CN102158029B - Phase number-variable asynchronous motor winding connecting method - Google Patents
Phase number-variable asynchronous motor winding connecting method Download PDFInfo
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- CN102158029B CN102158029B CN 201110076008 CN201110076008A CN102158029B CN 102158029 B CN102158029 B CN 102158029B CN 201110076008 CN201110076008 CN 201110076008 CN 201110076008 A CN201110076008 A CN 201110076008A CN 102158029 B CN102158029 B CN 102158029B
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Abstract
The invention belongs to the technical field of asynchronous motor structure designing, and relates to a phase number-variable cage rotor asynchronous motor winding connecting method. In the method, a phase number is changed by changing a stator winding coil connecting way. A rotor structure and a stand structure are the same as those of a conventional cage rotor asynchronous motor. A stator winding coil adopts different connecting ways. Double-layer winding coils at the same positions of each pole of the stator are connected at first to form coil units, and the front and tail ends of each coil unit are all led out and connected to form asynchronous motor structures with different phase numbers by the same set of windings to further realize the phase number variability and multifunction of the asynchronous motor. Power is supplied by a three-phase constant frequency constant voltage power supply or an inverter power supply. By the method, the motor is endowed with the flexibly variable phase number, stable and adjustable output frequency, and applicability to a plurality of power supply types, the running performance of the conventional motor can be effectively changed, and energy consumption is reduced.
Description
Technical field:
The invention belongs to the Induction Motor Structure design field, relate to a kind of Cage Rotor Asynchronous Motor stator winding method of attachment that the number of phases is changed by changing the stator winding coil connected mode.
Background technology:
In present various motor, the characteristics such as it is simple in structure, reliable, easy to maintenance that Cage Rotor Asynchronous Motor has are used very extensive in modern industry is produced.Because traditional AC power is symmetrical three-phase alternating-current supply, the corresponding asynchronous motor number of phases is three-phase.Design concept and connected mode that number of motor phases immobilizes and comes from motor stator winding, the number of phases fixedly asynchronous motor in stator winding manufacturing process, the stator interior that is connected between the coil is finished, in case the motor assembling is complete, the stator interior wiring just can not be done change again.In fact the asynchronous motor stator winding connects by carrying out mutually, and coil groups is drawn two end points after connecting into a phase winding again, and threephase asynchronous only has 6 terminals usually on terminal block like this.Although 6 terminals can make the three-phase winding be linked as Y and connect with Δ and connect, the number of phases of motor can not change.Because the fixing asynchronous motor of the number of phases can only move when three phase mains is powered, advantage when not embodying the polyphase asynchronous motor operation, can't accomplish a tractor serves several purposes, the asynchronous motor of this shortage number of phases change flexibility has also limited the range of operation of asynchronous motor.Along with the development of power electronic technology and control technology, the constraint that the inverter power supply asynchronous motor has been broken away from three-phase constant frequency and constant voltage mains supply not only can realize the frequency control function, also can reach covert operation purpose.End is got up, although it is simple in structure for existing motor, the number of phases of motor is malleable not, and accommodation is little, uses flexibility ratio little, is difficult to satisfy the power industry demand of develop rapidly.
Summary of the invention:
The object of the invention is to overcome the shortcoming that prior art exists, seek to design a kind of new structure and the changeable number of phases type variable asynchronous motor of stator coil connected mode, in the situation that does not change stator winding structure, by changing the connected mode between the varitron coil, same asynchronous motor forms the threephase asynchronous running status by corresponding inverter power supply, or two-phase, four phases, six phases, the asynchronous motor running status of ten two-phases, when the asynchronous motor number of phases increases, advantage is obvious during multi-phase operation, in the certain situation of motor total capacity, each single-phase capacity reduces during multi-phase operation, reduces the requirement to power device in the inverter one-phase circuit; The fault-tolerance of heterogeneous structure strengthens makes motor short time phase-deficient operation become possibility, improves the motor reliability of operation; After increasing, number of motor phases so that rotor harmonic current content reduces, improves the motor operational efficiency; The elimination of space magnetic potential reduces the increase of polyphase asynchronous motor electromagnetic torque pulsation component frequency, amplitude, and reduces the loss of rotor winding, improves the runnability of motor.
In order to realize the foregoing invention purpose, the rotor of the number of phases type variable Cage Rotor Asynchronous Motor that the present invention relates to and rotor and the support that support adopts traditional Cage Rotor Asynchronous Motor, stator winding coil adopts different connected modes, formation connects into the Induction Motor Structure of the multiple number of phases by same set of winding, realizes the variable and a tractor serves several purposes of the asynchronous motor number of phases; The number of stator slots Z of number of phases type variable asynchronous motor
1For being not more than 200 positive integer, number of pole-pairs p is not more than 10 positive integer, Z
1With the relation of p also so that the every utmost point groove of stator is counted n=Z
1/ (2p) for just integrating number; Stator winding is two layer winding, and every coil number under extremely equates with the every utmost point groove of stator number, is n; Get each coil that is positioned at same spatial location under the stator different poles, adopt oppositely or forward, the serial or parallel connection mode connects to form a coil groups in advance, the coil groups number of composition is n, the number of endpoint of drawing is 2n; N closes number, and m closes the just whole approximate number of several n except 1, and stator winding adopts different winding connecting structure corresponding to number of phases m to make asynchronous motor become m phase motor; M is different positive integer value and variable, namely consists of number of phases type variable asynchronous motor; This motor adopts three-phase constant frequency constant voltage source or inverter power supply power supply.
The present invention compared with prior art, the number of motor phases of its formation changes flexibly, stable output power is adjustable, is applicable to the multiple power sources pattern, can effectively change the runnability of existing motor, reduces energy resource consumption.
Description of drawings:
Fig. 1 is the variable asynchronous motor stator winding of the number of phases of 1 pair of utmost point, 24 grooves, 5/6 short distance ratio.
Fig. 2 is each phase space location drawing of ten two-phase asynchronous motor stators.
Fig. 3 is ten two-phase asynchronous motors, one phase winding connection layouts.
Fig. 4 is each phase space location drawing of Six-Phase Asynchronous Motors stator.
Fig. 5 is Six-Phase Asynchronous Motors one phase winding connection layout.
Fig. 6 is each phase space location drawing of four phase asynchronous motor stators.
Fig. 7 is four phase asynchronous motors, one phase winding connection layouts.
Fig. 8 is each phase space location drawing of threephase asynchronous stator.
Fig. 9 is threephase asynchronous one phase winding connection layout.
Figure 10 is each phase space location drawing of two-phase asynchronous motor stator.
Figure 11 is two-phase asynchronous motor one phase winding connection layout.
Embodiment:
Also the present invention is described in further detail by reference to the accompanying drawings below by embodiment.
Present embodiment selects that a number of pole-pairs p is 1, number of stator slots Z
1Be 24, short distance than β is 5/6 Cage Rotor Asynchronous Motor; The every utmost point groove of stator number is
Except 1, closing several 12 whole approximate number is 12,6,4,3 and 2, and namely the motor stator winding can connect into ten two-phases, six phases, four phases, three-phase, two-phase asynchronous motor; Its slot-pitch angle is
Coil span is
Limit, 24 groove coil upper stratas of stator with 1,2,3 ... 24 respectively expressions, lower floor limit with 1 ', 2 ', 3 ' ... 24 ' respectively expressions; Coil side 1 and 11 ', 2 and 12 ' ... 12 and 22 ', 13 and 23 ', 14 and 24 ', 15 and 1 ' ... 24 and 10 ' respectively form 24 stator short-chorded coils; A coil 1 and 11 ' extremely descend the coil 13 of same position and 23 ' differential concatenation to form a coil groups with another under extremely, draw at the two ends 1 and 13 of coil groups; Connect into respectively other 11 coil groups and draw the two ends of each coil groups according to the same manner, its stator winding has 12 coil groups and 24 end points, as shown in Figure 1.
Embodiment 1: selected Cage Rotor Asynchronous Motor stator is connected into ten two-phase winding
Ten two-phase winding of present embodiment spatially differ 15 ° of electrical degrees by 4 and the separate three-phase Y connection winding of mid point forms, and 4 three phase windings are used respectively A
1B
1C
1, A
2B
2C
2, A
3B
3C
3, A
4B
4C
4Expression, wherein A
2Phase is leading A spatially
115 ° mutually, by that analogy; Ten each phase axis of two-phase phase stator winding position relationship spatially as shown in Figure 2; When number of phases m was 12, every extremely every phase groove number was q,
Q is that 1 coil groups of 1 expression is a phase winding, and then 1 and 13 is A
1The ends A of phase winding
1With X
1, A
1Phase winding connects sees Fig. 3; In like manner draw other each phase winding winding diagram, obvious 1,2,3 ... the A of 24 corresponding each phase winding
1, A
2, A
3, A
4, Z
1, Z
2, Z
3, Z
4, B
1, B
2, B
3, B
4, X
1, X
2, X
3, X
4, C
1, C
2, C
3, C
4, Y
1, Y
2, Y
3, Y
4End points can be connected into ten two-phase asynchronous motors with selected motor according to the above-mentioned mode of connection.
Embodiment 2: selected Cage Rotor Asynchronous Motor stator is connected into six phase windings
Six phase windings of present embodiment spatially differ 30 ° of electrical degrees by 2 and the separate three-phase Y connection winding of mid point forms, and 2 three phase windings are used respectively A
1B
1C
1, C
2B
2C
2Expression, wherein A
2Phase is leading A spatially
130 ° mutually, six each phase axis of phase stator winding position relationship spatially as shown in Figure 4; When number of phases m was 6, every extremely every phase groove number was q,
Q is that 2 coil groups series aiding connections of 2 expressions become a phase winding, and namely 13 are connected with 2, and then 1 and 14 is A
1The ends A of phase winding
1With X
1, A
1The phase winding connection layout is seen Fig. 5; In like manner draw other each phase winding winding diagram, obvious 1,3,5 ... the A of 23 corresponding each phase winding
1, A
2, Z
1, Z
2, B
1, B
2, X
1, X
2, C
1, C
2, Y
1, Y
2End points; This motor can be connected into Six-Phase Asynchronous Motors according to the above-mentioned mode of connection.
Embodiment 3: selected Cage Rotor Asynchronous Motor stator is connected into four phase windings
Four phase windings of present embodiment are comprised of 2 two phase windings that spatially differ 45 ° of electrical degrees, and four phase windings are used respectively A
1B
1, A
2B
2Expression, wherein A
2Phase is leading A spatially
145 ° mutually, B
1Phase is leading A spatially
190 ° mutually; Four each phase axis of phase stator winding position relationship spatially as shown in Figure 6; When number of phases m was 4, every extremely every phase groove number was q;
Q is that 3 coil groups series aiding connections of 3 expressions become a phase winding, namely 13 is connected with 2,14 is connected with 3, and then 1 and 15 is A
1The ends A of phase winding
1With X
1, A
1The phase winding connection layout is seen Fig. 7; In like manner can draw other each phase winding winding diagram, obvious 1,4,7 ... the A of 22 corresponding each phase winding
1, A
2, B
1, B
2, X
1, X
2, Y
1, Y
2End points; This motor can be connected into four phase asynchronous motors according to the above-mentioned mode of connection.
Embodiment 4: selected Cage Rotor Asynchronous Motor stator is connected into three phase windings
Three phase windings of present embodiment connect winding by the Y of 120 ° of electrical degrees of mutual deviation on the space and form, three phase windings represent with ABC respectively, spatially lag behind mutually 120 ° mutually of A of B 120 ° mutually of leading A spatially mutually wherein, C, each phase axis of threephase stator winding position relationship spatially is as shown in Figure 8; When number of phases m was 3, every extremely every phase groove number was q,
Q is that 4 coil groups series aiding connections of 4 expressions become a phase winding, namely 13 is connected with 2,14 is connected with 3,15 is connected with 4, and then 1 and 16 is ends A and the X of A phase winding, and A phase winding connection layout is seen Fig. 9; In like manner can draw B, C phase winding winding diagram, A, Z, B, X, C, the Y end points of obvious 1,5,9,13,17,21 corresponding each phase winding; This motor can be connected into threephase asynchronous according to the above-mentioned mode of connection.
Embodiment 5: selected Cage Rotor Asynchronous Motor stator is connected into two-phase winding
The two-phase winding of present embodiment spatially differs 90 ° of electrical degrees, represents with AB respectively, and B 90 ° mutually of leading A spatially mutually wherein, each phase axis of two-phase stator winding position relationship spatially is as shown in figure 10; When number of phases m was 2, every extremely every phase groove number was q,
Q is that 6 coil groups series aiding connections of 6 expressions become a phase winding, namely 13 is connected with 2,14 is connected with 3,15 is connected with 4,16 is connected with 5,17 is connected with 6, and then 1 and 18 is ends A and the X of A phase winding, and A phase winding connection layout is seen Figure 11; In like manner can draw B phase winding winding diagram, A, B, X, the Y end points of obvious 1,7,13,19 corresponding each phase winding; This motor can be connected into phase asynchronous motor according to the above-mentioned mode of connection.
Claims (1)
1. phase number-variable asynchronous motor winding connecting method, it is characterized in that adopting rotor and the support of number of phases type variable Cage Rotor Asynchronous Motor, stator winding coil adopts different connected modes, formation connects into the Induction Motor Structure of the multiple number of phases by same set of winding, realizes the variable and a tractor serves several purposes of the asynchronous motor number of phases; The number of stator slots Z of number of phases type variable asynchronous motor
1For being not more than 200 positive integer, number of pole-pairs p is not more than 10 positive integer, Z
1Make the every utmost point groove of stator count n=Z with the relation of p
1/ (2p) for just integrating number; Stator winding is the two layer winding structure, and every coil number under extremely equates with the every utmost point groove of stator number, is n; Get each coil that is positioned at same spatial location under the stator different poles, adopt oppositely or forward, the serial or parallel connection mode connects to form a coil groups in advance, the coil groups number of composition is for just integrating number n, the number of endpoint of drawing is 2n; M closes the just whole approximate number of several n except 1, and stator winding adopts different winding connecting structure corresponding to number of phases m to make asynchronous motor become m phase motor, and namely number of phases type variable asynchronous motor adopts the power supply of three-phase constant frequency constant voltage source or inverter power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110076008 CN102158029B (en) | 2011-03-22 | 2011-03-22 | Phase number-variable asynchronous motor winding connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110076008 CN102158029B (en) | 2011-03-22 | 2011-03-22 | Phase number-variable asynchronous motor winding connecting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102158029A CN102158029A (en) | 2011-08-17 |
| CN102158029B true CN102158029B (en) | 2013-03-27 |
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|---|---|---|---|
| CN 201110076008 Expired - Fee Related CN102158029B (en) | 2011-03-22 | 2011-03-22 | Phase number-variable asynchronous motor winding connecting method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023252B (en) * | 2013-01-11 | 2015-01-07 | 青岛大学 | Winding connection method for derating symmetry steady-state operation of asynchronous machine |
| CN108964548A (en) * | 2018-06-13 | 2018-12-07 | 哈尔滨理工大学 | The ten two-phase permanent magnet synchronous motor fault tolerant control methods based on output torque capacity |
| CN113178845B (en) * | 2021-04-25 | 2023-03-31 | 哈尔滨旋驰电气科技有限公司 | Alternating current power supply phase number conversion method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059053A (en) * | 1990-08-14 | 1992-02-26 | 山东省文登市第二电机厂 | Single-phase, polarity-reversing and adjustable speed motor |
| US6349463B1 (en) * | 1999-09-30 | 2002-02-26 | Reliance Electric Technologies, Llc | Method of making an electric motor stator assembly |
| CN100454725C (en) * | 2004-08-06 | 2009-01-21 | 中国人民解放军海军工程大学 | Polyphase rectification / three-phase auxiliary excitation control high-speed induction generator |
| CN100561834C (en) * | 2007-11-07 | 2009-11-18 | 中国矿业大学 | The brushless dual-feed motor of concealed magnetic pole cage type rotor structure |
| CN101364751B (en) * | 2007-12-21 | 2011-01-26 | 清华大学 | Method for modifying double layer winded performing winding into Y-Delta mixed performed winding |
| CN101908807B (en) * | 2010-07-22 | 2011-12-14 | 李树广 | Multi-winding asynchronous change-pole generator |
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2011
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