CN113964989A - A high-speed and high-power 4-pole three-phase asynchronous motor 8-way parallel connection method - Google Patents
A high-speed and high-power 4-pole three-phase asynchronous motor 8-way parallel connection method Download PDFInfo
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- CN113964989A CN113964989A CN202111321527.0A CN202111321527A CN113964989A CN 113964989 A CN113964989 A CN 113964989A CN 202111321527 A CN202111321527 A CN 202111321527A CN 113964989 A CN113964989 A CN 113964989A
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- connection method
- parallel connection
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/12—Asynchronous induction motors for multi-phase current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention discloses a high-speed high-power 4-pole three-phase asynchronous motor 8-way parallel connection method, wherein the number of slots of each pole of the motor is 8, a phase belt is split, and 8 coils of each pole of each phase are divided into two parallel branches. The invention can reduce the production cost of the motor and improve the production efficiency.
Description
Technical Field
The invention relates to an 8-path parallel connection method of a high-speed high-power 4-pole three-phase asynchronous motor, which is used in the field of motor assembly.
Background
In the design of a high-power 4-pole three-phase asynchronous motor, because the motor has large capacity and small pole number, the stator coil needs to select a very low number of turns to meet the requirement of performance parameters. When the number of turns is reduced to a certain value, the circulation loss is increased sharply, and in order to avoid the circulation loss of the winding, the motor mostly adopts a bar type bar form, so that the process is complex and the cost is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an 8-path parallel connection method of a high-speed high-power 4-pole three-phase asynchronous motor, which can reduce the production cost of the motor and improve the production efficiency.
One technical scheme for achieving the above purpose is as follows: a high-speed high-power 4-pole three-phase asynchronous motor 8-path parallel connection method is characterized in that the number of slots of each pole of the motor is 8, a phase belt is split, and 8 coils of each pole of each phase are divided into two parallel branches.
Further, the phase is to be a 60 ° phase band.
Further, the difference of the electric angle of the resultant electromotive force between the two parallel branches is 0.265 °.
The 8-path parallel connection method of the high-speed high-power 4-pole three-phase asynchronous motor realizes the application of the coil type forming coil in the design of the high-capacity 4-pole motor, each performance index of the motor meets the technical input requirement, and the motor adopting the parallel connection method has obvious advantages in important parameters such as motor temperature rise, bearing temperature, vibration, noise and the like in the real machine test.
Drawings
FIG. 1 is a stator current waveform diagram of a high-speed high-power 4-pole three-phase asynchronous motor in 8-way parallel connection method in stable operation under rated load condition;
fig. 2 is an electromagnetic torque waveform diagram of a high-speed high-power 4-pole three-phase asynchronous motor in 8-way parallel connection method in stable operation under rated load condition.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is made by specific examples:
an integer slot winding is mostly adopted in the design of a high-power three-phase asynchronous motor. The invention relates to an 8-path parallel connection method of a high-speed high-power 4-pole three-phase asynchronous motor, wherein the number of slots of each phase of each pole of the motor is 8, then a 60-degree phase band is selected, the phase band is split, and 8 coils of each phase of each pole are divided into two parallel branches. Under this condition, the resultant electromotive force between the two parallel branches differs in electrical angle by only 0.265 °.
The 8 coils of a phase under one pole are labeled 1-8, and the two groups of coils are 1, 4, 6, 7 and 2, 3, 5, 8, respectively. Referring to fig. 1 and 2, simulation analysis shows that the magnetic circuit formed by the magnetic lines of force of the motor is symmetrical, the magnetic flux density distribution is uniform, the ratio of circulating current introduced by splitting the phase belt in the rated current of the motor is very small, the copper consumption is very low, and when the stator is input into a three-phase symmetrical voltage source, the output electromagnetic torque has small torque fluctuation, the ratio in the output electromagnetic torque is very low, and the overall operation is stable. The result of the simulation analysis verifies the feasibility of dividing the coil under each pole and each phase into 2 parallel branches, and further demonstrates the feasibility of adopting an 8-way parallel connection method in the design of a high-capacity 4-pole three-phase asynchronous motor.
The 4-pole 8-path connection method is applied to YGFN1120-4 motors in Shanghai Motor plants, and through test verification and external review and identification, various performance indexes of the motors meet technical input requirements, and important parameters such as motor temperature rise, bearing temperature, vibration, noise and the like are excellent. The 8-path parallel winding wiring mode of the high-power 4-pole three-phase asynchronous motor realizes the application of a coil type forming coil in the design of the high-capacity 4-pole motor, effectively reduces the motor cost and improves the production efficiency at the same time.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (3)
1. A high-speed high-power 4-pole three-phase asynchronous motor 8-path parallel connection method is characterized in that the number of slots of each pole of the motor is 8, a phase belt is split, and 8 coils of each pole of each phase are divided into two parallel branches.
2. The 8-way parallel connection method for the high-speed high-power 4-pole three-phase asynchronous motor according to claim 1, characterized in that the phase waiting is a 60-degree phase belt.
3. The 8-way parallel connection method for the high-speed high-power 4-pole three-phase asynchronous motor according to claim 1, characterized in that the difference of the resultant electromotive force electrical angle between the two parallel branches is 0.265 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111321527.0A CN113964989A (en) | 2021-11-09 | 2021-11-09 | A high-speed and high-power 4-pole three-phase asynchronous motor 8-way parallel connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111321527.0A CN113964989A (en) | 2021-11-09 | 2021-11-09 | A high-speed and high-power 4-pole three-phase asynchronous motor 8-way parallel connection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113964989A true CN113964989A (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111321527.0A Pending CN113964989A (en) | 2021-11-09 | 2021-11-09 | A high-speed and high-power 4-pole three-phase asynchronous motor 8-way parallel connection method |
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| CN (1) | CN113964989A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1118986A (en) * | 1954-02-11 | 1956-06-13 | Thomson Houston Comp Francaise | Improvements to electrical machines |
| GB1257195A (en) * | 1968-07-31 | 1971-12-15 | ||
| CN1283891A (en) * | 1999-08-10 | 2001-02-14 | 薛蕃钰 | Three-wave start method of AC motor and connection method of its windings |
| CN200980012Y (en) * | 2006-12-04 | 2007-11-21 | 泰豪科技股份有限公司 | An alternating current winding generator with single or double layers and three phases in a dispersal type |
| CN102255459A (en) * | 2011-07-29 | 2011-11-23 | 天津大学 | Stator winding connection method for low-voltage high-power multipole multiphase permanent magnet synchronous motor |
| CN204030773U (en) * | 2014-07-17 | 2014-12-17 | 华域汽车电动系统有限公司 | For the flat type copper wire ripple of three phase electric machine around armature winding |
| CN205489876U (en) * | 2016-03-17 | 2016-08-17 | 哈尔滨理工大学 | Asymmetric stator winding of four branch road three -phase alternating current motor branch roads in 324 grooves |
| CN113054780A (en) * | 2021-04-16 | 2021-06-29 | 河北电机股份有限公司 | Three-phase double-layer lap winding and motor |
-
2021
- 2021-11-09 CN CN202111321527.0A patent/CN113964989A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1118986A (en) * | 1954-02-11 | 1956-06-13 | Thomson Houston Comp Francaise | Improvements to electrical machines |
| GB1257195A (en) * | 1968-07-31 | 1971-12-15 | ||
| CN1283891A (en) * | 1999-08-10 | 2001-02-14 | 薛蕃钰 | Three-wave start method of AC motor and connection method of its windings |
| CN200980012Y (en) * | 2006-12-04 | 2007-11-21 | 泰豪科技股份有限公司 | An alternating current winding generator with single or double layers and three phases in a dispersal type |
| CN102255459A (en) * | 2011-07-29 | 2011-11-23 | 天津大学 | Stator winding connection method for low-voltage high-power multipole multiphase permanent magnet synchronous motor |
| CN204030773U (en) * | 2014-07-17 | 2014-12-17 | 华域汽车电动系统有限公司 | For the flat type copper wire ripple of three phase electric machine around armature winding |
| CN205489876U (en) * | 2016-03-17 | 2016-08-17 | 哈尔滨理工大学 | Asymmetric stator winding of four branch road three -phase alternating current motor branch roads in 324 grooves |
| CN113054780A (en) * | 2021-04-16 | 2021-06-29 | 河北电机股份有限公司 | Three-phase double-layer lap winding and motor |
Non-Patent Citations (2)
| Title |
|---|
| 张炳义;李莹;李建军;冯桂宏;刘凯;: "多极少槽永磁电机绕组并联支路间环流分析", 微电机, no. 09 * |
| 金续曾主编: "电机绕组修理手册", 31 October 2001, 北京：中国水利水电出版社 , pages: 69 - 73 * |
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Application publication date: 20220121 |