CN105406629A - Motor stator and permanent magnet generator - Google Patents
Motor stator and permanent magnet generator Download PDFInfo
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- CN105406629A CN105406629A CN201510927661.3A CN201510927661A CN105406629A CN 105406629 A CN105406629 A CN 105406629A CN 201510927661 A CN201510927661 A CN 201510927661A CN 105406629 A CN105406629 A CN 105406629A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
Abstract
The invention provides a motor stator and a permanent magnet generator. The number q of slots of each pole and each phase of the motor stator is 2/5; and the motor stator comprises two sets of Y-connected stator windings. An electrical angle of 30 degrees exists between the two sets of the stator windings; and the motor stator comprises at least a first stator module and at least a second stator module both of which are processed independently. When the motor stator in such the structure is applied to a motor, the motor performance can be improved.
Description
Technical field
The present invention relates to electrical generator fields, particularly relate to a kind of motor stator, permanent magnet generator.
Background technology
Along with the raising of large-scale permanent magnet generator capacity, the volume of generator and size be corresponding increase also, thus causes generator unit stator in the cost increase manufactured and in transport.Stator core manual-chop can solve well because stator dimensions increases the problem that manufacturing cost is high and transport is inconvenient brought.At present, stator core manual-chop is mainly used in single-layer winding structure of single or the concentratred winding structure that MgO-ZrO_2 brick is 1.
Although single layer winding technology can separate the problem that determinant manufacturing cost is high and transport is inconvenient, but the stator due to single layer winding adopts whole apart from pitch design, it cannot weaken the content in 5,7 subharmonic magnetic fields effectively, larger torque pulsation problem can be brought, the vibration & noise of generator is exceeded standard.
In addition, the end winding shape under the out of phase of single layer winding is different, and coil manufacture is more difficult.It is little that concentratred winding has end winding length, the coil shape phase same advantages under out of phase.But in prior art, adopt the magneto of concentratred winding in order to improve magnet steel utilance, stator all adopts semi-enclosed slot design principle, causes motor entirety not roll off the production line, and can only carry out monodentate and roll off the production line, and then be assembled together with stator yoke and stator support.For large-scale magneto, because its number of stator slots is more, stator adopts semi-enclosed slot design to make motor assembly technology complicated, in addition because motor build-up member is more, virtually adds the quantity of motor potential risk point, reduces the reliability of motor.
Summary of the invention
Embodiments of the invention provide a kind of motor stator, permanent magnet generator, to solve the problem of permanent magnet generator poor performance.
For achieving the above object, embodiments of the invention provide a kind of motor stator, the MgO-ZrO_2 brick q of motor stator is 2/5, and comprise the stator winding that two cover Y connect, difference 30 ° of electrical degrees between this two covers stator winding, motor stator comprises at least one first stator modules and at least one second stator modules of independent processing.
Further, the stator slot of stator is open slot.
Further, the winding coil pitch of two cover stator winding is 1, and the equal turn numbers of each winding coil.
Further, stator comprises at least one first stator modules and at least one second stator modules of alternate setting.
Further, the first stator modules is 12, and the second stator modules is 12, then the number of teeth of the first stator modules is 6, and the number of teeth of the second stator modules is 6; Or first stator modules be 4, the second stator modules is 4, then the number of teeth of the first stator modules is 18, and the number of teeth of the second stator modules is 18; Or first stator modules be 24, the second stator modules is 24, then the number of teeth of the first stator modules is 3, and the number of teeth of the second stator modules is 3; Or first stator modules be 36, the second stator modules is 36, then the number of teeth of the first stator modules is 2, and the number of teeth of the second stator modules is 2; Or first stator modules be 72, the second stator modules is 72, then the number of teeth of the first stator modules is 1, and the number of teeth of the second stator modules is 1.
Further, stator comprises multiple stator tooth, and stator tooth is parallel teeth.
According to a further aspect in the invention, a kind of permanent magnet generator is provided, comprise stators and rotators, permanent magnet generator is two 3 phases, and the MgO-ZrO_2 brick q of permanent magnet generator is 2/5, stator comprises two cover stator winding, and difference 30 ° of electrical degrees between two cover stator winding, two cover stator winding are Y and connect, and two cover stator winding are double-deck concentratred winding.
Further, the stator slot of stator is open slot.
Further, stator comprises multiple stator tooth, and stator tooth is parallel teeth.
Further, the winding coil pitch of two cover stator winding is 1, and the equal turn numbers of each winding coil.
Further, stator comprises at least one first stator modules and at least one second stator modules of alternate setting.
Further, the first stator modules is 12, and the second stator modules is 12, then the number of teeth of the first stator modules is 6, and the number of teeth of the second stator modules is 6; Or first stator modules be 4, the second stator modules is 4, then the number of teeth of the first stator modules is 18, and the number of teeth of the second stator modules is 18; Or first stator modules be 24, the second stator modules is 24, then the number of teeth of the first stator modules is 3, and the number of teeth of the second stator modules is 3; Or first stator modules be 36, the second stator modules is 36, then the number of teeth of the first stator modules is 2, and the number of teeth of the second stator modules is 2; Or first stator modules be 72, the second stator modules is 72, then the number of teeth of the first stator modules is 1, and the number of teeth of the second stator modules is 1.
Further, six winding coils on the first stator modules are AX, xa, YB, by, CZ, zc by the lead-out wire of first end to the second end successively.
Further, six winding coils on the second stator modules are XA, ax, BY, yb, ZC, cz by the lead-out wire of first end to the second end successively.
Further, rotor comprises radial surface-mount type magnet steel.
Further, the maximum air gap length of the external diameter of magnet steel and stator and minimal air gap length ratio are 3:2.
Further, rotor magnetic pole is oblique pole, and first end and second end of the first side of magnet steel have spacing Kt in the circumference of rotor, and first end is the first end along rotor axial, and the second end is the second end along rotor axial.
Further, this spacing Kt is 1 times of stator tooth distance.
Further, have the first angle a between the side of magnet steel and the base of magnet steel, the span of the first angle a is 40 ° to 80 °.
Further, the span of the first angle a is 65 ° to 75 °.
The motor stator of embodiments of the invention adopts two Y to move 30 ° of concentratred winding structures, its MgO-ZrO_2 brick q is 2/5, generator unit stator winding and assembly difficulty unshakable in one's determination can be effectively reduced when being applied in permanent magnet generator, improve the utilance of stator winding coefficient and rotor magnetic steel, reduce permanent magnet generator load current and the torque pulsation value under load behavior, reduce the vibration & noise of generator, extend the life-span of generator and improve the reliability of generator; The modularized design of high-power permanent magnet generator can also be applied to.It comprises at least one first stator modules and at least one second stator modules of independent processing, adopts manual-chop can reduce difficulty of processing and cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the stator distinguish of the permanent magnet generator of embodiments of the invention;
Fig. 2 is the structural representation of the first stator modules of the stator of the permanent magnet generator of embodiments of the invention;
Fig. 3 is the structural representation of the winding coil lead-out wire of the first stator modules of the permanent magnet generator of embodiments of the invention;
Fig. 4 is the structural representation of the second stator modules of the stator of the permanent magnet generator of embodiments of the invention;
Fig. 5 is the structural representation of the winding coil lead-out wire of the second stator modules of the permanent magnet generator of embodiments of the invention;
Fig. 6 is the partial structurtes schematic diagram of the cross section of the rotor of the permanent magnet generator of embodiments of the invention;
Fig. 7 is the partial structurtes schematic diagram of the axis of the rotor of the permanent magnet generator of embodiments of the invention;
Fig. 8 is the partial enlarged drawing of the rotor of the permanent magnet generator of embodiments of the invention and the air gap of stator;
Fig. 9 is the line schematic diagram of wherein a set of stator winding of the stator of the permanent magnet generator of embodiments of the invention;
Figure 10 is the line schematic diagram of the another set of stator winding of the stator of the permanent magnet generator of embodiments of the invention.
Description of reference numerals:
1, the first tooth of the first stator modules; First tooth of the 1 ', second stator modules; 2, the second tooth of the first stator modules; Second tooth of the 2 ', second stator modules; 3, the 3rd tooth of the first stator modules; 3rd tooth of the 3 ', second stator modules; 4, the 4th tooth of the first stator modules; 4th tooth of the 4 ', second stator modules; 5, the 5th tooth of the first stator modules; 5th tooth of the 5 ', second stator modules; 6, the 6th tooth of the first stator modules; 6th tooth of the 6 ', second stator modules; 10, stator; 11, winding coil; 12, the first stator modules; 13, the second stator modules; 20, rotor; 21, magnet steel.
Embodiment
Below in conjunction with accompanying drawing, the motor stator of the embodiment of the present invention, permanent magnet generator are described in detail.
Consult Fig. 1, in the present embodiment, motor stator 10 adopts stator manual-chop to process, the MgO-ZrO_2 brick q of this motor stator is 2/5, and comprise the stator winding that two cover Y connect, difference 30 ° of electrical degrees between this two covers stator winding, motor stator comprises at least one first stator modules 12 and at least one second stator modules 13 of independent processing.This motor stator can be applied in generator, also can be applied in motor, and it has, and processing cost is low, the advantage of convenient transportation, electromagnetism and good mechanical property.
In order to reduce transport and the production cost of stator, stator 10 adopts stator manual-chop to process.Stator 10 comprises at least one first stator modules 12 and at least one second stator modules 13 of alternate setting.Stator 10 is along the circumferential direction evenly divided into many lobes, and every lobe is processed separately and can be improved working (machining) efficiency and the size reducing processing mold and frock, and then cuts down finished cost, and is more convenient to transport simultaneously, reduces cost of transportation.Only each lobe can need be formed stator 10 according to predetermined order together with position grouping during use.Due in the present embodiment, the three-phase of a set of stator winding is 120 ° of electrical degrees, therefore the first stator modules 12 and the alternate setting of the second stator modules 13.
Consult Fig. 2, preferably, production of conveniently rolling off the production line, the stator slot of stator is open slot, and the stator tooth of stator 10 is parallel teeth, processing of can rolling off the production line smoothly like this.Because two limits of winding coil 11 are parallel to each other, for making winding coil 11 coordinate with stator tooth well, thus stator tooth is parallel teeth.
Preferably, in order to improve reliability, winding coil 11 pitch of two cover stator winding is 1, and the equal turn numbers of each winding coil 11.The pitch of winding coil 11 is 1 stator tooth can be made wider, makes coiling easier, and is not easily fractureed by winding.
Quantity and the number of teeth thereof of the first stator modules 12 and the second stator modules 13 can be determined as required, include but not limited to following several exemplary cases:
First stator modules 12 is 12, and the second stator modules 13 is 12, then the number of teeth of the first stator modules 12 is 6, and the number of teeth of the second stator modules 13 is 6.Or
First stator modules 12 is 4, and the second stator modules 13 is 4, then the number of teeth of the first stator modules 12 is 18, and the number of teeth of the second stator modules 13 is 18.Or
First stator modules 12 is 24, and the second stator modules 13 is 24, then the number of teeth of the first stator modules 12 is 3, and the number of teeth of the second stator modules 13 is 3.Or
First stator modules 12 is 36, and the second stator modules 13 is 36, then the number of teeth of the first stator modules 12 is 2, and the number of teeth of the second stator modules 13 is 2.Or
First stator modules 12 is 72, and the second stator modules 13 is 72, then the number of teeth of the first stator modules 12 is 1, and the number of teeth of the second stator modules 13 is 1.
In another embodiment, a kind of permanent magnet generator is also provided, it comprises stators and rotators, permanent magnet generator is two 3 phases, and the MgO-ZrO_2 brick q of permanent magnet generator is 2/5, stator comprises two cover stator winding, and difference 30 ° of electrical degrees between two cover stator winding, two cover stator winding are Y and connect, and two cover stator winding are double-deck concentratred winding.Adopt fractional-slot and make the electrical degree between two cover stator winding differ 30 ° of the 5th that can reduce stator winding and the 7th subharmonic magnetic field content, reduce pulsating torque.
Preferably, the stator slot of stator 10 is open slot.Adopt double-deck concentratred winding and open slot can improve the reliability of permanent magnet generator.
Again as shown in Figure 1, in order to reduce transport and the production cost of permanent magnet generator, the stator 10 of permanent magnet generator adopts stator manual-chop to process.Stator 10 comprises at least one first stator modules 12 and at least one second stator modules 13 of alternate setting.Stator 10 is along the circumferential direction evenly divided into many lobes, and every lobe is processed separately and can be improved working (machining) efficiency and the size reducing processing mold and frock, and then cuts down finished cost, and is more convenient to transport simultaneously, reduces cost of transportation.Only each lobe can need be formed stator 10 according to predetermined order together with position grouping during use.
In the present embodiment, permanent magnet generator is external rotor, internal stator structure.The number of phases of permanent magnet generator is two 3 phases (i.e. 6 phases), and number of poles is 120 poles, and number of stator slots is 144 grooves, and the difference of adjacent two stator slots of stator 10 is 150 ° of electrical degrees.Certainly, number of poles and the number of stator slots of permanent magnet generator are not limited to this, and in other embodiments, the number of poles of permanent magnet generator and number of stator slots can be selected as required, as long as ensure that MgO-ZrO_2 brick q is 2/5.
Certainly, permanent magnet generator also can be external stator, inner rotor core.
In the present embodiment, each first stator modules has 6 stator tooths, and each second stator modules has 6 stator tooths, and stator 10 has 12 the first stator modules and 12 the second stator modules 13.Certainly, in other embodiments, the number of teeth of the first stator modules 12 and the second stator modules 13 can be determined as required, and accordingly, the first stator modules 12 that stator 10 comprises and the quantity of the second stator modules 13 also can be determined as required.Such as: if the number of teeth of the first stator modules 12 and the second stator modules 13 is 18, then stator 10 comprises the quantity of the first stator modules 12 and the second stator modules 13 is each 4.If the number of teeth of the first stator modules 12 and the second stator modules 13 is 12,24,36 or 72, then the quantity that corresponding stator 10 comprises the first stator modules 12 and the second stator modules 13 is each 6,3,2 or 1.
Again as shown in Figures 2 and 3, the stator slot on the stator core of the first stator modules 12 is open slot.Winding coil 11 on first stator modules 12 is AX, xa, YB, by, CZ, zc by the lead-out wire of first end to the second end successively.
Also be in single first stator modules 12, the winding coil 11 of A1 phase is 1, the i.e. winding AX of winding on the first tooth 1 of the first stator modules, wherein exit A draws from the left side (being the left side Fig. 2 and Fig. 3 on the left of this) of the first tooth 1 of the first stator modules, and exit X draws from the right side (being the right side Fig. 2 and Fig. 3 on the right side of this) of the first tooth 1 of the first stator modules.
The winding coil 11 of B1 phase is 1, i.e. the winding YB of winding on the 3rd tooth 3 of the first stator modules, and wherein exit Y draws from the left side of the 3rd tooth 3 of the first stator modules, and exit B draws from the right side of the 3rd tooth 3 of the first stator modules.
The winding coil 11 of C1 phase is 1, i.e. the winding CZ of winding on the 5th tooth 5 of the first stator modules, and wherein exit C draws from the left side of the 5th tooth 5 of the first stator modules, and exit Z draws from the right side of the 5th tooth 5 of the first stator modules.
Wherein A1 phase, B1 phase and C1 phase are the part of a set of stator winding.In this cover stator winding, exit X, exit Y and exit Z link together, and exit A, exit B and exit C draw the leading-out terminal (as shown in Figure 9) forming this cover Y connection stator winding.
The winding coil of A2 phase is 1, i.e. the winding xa of winding on the second tooth 2 of the first stator modules, and wherein exit x draws from the left side of the second tooth 2 of the first stator modules, and exit a draws from the right side of the second tooth 2 of the first stator modules.
The winding coil 11 of B2 phase is 1, i.e. the winding by of winding on the 4th tooth 4 of the first stator modules, and wherein exit b draws from the left side of the 4th tooth 4 of the first stator modules, and exit y draws from the right side of the 4th tooth 4 of the first stator modules.
The winding coil 11 of C2 phase is 1, i.e. the winding zc of winding on the 6th tooth 6 of the first stator modules, and wherein exit z draws from the left side of the 6th tooth 6 of the first stator modules, and exit c draws from the side on the 6th tooth 6 right side of the first stator modules.
Wherein A2 phase, B2 phase and C2 phase are the part of another set of stator winding.In this another set of stator winding, exit x, exit y and exit z link together, and exit a, exit b and exit c form the leading-out terminal (as shown in Figure 10) of this another set of Y connection stator winding.
Shown in Fig. 4 and Fig. 5, the stator slot on the stator core of the second stator modules 13 is open slot.Winding coil 11 on second stator modules 13 is XA, ax, BY, yb, ZC, cz by the lead-out wire of first end to the second end successively.
Also be in single second stator modules 13, the winding coil 11 of A1 phase is 1, the i.e. winding XA of winding on the first tooth 1 ' of the second stator modules, wherein exit X draws from the left side of the first tooth 1 ' of the second stator modules, and exit A draws from the right side of the first tooth 1 ' of the second stator modules.
The winding coil 11 of B1 phase is 1, i.e. the winding BY of winding on the 3rd tooth 3 ' of the second stator modules, and wherein exit B draws from the left side of the 3rd tooth 3 ' of the second stator modules 13, and exit Y draws from the right side of the 3rd tooth 3 ' of the second stator modules 13.
The winding coil 11 of C1 phase is 1, the i.e. winding ZC of winding on the 5th tooth 5 ' of the second stator modules 13, wherein exit Z draws from the left side of the 5th tooth 5 ' of the second stator modules 13, and exit C draws from the right side of the 5th tooth 5 ' of the second stator modules 13.
Similarly, the A1 phase in the second stator modules 13, B1 phase and C1 phase and the A1 phase in the first stator modules 12, B1 phase are identical with C1 phase, are the part of same set of stator winding.Exit X, exit Y and exit Z link together, and exit A, exit B and exit C draw the leading-out terminal (as shown in Figure 9) forming this cover Y connection stator winding.
The winding coil 11 of A2 phase is 1, the i.e. winding ax of winding on the second tooth 2 ' of the second stator modules 13, wherein exit a draws from the left side of the second tooth 2 ' of the second stator modules 13, and exit x draws from the right side of the second tooth 2 ' of the second stator modules 13.The winding coil 11 of B2 phase is 1, the i.e. winding yb of winding on the 4th tooth 4 ' of the second stator modules 13, wherein exit y draws from the left side of the 4th tooth 4 ' of the second stator modules 13, and exit b draws from the right side of the 4th tooth 4 ' of the second stator modules 13.
The winding coil 11 of C2 phase is 1, the i.e. winding cz of winding on the 6th tooth 6 ' of the second stator modules 13, wherein exit c draws from the left side of the 6th tooth 6 ' of the second stator modules 13, and exit z draws from the right side of the 6th tooth 6 ' of the second stator modules 13.
Similarly, the A2 phase in the second stator modules 13, B2 phase and C2 phase and the A2 phase in the first stator modules 12, B2 phase are identical with C2 phase, are the part of this another set of stator winding.Exit x, exit y and exit z link together, and exit a, exit b and exit c form the leading-out terminal (as shown in Figure 10) of this another set of Y connection stator winding.
Stator 10 is made up of multiple first stator modules 12 and alternate setting of the second stator modules 13.Exit A, the exit B of each first stator modules 12 and each second stator modules 13, exit C, exit a, exit b need carry out connection in series-parallel connection with the homophase exit in other stator modules or be directly connected with end ring according to design with exit c.Two cover stator winding of final formation stator 10.
Difference 30 ° of electrical degrees between this two covers stator winding.Three-phase windings mutual deviation in same set of stator winding 120 ° of electrical degrees, can guarantee to reduce the 5th and the 7th subharmonic content, torque ripple reduction thus.Each winding coil 11 is double-deck centralized winding simultaneously, the pitch of winding coil 11 is 1, and the number of turn of each winding coil 11 is equal, and stator slot is open slot makes when stator distinguish is produced, coil manufacturing process is simple, reduces and adopts the complexity of the generator assembly technology of centralized winding and improve reliability.
In the present embodiment, the stator tooth of stator 10 is parallel teeth, processing of can rolling off the production line smoothly like this.Because two limits of winding coil 11 are parallel to each other, for making winding coil 11 coordinate with stator tooth well, thus stator tooth is parallel teeth.Shown in Fig. 6 and Fig. 7, in the present embodiment, rotor 20 comprises radial surface-mount type magnet steel 21, can reduce the magnetic leakage factor of permanent magnet thus, improves the utilance of permanent magnet.Particularly, along the circumferencial direction of rotor field spider, permanent magnet successively compartment of terrain is fixed on the rack inner wall of rotor field spider.And permanent magnet is that N pole and S are extremely alternate towards the magnetic pole of stator 10.120 magnetic poles are defined thus on rotor 20.The partial structurtes of rotor have been shown in Fig. 6 and Fig. 7, totally 5 magnetic poles in figure, two N pole is towards magnet steel 21, three S poles of stator 10 towards the magnet steel 21 of stator 10, and wherein N pole is respectively fixed on the inwall of rotor field spider towards the magnet steel 21 of stator 10 with the magnet steel 21 of S pole towards stator 10.
Preferably, magnet steel 21 adopts oblique pole to design.Also namely the first end (first end is the first end along rotor 20 axis) of the first side of magnet steel 21 has spacing Kt with the second end (the second end is the second end along rotor 20 axis) in the circumference of rotor 20.The oblique pole size (being also spacing Kt) of magnet steel 21 is one times of stator tooth distance.
Also be, as shown in Figure 7, the arc length of the top (first end) of the same edge of magnet steel 21 and bottom (the second end) spacing Kt is in a circumferential direction 2.5 ° at the mechanical angle that this magnetic pole is circumferentially corresponding, just in time equals 1 stator tooth apart from corresponding mechanical angle 360 ° of ÷ 144=2.5 °.
As shown in Figure 8, preferably, the one side towards stator 10 of magnet steel 21 is cambered surface, each magnet steel 21 forms non-uniform gap with the cylindrical of stator 10, and the maximum air gap length of external diameter of each magnet steel 21 and stator 10 and the ratio of minimal air gap length are 3:2 (i.e. 1.5:1), to improve the sine of air-gap field.
Have the first angle a between the base (one side near rotor field spider) of the side of magnet steel 21 and magnet steel 21, the span of this first angle a is 40 ° to 80 °.Preferably, the span of this first angle a is 65 ° to 75 °.Such as, 65 °, 70 ° or 75 °.In addition, in order to reduce the eddy current loss in magnet steel 21, every block magnet steel 21 is unsuitable excessive in the length axially of permanent magnetic valve motor, and concrete size can be determined according to design requirement.
While adopting above-mentioned stator 10 and rotor 20 that permanent magnet generator capacity can be made to increase, reduce the cost of permanent magnet generator stator manufacture and transport; Ensure that permanent magnet generator air-gap field waveform sine is good, no-load back electromotive force waveform is good, and no-load torque pulsation is little; And substantially eliminate the 5th and the 7th subharmonic magnetomotive force of stator winding, improve stator winding coefficient, reduce permanent magnet generator load current and load torque pulsating quantity, weaken the driving source of permanent magnet generator vibration & noise.
In addition, owing to have employed concentratred winding structure, enormously simplify winding coil manufacturing cost; The design of the open slot of stator realizes the overall inserting-coil process of the winding coil of permanent magnet generator, reduces the difficulty that rolls off the production line, and improves the global reliability of electric machine iron core and winding.Two Y is adopted to move the winding connecting method of 30 ° of electrical degrees, on the basis not increasing coil key dimension and manufacturing cost, improve winding profit coefficient, and effectively can weaken the 5th and the 7th winding harmonic wave magnetomotive force, reduce generator loading electric current and load torque pulsation, improve generator efficiency and reliability, and the object of stator distinguish design can be realized.Permanent magnet generator of the present invention has following effect:
Permanent magnet generator stator adopts distinguish design, to reduce the cost of stator manufacture and transport.
Permanent magnet generator adopts MgO-ZrO_2 brick q to be the design principle of 2/5, and the number of phases is two 3 phases, and stator slot adopts open slot design, and stator tooth is parallel teeth; And adopt concentratred winding structure, the winding that stator winding differs 30 ° by two cover electrical degrees is formed, the connected mode of stator double winding is Y and connects, make to adopt the Large Copacity permanent magnet generator of manual-chop effectively can weaken the 5th and the 7th subharmonic magnetic field, reduce torque pulsation, reduce coil manufacture difficulty simultaneously.Motor assembly complexity can be reduced in addition, improve reliability.Make that mechanism of power generation fabrication technique is simple, reliability is higher.
Rotor of permanent-magnetic power generator magnetic pole adopts oblique pole to design, and oblique pole is of a size of 1 times of stator tooth distance, can reduce cogging torque and the load pulsating torque of motor.
Rotor magnet steel of permanent magnet generator adopts radial surface-mount type, and the maximum air gap length of magnet steel and stator outer diameter and minimal air gap length ratio are 1.5, air-gap field can be made to distribute close to sine, and improve rotor permanent magnet utilance, greatly weaken cogging torque.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (20)
1. a motor stator, it is characterized in that, the MgO-ZrO_2 brick q of described motor stator is 2/5, and comprise the stator winding that two cover Y connect, difference 30 ° of electrical degrees between this two covers stator winding, described motor stator comprises at least one first stator modules (12) and at least one second stator modules (13) of independent processing.
2. motor stator according to claim 1, is characterized in that, the stator slot of described stator is open slot.
3. motor stator according to claim 1, is characterized in that, winding coil (11) pitch of the described stator winding of two covers is 1, and the equal turn numbers of each described winding coil (11).
4. motor stator according to claim 1, is characterized in that, described stator comprises at least one first stator modules (12) and at least one second stator modules (13) of alternate setting.
5. motor stator according to claim 4, it is characterized in that, described first stator modules (12) is 12, described second stator modules (13) is 12, then the number of teeth of described first stator modules (12) is 6, and the number of teeth of described second stator modules (13) is 6; Or
Described first stator modules (12) is 4, and described second stator modules (13) is 4, then the number of teeth of described first stator modules (12) is 18, and the number of teeth of described second stator modules (13) is 18; Or
Described first stator modules (12) is 24, and described second stator modules (13) is 24, then the number of teeth of described first stator modules (12) is 3, and the number of teeth of described second stator modules (13) is 3; Or
Described first stator modules (12) is 36, and described second stator modules (13) is 36, then the number of teeth of described first stator modules (12) is 2, and the number of teeth of described second stator modules (13) is 2; Or
Described first stator modules (12) is 72, and described second stator modules (13) is 72, then the number of teeth of described first stator modules (12) is 1, and the number of teeth of described second stator modules (13) is 1.
6. motor stator according to any one of claim 1 to 5, is characterized in that, described stator comprises multiple stator tooth, and described stator tooth is parallel teeth.
7. a permanent magnet generator, comprise stator (10) and rotor (20), it is characterized in that, described permanent magnet generator is two 3 phases, and the MgO-ZrO_2 brick q of described permanent magnet generator is 2/5, described stator (10) comprises two cover stator winding, and difference 30 ° of electrical degrees between two covers described stator winding, the described stator winding of two covers is Y and connects, and the described stator winding of two covers is double-deck concentratred winding.
8. permanent magnet generator according to claim 7, is characterized in that, the stator slot of described stator (10) is open slot.
9. permanent magnet generator according to claim 7, is characterized in that, described stator (10) comprises multiple stator tooth, and described stator tooth is parallel teeth.
10. permanent magnet generator according to claim 7, is characterized in that, winding coil (11) pitch of the described stator winding of two covers is 1, and the equal turn numbers of each described winding coil (11).
11. permanent magnet generatores according to claim 7, is characterized in that, described stator (10) comprises at least one first stator modules (12) and at least one second stator modules (13) of alternate setting.
12. permanent magnet generatores according to claim 11, it is characterized in that, described first stator modules (12) is 12, described second stator modules (13) is 12, then the number of teeth of described first stator modules (12) is 6, and the number of teeth of described second stator modules (13) is 6; Or
Described first stator modules (12) is 4, and described second stator modules (13) is 4, then the number of teeth of described first stator modules (12) is 18, and the number of teeth of described second stator modules (13) is 18; Or
Described first stator modules (12) is 24, and described second stator modules (13) is 24, then the number of teeth of described first stator modules (12) is 3, and the number of teeth of described second stator modules (13) is 3; Or
Described first stator modules (12) is 36, and described second stator modules (13) is 36, then the number of teeth of described first stator modules (12) is 2, and the number of teeth of described second stator modules (13) is 2; Or
Described first stator modules (12) is 72, and described second stator modules (13) is 72, then the number of teeth of described first stator modules (12) is 1, and the number of teeth of described second stator modules (13) is 1.
13. permanent magnet generatores according to claim 11, is characterized in that, six winding coils (11) on described first stator modules (12) are AX, xa, YB, by, CZ, zc by the lead-out wire of first end to the second end successively.
14. permanent magnet generatores according to claim 11 or 13, it is characterized in that, six winding coils (11) on described second stator modules (13) are XA, ax, BY, yb, ZC, cz by the lead-out wire of first end to the second end successively.
15. permanent magnet generatores according to claim 7, is characterized in that, described rotor (20) comprises radial surface-mount type magnet steel (21).
16. permanent magnet generatores according to claim 15, is characterized in that, maximum air gap length and the minimal air gap length ratio of the external diameter of described magnet steel (21) and described stator (10) are 3:2.
17. permanent magnet generatores according to claim 15, it is characterized in that, described rotor (20) magnetic pole is oblique pole, first end and second end of the first side of described magnet steel (21) have spacing Kt in the circumference of described rotor (20), described first end is along the axial first end of described rotor (20), and described second end is along the second axial end of described rotor (20).
18. permanent magnet generatores according to claim 17, is characterized in that, described spacing Kt is 1 times of stator tooth distance.
19. according to claim 15 to the permanent magnet generator according to any one of 18, it is characterized in that, have the first angle a between the side of described magnet steel (21) and the base of described magnet steel (21), the span of described first angle a is 40 ° to 80 °.
20. permanent magnet generatores according to claim 19, is characterized in that, the span of described first angle a is 65 ° to 75 °.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927661.3A CN105406629A (en) | 2015-12-14 | 2015-12-14 | Motor stator and permanent magnet generator |
| PCT/CN2016/106432 WO2017101637A1 (en) | 2015-12-14 | 2016-11-18 | Motor stator, permanent magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927661.3A CN105406629A (en) | 2015-12-14 | 2015-12-14 | Motor stator and permanent magnet generator |
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| Publication Number | Publication Date |
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| CN105406629A true CN105406629A (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510927661.3A Pending CN105406629A (en) | 2015-12-14 | 2015-12-14 | Motor stator and permanent magnet generator |
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| Country | Link |
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| CN (1) | CN105406629A (en) |
| WO (1) | WO2017101637A1 (en) |
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| CN106451860A (en) * | 2016-10-31 | 2017-02-22 | 北京金风科创风电设备有限公司 | Monitoring device for permanent magnet pole of permanent magnet motor and press strip of permanent magnet pole |
| CN106849408A (en) * | 2017-04-20 | 2017-06-13 | 郑州轻工业学院 | A kind of stator structure of new weakening motor torque ripple |
| WO2017101637A1 (en) * | 2015-12-14 | 2017-06-22 | 新疆金风科技股份有限公司 | Motor stator, permanent magnet generator |
| CN109546764A (en) * | 2018-11-05 | 2019-03-29 | 东南大学 | A kind of unit-combination type can modularized motor |
| CN110337772A (en) * | 2017-02-02 | 2019-10-15 | 西门子歌美飒可再生能源公司 | segmented stator motor |
| CN111130234A (en) * | 2018-10-30 | 2020-05-08 | 西门子歌美飒可再生能源公司 | Electric machine with hybrid tooth design |
| US11888348B2 (en) | 2018-10-30 | 2024-01-30 | Siemens Gamesa Renewable Energy A/S | Electrical machine having a segmented stator or rotor |
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| CN108512333A (en) * | 2018-04-24 | 2018-09-07 | 新疆金风科技股份有限公司 | Modular stator and wind power generating set |
| CN111478540A (en) * | 2020-05-18 | 2020-07-31 | 沈阳工业大学 | Permanent magnet motor concentrated winding modulation method and adjustable winding |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017101637A1 (en) * | 2015-12-14 | 2017-06-22 | 新疆金风科技股份有限公司 | Motor stator, permanent magnet generator |
| CN106451860A (en) * | 2016-10-31 | 2017-02-22 | 北京金风科创风电设备有限公司 | Monitoring device for permanent magnet pole of permanent magnet motor and press strip of permanent magnet pole |
| CN110337772A (en) * | 2017-02-02 | 2019-10-15 | 西门子歌美飒可再生能源公司 | segmented stator motor |
| US11196314B2 (en) | 2017-02-02 | 2021-12-07 | Siemens Gamesa Renewable Energy A/S | Segmented stator electrical machine |
| CN106849408A (en) * | 2017-04-20 | 2017-06-13 | 郑州轻工业学院 | A kind of stator structure of new weakening motor torque ripple |
| CN106849408B (en) * | 2017-04-20 | 2017-09-12 | 郑州轻工业学院 | A kind of stator structure for weakening motor torque ripple |
| CN111130234A (en) * | 2018-10-30 | 2020-05-08 | 西门子歌美飒可再生能源公司 | Electric machine with hybrid tooth design |
| US11362550B2 (en) | 2018-10-30 | 2022-06-14 | Siemens Gamesa Renewable Energy A/S | Electrical machine with hybrid tooth design |
| US11888348B2 (en) | 2018-10-30 | 2024-01-30 | Siemens Gamesa Renewable Energy A/S | Electrical machine having a segmented stator or rotor |
| CN109546764A (en) * | 2018-11-05 | 2019-03-29 | 东南大学 | A kind of unit-combination type can modularized motor |
| CN109546764B (en) * | 2018-11-05 | 2021-03-09 | 东南大学 | Unit combination type modularized motor |
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