CN110492647A - A kind of suppressing method of air gap winding parallel branch circulation - Google Patents
A kind of suppressing method of air gap winding parallel branch circulation Download PDFInfo
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- CN110492647A CN110492647A CN201810455895.6A CN201810455895A CN110492647A CN 110492647 A CN110492647 A CN 110492647A CN 201810455895 A CN201810455895 A CN 201810455895A CN 110492647 A CN110492647 A CN 110492647A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/47—Air-gap windings, i.e. iron-free windings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
Abstract
The present invention relates to a kind of suppressing methods of air gap winding parallel branch circulation, the winding is formed by the ectonexine at least double winding nesting of single cord coiling, pass through the different structure type of the different bind modes and ectonexine winding of ectonexine winding, ensure that nested ectonexine winding is identical or close with the phase of phase back-emf, and it is equal or close with the amplitude of phase back-emf, guarantee the ectonexine nesting winding relationship all the same or close with the resistance and inductance of phase simultaneously, same phase winding parallel connection with These characteristics is coupled, three-phase windings select △ Y type to be coupled according to practical application.Compared with prior art, the circulation for even being eliminated parallel branch can be effectively reduced in the present invention, and then reduces the circulation loss of winding, reduce empty load of motor, load loss, improve electric efficiency, reducing motor temperature rise, and be suitble to the application of drag cup high-speed motor.
Description
Technical field
The present invention relates to machine windings, more particularly, to a kind of suppressing method of air gap winding parallel branch circulation.
Background technique
For slotless magneto, motor main parts size includes stator core, stator winding, rotor magnetic steel and turns
Axis, wherein winding is the core component of slotless magneto.
Traditional hollow-cup motor (such as US.4,5543,507) is since winding directly exposes to the open air in air-gap field, in high speed
Very big eddy-current loss can be generated in the magnetic field of rotation, needed when designing drag cup winding thus using thinner copper wire
Coiling, be based on this demand, in order to make full use of the rotor space of motor, need using multiply and around scheme coiling
Coil, if but traditional lap winding scheme using multiply scheme coiling, and around coil between can generate a phase difference,
If the phase difference can cause internal circulation by two coils from parallel connection of coils, then cause to be lost；
Patent CN200810065047.0 proposes to twist into helical form using multiply thin insulated wire, be conducive to different conductor because
Phase difference and cause circulation increase copper loss, but, due to air gap lap winding in the production process need flatten and edge rolling, it is more in this way
Stock helical form winding easily causes winding inter-turn to damage because of manufacturing process.
Patent US20090315427, US20070103025 and CN200610136515.X are solved with one heart to a certain extent
Formula winding reduces vortex and circulation problem in non-gullet motor, but concentric type structure is only suitable only in patent, is not suitable for folded
Winding and crossing group can not solve the vortex and circulation problem of lap winding and crossing group encountered in non-gullet motor.
Patent US20070103025 and CN200610136515.X needed in winding manufacturing process by several windings into
Row assembly and edge rolling, technology difficulty is big, meanwhile, single coil can only turn to diamond structure, be not suitable for hexagon winding construction；
Patent CN201310021865.1 and CN201310188734.2 propose the winding method and different windings of slotless winding
Combination, but the two patents still without solve non-gullet motor high-power, high revolving speed occur because it is alternate simultaneously
The technical issues of connection causes circulation.
Patent CN201710646697.3 proposes a kind of nested winding using high speed hollow-cup motor, which is suitble to fold
Winding, wave winding and Concentrical winding, the patent can reduce the vortex phenomenon of air gap winding, meanwhile, nesting is mentioned in patent
Internal and external cycle reduces the circulation between multi cord by reasonable on line mode by multiply coiling, and between nested Internal and external cycle,
But propose that nested inner-outer coil is alternate because radial magnetic field profile unevenly generates using sub-thread coiling there is no specific in patent
Circulation (such as the circulation that nesting exterior loop phase A1 and interior loop phase A2 parallel connection generate, exterior loop phase B1 and interior loop phase B2 are in parallel
The circulation that the circulation of generation, exterior loop phase C1 and interior loop phase C2 parallel connection generate).
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of air gap winding parallels
The suppressing method of branch circulation.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of suppressing method of air gap winding parallel branch circulation, the winding by single cord coiling ectonexine at least
Double winding nesting forms, by the different structure type of the different bind modes and ectonexine winding of ectonexine winding,
Ensure that nested ectonexine winding is identical or close with the phase of phase back-emf and equal with the amplitude of phase back-emf
Perhaps it approaches while guaranteeing the ectonexine nesting winding relationship all the same or close with the resistance and inductance of phase, have above-mentioned
The same phase winding parallel connection of feature is coupled, and three-phase windings select △ Y type to be coupled according to practical application.
Preferably, when winding is formed by internal layer winding is nested with outer layer winding, the internal layer winding and outer layer winding
It is aligned on spatial position according to the identical leading-out terminal of ectonexine with the center of circle of winding cross-section or the side of smaller position drift angle
Formula is nested, and nested winding forms phase winding according to an opposite polarity outer coil and a concatenated mode of inner coil,
Concatenated outer coil differs 180 ° with inner coil spatial position or close to 180 °, is connected in series in the manner described above, same to phase
Winding forms double winding, and the double winding parallel connection with phase is coupled, and forms other phase windings according to same way, three-phase windings can
To select △ Y type to be coupled according to practical application.
Preferably, when nested sub-thread winding quantity K is more than or equal to 3, K is integer, and nested winding covers winding by sub-thread K
It is mutually nested, it is aligned according to opposite polarity in-phase coil K layers of identical leading-out terminal with the center of circle of winding cross-section when nested, it is embedding
Set winding needs to be formed phase winding according to the concatenated mode of different layers coil, but concatenated coil differs 180 ° in spatial position
Or close to 180 °, be connected in series in the manner described above, double winding can be formed with phase winding, the double winding parallel connection with phase joins
Knot forms other phase windings according to same way, and three-phase windings can select △ Y type to be coupled according to practical application.
Preferably, it is formed when winding covers winding nesting by K, K > 2, and K is even number, according to K layers of in-phase coil when nested
Identical leading-out terminal is aligned with the center of circle of winding cross-section；Nested winding needs to connect according to opposite polarity two different layers coils
Mode form phase winding, but two coil space positions of connecting differ 180 ° or close to 180 °, while two to be connected in series
The sum of number of coil is equal to K+1 (winding according to and around the radially-arranged principle of radical, in sequence primary number), with mutually around
Group forms K set winding, and the K set winding parallel with phase is coupled, and forms other phase windings according to same way, three-phase windings can root
It is coupled according to practical application selection △ Y type.
Preferably, winding is formed by two strands and around coiling, and for two strands of conducting wires according to radial distribution, winding is by six or more
A coil group composition, when winding line, need according to a radially-arranged outer layer conductor and a concatenated mode of inner conductor
Phase winding is formed, but concatenated radial outer conducting wire differs 180 ° with inner conductor spatial position or close to 180 °, according to upper
The mode of stating is connected in series, and forms double winding with phase winding, and the double winding parallel connection with phase is coupled, and forms it according to same way
His phase winding, three-phase windings can select △ Y type to be coupled according to practical application；
And if be K around radical, it is even number that K, which is greater than 2 and K, is needed according to two radially-arranged conducting wires when winding line
Concatenated mode forms phase winding, but two coil space positions of connecting differ 180 ° or close to 180 °, while being connected in series
The sum of number of two conducting wires is equal to K+1, is connected in series in the manner described above, forms K with phase winding and covers winding, but multi cord
And it is made around winding and the K using identical line footpath, coil pitch, coil straightness, winding height and the number of turns, with phase is needed to cover winding
Parallel connection is coupled, and forms other phase windings according to same way, three-phase windings can select △ Y type connection according to practical application
Knot.
Preferably, when winding is formed by internal layer winding is nested with outer layer winding, the internal layer winding and outer layer winding
Nested in such a way that the identical leading-out terminal of ectonexine is aligned on spatial position, nested winding is outer according to opposite polarity one
Layer line circle and a concatenated mode of inner coil form phase winding, and concatenated outer coil is differed with inner coil spatial position
It 0 ° or close to 0 °, is connected in series in the manner described above, double winding can be formed with phase winding, the double winding parallel connection with phase joins
Knot forms other phase windings according to same way, and three-phase windings can select △ Y type to be coupled according to practical application.
Preferably, when nested winding quantity K is more than or equal to 3, K is integer, and nested winding is mutual by sub-thread K set winding
The identical leading-out terminal of nesting, K layer when nested according to in-phase coil is aligned with the center of circle of winding cross-section, and nested winding needs are pressed
Phase winding is formed according to the opposite polarity concatenated mode of different layers coil, but concatenated K set coil differs 0 ° in spatial position
Or close to 0 °, be connected in series in the manner described above, the winding with phase forms double winding, and the double winding parallel connection with phase is coupled,
Other phase windings are formed according to same way, three-phase windings can select △ Y type to be coupled according to practical application.
Preferably, it is formed when winding covers winding nesting by K, K > 2, and K is even number, according to K layers of in-phase coil when nested
Identical leading-out terminal is aligned with the center of circle O of winding cross-section, and nested winding is needed according to opposite polarity two different layers coil string
The mode of connection forms phase winding, but two coil space positions of connecting differ 0 ° or close to 0 °, while two lines being connected in series
The sum of number of circle is equal to K+1 (winding according to and around the radially-arranged principle of radical, in sequence primary number), according to above-mentioned
Mode is connected in series, and forms K with phase winding and covers winding, and the K set winding parallel with phase is coupled, and forms other phases according to same way
Winding, three-phase windings can select △ Y type to be coupled according to practical application.
Preferably, when winding is formed by two strands and around coiling, two strands of conducting wires according to radial distribution, winding by six or
Multiple coil groups composition, when winding line need to be formed according to an outer layer conductor and a concatenated mode of inner conductor phase around
Group, but the coil of concatenated outer layer conductor composition differs 0 ° with the coil space position that inner conductor forms or close to 0 °, presses
It is connected in series according to aforesaid way, forms double winding with phase winding, the double winding parallel connection with phase is coupled, according to same way shape
At other phase windings, three-phase windings can select △ Y type to be coupled according to practical application；
And if be K around radical, it is even number that K, which is greater than 2 and K, is needed when winding line according to two different layer conductors series connection
Mode form phase winding, but two coil space positions of connecting differ 0 ° or close to 0 °, while two conducting wires being connected in series
The sum of number be equal to K+1, be connected in series in the manner described above, form K with phase winding and cover winding, multi cord is simultaneously made around winding
It needs the K set winding parallel using identical line footpath, coil pitch, coil straightness, winding height and the number of turns, with phase to be coupled, presses
Other phase windings are formed according to same way, three-phase windings can select △ Y type to be coupled according to practical application.
Preferably, when winding is formed by internal layer winding is nested with outer layer winding, the internal layer winding and outer layer winding
Nested in such a way that the identical leading-out terminal of ectonexine is aligned on spatial position, nested winding is according to opposite polarity same
Two coils of winding (such as internal layer winding) connect to form phase winding, two coil space position phases of the same windings in series
It poor 180 ° or close to 180 °, is connected in series in the manner described above, outer layer winding and internal layer winding form two sets of phase windings according to upper
The mode of stating is connected in series, and forms double winding with phase winding, and the double winding parallel connection with phase is coupled, and forms it according to same way
His phase winding, three-phase windings can select △ Y type to be coupled according to practical application；
Or nested sub-thread winding quantity K, when being more than or equal to 3, K is integer, and nested winding is mutual by sub-thread K set winding
Nesting is aligned according to K layers of in-phase coil of identical leading-out terminal with the center of circle of winding cross-section when nested, nested winding need according to
Two coils of the opposite polarity same winding (such as internal layer winding) connect to form phase winding, but the same windings in series
Two coil space positions differ 180 ° or close to 180 °, be connected in series in the manner described above, K covers winding K and covers phase winding, together
The K set winding parallel of phase is coupled, and forms other phase windings according to same way, three-phase windings can select △ according to practical application
Or Y type is coupled.
Aspect is made in winding, internal layer sub-thread winding and outer layer sub-thread winding need by adjusting line footpath, the number of turns, coil section
Away from, winding height and coil straight-line segment length mode, realize under same a pair of of pole p-m rotor effect, above-mentioned two sets phases around
The counter electromotive force that group is formed is identical or close in amplitude and phase, and the DC impedance of the double winding and inductance are also identical
Or it is close.
The present invention be not only suitable for each layer line circle be single cord winding the mode of connection, be equally applicable to rope-lay strand or
Multi cord and the mode of connection around winding；
Winding connection mode refers to air gap winding in the present invention, is suitable for lap winding, Concentrical winding and crossing group；
Winding connection in the present invention is suitable for a pair of of pole and multipair pole permanent-magnet rotor motor；
Single-layer Windings are mentioned in the present invention by 6 coils, 12 outlets, are not here the coil for singly referring to the type, it is all
Reduce the circulation of parallel branch among the scope of the present invention according to the winding connection method mentioned in mode of the present invention
The winding connection mode proposed in the present invention can connect on the outside of winding or by FPCB PCB electronics
Plate, all winding connection methods middle through the invention reduce the circulation of parallel branch among the scope of this patent.
Compared with prior art, the invention has the following advantages that
1, the outlet connection method of nested winding can be effectively reduced the circulation for even being eliminated parallel branch, and then reduce
The circulation loss of winding reduces empty load of motor, load loss, improves electric efficiency, reducing motor temperature rise, and being suitble to drag cup
The application of high-speed motor；
2, the outlet connection type of nested winding, can not only reduce the circulation in double winding parallel branch, can also be with
The circulation in more set winding parallel branches is reduced, there is extensive adaptability；
3, aspect is made in winding, can according to the actual application, and Single-layer Windings are needed through line footpath, the number of turns, coil section
Away from, winding height and coil straight-line segment length mode, both can satisfy winding performance, winding thickness can also be improved, improve around
Diversity made of group and qualification rate；
4, the outlet connection type of nested winding can more effectively realize that double winding or more set windings are nested, embedding
The identical leading-out terminal of each layer when set according to in-phase coil is aligned with the center of circle of winding cross-section, even if in-phase coil when nested
There is lesser deviation in the identical leading-out terminal of each layer and the center of circle of winding cross-section, can also reduce or eliminate more set winding parallels
Circulation in branch
5, the outlet connection method of nested winding, widens the voltage class of motor, motor is made to be not only suitable for high-speed cruising,
It is suitble to the high-speed motor of different voltages grade；
6, the outlet connection method of nested winding, is suitble to different types of air gap winding, is not only suitable for lap winding, also fits
Close Concentrical winding and crossing group；
7, multiply and around winding still can according to identical line principle, realize reduce winding circulation loss the advantages of.
Detailed description of the invention
Fig. 1 is the nested structure of winding and the leading-out terminal connection mode schematic diagram of coil；
Fig. 2 is for two strands of conducting wires and around the structure of winding and the leading-out terminal connection mode schematic diagram of coil；
Fig. 3 is that the space bit angle setting of nested coil defines schematic diagram；
Fig. 4 be two strands of conducting wires and around coil space position angle define schematic diagram；
Fig. 5 is the expanded view of single layer air gap lap winding；
Fig. 6 is that coil basic parameter defines schematic diagram；
Fig. 7 is double-layer air gaps winding A phase double winding mode of connection schematic diagram of the present invention；
Fig. 8 is four layers of a set of winding connection of air gap winding A phase of the invention, and the other set winding wire mode of A phase is identical to be shown
It is intended to；
Fig. 9 is four layers of air gap winding A phase double winding wiring of the invention, and the another double winding connection type of A phase is identical to be shown
It is intended to；
Figure 10 be two strands of conducting wires of the invention and around air gap winding A phase double winding mode of connection schematic diagram；
Figure 11 be four strands of conducting wires of the invention and around A phase double winding wiring, the another double winding connection type of A phase is identical
Schematic diagram；
Figure 12 is double-layer air gaps winding A phase double winding mode of connection schematic diagram of the present invention；
Figure 13 is four layers of a set of winding connection of air gap winding A phase of the invention, and the another set of winding connection mode of A phase is identical to be shown
It is intended to；
Figure 14 is four layers of air gap winding A phase double winding wiring of the invention, and the another double winding mode of connection of A phase is identical to be shown
It is intended to；
Figure 15 be two strands of conducting wires of the invention and around air gap winding A phase double winding mode of connection schematic diagram；
Figure 16 is for four strands of conducting wires of the invention and around A phase double winding wiring, the identical signal of another double winding wiring of A phase
Figure；
Figure 17 is traditional two bursts of Split Down winding A phase connection schematic diagrams；
Figure 18 is double-layer air gaps winding A phase double winding mode of connection schematic diagram of the present invention；
Figure 19 is the present invention four layers of air gap winding A four sets of winding connection schematic diagram of phase of invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is a part of the embodiments of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, those of ordinary skill in the art's every other reality obtained without making creative work
Example is applied, all should belong to the scope of protection of the invention.
The present invention proposes that nested ectonexine winding is all made of single cord coiling, passes through the different connection sides of ectonexine winding
Formula (internal layer winding from outer layer windings in series) and the different structure type of ectonexine winding (such as ectonexine winding has difference
Coil pitch, straight line edge lengths, winding height), Fig. 1 provides winding nesting winding construction and winding connection, it is ensured that
(the phase A1 of A phase winding is identical or close as the phase of A2) counter electromotive force, and with opposite with phase for nested ectonexine winding
The amplitude of electromotive force is equal perhaps close while guaranteeing that ectonexine nesting winding is identical or close with the resistance of phase and inductance
Relationship can reduce ectonexine winding that sub-thread coiling is nested because of alternate circulation caused by parallel connection in this way, this is the same as alternate (A phase
Between the phase A1 and A2 of winding) the circulation level that can minimize value or be close to zero；The internal layer that finally, is nested,
Outer layer winding forms a set of winding of motor, which can according to the actual application, carry out the △ of the winding or Y of winding
Type is coupled.
Embodiment 1
Winding is formed by the ectonexine double winding nesting of single cord coiling, and internal layer winding Coil1 is made of six coils,
Six coils are A1X1, B1Y1, C1Z1, A2X2, B2Y2, C2Z2 respectively, wherein spatial distribution position, A1X1 are differed with A2X2
180 °, A1 differs 180 ° with X2, and X1 differs 180 ° with A2；B1Y1 differs 180 ° with B2Y2, and B1 differs 180 ° with Y2, Y1 and B2 phase
Poor 180 °；C1Z1 differs 180 ° with C2Z2, and C1 differs 180 ° with Z2, and Z1 differs 180 ° with C2；Outer layer winding Coil2 is by six lines
Circle composition, six coils are A11X11, B11Y11, C11Z11, A22X22, B22Y22, C22Z22 respectively, wherein spatial distribution
Position, A11X11 differ 180 ° with A22X22, and A11 differs 180 ° with X22, and X11 differs 180 ° with A22；B11Y11 and B22Y22
180 ° of difference, B11 differs 180 ° with Y22, and Y11 differs 180 ° with B22；C11Z11 differs 180 ° with C22Z22, C11 and Z22 phase
Poor 180 °, Z11 differs 180 ° with C22；By internal layer winding Coil1 and outer layer winding Coil2 according to the identical leading-out terminal of ectonexine
The mode of alignment or smaller position drift angle is nested on spatial position, and the whole winding formed in this way is known as nested winding, example
As A1, A11 be aligned with the center of circle O of winding cross-section or the mode of smaller position drift angle carry out winding nesting.
Nested winding needs to be formed phase winding according to an outer coil and a concatenated mode of inner coil, but goes here and there
The outer coil of connection differs 180 ° with inner coil spatial position or close to 180 °, and Fig. 3 provides the space bit of nested lattice coil
Schematic diagram is set, is connected in series in the manner described above, double winding can be formed with phase winding, in same a pair of of pole p-m rotor
Under effect, the counter electromotive force that above-mentioned double winding is formed is identical or close in amplitude and phase, and the double winding
DC impedance and inductance are also identical or close, such double winding is carried out it is in parallel, the circulation in parallel branch be zero or
Circulation value is reduced to minimum；Such as leading-out terminal X1 connect to form phase winding CoilA1 with leading-out terminal A22, then phase winding CoilA1
Two leading-out terminals become A1 and X22, leading-out terminal X11 are connect to form phase winding CoilA2 with leading-out terminal A2, then phase winding
Two leading-out terminals of CoilA2 become A11 and X2, and the mode of connection is as shown in Figure 7；Same a pair of pole p-m rotor turning effort
Under, the phase back-emf EA1 and EA2 that phase winding CoilA1 and CoilA2 are generated is identical or close in amplitude and phase, and
And the direct current resistance value of phase winding CoilA1 and CoilA2 is identical or close with inductance, phase winding CoilA1 and CoilA2 is in parallel
The A phase winding CoilA for forming nested winding, under high-speed rotating a pair of of pole p-m rotor effect, inside A phase winding CoilA
Circulation is zero or circulation value very little；Alternatively, it is also possible to which leading-out terminal A1 to connect to form phase winding CoilA1 with leading-out terminal X22, then
Two leading-out terminals of phase winding CoilA1 become A22 and X1, and leading-out terminal A11 is connect to form phase winding with leading-out terminal X2
CoilA2, then the two of phase winding CoilA2 leading-out terminal becomes A2 and X11；Under same a pair of pole p-m rotor turning effort,
The phase back-emf EA1 and EA2 that phase winding CoilA1 and CoilA2 are generated is identical or close in amplitude and phase, and phase
The direct current resistance value of winding CoilA1 and CoilA2 is identical or close with inductance, and phase winding CoilA1 and CoilA2 parallel connection is formed
The A phase winding CoilA of nested winding, under high-speed rotating a pair of of pole p-m rotor effect, circulation inside A phase winding CoilA
It is zero or circulation value is reduced to minimum value；According to the identical mode of A phase winding, B phase winding and C phase winding can be formed；According to reality
Border application difference, can by A phase winding, B phase winding and C phase winding by △ type be coupled in the way of or Y type bind mode
Form the three-phase windings of nested winding.
When nested sub-thread winding quantity is more than or equal to 3, quantity K, K are integer, and K >=3, nested winding is by sub-thread K
It is mutually nested to cover winding, is aligned according to K layers of in-phase coil of identical leading-out terminal with the center of circle O of winding cross-section when nested, such as
A1, A11, A111 ... carry out winding nesting with the center of circle O of the winding cross-section mode being aligned；Nested winding is needed according to difference
The concatenated mode of layer line circle forms phase winding, but concatenated coil in spatial position differs 180 ° or close to 180 °, according to upper
The mode of stating is connected in series, and can form double winding with phase winding, under same a pair of of pole p-m rotor effect, above-mentioned two sets
The counter electromotive force that winding is formed is identical or close in amplitude and phase, and the DC impedance and inductance of the double winding
It is identical or close, such double winding is carried out in parallel, the circulation in parallel branch is zero or circulation value is reduced to minimum, four
The mode of connection of layer winding is as shown in figure 8, Fig. 8 provides the connection mode of a set of winding of A phase winding, other A phase winding other one
Cover winding can wiring in the same fashion.
Winding by K set winding nesting form, K > 2, and K be even number, K set coil be respectively Coil1, Coil2,
Coil3 ... CoilK is aligned according to K layers of in-phase coil of identical leading-out terminal with the center of circle O of winding cross-section when nested, such as
A1, A11, A111 ... carry out winding nesting with the center of circle O of the winding cross-section mode being aligned；Nested winding is needed according to two
The concatenated mode of different layers coil forms phase winding, but two coil space positions of connecting differ 180 ° or close to 180 °, together
The sum of number of concatenated two coils of phase is equal to K+1, such as Coil1 connects with CoilK, and Coil2 connects with CoilK-1；
It is connected in series in the manner described above, K set winding can be formed with phase winding, under same a pair of of pole p-m rotor effect, on
It is identical or close in amplitude and phase to state the counter electromotive force that K set winding is formed, and the K covers the DC impedance and electricity of winding
Feel also identical or close, such K set winding is subjected to parallel connection, the circulation in parallel branch is zero or circulation value is reduced to most
It is small, the mode of connection of four layers of winding as shown in figure 9, Fig. 9 provides the connection mode of A phase winding double winding, A phase winding other two
Set set winding can wiring in the same fashion.
Aspect is made in winding in the nested winding formed in the manner described above, and each layer sub-thread winding can use identical
Line footpath can also use different line footpaths；Each layer sub-thread winding can use identical coil pitch, can also use different
Coil pitch；Each layer sub-thread winding can use identical coil straightway, can also use different straight lines；Each layer sub-thread around
The winding height of group can be identical, can also be with winding height difference；Each layer sub-thread winding can use identical the number of turns, can also be with
Using different the number of turns, Fig. 5 is single layer air gap developed winding diagram, and Fig. 6 is coil basic parameter explanation；But single layer sub-thread around
Group is needed using identical line footpath, identical coil pitch, identical coil straightway and identical the number of turns, and same phase winding
It needs to be formed according to the concatenated mode of different layers coil, but concatenated each layer line cycle space position differs 180 ° or close
180°。
Above-mentioned nesting winding is in winding aspect of performance, the advantages of there is reduction winding vortex, while not introducing winding circulation,
Aspect, which is made, in winding has biggish flexibility, and each winding can be understood to mutually nested, the Ke Yigen that be independent winding
It needs according to practical application, by different layers around the suitable line footpath of group selection, coil pitch, straightway, winding height and the number of turns, both may be used
To meet motor performance, winding thickness also can control, while improving qualification rate made of winding.
In addition, Fig. 2 is two strands of conducting wires and around winding construction and connection mode, Fig. 4 be two strands of conducting wires and around coil it is empty
Between position angle define.
Winding is formed by two strands of strands and around coiling, two strands of conducting wires according to radial distribution, winding by six (or) it is multiple
Coil group composition needs when winding line to form phase winding according to an outer layer conductor and a concatenated mode of inner conductor,
But concatenated outer layer lead loop with inner conductor coil space position differs 180 ° or close to 180 °, and if around radical being
It is even number that K, K, which are greater than 2 and K, needs when winding line to form phase winding according to two different concatenated modes of layer conductor, according to upper
The mode of stating is connected in series, and can form K set winding with phase winding, but two coil space positions of connecting differ 180 ° or close
180 °, at the same the sum of number of two conducting wires being connected in series be equal to K+1, Figure 10 be two strands of conducting wires and around air gap winding A phase two
Cover winding connection, Figure 11 is four strands of conducting wires and around winding, wherein the A phase double winding mode of connection, other two sets of A phase around
Group connects in the same fashion.
Embodiment 2
Winding is formed by the ectonexine double winding nesting of single cord coiling, and internal layer winding Coil1 is made of six coils,
Six coils are A1X1, B1Y1, C1Z1, A2X2, B2Y2, C2Z2 respectively, wherein spatial distribution position, A1X1 are differed with A2X2
180 °, A1 differs 180 ° with X2, and X1 differs 180 ° with A2；B1Y1 differs 180 ° with B2Y2, and B1 differs 180 ° with Y2, Y1 and B2 phase
Poor 180 °；C1Z1 differs 180 ° with C2Z2, and C1 differs 180 ° with Z2, and Z1 differs 180 ° with C2；Outer layer winding Coil2 is by six lines
Circle composition, six coils are A11X11, B11Y11, C11Z11, A22X22, B22Y22, C22Z22 respectively, wherein spatial distribution
Position, A11X11 differ 180 ° with A22X22, and A11 differs 180 ° with X22, and X11 differs 180 ° with A22；B11Y11 and B22Y22
180 ° of difference, B11 differs 180 ° with Y22, and Y11 differs 180 ° with B22；C11Z11 differs 180 ° with C22Z22, C11 and Z22 phase
Poor 180 °, Z11 differs 180 ° with C22；By internal layer winding Coil1 and outer layer winding Coil2 according to the identical leading-out terminal of ectonexine
The alignment thereof nesting on spatial position, the referred to as nested winding of the whole winding formed in this way, such as A1, A11 and winding are transversal
The mode of the center of circle O alignment in face carries out winding nesting.
Nested winding needs to be formed phase winding according to an outer coil and a concatenated mode of inner coil, but goes here and there
The outer coil of connection differs 0 ° with inner coil spatial position or close to 0 °, is connected in series in the manner described above, can with phase winding
To form double winding, this two sets of phase windings differ 180 ° on spatial position or close to 180 °, same a pair of of pole forever
Under magnet rotor effect, the counter electromotive force that above-mentioned double winding is formed is identical or close in amplitude and phase, and this two sets
The DC impedance and inductance of winding are also identical or close, and such double winding is carried out to circulation in parallel, in parallel branch
It is zero or circulation value is reduced to minimum；Such as leading-out terminal X1 is connect to form phase winding CoilA1 with leading-out terminal A11, then phase winding
Two leading-out terminals of CoilA1 become A1 and X11, leading-out terminal X22 are connect to form phase winding CoilA2 with leading-out terminal A2, then phase
Two leading-out terminals of winding CoilA2 become A22 and X2, and the mode of connection is as shown in figure 12；Same a pair of pole p-m rotor rotation
Under effect, the phase back-emf EA1 and EA2 that phase winding CoilA1 and CoilA2 are generated is identical in amplitude and phase or connects
Closely, and the direct current resistance value of phase winding CoilA1 and CoilA2 is identical or close with inductance, by phase winding CoilA1 and
CoilA2 parallel connection forms the A phase winding CoilA of nested winding, under high-speed rotating a pair of of pole p-m rotor effect, A phase winding
Circulation is zero or circulation value very little inside CoilA；Alternatively, it is also possible to which leading-out terminal A1 is connect to form phase winding with leading-out terminal X11
CoilA1, then the two of phase winding CoilA1 leading-out terminal becomes A11 and X1, and leading-out terminal A22 is connect to form phase with leading-out terminal X2
Winding CoilA2, then the two of phase winding CoilA2 leading-out terminal becomes A2 and X22；Same a pair of pole p-m rotor turning effort
Under, the phase back-emf EA1 and EA2 that phase winding CoilA1 and CoilA2 are generated is identical or close in amplitude and phase, and
And the direct current resistance value of phase winding CoilA1 and CoilA2 is identical or close with inductance, phase winding CoilA1 and CoilA2 is in parallel
The A phase winding CoilA for forming nested winding, under high-speed rotating a pair of of pole p-m rotor effect, inside A phase winding CoilA
Circulation is zero or circulation value is reduced to minimum value；According to the identical mode of A phase winding, B phase winding and C phase winding can be formed；Root
It, can be by A phase winding, B phase winding and C phase winding in such a way that △ type is coupled or Y type is coupled according to the difference of practical application
Mode forms the three-phase windings of nested winding.
When nested winding quantity is more than or equal to 3, quantity K, K are integer, K >=3, nested winding by sub-thread K cover around
Group is mutually nested, is aligned according to the identical leading-out terminal of K layer of in-phase coil with the center of circle O of winding cross-section when nested, such as A1,
A11, A111 ... carry out winding nesting with the center of circle O of the winding cross-section mode being aligned, and nested winding is needed according to different layers
The concatenated mode of coil forms phase winding, but concatenated K covers coil in 0 ° of spatial position difference or close to 0 °, according to above-mentioned side
Formula is connected in series, and the winding with phase can form double winding, and the mode of connection of four layers of winding is as shown in figure 13, and Figure 13 provides A
The connection mode of a set of winding of phase winding, in addition A phase winding other set winding can wiring in the same fashion.
Winding by K set winding nesting form, K > 2, and K be even number, K set coil be respectively Coil1, Coil2,
Coil3 ... CoilK is aligned according to K layers of in-phase coil of identical leading-out terminal with the center of circle O of winding cross-section when nested, such as
A1, A11, A111 ... carry out winding nesting with the center of circle O of the winding cross-section mode being aligned；Nested winding is needed according to two
The concatenated mode of different layers coil forms phase winding, but two coil space positions of connecting differ 0 ° or close to 0 °, same to phase
The sum of number of concatenated two coils is equal to K+1, such as Coil1 connects with CoilK, and Coil2 connects with CoilK-1；According to
Aforesaid way is connected in series, and can form K set winding with phase winding, under same a pair of of pole p-m rotor effect, above-mentioned K set
The counter electromotive force that winding is formed is identical or close in amplitude and phase, and the DC impedance and inductance of K set winding
It is identical or close, such K set winding is carried out in parallel, the circulation in parallel branch is zero or circulation value is reduced to minimum, four
The mode of connection of layer winding is as shown in figure 14, and Figure 14 provides the connection mode of A phase winding double winding, and in addition A phase winding is in addition
Double winding can wiring in the same fashion.
Aspect is made in winding in the nested winding formed in the manner described above, and each layer sub-thread winding can use identical
Line footpath can also use different line footpaths；Each layer sub-thread winding can use identical coil pitch, can also use different
Coil pitch；Each layer sub-thread winding can use identical coil straightway, can also use different straight lines；Each layer sub-thread around
The winding height of group can be identical, can also be with winding height difference；Each layer sub-thread winding can use identical the number of turns, can also be with
Using different the number of turns；But the sub-thread winding of single layer is needed using identical line footpath, identical coil pitch, identical line
Straightway and identical the number of turns are enclosed, and is needed with phase winding according to an outer coil and a concatenated mode of inner coil
It is formed, but concatenated outer coil differs 0 ° with inner coil spatial position or close to 0 °.
Above-mentioned nesting winding is in winding aspect of performance, the advantages of there is reduction winding vortex, while not introducing winding circulation,
Aspect, which is made, in winding has biggish flexibility, and winding being understood to, to be independent winding mutually nested, can be according to reality
Border application needs, and by every layer around the suitable line footpath of group selection, coil pitch, straightway, winding height and the number of turns, both can satisfy
Motor performance also can control winding thickness, improve qualification rate made of winding.
In addition,
Winding is formed by two strands of strands and around coiling, two strands of conducting wires according to radial distribution, winding by six (or) it is multiple
Coil group composition needs when winding line to form phase winding according to an outer layer conductor and a concatenated mode of inner conductor,
But concatenated outer layer lead loop with inner conductor coil space position differs 0 ° or close to 0 °, and if being K, K around radical
Greater than 2 and K is even number, needs when winding line to form phase winding according to two different concatenated modes of layer conductor, but connects
Two coil space positions differ 0 ° or close to 0 °, while the sum of number of two conducting wires being connected in series is equal to K+1, according to above-mentioned
Mode is connected in series, with phase winding can be formed K set winding, Figure 15 be two strands of conducting wires and around air gap winding A phase double winding
Connection type, Figure 16 are four strands of conducting wires and around winding, wherein A phase double winding wiring diagram, and the other double winding of A phase can be by
Connected according to identical mode, Figure 17 is two strands of tradition and around the A phase double winding connection type of conducting wire, and traditional multiply and around
Conducting wire is connected still according to identical mode, and which can not solve the circulation problem of parallel branch.
Embodiment 3
Winding is formed by the ectonexine double winding nesting of single cord coiling, and internal layer winding Coil1 is made of six coils,
Six coils are A1X1, B1Y1, C1Z1, A2X2, B2Y2, C2Z2 respectively, wherein spatial distribution position, A1X1 are differed with A2X2
180 °, A1 differs 180 ° with X2, and X1 differs 180 ° with A2；B1Y1 differs 180 ° with B2Y2, and B1 differs 180 ° with Y2, Y1 and B2 phase
Poor 180 °；C1Z1 differs 180 ° with C2Z2, and C1 differs 180 ° with Z2, and Z1 differs 180 ° with C2；Outer layer winding Coil2 is by six lines
Circle composition, six coils are A11X11, B11Y11, C11Z11, A22X22, B22Y22, C22Z22 respectively, wherein spatial distribution
Position, A11X11 differ 180 ° with A22X22, and A11 differs 180 ° with X22, and X11 differs 180 ° with A22；B11Y11 and B22Y22
180 ° of difference, B11 differs 180 ° with Y22, and Y11 differs 180 ° with B22；C11Z11 differs 180 ° with C22Z22, C11 and Z22 phase
Poor 180 °, Z11 differs 180 ° with C22；By internal layer winding Coil1 and outer layer winding Coil2 according to the identical leading-out terminal of ectonexine
The alignment thereof nesting on spatial position, the referred to as nested winding of the whole winding formed in this way, such as A1, A11 and winding are transversal
The mode of the center of circle O alignment in face carries out winding nesting.
Nested winding needs connect to form phase winding according to two coils of the same winding (such as internal layer winding), still
Two coil space positions of the same windings in series differ 180 ° or close to 180 °, are connected in series in the manner described above, outer layer
Winding and internal layer winding respectively form a set of phase winding, this two sets of phase windings differ 0 ° on spatial position or close to 0 °；According to
Aspect is made in winding in the nested winding that aforesaid way is formed, internal layer sub-thread winding and outer layer sub-thread winding need by adjusting
Line footpath, the number of turns, coil pitch, winding height and coil straight-line segment length mode are realized and are made in same a pair of of pole p-m rotor
Under, the counter electromotive force that above-mentioned two sets of phase windings are formed is identical or close in amplitude and phase, and the double winding
DC impedance and inductance are also identical or close, such double winding is carried out it is in parallel, the circulation in parallel branch be zero or
Circulation value is reduced to minimum；Such as leading-out terminal X1 connect to form phase winding CoilA1 with leading-out terminal A2, then phase winding CoilA1
Two leading-out terminals become A1 and X2, leading-out terminal X11 are connect to form phase winding CoilA2 with leading-out terminal A22, then phase winding
Two leading-out terminals of CoilA2 become A11 and X22, and the mode of connection is as shown in figure 18；Same a pair of pole p-m rotor rotation is made
Under, the phase back-emf EA1 and EA2 that phase winding CoilA1 and CoilA2 are generated is identical or close in amplitude and phase,
And the direct current resistance value of phase winding CoilA1 and CoilA2 is identical or close with inductance, simultaneously by phase winding CoilA1 and CoilA2
Connection forms the A phase winding CoilA of nested winding, under high-speed rotating a pair of of pole p-m rotor effect, in A phase winding CoilA
Portion's circulation is zero or circulation value very little；Alternatively, it is also possible to which leading-out terminal A1 to connect to form phase winding CoilA1 with leading-out terminal X2, then
Two leading-out terminals of phase winding CoilA1 become A2 and X1, and leading-out terminal A11 is connect to form phase winding with leading-out terminal X22
CoilA2, then the two of phase winding CoilA2 leading-out terminal becomes A22 and X11；Under same a pair of pole p-m rotor turning effort,
The phase back-emf EA1 and EA2 that phase winding CoilA1 and CoilA2 are generated is identical or close in amplitude and phase, and phase
The direct current resistance value of winding CoilA1 and CoilA2 is identical or close with inductance, and phase winding CoilA1 and CoilA2 parallel connection is formed
The A phase winding CoilA of nested winding, under high-speed rotating a pair of of pole p-m rotor effect, circulation inside A phase winding CoilA
It is zero or circulation value is reduced to minimum value；According to the identical mode of A phase winding, B phase winding and C phase winding can be formed；According to reality
Border application difference, can by A phase winding, B phase winding and C phase winding by △ type be coupled in the way of or Y type bind mode
Form the three-phase windings of nested winding.
When nested sub-thread winding quantity is more than or equal to 3, quantity K, K are integer, and K >=3, nested winding is by sub-thread K
It is mutually nested to cover winding, is aligned according to K layers of in-phase coil of identical leading-out terminal with the center of circle O of winding cross-section when nested, such as
A1, A11, A111 ... carry out winding nesting with the center of circle O of the winding cross-section mode being aligned, and nested winding is needed according to same
Two coils of a winding (such as internal layer winding) connect to form phase winding, but two coil spaces of the same windings in series
Position differs 180 ° or close to 180 °, is connected in series in the manner described above, and K covers winding and forms K set phase winding, and K set phase winding exists
0 ° is differed on spatial position or close to 0 °；Aspect is made in winding in the nested winding formed in the manner described above, and K covers sub-thread
Winding needs to realize by line footpath, the number of turns, coil pitch, winding height and coil straight-line segment length mode in same a pair
Under the effect of pole p-m rotor, the counter electromotive force that above-mentioned K set phase winding is formed is identical or close in amplitude and phase, and K
DC impedance and the inductance for covering winding are also identical or close, and such K set winding is carried out circulation in parallel, in parallel branch
It is zero or circulation value is reduced to minimum, the mode of connection of four layers of winding is as shown in figure 19, and Figure 19 provides the company of four sets of windings of A phase winding
Line mode.
Above-mentioned nesting winding is in winding aspect of performance, the advantages of there is reduction winding vortex, while not introducing winding circulation,
But be made aspect in winding, mutually nested winding need by adjusting line footpath, coil pitch, straightway, winding height and
One or more in the number of turns parameter realize under same a pair of of pole p-m rotor effect, what above-mentioned each phase winding was formed
The counter electromotive force identical perhaps close and double winding DC impedance and inductance in amplitude and phase is also identical or connect
Closely.
Nesting coil space position angle defined in the application explanation is 0 ° or 180 ° and multiply radial direction parallel wound coil
Space bit angle setting be 0 ° perhaps 0 ° or 180 ° of 180 ° of angles here be entirely theoretic 0 ° or 180 °, practical line
Cycle space position angle can have lesser deviation, and this deviation is still in the application protection scope；
Only illustrate when the application illustrates two layers or four layers of winding nesting, two strands of conducting wires and around or four strands of conducting wires and around all
The circulation for reducing air gap winding parallel branch according to technical thought in the application, belongs in the application protection scope；
The leading-out terminal mode of connection for the air gap winding mentioned in the application only provides wiring thinking, (outer by other means
Portion's wiring or PCB circuit board) line is in the application protection scope；
The winding connection mode mentioned in the application is suitable for lap winding (the application illustrates by taking lap winding as an example), is also suitble to
Concentrical winding and crossing group, the outlet definition of Concentrical winding, crossing group and lap winding, coil parameter define it is different,
But the connection mode for reducing parallel connection Zhi Huanliu is identical, Concentrical winding, crossing group and lap winding are in the application protection scope
It is interior.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of suppressing method of air gap winding parallel branch circulation, which is characterized in that the winding is by single cord coiling
Ectonexine at least double winding nesting forms, different by the different bind modes and ectonexine winding of ectonexine winding
Structure type, it is ensured that nested ectonexine winding is identical or close with the phase of phase back-emf, and same phase back-emf
Amplitude it is equal perhaps close while guaranteeing the ectonexine nesting winding pass all the same or close with the resistance and inductance of phase
System.
2. the method according to claim 1, wherein when winding is formed by internal layer winding is nested with outer layer winding
When, the internal layer winding and outer layer winding are according to the center of circle of the identical leading-out terminal of ectonexine and winding cross-section in spatial position
The mode of upper alignment or smaller position drift angle is nested, and nested winding is according to an opposite polarity outer coil and an internal layer
The concatenated mode of coil forms phase winding, and concatenated outer coil differs 180 ° with inner coil spatial position or close to 180 °,
It is connected in series in the manner described above, forms double winding with phase winding.
3. the method according to claim 1, wherein K is when nested sub-thread winding quantity K is more than or equal to 3
Integer, nested winding is mutually nested by sub-thread K set winding, according to opposite polarity in-phase coil K layers of identical outlet when nested
End is aligned with the center of circle of winding cross-section, and nested winding needs to form phase winding according to the concatenated mode of different layers coil, still
Concatenated coil differs 180 ° in spatial position or close to 180 °, is connected in series, can be formed in the manner described above with phase winding
Double winding,.
4. the method according to claim 1, wherein being formed when winding covers winding nesting by K, K > 2, and K is even
Number, is aligned according to K layers of in-phase coil of identical leading-out terminal with the center of circle of winding cross-section when nested；Nested winding is needed according to pole
Property opposite two concatenated modes of different layers coil form phase winding, but two coil space positions of connecting differ 180 ° or
Close to 180 °, while the sum of number of two coils being connected in series is equal to K+1, forms K with phase winding and covers winding.
5. according to the method any in claim 2-4, which is characterized in that winding is by two strands and forms around coiling, two
According to radial distribution, winding is made of stock conducting wire six or multiple coil groups, is needed according to radially-arranged when winding line
One outer layer conductor and a concatenated mode of inner conductor form phase winding, but concatenated radial outer conducting wire is led with internal layer
Space of lines position differs 180 ° or close to 180 °；
And if be K around radical, it is even number that K, which is greater than 2 and K, needs when winding line to connect according to two radially-arranged conducting wires
Mode form phase winding, but two coil space positions of connecting differ 180 ° or close to 180 °, while two to be connected in series
The sum of number of conducting wire be equal to K+1, be connected in series in the manner described above, with phase winding formed K cover winding, but multi cord and around
Winding, which is made, to be needed using identical line footpath, coil pitch, coil straightness, winding height and the number of turns.
6. the method according to claim 1, wherein when winding is formed by internal layer winding is nested with outer layer winding
When, the internal layer winding is nested in such a way that the identical leading-out terminal of ectonexine is aligned on spatial position with outer layer winding,
Nested winding forms phase winding according to an opposite polarity outer coil and a concatenated mode of inner coil, concatenated outer
Layer line circle differs 0 ° with inner coil spatial position or close to 0 °, is connected in series, can be formed in the manner described above with phase winding
Double winding.
7. the method according to claim 1, wherein K is whole when nested winding quantity K is more than or equal to 3
Number, nested winding is mutually nested by sub-thread K set winding, horizontal according to the identical leading-out terminal of the K layer of in-phase coil and winding when nested
The center of circle in section is aligned, and nested winding needs to form phase winding according to the opposite polarity concatenated mode of different layers coil, still
Concatenated K set coil differs 0 ° in spatial position or close to 0 °, is connected in series in the manner described above, and the winding with phase forms two sets
Winding.
8. the method according to claim 1, wherein being formed when winding covers winding nesting by K, K > 2, and K is even
Number, is aligned according to K layer of in-phase coil of identical leading-out terminal with the center of circle O of winding cross-section when nested, nested winding needs according to
The concatenated mode of opposite polarity two different layers coils forms phase winding, but two coil space positions of connecting differ 0 ° or
Close to 0 °, while the sum of number of two coils being connected in series is equal to K+1, is connected in series in the manner described above, with phase winding shape
Winding is covered at K.
9. according to the method any in claim 6-8, which is characterized in that when winding is formed by two strands and around coiling,
Two strands of conducting wires are made of according to radial distribution, winding six or multiple coil groups, are needed according to an outer layer when winding line
Conducting wire and a concatenated mode of inner conductor form phase winding, but the coil and inner conductor of concatenated outer layer conductor composition
The coil space position of composition differs 0 ° or close to 0 °；
And if be K around radical, it is even number that K, which is greater than 2 and K, is needed when winding line according to two concatenated sides of different layer conductors
Formula forms phase winding, but two coil space positions of connecting differ 0 ° or close to 0 °, while the volume for two conducting wires being connected in series
Number the sum of be equal to K+1, be connected in series in the manner described above, form K with phase winding and cover winding, simultaneously needs are made around winding in multi cord
Using identical line footpath, coil pitch, coil straightness, winding height and the number of turns.
10. the method according to claim 1, wherein when winding is formed by internal layer winding is nested with outer layer winding
When, the internal layer winding is nested in such a way that the identical leading-out terminal of ectonexine is aligned on spatial position with outer layer winding,
Nested winding connects to form phase winding according to two coils of the opposite polarity same winding, and two of the same windings in series
Coil space position differs 180 ° or close to 180 °, is connected in series in the manner described above, and outer layer winding and internal layer winding form two
Cover phase winding；
Or nested sub-thread winding quantity K, when being more than or equal to 3, K is integer, and nested winding is mutually nested by sub-thread K set winding,
It is aligned according to K layers of in-phase coil of identical leading-out terminal with the center of circle of winding cross-section when nested, nested winding is needed according to polarity
Two coils of the opposite same winding connect to form phase winding, but two coil space positions of the same windings in series
It differs 180 ° or close to 180 °, is connected in series in the manner described above, K covers winding K and covers phase winding.
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| CN110492647B (en) | 2022-03-04 |
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