CN102005880B - Three-winding parallel single-phase induction motor - Google Patents
Three-winding parallel single-phase induction motor Download PDFInfo
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- CN102005880B CN102005880B CN201010545633A CN201010545633A CN102005880B CN 102005880 B CN102005880 B CN 102005880B CN 201010545633 A CN201010545633 A CN 201010545633A CN 201010545633 A CN201010545633 A CN 201010545633A CN 102005880 B CN102005880 B CN 102005880B
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Abstract
The invention relates to a three-winding parallel single-phase induction motor. A stator winding of the single-phase induction motor adopts a three-winding parallel connection mode, so when the single-phase induction motor operates under a rated load, the single-phase induction motor has an approximately symmetrical air gap field, has the efficiency closer to that of a same-capacity three-phase induction motor and higher power factor and is small in volume and light in weight. The single-phase induction motor comprises a shell, wherein a stator is arranged inside the shell; a rotor is arranged on a rotating shaft; the stator winding is divided into three phases A, B and C which spatially form an angle of 120 degrees respectively in turn; the phase B and the phase C are respectively connected in series with a respective capacitor; and the phase A is connected in parallel with the phase C and is reversely connected in parallel with the phase B to form a composite parallel branch so as to be connected to a single-phase power supply.
Description
Technical field
The present invention relates to a kind of motor, relate in particular to a kind of stator and adopt the parallel monocyclic-start induction motor of three windings.
Background technology
Monocyclic-start induction motor only needs single phase alternating current power supply power supply, is widely used in aspects such as industrial or agricultural, traffic, Medical Devices and household electrical appliance, yet, and to compare with the capacity three phase induction motor, the monocyclic-start induction motor volume is big, efficient is low.Its main cause is that the monophase machine air-gap field is seriously asymmetric, and negative phase-sequence magnetic field content is high, causes the waste of the energy.
Summary of the invention
The objective of the invention is in order to realize monocyclic-start induction motor air-gap field symmetry; The parallel monocyclic-start induction motor of a kind of three windings has been proposed; It adopts the parallel bind mode of three windings to the monocyclic-start induction motor stator winding, and when this monocyclic-start induction motor was moved under nominal load, air-gap field was near symmetry; Have with close efficient of capacity three phase induction motor and the power factor of Geng Gao, and volume is little, in light weight.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The parallel monocyclic-start induction motor of a kind of three windings; It comprises casing, and stator is installed in casing, and rotor is installed in the rotating shaft; Said stator winding is divided into A, B, the C three-phase that three spaces differ 120 ° successively; Wherein B, C mutually respectively with separately capacitances in series, A with constitute compound parallel branch to parallelly connected on the contrary with B again after C is in parallel, be connected to single phase poaer supply.
Said casing two ends are provided with end cap, are provided with fan in interior.
In said two electric capacity installation casing or outside the casing.
The parallel monocyclic-start induction motor of three windings of the present invention comprises casing, and installation shaft in it is installed stator in casing; Rotor is installed on axle, and said rotor adopts simple in structure, reliable cage rotor, and three-phase symmetric winding is arranged on the motor stator; Adopt the special method that connects; Connect with two capacitors, the two ends of said casing are provided with end cap, and there is fan inside.
The present invention has designed the parallel monocyclic-start induction motor of a kind of three windings, and six terminals and two capacitor bind modes of its three-phase stator winding are: the A phase winding constitutes branch road 1; B phase winding and capacitor I series connection constitute branch road 2; C phase winding and capacitor I I series connection constitute branch road 3; With constituting compound parallel branch with branch road 2 reverse parallel connections again after branch road 1 and branch road 3 parallel connections, be connected to single phase poaer supply.Basic functional principle is following: with electric current in the A phase winding is benchmark, the phase lag of electric current in the B phase winding, and the phase place of electric current is leading in the C phase winding; Therefore; Can make that the electric current in three phase windings is symmetrical basically, thereby make motor realize through selecting suitable shift capacitor near symmetrical operation.
The invention has the beneficial effects as follows: structure is unique, and the mode of connection is simple, reliable; Compare with common monocyclic-start induction motor, can effectively reduce core dimensions, reduce cost; Improve efficiency of motor and power factor, energy savings.
Description of drawings
Fig. 1 is electric machine structure figure of the present invention;
Fig. 2 is that stator winding of the present invention connects sketch map;
Fig. 3 is a stator wiring schematic diagram of the present invention.
1-bearing wherein, 2-rear end cap, 3-rotating shaft, 4-outlet box, 5-stator core, 6-joint hinge; The 7-rotor, 8-stator winding, 9-support, 10-front end housing, 11-fan housing, 12-fan; 13-stator A phase winding, 14-stator B phase winding, 15-capacitor I, 16-capacitor II, 17-stator C phase winding; The 18-single phase alternating current power supply, two leading-out terminals of 19-stator A phase winding, two leading-out terminals of 20-stator B phase winding, two leading-out terminals of 21-stator C phase winding, 22-single-phase alternating current source terminal.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Among Fig. 1, Fig. 2, Fig. 3, the parallel monocyclic-start induction motor of three windings comprises casing, and the casing two ends are provided with front end housing 10 and rear end cap 2, and front end housing 10 places are provided with fan housing 11, and fan 12 is installed in the fan housing 11.
On rear end cap 2 and front end housing 10, be provided with bearing 1, rotating shaft 3 is installed on the bearing 1.Cage rotor 7 is installed in the rotating shaft 3, and cooperates with stator core 5.On casing, also be provided with joint hinge 6.Stator core 5 is provided with stator winding 8, and stator winding 8 is connected with outlet box 4.11 of front end housing 10 and fan housings are provided with support 9.
Among the present invention, stator winding 8 is three phase windings, and the mode of connection is: stator A phase winding 13 constitutes branch road I; 15 series connection constitute branch road II to stator B phase winding 14 with capacitor I; Series connection constitutes branch road III to stator C phase winding 17 with capacitor I I16; With constituting compound parallel branch with branch road II reverse parallel connection again after branch road I and the branch road III parallel connection, be connected to single phase alternating current power supply 18.
Among Fig. 3,19 is two leading-out terminals of stator A phase winding, and 20 is two leading-out terminals of stator B phase winding, and 21 is two leading-out terminals of stator C phase winding, and 22 is the single-phase alternating current source terminal.
Basic functional principle is following: with electric current in the stator A phase winding 13 is benchmark; The phase lag of electric current in the stator B phase winding 14; The phase place of electric current is leading in the stator C phase winding 17, therefore, and can be through selecting suitable shift capacitor; Make that the electric current in three phase windings is symmetrical basically, thereby make motor realize near symmetrical operation.
Claims (3)
1. parallel monocyclic-start induction motor of winding, it comprises casing, and stator is installed in casing; Rotor is installed in the rotating shaft; It is characterized in that stator winding is divided into A, B, the C three-phase that three spaces differ 120 ° successively, wherein B, C mutually respectively with separately capacitances in series; A with constitute compound parallel branch to parallelly connected on the contrary with B again after C is in parallel, be connected to single phase poaer supply; With electric current in the A phase winding is benchmark, the phase lag of electric current in the B phase winding, and the phase place of electric current is leading in the C phase winding, through selecting suitable electric capacity, makes that the electric current in three phase windings is symmetrical basically, thereby makes motor realize near symmetrical operation.
2. the parallel monocyclic-start induction motor of three windings as claimed in claim 1 is characterized in that said casing two ends are provided with end cap, are provided with fan in interior.
3. the parallel monocyclic-start induction motor of three windings as claimed in claim 1 is characterized in that, in said two electric capacity installation casing or outside the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010545633A CN102005880B (en) | 2010-11-16 | 2010-11-16 | Three-winding parallel single-phase induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010545633A CN102005880B (en) | 2010-11-16 | 2010-11-16 | Three-winding parallel single-phase induction motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102005880A CN102005880A (en) | 2011-04-06 |
| CN102005880B true CN102005880B (en) | 2012-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010545633A Expired - Fee Related CN102005880B (en) | 2010-11-16 | 2010-11-16 | Three-winding parallel single-phase induction motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN102005880B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872854B (en) * | 2014-04-03 | 2017-05-03 | 连长国 | Asynchronous motor voltage transforming circuit |
| CN104167891A (en) * | 2014-09-04 | 2014-11-26 | 安徽美芝精密制造有限公司 | Single-phase asynchronous starting permanent magnet synchronous motor and compressor system with same |
| CN110086390B (en) * | 2018-01-25 | 2021-03-30 | 重庆和亚科技有限公司 | Power generation equipment for providing double-level voltage and movable generator set |
| IT202000003793A1 (en) * | 2020-02-25 | 2020-05-25 | Carmelo Dipasquale | Elliptical rotating magnetomotive force field generated by a three-phase inductor winding powered in single-phase such as to derive from three-phase motors performances with single-phase power supply close to those of the three-phase rating plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488692A (en) * | 2009-02-26 | 2009-07-22 | 山东大学 | Three-winding single phase induction motor of novel connecting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59148553A (en) * | 1983-02-14 | 1984-08-25 | Minoru Miyauchi | Capacitor split-phase single phase induction motor |
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2010
- 2010-11-16 CN CN201010545633A patent/CN102005880B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488692A (en) * | 2009-02-26 | 2009-07-22 | 山东大学 | Three-winding single phase induction motor of novel connecting method |
Non-Patent Citations (1)
| Title |
|---|
| JP昭59-148553A 1984.08.25 |
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| CN102005880A (en) | 2011-04-06 |
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Granted publication date: 20120905 Termination date: 20161116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |