, D
4, D
5, D
6Insert three phase mains, form the 2Y+Y connection, electric machine operation state is 32 utmost points.
Example 2:
A pole-changing is arranged than the double-speed motor that is 2/8, number of stator slots Z=36 wherein places two covers, three phase windings, and a cover is 2/8 utmost point, adopt 2Y/ Δ connection, the reverse method change pole double speed winding of 60 °/120 ° of facies tracts, another set of is 8 extremely regular 60 ° of facies tract single speed windings, two cover windings are chosen suitable coil span and coil turn respectively, make this motors with further pole ratio keep suitable air gap flux density ratio extremely down at 2 utmost points and 8, as shown in Figure 6, at this moment corresponding 2 utmost points are with leading-out terminal D
1, D
2, D
3Insert three phase mains, D
4, D
5, D
6Unsettled, be the Δ connection; Corresponding 8 utmost points are with leading-out terminal D
1, D
2, D
3Short circuit, D
4, D
5, D
6Insert three phase mains, be the 2Y+Y connection.
Claims (3)
1. one kind exchanges pole-changing three fast three-phase induction motors, it is characterized in that: place two covers, three phase windings at its stator, a cover threephase stator winding has high speed number of pole-pairs p
1With middling speed number of pole-pairs p
2, wherein for high speed number of pole-pairs p
1For two-way star parallel connection (2Y) connection, for middling speed number of pole-pairs p
2For triangle (Δ) connection, there are six to draw line end; Another set of threephase stator winding has middling speed number of pole-pairs p
2With low speed number of pole-pairs p
3, wherein for middling speed number of pole-pairs p
2For triangle (Δ) connection, for low speed number of pole-pairs p
3For two-way star parallel connection (2Y) connection, also there are six to draw line end; This two covers threephase stator winding is for middling speed number of pole-pairs p
2Be triangle (Δ) connection, and it is connected in parallel, the line end of drawing of the whole three-phase stator winding of Xing Chenging has 9 at last.
2. interchange pole-changing three fast three-phase induction motors according to claim 1 is characterized in that: arrange a cover low speed number of pole-pairs p in motor stator in addition
3Three phase windings, and with it and above-mentioned number of pole-pairs p
3The three-phase windings in series of two-way star parallel connection method connects, and forms for number of pole-pairs p
3Two-way star parallel connection method add one tunnel star series connection (2Y+Y) connection.
3. interchange pole-changing three fast three-phase induction motors according to claim 2 is characterized in that: remove a cover and have high speed number of pole-pairs p in motor stator
1With middling speed number of pole-pairs p
2Three phase windings of two kinds of different numbers of pole-pairs, at this moment whole stator winding become and are the double speed variable-pole winding, wherein for middling speed number of pole-pairs p
2For triangle (Δ) connection, for low speed number of pole-pairs p
3Two-way star parallel connection method add one tunnel star series connection (2Y+Y) connection, drawing line end is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206041712U CN201860237U (en) | 2010-11-12 | 2010-11-12 | Alternating-current variable pole three-speed three-phase induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206041712U CN201860237U (en) | 2010-11-12 | 2010-11-12 | Alternating-current variable pole three-speed three-phase induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201860237U true CN201860237U (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206041712U Expired - Lifetime CN201860237U (en) | 2010-11-12 | 2010-11-12 | Alternating-current variable pole three-speed three-phase induction motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201860237U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986531A (en) * | 2010-11-12 | 2011-03-16 | 武汉金路达电机有限公司 | Alternating-current pole-changing three-speed three-phase induction motor |
| CN102324797A (en) * | 2011-09-15 | 2012-01-18 | 刘学峰 | Two-path generator circuit with opened head ends and tail ends of winding and transformer applying same |
| CN112448515A (en) * | 2019-08-15 | 2021-03-05 | 比亚迪股份有限公司 | Automobile, motor and energy conversion device |
-
2010
- 2010-11-12 CN CN2010206041712U patent/CN201860237U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986531A (en) * | 2010-11-12 | 2011-03-16 | 武汉金路达电机有限公司 | Alternating-current pole-changing three-speed three-phase induction motor |
| CN102324797A (en) * | 2011-09-15 | 2012-01-18 | 刘学峰 | Two-path generator circuit with opened head ends and tail ends of winding and transformer applying same |
| CN112448515A (en) * | 2019-08-15 | 2021-03-05 | 比亚迪股份有限公司 | Automobile, motor and energy conversion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110608 Effective date of abandoning: 20120620 |