CN209375282U - A kind of two-phase symmetrical alternating current electricity becomes the covert motor of exchange of single-phase alternating current - Google Patents
A kind of two-phase symmetrical alternating current electricity becomes the covert motor of exchange of single-phase alternating current Download PDFInfo
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- CN209375282U CN209375282U CN201920028553.6U CN201920028553U CN209375282U CN 209375282 U CN209375282 U CN 209375282U CN 201920028553 U CN201920028553 U CN 201920028553U CN 209375282 U CN209375282 U CN 209375282U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model discloses the alternating current generators that a kind of two-phase alternating current becomes single-phase alternating current, it include: the rotor being arranged in alternating current generator shaft, first segment stator on the outside of rotor is set, the first input winding and the first output winding are provided on first segment stator, second segment stator on the outside of rotor is set, the second input winding and the second output winding are provided on second segment stator, the first output winding is connected with the second output winding；First input winding is connected to the first output winding by electromagnetic coupling, and the second input winding is connected to the second output winding by electromagnetic coupling；90 ° of electrical angles of axis of the advanced second input winding of the axis of first input winding, 45 ° of electrical angles of axis of axis lag the first input winding of the first output winding, 45 ° of electrical angles of axis of the advanced second input winding of the axis of the second output winding.Two-phase alternating current is become single-phase alternating current by the alternating current generator of the utility model, solves the problems, such as three-phase imbalance, high reliablity and cost is lower.
Description
Technical field
The utility model belongs to technical field of motors, and in particular to a kind of two-phase symmetrical alternating current electricity becomes the friendship of single-phase alternating current
Rheology phase motor.
Background technique
In global power industry, three-phase system alternating current has occupied absolute dominant position, but because single-phase load is deposited
Leading to three-phase load, there is also imbalance problems.China's electric railway uses single phase industrial frequency AC system formula, but three-phase current
Imbalance, harmonic wave, idle problem still remain, especially the most prominent with three-phase current unbalance problem.To solve this problem, exist
In the prior art, electric railway generallys use following two mode: 1, the Semiconductor Converting Technology route directly handed over using friendship；2, using base
In the three phase combined cophase supply device technology path of the list of symmetrical compensation principle.Though they solve three-phase current unbalance,
Harmonic wave, idle problem, but there is also system complex, the disadvantage that cost is high, reliability is relatively low.
Utility model content
In order to overcome the above technical defects, on the basis of existing three-phase to two phase balance transformer, the utility model is provided
Two-phase symmetrical alternating current electricity becomes the exchange covert motor of single-phase alternating current, by change the first input winding, the first output winding,
The spatial position of second input winding and the second output winding, becomes single-phase alternating current for two-phase alternating current, solves three-phase not
The problem of balance, device for harmonic and idle problem, structure is simple, high reliablity and cost is lower.
To solve the above-mentioned problems, the utility model is achieved by following technical scheme:
Two-part rotor on alternating current generator single-turn axis is set, and is provided with the resistance of perforation on the two-part rotor
Buddhist nun's winding；
It is set in the first segment stator of described rotor one end, the first input winding and are provided on the first segment stator
One output winding；
Be set in the second segment stator of the rotor other end, be provided on the second segment stator the second input winding and
Second output winding, the first output winding are connected with the second output winding；
The first input winding is connected to the first output winding by electromagnetic coupling, and the second input winding is logical
It crosses electromagnetic coupling and is connected to the second output winding；
90 ° of electrical angles of axis of the advanced second input winding of the axis of the first input winding.
Compared with prior art, the alternating current generator of the utility model is by changing the first input winding, the second input winding
Spatial position so that leading phase lags 45 °, mutually advanced 45 ° are lagged, to realize output by the space arrangement of winding
The voltage-phase of two phase windings is identical, to obtain single-phase alternating current, structure is simple, high reliablity, and can directly pass through
Existing alternating current generator is transformed, low cost.
The axis and described second of the first output winding exports winding as a further improvement of the utility model,
Axis must keep spatially straight line.
The axis lag of the first output winding the first input winding as a further improvement of the utility model,
45 ° of electrical angles of axis, 45 ° of electrical angles of axis of the advanced second input winding of the axis of the second output winding.
The first output winding and the second output windings in series as a further improvement of the utility model,.
The first output winding and the second output winding parallel as a further improvement of the utility model,.
The first input winding and the second input winding can be used point as a further improvement of the utility model,
One of cloth winding, short distance winding, Concentrical winding, sine windings are a variety of.
The two-part rotor is uniaxial iron core as a further improvement of the utility model, and the two-part turns
Son be cage rotor, phase-wound rotor, permanent magnet rotor, DC excitation formula structure one kind.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing, in which:
The integrally-built schematic diagram of Fig. 1 the utility model；
The schematic diagram of Fig. 2 the utility model partial structurtes；
The schematic diagram of Fig. 3 the utility model partial structurtes；
The schematic diagram of Fig. 4 the utility model partial structurtes；
The schematic diagram of Fig. 5 the utility model partial structurtes；
The schematic diagram of Fig. 6 the utility model embodiment one；
The schematic diagram of Fig. 7 the utility model embodiment one；
The schematic diagram of Fig. 8 the utility model embodiment one；
The schematic diagram of Fig. 9 the utility model embodiment one；
The waveform diagram of one input voltage of Figure 10 the utility model embodiment and output voltage；
Two input current of Figure 11 the utility model embodiment and the waveform diagram for exporting electric current.
Description of symbols:
1- first segment stator；2- second segment stator；3- rotor；4- first inputs winding；5- first exports winding；6- second
Input winding；7- second exports winding, 8- Damper Winding.
100- motor single-turn axis.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
The utility model discloses the alternating current generators that a kind of two-phase alternating current becomes single-phase alternating current, as Figure 1-Figure 5, packet
The two-part rotor 3 being arranged on alternating current generator single-turn axis is included, and is provided with the Damper Winding 8 of perforation on two-part rotor 3；
It is set in the first segment stator 1 of 3 one end of rotor, the first input winding 4 and the first output winding 5 are provided on first segment stator 1；
It is set in the second segment stator 2 of 3 other end of rotor, the second input winding 6 and the second output winding are provided on second segment stator 2
7, the first 5 windings of output are connected with the second output winding 7；First input winding 4 is connected to the first output by electromagnetic coupling
Winding 5, the second input winding 5 are connected to the second output winding 7 by electromagnetic coupling；The axis advanced the of first input winding 4
90 ° of electrical angles of axis of two input windings 6.It is hindered on rotor 3, the setting of first segment stator 1 and second segment stator 2 and rotor
Refer to the prior art for the setting of Buddhist nun's winding 8, will not repeat them here.
By the space arrangement of winding, so that leading phase lags 45 °, mutually advanced 45 ° are lagged, to realize output two-phase
The voltage-phase of winding is identical.Simultaneously as the Damper Winding 8 of flume structure is provided on rotor, for eliminating in rotor 3
2 frequency multiplication electric currents and slot ripples, rotor 3 are in unloaded rotation status synchronous or close to synchronous rotational speed.Meanwhile first can also be eliminated
Negative phase-sequence magnetomotive force in Duan Dingzi 1 and second segment stator 2.
When the first input winding 4 and the second input winding 6 input symmetrical two-phase symmetrical voltage, rotation is generated in motor
Magnetic field drives rotor rotation, at this point, the first output winding 5 and the second output winding 7 generate same-phase induced electromotive force.
Further, first output winding 5 axis with second output winding 7 axis must keep spatially one directly
Line.
According to the time of alternating current generator, space uniformity principle, when alternating current time phasor is passed by θ electrical angle, motor
Magnetic field space vector will pass by the principle of the space θ electrical angle, and input winding and the axis angle α for exporting winding can be at 0 ° extremely
It is arbitrarily set between 360 °.
Most preferably, 45 ° of electrical angles of axis of axis lag the first input winding 4 of the first output winding 5, the second output
45 ° of electrical angles of axis of the advanced second input winding 6 of the axis of winding 7.Winding is arranged using such mode, facilitates wiring.
Preferably, the first output winding 5 using concatenated mode, then can be not necessarily to the second output winding 7 using connecting
Consider the different problem of two-part rotor parameter.
Preferably, the first output winding 5 can also use in parallel with the second output winding 7, by the way of in parallel, then need
Guarantee two-part rotor parameter strict conformance.
In order to weaken higher hamonic wave well, the first input winding 4 and the second input winding 6 using it is distributed around
One of group, short distance winding, Concentrical winding, sine windings are a variety of, can reduced harmonic according to actual needs number, tool
Body selects winding.
Further, two-part rotor 3 is uniaxial iron core, and two-part rotor 3 is cage rotor, Wound-rotor type turn
Son, permanent magnet rotor, DC excitation formula structure one kind.Pass through DC excitation formula rotor regulating power factor.
The utility model is further explained combined with specific embodiments below.
In the present embodiment, it chooses a Y2-132S-4 asynchronous motor and carries out structure of modification, it is practical new that this can be obtained
The alternating current generator of type, as shown in Fig. 1, Fig. 6-Fig. 9, wherein the rotor of the Y2-132S-4 asynchronous motor is through rotor,
Power is about 5KW, number of poles 4, also, the through rotor using the common cast-aluminum rotor of 28 slots, and stator uses 48 slot structures, and 2
Number stator groove profile.First input winding 4 and the second input winding 6 are all made of sine windings, and winding coefficient 0.806, first is defeated
Enter winding 40 ° of position, the second input winding 6 is 90 ° of position, i.e., by the second input winding 6 relative to the first input
The position of winding 4 is exported by 6 slots, that is, 6*7.5*2=90 ° of electrical angle, the first output winding 5 and second is moved back counterclockwise
Position of the winding 7 45 ° of position, i.e., by the first output winding 5 and the second output winding 7 relative to the first input winding 4
3 slots, that is, 3*7.5*2=45 ° of electrical angle are moved back by counterclockwise.As shown in Figure 4-Figure 7, figure subscript number is coil turn
Number, digital stator slot number of getting the bid, under be designated as coil spread.
As shown in table 1- table 2 and Figure 10-Figure 11, table 1 is the covert input end of motor test data of exchange of the utility model,
Table 2 is the covert motor output end test data of exchange of the utility model, it can be seen that when the load of access is 0KW, first
The input of the voltage UT and second winding UM for inputting winding differs 89.4 ° of electrical angle, the electric current ID1 and first of the first output winding
The electric current ID2 for exporting winding differs 360 ° of electrical angle.
When the load of access is 1KW, the input of the voltage UT and second winding UM of the first input winding differs 89.5 ° of electricity
Angle, the electric current ID2 of the output winding of electric current ID1 and first of the first output winding differ 359.7 ° of electrical angle.
When the load of access is 2KW, the input of the voltage UT and second winding UM of the first input winding differs 89.6 ° of electricity
Angle, the electric current ID2 of the output winding of electric current ID1 and first of the first output winding differ 359.7 ° of electrical angle.
When the load of access is 3KW, the input of the voltage UT and second winding UM of the first input winding differs 89.5 ° of electricity
Angle, the electric current ID2 of the output winding of electric current ID1 and first of the first output winding differ 359.7 ° of electrical angle.
When the load of access is 4KW, the input of the voltage UT and second winding UM of the first input winding differs 89.7 ° of electricity
Angle, the electric current ID2 of the output winding of electric current ID1 and first of the first output winding differ 359.7 ° of electrical angle.
When the load of access is 5KW, the input of the voltage UT and second winding UM of the first input winding differs 89.5 ° of electricity
Angle, the electric current ID2 of the output winding of electric current ID1 and first of the first output winding differ 359.9 ° of electrical angle.
It is learnt by above-mentioned data, the alternating current generator of the utility model is able to achieve two-phase symmetrical alternating current electricity and becomes single-phase alternating current
Symmetry transformation.
Due to the influence of manufacturing process and winding leakage impedance, lead to actually measured voltage, electric current and theoretical value slightly
Deviation, but this deviation is within tolerance interval.
Table 1
Table 2
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, therefore it is all without departing from the content of the technical scheme of the utility model, implement according to the technical essence of the utility model to above
Any modification, equivalent variations and modification, are still within the scope of the technical solutions of the present invention made by example.
Claims (7)
1. the covert motor of exchange that a kind of two-phase symmetrical alternating current electricity becomes single-phase alternating current characterized by comprising
Two-part rotor on alternating current generator single-turn axis is set, and be provided on the two-part rotor damping of perforation around
Group；
It is set in the first segment stator of described rotor one end, the first input winding and first defeated is provided on the first segment stator
Winding out；
It is set in the second segment stator of the rotor other end, the second input winding and second are provided on the second segment stator
Winding is exported, the first output winding is connected with the second output winding；
The first input winding is connected to the first output winding by electromagnetic coupling, and the second input winding passes through electricity
Magnetic coupling is connected to the second output winding；
90 ° of electrical angles of axis of the advanced second input winding of the axis of the first input winding.
2. alternating current generator according to claim 1, which is characterized in that the axis and described second of the first output winding
The axis of output winding must keep spatially straight line.
3. alternating current generator according to claim 2, which is characterized in that the axis lag described the of the first output winding
45 ° of electrical angles of axis of one input winding, 45 ° of axis of the advanced second input winding of the axis of the second output winding
Electrical angle.
4. alternating current generator according to claim 1, which is characterized in that it is described first output winding and it is described second output around
Group series connection.
5. alternating current generator according to claim 1, which is characterized in that it is described first output winding and it is described second output around
Group is in parallel.
6. alternating current generator according to claim 1, which is characterized in that it is described first input winding and it is described second input around
One of distributed winding, short distance winding, Concentrical winding, sine windings or a variety of can be used in group.
7. alternating current generator according to claim 1, which is characterized in that the two-part rotor is uniaxial iron core, and institute
State two-part rotor be cage rotor, phase-wound rotor, permanent magnet rotor, DC excitation formula structure one kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920028553.6U CN209375282U (en) | 2019-01-08 | 2019-01-08 | A kind of two-phase symmetrical alternating current electricity becomes the covert motor of exchange of single-phase alternating current |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920028553.6U CN209375282U (en) | 2019-01-08 | 2019-01-08 | A kind of two-phase symmetrical alternating current electricity becomes the covert motor of exchange of single-phase alternating current |
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| Publication Number | Publication Date |
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| CN209375282U true CN209375282U (en) | 2019-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936233A (en) * | 2019-01-08 | 2019-06-25 | 中铁电气化局集团有限公司第二工程分公司 | A kind of two-phase symmetrical alternating current electricity becomes the covert motor of exchange of single-phase alternating current |
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- 2019-01-08 CN CN201920028553.6U patent/CN209375282U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936233A (en) * | 2019-01-08 | 2019-06-25 | 中铁电气化局集团有限公司第二工程分公司 | A kind of two-phase symmetrical alternating current electricity becomes the covert motor of exchange of single-phase alternating current |
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