CN2048253U - Three-phase a.c. generator and starting binding-line thereof by magnet - Google Patents
Three-phase a.c. generator and starting binding-line thereof by magnet Download PDFInfo
- Publication number
- CN2048253U CN2048253U CN 88218352 CN88218352U CN2048253U CN 2048253 U CN2048253 U CN 2048253U CN 88218352 CN88218352 CN 88218352 CN 88218352 U CN88218352 U CN 88218352U CN 2048253 U CN2048253 U CN 2048253U
- Authority
- CN
- China
- Prior art keywords
- phase
- winding
- shape
- coil
- alternating current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Landscapes
- Windings For Motors And Generators (AREA)
Abstract
The utility model discloses a three-phase alternating current motor and starting binding-line thereof by magnet. The winding construction adopted by the three-phase AC generator and starting binding-line thereof by magnet is different from the traditional and existing three-phase alternating current motor. The connection of the three phase windings is not in the single delta shape or Y shape. The connection of the three phase windings is the mixed connection of multiple delta shapes and multiple Y shapes. The width of the space occupied by the coil groups which form the basic units of the windings is no longer a phase belt with a constant 60 DEG and is selected according to the number of poles of the motor and the number of stator slots. The starting connection of the windings adopts a serial circuit of multiple delta shapes and multiple Y shapes (comprising a non-integer type). The coils are fraction type.
Description
The utility model relates to three phase alternating current motor, is empty three phase alternating current motor of a kind of magnetic and starting tie line thereof.
Existing three phase alternating current motor, its winding construction have three characteristics:
1. the connection of three phase windings is single △ shape or Y shapes;
2. the elementary cell that constitutes winding is the every extremely every phase coil group in 60 ° of facies tracts fixing;
3. what adopt is traditional comparatively trigger circuit of conservative reduction applied voltage.
Because above-mentioned 1,2 two points, make winding have significant limitation, and can not give full play to the potentiality of motor, as it is big inadequately to exert oneself, efficient is not high enough, and more with material, the harmonics of magnetic force content is than higher, electric and magnetic oscillation and noise are more intense, and starting performance is level and smooth inadequately etc.
People's attempt improves motor windings, with the raising motor performance, but, make when improving winding construction owing to above-mentioned the 3rd point, often run into the unsurmountable difficulty that exists on the starting performance, thereby influence improving of other performance of motor greatly.As the high efficiency electric series of nearest design, than Y series have to starting current is increased 0.5 times, starting torque reduces by 0.2 times.
The purpose of this utility model provides a kind ofly to be improved by the winding construction to above-mentioned three phase alternating current motor, and solves the empty three phase alternating current motor of magnetic and the starting tie line thereof of above-mentioned three problems effectively.
The utlity model has following advantage:
1. reduce winding the harmonics of magnetic force content in a big way and greatly, only remaining basically slot ripples, thus can reduce stray loss greatly;
2. improved the winding distribution ratio of motor.
3. owing to above-mentioned 2 points, can improve efficiency of motor by a relatively large margin, power factor (on average about 3%), and improve other performance of motor.
4. guaranteeing or surpassing on the basis of the original performance of motor slightly, can save active material significantly and (comprise silicon steel sheet, copper material.Aluminium and insulating material etc.; ) or increase substantially motor and exert oneself.
5. adopt " starting of fractional-type coil internal impedance " circuit, can solve two indexs of starting performance easily---starting current and starting torque run in design because of difficulty.
6. when improving winding construction, the physical dimension that if can change other parameter of motor and structure designs comprehensively, the then no matter improvement of saving, the increase of exerting oneself or the performance of active material will obtain further to improve.
7. the motor lead-out wire still is 6, the conformance with standard requirement.
The winding construction that the utility model adopted is different from traditional three phase alternating current motor greatly, its principal character is: 1. the connection of three phase windings is not single △ shape or Y shape again, but comprises that the many △ shape of non-integer type, single type and the mixing of many Y shape connect.2. the width that coil groups took up space that constitutes the winding elementary cell is not 60 ° of facies tracts fixing again, but according to motor pole number and number of stator slots and selected flexibly a certain electrical degree (being called " electromagnetism band " at this) or the covert connection of the winding that is equal to it.3. the series circuit of many △ shape and many Y shape (comprising the non-integer type) is adopted in the starting of motor, winding, and coil is a fractional-type, can be referred to as " starting of fractional-type coil internal impedance " circuit.
The width of " electromagnetism band " can be selected flexibly, but closely related with the number of poles and the number of stator slots of motor.
" electromagnetism band " width can be selected to determine that the electromagnetism bandwidth of other motor pole number or number of stator slots can be shown to analogize like this with reference to table 1.In a word, select the principle of electromagnetism band to be: 1. liang winding electromagnetism band partly is synthetic, and the two part windings of make suring spatially differ 30 ° of phase places; 2. after the electromagnetism band in the phase winding synthesized, the breadth coefficient of the winding of make suring was high as far as possible; 3.Y after winding part and △ winding relativeness are partly determined, should make the harmonics of magnetic force content of winding low as far as possible.
Sketch its principle herein.
Motor of the present utility model flows through electric current and differs 30 ° of electrical degrees in time in Y winding and the △ winding.For this reason, must make two part windings spatially also differ 30 ° of electrical degrees when arranging winding, so just reach the unanimity of space-time phase place.In the case, the fundamental magnetic potential that two part windings are set up is that choosing adds mutually, thereby obtains a very strong synthetic fundamental magnetic potential.The harmonic magnetic potential that two part windings are set up then obtains very strong weakening (or offsetting fully).So just make the stray loss of motor greatly descend, three moments of motor all make moderate progress, and the electric and magnetic oscillation of motor and noise will obtain weakening to a certain degree.
In order to analyze the situation that the winding the harmonics of magnetic force weakens, (order is K to the ratio of 60 ° of corresponding harmonic magnetic potential amplitudes of facies tract winding of tradition can to count out winding V subharmonic magnetic potential amplitude
Em), the size of this ratio is the degree of reflection harmonic magnetic potential weakening directly.Suppose that 60 ° of facies tract windings are that △ shape connects, and the electric current that flows through in the electric current that flows through in the winding and the empty winding △ of the magnetic shape part equates, and all adopt and save square, then calculating K entirely
EmThe ratio formula is as follows,
In the formula: the W Δ is a △ winding turns-in-series partly
W
YBe Y winding turns-in-series partly
K
The dV ΔBreadth coefficient for △ winding V subharmonic partly
K
DVYBreadth coefficient for Y winding V subharmonic partly
V=6m ± 1 is the harmonics of magnetic force level time.
W
60 °It is the turns-in-series of 60 ° of every phases of facies tract winding.
K
DV60 °It is the breadth coefficient of 60 ° of facies tract winding V subharmonic magnetic potentials.
The utility model is described in further detail below in conjunction with drawings and Examples:
Accompanying drawing 1 is that the utility model △ shape winding and Y shape winding mix the connection schematic diagram;
Wherein Fig. 1 (a) is that the two Y shapes of single △ shape connect schematic diagram;
Fig. 1 (b) is the two Y shape schematic diagrames of two △ shapes;
Fig. 1 (c) is 3 △ shape 3Y shape schematic diagrames;
Circle 1 (d) is single △ shape
Y shape schematic diagram;
Fig. 1 (e) is single △ shape
Y shape schematic diagram.
See (a) and (b) among Fig. 1, (c), (d), (e), the schematic diagram shown in reference to the accompanying drawings, but also class is released other bind mode.
Fig. 2 is the general structure embodiment schematic diagram of winding of the present utility model.
See that this figure of Fig. 1 (a) becomes △-Y shape mixed structure and Y shape branch road to be divided into two branch roads winding coupling to be formed in parallel.Y winding coil partly is
Type.
See that this figure of Fig. 1 (c) becomes 3 △-3Y shape structure with winding coupling, and two corresponding branch roads among each phase 3Y are drawn a lead-in wire again with a lead short circuit form that coil is
Type.
See that this figure of Fig. 1 (e) becomes △-2Y shape structure with winding coupling, again that each phase Y shape is two and branch road
Coil number or number of turn place form with a lead short circuit, and Y winding coil partly is
Type.
Other figure can know according to above-mentioned analogizing.
So-called fractional-type coil, its structure is, when the integer type coil windings was that n bar branch road then changes coil the coiled 1/n branch several times number of turn originally, and the coil of the 1/n times of number of turn of all contrary signs in the winding connected mutually and still form n bar branch road, but every branch road has comprised the coil of all numbers, and simultaneously coil becomes the 1/n fractional-type.As winding was a branch road originally, then used n strip conductor and winding circle, was divided into n bar branch road then and picked out lead-in wire.
Other winding construction is drawn analogous conclusions and is got.
Can select different tie lines for use according to the requirement of starting current and starting torque during starting
See Fig. 1, we stipulate that 6 lead-out wires that connect the back winding are: A
1, A
2, B
1, B
2, C
1, C
2, during starting, starting point A, B
1, C
1, 3 join with three phase mains, when behind the electric motor starting and when reaching (or approaching) rated speed value, with A
2, B
2, C
2Incorporate power supply accordingly at 3, this moment, motor entered normal operating condition.
Embodiment:
See Fig. 2, it is with number of poles P=4, counts Q due to groove
1=36 motor is the winding construction of example derivation motor.
1. make Q
1=36, the electromagnetic space coil position figure of P=4 (being called for short electromagnetic space figure).As Fig. 2 a, choose electromagnetism band=40 ° according to table 1, because of groove square α=20 ° so per two coils are formed coil groups, as symbol
Institute is indicated.
2. give each electromagnetism band or coil groups with each phase △ shape part and Y shape part attribute, then every continuous two coil groups belong to △ shape partly (but not homophase), the 3rd coil groups belongs to Y shape part, obviously, this moment, △ shape partly accounted for 2/3rds of full winding, and Y shape part only accounts for 1/3rd.
3. each phase △ shape part and the partly affiliated coil groups of Y shape are linked up respectively.But the coil sections group needs reversal connection, so that be in opposite electromagnetic space position, as 11-12 with the 29-30 reversal connection becomes 11-12 in the past and 29-30 promptly is, the rest may be inferred by analogy for it.See Fig. 2 b, as we know from the figure, constitute △ shape three phase windings partly and three phase windings of Y shape part just, promptly obtain Q
1=36 electromagnetic space four utmost point winding constructions.△ shape 120 ° of phase places of mutual deviation each other partly and between three phase windings of Y shape part itself, △ shape phase winding and Y shape phase winding be 30 ° of phase places of mutual deviation then.The coil distribution of phase winding final structure is △: 242; Y:22.
According to above-mentioned, we adopt single △,
The series connection form of Y, the three phase winding overall construction drawings that obtain this winding are shown in Fig. 2 (c).1～36 number such as coil such as digitized representation such as grade wherein, the numeral that parantheses is other
Illustrate that this part coil is
Type.The arrow direction is represented the forward of coil, promptly walks the direction of terminad from the head end of coil.
On the basis of 60 ° of facies tract winding computational methods of tradition, calculate the empty winding distribution ratio of magnetic by " pro rate " principle.As above-mentioned winding, the coil distribution of final structure is △: 242; Y:22.Corresponding, the magnetic potential vector of two parts distributes as Fig. 2 (d
1,2) shown in.
So the breadth coefficient of this winding is:
As for the breadth coefficient of full winding (comprising fundamental magnetic potential and harmonic magnetic potential), need treat that then △ shape and the two-part coil turn of Y shape are determined after, be calculated as follows:
When m=0, get the breadth coefficient table (1) of winding fundamental magnetic potential
| Number of poles | Number of stator slots | Electromagnetism bandwidth (electrical degree) |
| ????2 | ????24 | ????30° |
| ????2 | ????30 | ????24°；24°+36° |
| ????2 | ????36 | ????20°；30° |
| ????4 | ????36 | ????40° |
| ????4 | ????48 | ????30° |
| ????4 | ????60 | ????24°；24°+36° |
| ????4 | ????72 | ????20°；30° |
| ????6 | ????36 | ????30° |
| ????6 | ????54 | ????40° |
| ????6 | ????72 | ????30° |
| ????6 | ????90 | ????24°；24°+36° |
| ????8 | ????48 | ????30° |
| ????8 | ????72 | ????40° |
| ????8 | ????96 | ????30° |
| ????8 | ????120 | ????24°；24°+36° |
Claims (8)
1. the empty three phase alternating current motor of a magnetic, it is characterized in that: (a) with the bind mode of three phase windings of existing three phase alternating current motor, the mixing that is improved to many △ shape and many Y shape by original single △ shape or Y shape connects; (b) elementary cell---the width that coil groups took up space of formation winding, not 60 facies tracts of fixing again, a but electrical degree of selecting according to motor pole number and number of stator slots, or the covert representation of the winding that is equal to it.
2. the starting tie line of the empty three phase alternating current motor of magnetic is characterized in that the connection of three phase windings is the series circuit that comprises many △ shape and many Y shape of non-integer type, single type, and coil is a fractional-type
3. according to claim 1,2 described three phase alternating current motors and starting tie line thereof, it is characterized in that: when three phase windings are the mixing series connection of single △ shape and two Y shapes, its structure is, the △ shape that three-phase △ winding partly is connected into occupy the winding center, three-phase Y winding two and branch road partly is serially connected on three angle points of △ shape accordingly, the lead-out wire of one of them branch road for starting end line, Y winding coil partly is
Type; When three phase windings are the mixing series connection of 3 △ shapes and 3Y shape, its structure is that three and the △ shape of branch road that three-phase △ winding partly is coupled to occupy the winding center, the Y winding part of three-phase three and branch road is serially connected on the angle point of three △ shapes accordingly, and coil all is
Type; When three phase windings are single △ shape and 1
When the mixing of shape was connected, its structure was identical with the mixing series connection of single △ shape and two Y shapes, but in three-phase Y winding part
Coil number or number of turn place with a lead short circuit, the coil of Y winding part are
Type.
4. according to claim 1,2 described three phase alternating current motors and starting tie line thereof, it is characterized in that, when three phase windings are the cascaded structure of 3 △ shapes and 3Y shape, two corresponding branch roads among each phase 3Y are drawn an end line again with a lead short circuit, wherein the lead-in wire of single branch road is the starting end line, and the lead-out wire of last full winding still is 6.
5. the starting tie line of three phase alternating current motor according to claim 2, it is characterized in that, when the integer type coil windings was n bar branch road originally, then coil is changed the coiled 1/n branch several times number of turn, and the coil of the 1/n times of number of turn of all contrary signs in the winding connected mutually and still form n bar branch road, but every branch road has comprised the coil of all numbers, coil becomes the 1/n fractional-type simultaneously, as winding was a branch road originally, then use n strip conductor parallel wound coil, be divided into n bar branch road then and pick out lead-in wire.
6. according to the starting tie line of the described three phase alternating current motor of claim 2, it is characterized in that every phase Y winding partly has two leading-out end line, electric motor starting is right, three startings of three-phase end line (A
1, B
1, C
1) the access three phase mains; When motor speed during, be about to three-phase three terminal wire (A in addition near rated value
2, B
2, C
2) incorporate power supply accordingly into.
7. three phase alternating current motor according to claim 1, it is characterized in that, the width of electrical degree that coil groups takes up space is according to the number of poles of motor and number of stator slots and selected, all selects 30 ° as 2 utmost points, 24 grooves, 4 utmost points, 48 grooves, 6 utmost points, 36 grooves; 4 utmost points, 36 grooves, 6 utmost points, 54 grooves, 8 utmost points, 72 grooves all select 40 °.
8. three phase alternating current motor according to claim 1 is characterized in that the width of electrical degree that coil groups takes up space is single, as 20 °, 30 °, 40 °; Or compound, all optional 24 °+36 ° as 2 utmost points, 30 grooves, 4 utmost points, 60 grooves and 6 utmost points, 90 grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88218352 CN2048253U (en) | 1988-09-17 | 1988-09-17 | Three-phase a.c. generator and starting binding-line thereof by magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88218352 CN2048253U (en) | 1988-09-17 | 1988-09-17 | Three-phase a.c. generator and starting binding-line thereof by magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2048253U true CN2048253U (en) | 1989-11-22 |
Family
ID=4850790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88218352 Withdrawn CN2048253U (en) | 1988-09-17 | 1988-09-17 | Three-phase a.c. generator and starting binding-line thereof by magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2048253U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230209A (en) * | 2016-09-22 | 2016-12-14 | 杭州电子科技大学 | A kind of brushless, permanently excited direct current motor system of low Vibration Torque |
| CN107086742A (en) * | 2017-05-11 | 2017-08-22 | 上海电机系统节能工程技术研究中心有限公司 | A kind of design and calculation method of individual layer concentric type unequal-turn winding |
| WO2024016765A1 (en) * | 2022-07-20 | 2024-01-25 | 格至控智能动力科技（上海）有限公司 | 6-pole, 54-slot flat copper wire motor winding structure having two balanced branches |
-
1988
- 1988-09-17 CN CN 88218352 patent/CN2048253U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230209A (en) * | 2016-09-22 | 2016-12-14 | 杭州电子科技大学 | A kind of brushless, permanently excited direct current motor system of low Vibration Torque |
| CN107086742A (en) * | 2017-05-11 | 2017-08-22 | 上海电机系统节能工程技术研究中心有限公司 | A kind of design and calculation method of individual layer concentric type unequal-turn winding |
| WO2024016765A1 (en) * | 2022-07-20 | 2024-01-25 | 格至控智能动力科技（上海）有限公司 | 6-pole, 54-slot flat copper wire motor winding structure having two balanced branches |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1767319B (en) | Rotating electrical machine and manufacturing method thereof | |
| CN107070150A (en) | A kind of concentratred winding direct current biasing type hybrid excitation permanent magnet motor | |
| CN101039057A (en) | A. C. brushless double-fed motor | |
| CN108539943A (en) | Permanent magnet synchronous motor and compressor | |
| CN103001365A (en) | Double-layer fractional-slot winding structure of permanent-magnet synchronous motor | |
| CN1106584A (en) | Generator having new structure | |
| CN208299658U (en) | Permanent magnet synchronous motor and compressor | |
| Chen et al. | Investigation of a new AC electrical machine winding | |
| CN110014846A (en) | A kind of rail traffic trailer system based on permanent magnet flux switching straight line motor | |
| CN109586429A (en) | Based on every tooth winding and equal stator tooths away from fault tolerant permanent magnet machine | |
| CN105743257A (en) | Magnetic flux switching brushless motor adopting single-layer stacked winding | |
| CN2048253U (en) | Three-phase a.c. generator and starting binding-line thereof by magnet | |
| CN107394933A (en) | A kind of harmonic starting type Wound brushless double-feeding motor | |
| WO2020060447A1 (en) | Electrical machine | |
| CN2591843Y (en) | Brushless double-feed motor | |
| CN111064300A (en) | 24-slot 10-pole three-phase motor winding structure and electric vehicle | |
| CN1215629C (en) | Electrical machine with large number of poles | |
| CN110829660A (en) | Motor stator winding, method and motor | |
| CN2199631Y (en) | Electric generator with new structure | |
| CN109599974A (en) | A kind of Three-phase Single-layer Windings motor that span is 2 | |
| CN109327095B (en) | A kind of mode of connection of multiplication of voltage simplex winding single speed threephase asynchronous | |
| CN213461273U (en) | Band winding structure for integer slot motor | |
| CN2599855Y (en) | Winding type single sleeve iron core brushless double fed motor | |
| CN211579730U (en) | 24-slot 10-pole three-phase motor winding structure and electric vehicle | |
| CN2183040Y (en) | Energy saving three-phase asynchronous motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| 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 |