CN107222046B - Tangential motor and tangential motor rotor - Google Patents
Tangential motor and tangential motor rotor Download PDFInfo
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- CN107222046B CN107222046B CN201710676598.XA CN201710676598A CN107222046B CN 107222046 B CN107222046 B CN 107222046B CN 201710676598 A CN201710676598 A CN 201710676598A CN 107222046 B CN107222046 B CN 107222046B
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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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a tangential motor and a tangential motor rotor, wherein the tangential motor comprises a tangential motor rotor and a stator (4), the tangential motor rotor is provided with an outer surface facing the stator (4), and a tooth shoe of the stator (4) is provided with an inner side surface facing the tangential motor rotor; the outer surface is provided with a trimming structure which is arranged corresponding to the magnetic steel (2) in the tangential motor rotor; or, the two sides of the inner side surface are provided with edge cutting structures symmetrically arranged along the central line of the inner side surface. The tangential motor provided by the invention can change the length of the air gap at each position of the tangential inner circular surface of the motor, so that the air gap magnetic field is improved, the air gap magnetic density and the sine degree of counter potential waveforms are improved, the harmonic duty ratio is reduced, the torque pulsation is reduced, and the vibration noise of the motor is effectively reduced.
Description
Technical Field
The invention relates to the technical field of motor equipment, in particular to a tangential motor and a tangential motor rotor.
Background
Because the tangential permanent magnet synchronous motor has the effect of 'magnetism gathering', compared with the radial permanent magnet synchronous motor, the tangential permanent magnet synchronous motor can generate higher air gap magnetic density, so that the motor has the advantages of small volume, light weight, large torque, large power density, high motor efficiency, good dynamic performance and the like, and is increasingly applied to the industrial fields of servo systems, electric traction and the like and the household appliance industry.
As shown in fig. 1, the tangential motor includes a tangential motor rotor and a stator 04, and the tangential motor rotor includes a rotating shaft 03, a rotor core 01, and a magnetic steel 02 disposed in the rotor core 01.
At present, the air gap flux density and the counter potential of the tangential permanent magnet synchronous motor contain various space harmonics, and the stator 04 of the tangential permanent magnet synchronous motor is provided with grooves, so that the magnetic path flux guide is uneven, the air gap flux density and the counter potential contain various space harmonics, the ratio of the harmonics is large, and the various harmonics interact to generate low-order force waves, so that the vibration noise of the motor is increased. The waveform sine degree is poor, the waveform distortion rate is high, so that the vibration and noise of the motor are large, the use health of a user is affected, and the application and popularization of the motor are limited.
Therefore, how to reduce the vibration noise of the motor is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a tangential motor rotor to reduce vibration noise of the motor. The invention also provides a tangential motor.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a tangential motor rotor having an outer surface facing a stator, the outer surface having a trim structure disposed in correspondence with magnetic steel within the tangential motor rotor.
Preferably, in the tangential motor rotor, the trimming structure of the outer surface is an eccentric cambered surface connected with the whole cambered surface of the outer surface, and the eccentric cambered surface is curved towards the inner side of the tangential motor rotor;
the eccentric cambered surface and the integral cambered surface are in smooth transition.
Preferably, in the tangential motor rotor, the radian of the eccentric cambered surface is larger as the tangential motor rotor is closer to a magnetic pole boundary line of the magnetic steel.
Preferably, in the tangential motor rotor, the radian of the eccentric cambered surface is a, and the angle occupied by a single magnetic pole of the tangential motor rotor is F;
0.95≥A/F≥0.7。
preferably, in the tangential motor rotor, the number of magnetic pole pairs of the motor is P, the radian of the eccentric cambered surface is a, an included angle between an eccentric arbitrary point connecting line and an eccentric connecting point connecting line is set to be θ1, the eccentric arbitrary point connecting line is a connecting line between an arbitrary point on the eccentric cambered surface and the center of the tangential motor rotor, the eccentric connecting point connecting line is a connecting line between an E connecting point and the center of the tangential motor rotor, and the E connecting point is a connecting point between the integral cambered surface and the eccentric cambered surface; the distance between any point on the eccentric cambered surface and the circle center of the tangential motor rotor is an eccentric diameter R2, and the eccentric diameter R2 and the radius R1 of the whole cambered surface meet the following relation:
wherein (1)>
Preferably, in the tangential motor rotor, the magnetic steel groove of the tangential motor rotor has an opening disposed toward the outer side of the tangential motor rotor, and the width L of the opening is smaller than the width M of the magnetic steel groove.
Preferably, in the tangential motor rotor, the openings are symmetrically arranged with respect to a center line of the magnetic steel groove.
Preferably, in the tangential motor rotor, L/M is more than or equal to 0.6 and more than or equal to 0.5.
Preferably, in the tangential motor rotor, a theoretical thickness of the opening corresponding to a center line of the magnetic steel groove is set to be U, and thicknesses of two sides of the opening are set to be V;
1.2≥U/V≥1.1。
the invention also provides a tangential motor, which comprises a tangential motor rotor and a stator, wherein the tangential motor rotor is the tangential motor rotor described in any one of the above.
Preferably, in the tangential motor, the tooth shoes of the stator have inner side faces facing the rotor of the tangential motor, and two sides of the inner side faces have trimming structures symmetrically arranged along the central line of the trimming structures.
Preferably, in the tangential motor, the trimming structure of the inner side surface is a curved tangential surface disposed on two sides of a middle surface of the inner side surface, and the curved tangential surface is curved toward the inner side of the stator.
Preferably, in the tangential motor, the radian of the curved section is G/2, and the angle occupied by a single tooth shoe of the stator is H;
0.7≥G/H≥0.4。
preferably, in the tangential motor, the number of slots on the stator is Q, and the radian of the curved section is G/2; the included angle between the curve arbitrary point connecting line and the curve connecting point connecting line is set as theta 2, the curve arbitrary point connecting line is the connecting line of any point on the curve tangent plane and the center of the stator, and the curve connecting point connecting line is a T connecting point and the stator centerThe connecting line of the circle centers of the stators is the connecting point of the middle surface and the curve tangential surface; the distance between any point on the curve tangent plane and the center of the stator is a stator trimming diameter R4, and the stator trimming diameter R4 and the inner circle radius R3 of the stator satisfy the following relation:
wherein (1)>
According to the technical scheme, the tangential motor rotor provided by the invention has the advantages that the outer surface is provided with the trimming structure which is arranged corresponding to the magnetic steel in the tangential motor rotor. Through setting up above-mentioned side cut structure, can change the air gap length of each position of motor along tangential inner circular surface, and then improve the air gap magnetic field for air gap density and back electromotive force waveform sine degree improve, reduced the harmonic and taken up ratio, and then reduced torque ripple, effectively reduced motor vibration noise.
The invention also provides a tangential motor with the tangential motor rotor. Since the tangential motor rotor has the above technical effects, the tangential motor having the tangential motor rotor should have the same technical effects, and will not be described in detail herein.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art motor;
fig. 2 is a schematic structural diagram of a first tangential motor according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a stator of a first tangential motor according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first tangential motor rotor according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second tangential motor according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second tangential motor rotor according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a third tangential motor according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a stator of a third tangential motor according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a third tangential motor rotor according to an embodiment of the present invention;
fig. 10 is a torque ripple comparison chart of a tangential motor according to an embodiment of the present invention and a tangential motor according to the prior art.
Detailed Description
The invention discloses a tangential motor rotor which is used for improving heating effect and heating efficiency. The invention also provides a motor with the tangential motor rotor.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 2-6, an embodiment of the present invention provides a tangential motor rotor, which has an outer surface facing a stator 4, and the outer surface has a trimming structure corresponding to a magnetic steel 2 in the tangential motor rotor.
The tangential motor rotor provided by the embodiment of the invention has the external surface provided with the trimming structure which is arranged corresponding to the magnetic steel 2 in the tangential motor rotor. Through setting up above-mentioned side cut structure, can change the air gap length of each position of motor along tangential inner circular surface, and then improve the air gap magnetic field for air gap density and back electromotive force waveform sine degree improve, reduced the harmonic and taken up ratio, and then reduced torque ripple, effectively reduced motor vibration noise.
It can be appreciated that the trimming structure of the corresponding arrangement of the magnetic steel 2 is aligned with the radial direction of the rotor of the tangential motor of the magnetic steel 2. The trimming structure is an edge structure obtained by cutting a part of the existing solid structure. The tangential motor rotor comprises a rotating shaft 3, a rotor core 1 and magnetic steel 2. The stator 4 is provided with stator slots 41, the stator slots 41 having openings 42 arranged towards the tangential motor rotor. The width of the opening 42 is K.
In this embodiment, the tangential motor rotor comprises a plurality of tangentially magnetized permanent magnets, adjacent two permanent magnets having the same polarity are oppositely disposed.
Preferably, the trimming structure of the outer surface is an eccentric cambered surface 12 connected with the whole cambered surface 11 of the outer surface, and the eccentric cambered surface 12 is bent towards the inner side of the tangential motor rotor; the eccentric cambered surface 12 and the integral cambered surface 11 are in smooth transition. In the present embodiment, the outer surface of the rotor core 1 of the tangential motor rotor is cut, and the structure of the stator 4 may be the same as the stator 4 in the related art. Wherein, the eccentric cambered surface 12 is a cambered surface structure with the center of the circle not coincident with the center of the tangential motor rotor.
Of course, the edge cutting structure of the outer side surface can also be provided as other structures, such as a plane.
The closer the eccentric cambered surface 12 is to the magnetic pole boundary of the magnetic steel 2, the larger the radian of the eccentric cambered surface 12 is. The connection point of the eccentric cambered surface and the integral cambered surface 11 is an E point, the eccentric cambered surface 12 changes along a curve function from the E point towards the magnetic pole boundary line direction, and the eccentric cambered surface 12 of the rotor core 1 extends along the circumferential direction. Through the arrangement, the air gap flux of the magnetic circuit is more uniform.
Preferably, the arc of the eccentric arc 12 is a and the angle occupied by the single pole of the tangential motor rotor is F. By arranging the eccentric cambered surface 12, the rotor core 1 is provided with a trimming edge, the outer wall of the rotor between the center lines of two magnetic poles of the rotor consists of a section of integral cambered surface 11, a section of eccentric cambered surface 12 and a section of integral cambered surface 11, the eccentric cambered surface 12 is positioned at the middle position, and the eccentric cambered surface 12 is generated after the existing complete arc surface (all the integral cambered surfaces 11) is cut. The radius of the whole cambered surface 11 is set to be R1, the periphery of the rotor is trimmed through the arrangement of the eccentric cambered surface 12, the radian of the eccentric cambered surface 12 is smaller than that of the whole cambered surface 11, the eccentric cambered surface 12 is symmetrical with respect to the central line of the magnetic steel groove, the eccentric cambered surface 12 is a curved surface, the curve is smoothly transited, and the eccentric cambered surface 12 changes along a curve function from the E point towards the central line direction of the permanent magnet groove. The eccentric cambered surface 12 extends along the circumferential direction, and the closer the eccentric cambered surface 12 is to the center line of the magnetic pole. Simulation researches show that the ratio of the radian of the eccentric cambered surface 12 to the radian of the integral cambered surface 11 has a larger influence on the air gap flux density harmonic. The eccentric cambered surface 12 is arranged on the rotor, so that the magnetic pole shape of the rotor is changed, and the magnetic pole is in a salient pole shape, so that the lengths of air gaps on the surface of the rotor are unequal. When A/F is more than or equal to 0.7, the length of the air gap at the two sides of the magnetic pole is increased, the air gap flux guide at the two sides of the magnetic pole and the air gap flux density at the two sides of the magnetic pole are reduced, so that the change of the flux guide is more uniform, the waveform of the air gap flux density is more similar to a sine wave, the air gap flux density and the counter-potential harmonic duty ratio are reduced, and further vibration noise is reduced. However, when A/F is more than 0.95, the trimming radians at two sides of the magnetic pole are too large, so that the length of an air gap at each position of the rotor surface is increased, the flux density of the air gap at each position of the rotor surface is reduced, the waveform of the air gap flux density is not improved, the waveform distortion rate is still higher, the vibration noise of the motor is still larger, meanwhile, the length of the air gap is too long, the flux linkage of the motor and the torque of the motor are reduced, and the efficiency of the motor is reduced. Thus, preferably, 0.95. Gtoreq.A/F. Gtoreq.0.7.
As shown in fig. 10, in this embodiment, the number of pairs of magnetic poles of the motor is P, the radian of the eccentric arc surface 12 is a, the included angle between the connecting line of any eccentric point and the connecting line of any eccentric connecting point is θ1, the connecting line of any eccentric point on the eccentric arc surface and the center of the tangential motor rotor is the connecting line of the connecting point E and the center of the tangential motor rotor, and the connecting point E is the connecting point of the whole arc surface 11 and the eccentric arc surface. That is, A/2 > θ1 > 0 DEG, and the eccentric cambered surface 12 gradually becomes larger and straighter along the curve change process θ1And changing to E point to the central line of the magnetic steel. The distance between any point on the eccentric cambered surface 12 and the circle center of the tangential motor rotor is an eccentric diameter R2. It will be appreciated that the eccentric diameter R2 tapers away from the point E along the curve. The eccentric diameter R2 and the radius R1 of the whole arc surface 11 satisfy the following relationship:
wherein the method comprises the steps of
Through the arrangement, the variability of the length of the air gap can be effectively reduced, so that the change of the air gap flux guide of the magnetic circuit is more uniform, the sine degree of the air gap flux density waveform on the surface of the rotor is improved, the harmonic duty ratio and the torque pulsation are reduced, the vibration noise and the harmonic loss of the motor are further reduced, and the efficiency of the motor is improved.
As shown in fig. 5 and 6, in the second embodiment, the magnetic steel groove of the tangential motor rotor has an opening 13 provided toward the outside of the tangential motor rotor, and the width L of the opening is smaller than the width M of the magnetic steel groove. Through the arrangement, the magnetic steel 2 is not easy to fly out of the magnetic steel groove during high-speed operation, and the mechanical strength of the rotor structure is ensured.
Preferably, the opening side of the opening 13 is planar.
Further, the openings 13 are symmetrically arranged with respect to the centerline of the magnetic steel groove. Through the arrangement, both sides of the opening are provided with solid parts for preventing the magnetic steel 2 from flying out of the magnetic steel groove.
Preferably, 0.6.gtoreq.L/M.gtoreq.0.5. In this range, the opening 13 increases the air gap length of the rotor surface at the position, so that the air gap flux transition of the motor magnetic circuit is more uniform, the waveform sine degree of the air gap flux density is improved, the harmonic duty ratio, torque pulsation, vibration noise and harmonic loss are reduced, and the motor efficiency is improved.
In the present embodiment, since the bottom surface of the opening 13 of the rotor permanent magnet slot is flat, it is symmetrical about the center line of the permanent magnet slot, and the center line of the opening is thick and thin on both sides. The theoretical thickness of the opening 13 corresponding to the center line of the magnetic steel groove is set as U, namely, when the opening 13 is not arranged, the distance from the eccentric cambered surface 12 corresponding to the center line of the magnetic steel groove to the bottom surface of the opening 13 is set as U, and the thickness of two sides of the opening 13 is set as V; at this time, 1.2 is greater than or equal to U/V is greater than or equal to 1.1. Through the arrangement, the abrupt change of the air gap length is reduced while the air gap length is increased, so that the air gap flux transition uniformity of a motor magnetic circuit is improved, the waveform sine degree of the air gap flux density is improved, and the harmonic wave occupation ratio and vibration noise are reduced.
It will be appreciated that, at the position where neither the stator 4 nor the magnet steel 2 is trimmed, the air gap is minimum, the air gap length is D, and the air gap length gradually increases from the position where the air gap is minimum to move clockwise or counterclockwise along the surface of the magnet steel 2 of the rotor.
The embodiment of the invention also provides a tangential motor with the tangential motor rotor. The tangential motor provided by the embodiment of the invention has the same technical effects as the tangential motor rotor, and will not be described in detail herein.
Preferably, in the tangential motor rotor provided by the embodiment of the invention, the tooth shoes of the stator are provided with inner side surfaces facing the tangential motor rotor, and the two sides of the inner side surfaces are provided with edge cutting structures symmetrically arranged along the central line of the inner side surfaces.
According to the stator provided by the embodiment of the invention, the edge cutting structures symmetrically arranged along the central line of the inner side surface are arranged on the two sides of the inner side surface, so that the length of an air gap of a motor at each position along the inner circular surface of the stator 1 can be changed, and further, the air gap magnetic field is improved, the magnetic density of the air gap and the sine degree of counter potential waveforms are improved, the harmonic duty ratio is reduced, further, the torque pulsation is reduced, and the vibration noise of the motor is effectively reduced.
It will be appreciated that the trim structure is an edge structure after a portion of the existing solid structure has been cut away.
Preferably, the trimming structure of the inner side surface is a curved tangential surface 43 disposed at both sides of the middle surface of the inner side surface, and the curved tangential surface 43 is curved toward the inner side of the stator. In this embodiment, the inner surface of the stator 4 shoe is cut away, and the structure of the rotor may be the same as that of the rotor in the related art.
Of course, the trimming structure of the inner side surface may be configured as other structures, such as a plane.
Wherein the radian of the curve section 43 is G/2, and the angle occupied by a single tooth shoe of the stator is H; as shown in fig. 8, the point of connection between the intermediate surface and the curved tangential surface 43 is a point T, and the cutting position (curved tangential surface 43) of the stator 4 shoe is near the air gap between the stator and the rotor. Simulation researches show that the ratio of the radian occupied by the curve section 43 (the cutting position of the stator 4 tooth shoes) to the angle occupied by the single tooth shoe is H, and the ratio of the radian to the angle occupied by the single tooth shoe has a large influence on the air gap flux density harmonic wave. When G/H is more than or equal to 0.4, the radian of the curve tangent plane 43 is larger, so that the air gap length transition of the inner surface of the stator 4 is more uniform, the uniformity of the air gap flux guide of the magnetic circuit is improved, the air gap flux density and counter potential waveform are improved, the harmonic wave duty ratio is reduced, and the vibration noise of the motor is reduced. However, when G/H is greater than 0.7, the radian angle of the curve tangent plane 43 is too large, and the magnetic flux is excessively concentrated at the center line of the tooth shoe of the stator 4, so that the air gap density is too high, the waveform distortion of the air gap density is serious, the harmonic wave duty ratio is increased, and the vibration noise of the motor is increased. Thus, preferably, 0.7.gtoreq.G/H.gtoreq.0.4.
Further, in this embodiment, the number of slots on the stator is Q, the radian of the curve section 43 is G/2, the included angle between the line of any point of the curve and the line of the curve connection point is θ2, and the line of any point of the curve is the line of any point on the curve section and the center of the circle of the stator 4; the connecting line of the curve connecting point is the connecting line of the T connecting point and the center of the stator 1, the T connecting point is the connecting point of the middle surface and the curve tangential surface, namely G/2 is more than theta 2 and more than 0 degrees, wherein the stator 4 is concentric with the rotor, the theta 2 gradually becomes larger in the process of changing the edge cutting edge of the stator 4 along the curve, and the curve tangential surface 43 starts to change along the curve from the point T until the curve is coincident with the edge line of the tooth shoe of the stator 4. The distance between any point on the curve section 43 and the center of the circle of the stator 4 is the trimming diameter R4 of the stator 4. That is, the stator 4 trimmed diameter R4 gradually becomes larger in the course of changing along the curve from the T point, and the stator 4 trimmed diameter R4 and the inner radius (i.e., radius of the intermediate surface) R3 of the stator 4 satisfy the following relationship:
wherein->
The change of the air gap flux guide of the motor is more uniform, the sine degree of the air gap flux density waveform is improved, the harmonic duty ratio and the torque pulsation are reduced, the vibration noise and the harmonic loss of the motor are also reduced, and the motor efficiency is improved.
Wherein Q is more than or equal to 4. In this embodiment, q=12.
It will be appreciated that, at the position where neither the stator 4 nor the magnet steel 2 is trimmed, the air gap is minimum, the air gap length is D, and the air gap length gradually increases from the position where the air gap is minimum to move clockwise or counterclockwise along the surface of the magnet steel 2 of the rotor.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. The tangential motor rotor is characterized by comprising an outer surface facing a stator (4), wherein the outer surface is provided with a trimming structure which is arranged corresponding to magnetic steel (2) in the tangential motor rotor;
the trimming structure of the outer surface is an eccentric cambered surface (12) connected with the whole cambered surface (11) of the outer surface, and the eccentric cambered surface (12) is bent towards the inner side of the tangential motor rotor;
the eccentric cambered surface (12) and the integral cambered surface (11) are in smooth transition;
the number of the magnetic pole pairs of the motor is P, the radian of the eccentric cambered surface (12) is A, and the connection line between any eccentric point and any eccentric connection point isThe included angle is set to be theta 1, the connecting line of any eccentric point is the connecting line of any point on the eccentric cambered surface and the circle center of the tangential motor rotor, the connecting line of the eccentric connecting point is the connecting line of the E connecting point and the circle center of the tangential motor rotor, and the E connecting point is the connecting point of the integral cambered surface (11) and the eccentric cambered surface; the distance between any point on the eccentric cambered surface (12) and the circle center of the tangential motor rotor is an eccentric diameter R2, and the radius R1 of the eccentric diameter R2 and the integral cambered surface (11) meets the following relation:
wherein->
2. Tangential motor rotor according to claim 1, characterized in that the arc of the eccentric arc surface (12) is bigger the closer to the pole parting line of the magnet steel (2).
3. Tangential motor rotor according to claim 1, characterized in that the arc of the eccentric arc surface (12) is a and the angle occupied by the single pole of the tangential motor rotor is F;
0.95≥A/F≥0.7。
4. tangential motor rotor according to claim 1, characterized in that the magnetic steel grooves of the tangential motor rotor have openings (13) arranged towards the outside of the tangential motor rotor, the width L of which openings is smaller than the width M of the magnetic steel grooves.
5. Tangential motor rotor according to claim 4, characterized in that the openings (13) are symmetrically arranged with respect to the centre line of the magnetic steel groove.
6. The tangential motor rotor of claim 4 or 5, wherein 0.6-0.5.
7. The tangential motor rotor according to claim 4, wherein a theoretical thickness of the opening (13) corresponding to a center line of the magnetic steel groove is set to be U, and thicknesses of both sides of the opening (13) are set to be V;
1.2≥U/V≥1.1。
8. a tangential motor comprising a tangential motor rotor and a stator, wherein the tangential motor rotor is as defined in any one of claims 1-7.
9. The tangential motor of claim 8, wherein the teeth shoes of the stator have inner sides facing the rotor of the tangential motor, and both sides of the inner sides have cut edge structures symmetrically disposed along a center line thereof.
10. A tangential motor according to claim 9, wherein the cut edge structure of the inner side surface is a curved cut surface (43) provided on both sides of the middle surface of the inner side surface, the curved cut surface (43) being curved towards the inner side of the stator.
11. A tangential motor according to claim 10, wherein the curve section (43) has an arc of G/2 and the individual teeth shoes of the stator occupy an angle of H;
0.7≥G/H≥0.4。
12. a tangential motor according to any of claims 10-11, wherein the number of slots in the stator is Q and the curvature of the curved tangential plane (43) is G/2; the included angle between the curve arbitrary point connecting line and the curve connecting point connecting line is set as theta 2, the curve arbitrary point connecting line is a connecting line of any point on the curve tangential plane and the circle center of the stator (1), the curve connecting point connecting line is a connecting line of a T connecting point and the circle center of the stator (1), and the T connecting point is a connecting point of the middle plane and the curve tangential plane; any one of the curve sections (43)The distance between the point and the center of the stator is a stator trimming diameter R4, and the stator trimming diameter R4 and the inner circle radius R3 of the stator satisfy the following relation:
wherein the method comprises the steps of
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| CN201710676598.XA CN107222046B (en) | 2017-08-09 | 2017-08-09 | Tangential motor and tangential motor rotor |
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| CN107222046B true CN107222046B (en) | 2023-07-07 |
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| CN201710676598.XA Active CN107222046B (en) | 2017-08-09 | 2017-08-09 | Tangential motor and tangential motor rotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107994748A (en) * | 2017-12-11 | 2018-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure and there is its motor |
| CN108039785B (en) * | 2017-12-11 | 2020-03-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and motor |
| CN112421924B (en) * | 2020-11-09 | 2021-09-10 | 广东威灵电机制造有限公司 | Motor and household appliance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1420499A1 (en) * | 2002-11-15 | 2004-05-19 | Minebea Co., Ltd. | Rotor with embedded permanent magnets |
| CN102751833A (en) * | 2012-07-19 | 2012-10-24 | 浙江大学 | Totally-enclosed permanent-magnet synchronous traction motor with unequal air gaps, skewed pole shoes and tangential magnetic circuit |
| CN103259356A (en) * | 2013-05-13 | 2013-08-21 | 广东威灵电机制造有限公司 | Rotor of permanent magnet motor |
| CN103259351A (en) * | 2013-05-13 | 2013-08-21 | 广东威灵电机制造有限公司 | Permanent magnet motor |
| CN106208587A (en) * | 2016-09-26 | 2016-12-07 | 威灵（芜湖）电机制造有限公司 | Rotor core, rotor and self-starting permanent magnet synchronous motor |
| CN207368769U (en) * | 2017-08-09 | 2018-05-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Tangential motor and tangential rotor |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1420499A1 (en) * | 2002-11-15 | 2004-05-19 | Minebea Co., Ltd. | Rotor with embedded permanent magnets |
| CN102751833A (en) * | 2012-07-19 | 2012-10-24 | 浙江大学 | Totally-enclosed permanent-magnet synchronous traction motor with unequal air gaps, skewed pole shoes and tangential magnetic circuit |
| CN103259356A (en) * | 2013-05-13 | 2013-08-21 | 广东威灵电机制造有限公司 | Rotor of permanent magnet motor |
| CN103259351A (en) * | 2013-05-13 | 2013-08-21 | 广东威灵电机制造有限公司 | Permanent magnet motor |
| CN106208587A (en) * | 2016-09-26 | 2016-12-07 | 威灵（芜湖）电机制造有限公司 | Rotor core, rotor and self-starting permanent magnet synchronous motor |
| CN207368769U (en) * | 2017-08-09 | 2018-05-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Tangential motor and tangential rotor |
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