CN2367013Y - Three phase, voltage regulation and cage type variable speed electric motor - Google Patents
Three phase, voltage regulation and cage type variable speed electric motor Download PDFInfo
- Publication number
- CN2367013Y CN2367013Y CN 99201255 CN99201255U CN2367013Y CN 2367013 Y CN2367013 Y CN 2367013Y CN 99201255 CN99201255 CN 99201255 CN 99201255 U CN99201255 U CN 99201255U CN 2367013 Y CN2367013 Y CN 2367013Y
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- Prior art keywords
- winding
- phase
- stator
- cage type
- pole
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Abstract
The utility model relates to a three-phase, voltage regulating, squirrel cage type and stepless variable speed electromotor, which is characterized in that a stator is provided with two six-pole windings each of which is respectively concentrated and wound on three independent magnetic poles with space position difference of 120 DEG; the two six-pole windings are spatially perpendicular and alternately uniformly distributed on the stator; one winding is provided with a three-phase ac supply and the other winding is provided with a three-phase ac supply with phase shifting of 90 DEG by a capacitor. The utility model with the straight slot squirrel cage type rotor has the advantages of simple structure, easy fabrication, high power factor and wide regulating range. Motor speed can be regulated in the stepless way by regulating voltage. The utility model is suitable for various devices needing speed regulation and traction motors of electric locomotives.
Description
The utility model belongs to motor, and particularly a kind of input three-phase alternating-current supply by supply voltage is regulated, is realized the motor of step-less adjustment rotating speed.
At present, what speed governing was best is DC motor, secondly is single-phase series commutator motor, three-phase tandem motor with stepless speed regulation, the structure of these three kinds of motor, rotor is wire wound entirely, preceding two kinds of motors are provided with commutator, and a kind of motor in back has slip ring, and the brush of Mechanical Contact is arranged entirely.The electric machine structure complexity, the failure rate height can not be made high-voltage motor, and the scope of application is restricted.The AC speed regulating motor that Chinese patent " 96110104.0 squirrel-cage ac adjustable speed motor " provides a kind of squirrel-cage pole-changing, phase shift to combine, though speed-regulating range width, but stator structure complexity, the stator pole-changing makes stator winding wiring complexity, the machinery phase shift needs mechanical transmission mechanism, and these all make stator manufacturing and electrical control complicated.
The purpose of this utility model is, overcome the deficiencies in the prior art, design and produce a kind of three phase voltage regulating formula mouse-cage type motor with stepless speed regulation, commutator, brush mechanical part need be set, utilize transformer principle, three-phase alternating current is delivered on the motor rotor, provide a threephase stator magnetic field to rotor current again, rotor current and this stator field effect produce electromagnetic torque, drive rotor rotation, by regulating motor power voltage, realize the purpose of step-less adjustment motor speed.
The technical solution of the utility model is following realization: a kind of three phase voltage regulating formula mouse-cage type motor with stepless speed regulation, comprise rotor, stator, casing, end cap, output shaft, its stator has two covers, 6 utmost point windings, every cover winding is concentrated respectively and is wound on 3 independent magnetic poles of 120 ° of space potential differences, if pole shoe, 6 space of pole winding quadratures are alternate is distributed on the stator for two covers, be three-phase alternating-current supply on the cover winding, and another set of winding is for passing through the three-phase alternating-current supply after 90 ° of the capacitor phase shifts; Rotor is the straight trough mouse-cage type.
The stator winding pole body can be salient pole or non-salient pole; When stator two cover winding parameter difference are big, narrow down based on the winding pole body that send electricity, do not establish pole shoe, widen based on the winding pole body of excitation, establish pole shoe.
Operation principle of the present utility model is, stator winding turns to independently magnetic pole type for concentrating, as a winding of transformer, and W
A, W
B, W
CBe a cover winding, connect three phase mains, W
LA, W
LB, W
LCBe another set of winding, connect that 6 utmost points are distributed on the stator, 120 ° of cover utmost point space, winding place potential differences, 120 ° of utmost point space, another set of winding place potential differences, corresponding W by the three phase mains after 90 ° of the capacitor phase shifts
AWith W
LA, W
BWith W
LB, W
CWith W
LC180 ° of utmost point space, winding place potential differences; The sliver of rotor is equivalent to the secondary winding of step-down transformer.
Be added in W
A, W
B, W
CVoltage on the one cover winding is respectively U
A, U
B, U
C, be added in W
LA, W
LB, W
LCVoltage on the another set of winding is respectively U
LA, U
LB, U
LC, voltage U
LALeading U
A90 °, voltage U
LBLeading U
B90 °, voltage U
LCLeading U
C90 °, so magnetic field Φ
LALeading Φ
A90 °, magnetic field Φ
LBLeading Φ
B90 °, magnetic field Φ
LCLeading Φ
C90 °, former magnetic flux is 90 ° after the current hysteresis that these magnetic fluxs are inducted in rotor bar.Φ
AWith Φ
B, Φ
BWith Φ
C, Φ
CWith Φ
AThe resultant current of inducting in rotor bar is just respectively by magnetic field Φ
LC, Φ
LA, Φ
LB, and electric current is identical with the magnetic field phase place, and same, Φ
LAWith Φ
LB, Φ
LBWith Φ
LC, Φ
LCWith Φ
LAThe resultant current of inducting in rotor bar is just respectively by magnetic field Φ
C, Φ
A, Φ
B, and electric current is opposite with the magnetic field phase place, 180 ° of phase differences.Utilize transformer principle, send electricity to motor rotor, the stator field effect of induced current in the rotor bar and same-phase or antiphase produces electromagnetic torque, drives rotor rotation, produces electromagnetic torque as dc electromotor principle.The difference that the utility model produces driving torque and asynchronous motor generation driving torque is, the utility model is supplied with rotor induced current by a cover winding, another set of winding provides stator field, and supplying with rotor current and stator field is provided is that two magnetic fields produce electromagnetic torque; And asynchronous motor, stator rotating magnetic field cutting rotor sliver, induced current and rotating magnetic field effect in sliver produce electromagnetic torque, and supplying with rotor current is a magnetic field with stator field is provided.
The utility model has the advantages that: the utility model is to utilize dc electromotor principle to produce electromagnetic torque, so regulate the motor three-phase mains voltage, can realize the purpose of large-scale stepless adjusting motor speed.Its various characteristics is same as the characteristic of single-phase series commutator motor, near the characteristic of DC motor.Simple in structure, easily manufactured, cost is lower, need not commutator, brushless mechanical part.It is two three phase mains of 90 ° that the motor three phase mains adopts the capacitor phase shift to obtain phase difference.Reliable, failure rate is low, power factor height (Cos Φ＞0.8), and governor control characteristics is good, speed-regulating range width (＞5: 1).The utility model is applicable to lifting appliance, energy-saving blower fan, water pump, the manufacturing machine of need speed governing, the particularly suitable independent electric power supply, as diesel generation locomotive traction motor, do not need the capacitor phase shift, it is two three phase mains of 90 ° that generator can be supplied with phase difference.
Below in conjunction with drawings and Examples, the utility model will be further described:
Fig. 1 is the organigram of the utility model three phase voltage regulating formula mouse-cage type motor with stepless speed regulation
Fig. 2 is the A-A profile of Fig. 1
Fig. 3 is the organigrams of stator two cover winding parameter difference when big
By Fig. 1,2 as seen, three phase voltage regulating formula mouse-cage type motor with stepless speed regulation of the present utility model comprises rotor 1, stator 2, casing 3, end cap 4, output shaft 5, and its stator has two covers, 6 utmost point windings, W
A, W
B, W
CBe a cover winding, concentrate to be wound on 3 independent magnetic poles of 120 ° of space potential differences, connect three phase mains, W
LA, W
LB, W
LCBe another set of winding, concentrate to be wound on 3 independent magnetic poles of 120 ° of space potential differences, connect, establish pole shoe 6, two covers 6 space of pole winding quadratures are alternate and be distributed on the stator corresponding W by the three phase mains after 90 ° of the capacitor phase shifts
AWith W
LA, W
BWith W
LB, W
CWith W
LC180 ° of utmost point space, winding place potential differences; Be added in 90 ° of two two three-phase alternating-current supply voltage phase difference ≈ of cover on the windings; Rotor is the straight trough mouse-cage type, and the sliver of rotor is equivalent to the secondary winding of step-down transformer.
Be added in W
A, W
B, W
CVoltage on the one cover winding is respectively U
A, U
B, U
C, be added in W
LA, W
LB, W
LCVoltage on the another set of winding is respectively U
LA, U
LB, U
LC, voltage U
LALeading U
A90 °, voltage U
LBLeading U
B90 °, voltage U
LCLeading U
C90 °, so magnetic field Φ
LALeading Φ
A90 °, magnetic field Φ
LBLeading Φ
B90 °, magnetic field Φ
LCLeading Φ
C90 °, former magnetic flux is 90 ° after the current hysteresis that these magnetic fluxs are inducted in rotor bar.Φ
AWith Φ
B, Φ
BWith Φ
C, Φ
CWith Φ
AThe resultant current of inducting in rotor bar is just respectively by magnetic field Φ
LC, Φ
LA, Φ
LB, and electric current is identical with the magnetic field phase place, and same, Φ
LAWith Φ
LB, Φ
LBWith Φ
LC, Φ
LCWith Φ
LAThe resultant current of inducting in rotor bar is just respectively by magnetic field Φ
C, Φ
A, Φ
B, and electric current is opposite with the magnetic field phase place, 180 ° of phase differences.
The stator current as shown in Figure 1 and the instantaneous direction of magnetic flux, with the direction of induced current in 6 slivers of right-hand rule judgement, electric current should outwards flow out from 1,2,4 in the sliver 1,2,4, and electric current should enter by 3,5,6 in the sliver 3,5,6.Judge the direction that produces electromagnetic force in the sliver with left hand rule, to form the direction of torque be consistent to the electromagnetic force that produces in 6 slivers as a result, and rotor is moved in the direction of the clock.Among the figure, I
A, I
B, I
C, I
LA, I
LB, I
LCBe transient current.
As seen from Figure 3, when stator two cover winding parameter difference are big, to send the winding W of electricity
A, W
B, W
CPole body narrows down, and does not establish pole shoe, based on the winding W of excitation
LA, W
LB, W
LCPole body is widened, and establishes pole shoe.
Claims (3)
1, a kind of three phase voltage regulating formula mouse-cage type motor with stepless speed regulation, comprise rotor, stator, casing, end cap, output shaft, it is characterized in that, stator has two covers, 6 utmost point windings, every cover winding is concentrated respectively and is wound on 3 independent convex poles of 120 ° of space potential differences, establishes pole shoe, and 6 space of pole winding quadratures are alternate is distributed on the stator for two covers, one cover be a three-phase alternating-current supply on the winding, and another set of winding is for passing through the three-phase alternating-current supply after 90 ° of the capacitor phase shifts; Rotor is the straight trough mouse-cage type.
2, three phase voltage regulating formula mouse-cage type motor with stepless speed regulation as claimed in claim 1 is characterized in that, the pole body of two cover windings of stator winding is a non-salient pole.
3, three phase voltage regulating formula mouse-cage type motor with stepless speed regulation as claimed in claim 1 is characterized in that, in the two cover windings of stator, narrows down based on the winding pole body that send electricity, does not establish pole shoe, widens based on the winding pole body of excitation, establishes pole shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99201255 CN2367013Y (en) | 1999-02-03 | 1999-02-03 | Three phase, voltage regulation and cage type variable speed electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99201255 CN2367013Y (en) | 1999-02-03 | 1999-02-03 | Three phase, voltage regulation and cage type variable speed electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2367013Y true CN2367013Y (en) | 2000-03-01 |
Family
ID=33997064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99201255 Expired - Fee Related CN2367013Y (en) | 1999-02-03 | 1999-02-03 | Three phase, voltage regulation and cage type variable speed electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2367013Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025201B (en) * | 2006-04-04 | 2012-12-19 | 福特全球技术公司 | Electric machine winding arrangement |
| WO2023164870A1 (en) * | 2022-03-03 | 2023-09-07 | 罗灿 | Double-pole-changing double-feed asynchronous motor |
-
1999
- 1999-02-03 CN CN 99201255 patent/CN2367013Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025201B (en) * | 2006-04-04 | 2012-12-19 | 福特全球技术公司 | Electric machine winding arrangement |
| WO2023164870A1 (en) * | 2022-03-03 | 2023-09-07 | 罗灿 | Double-pole-changing double-feed asynchronous motor |
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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 |