CN209786894U - magnetic pole module, rotor, skewed pole type motor and wind generating set - Google Patents
magnetic pole module, rotor, skewed pole type motor and wind generating set Download PDFInfo
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- CN209786894U CN209786894U CN201920718417.XU CN201920718417U CN209786894U CN 209786894 U CN209786894 U CN 209786894U CN 201920718417 U CN201920718417 U CN 201920718417U CN 209786894 U CN209786894 U CN 209786894U
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Abstract
The embodiment of the application provides a magnetic pole module, a rotor, a skewed pole type motor and a wind generating set, wherein the magnetic pole module is arranged on a magnet mounting surface of a magnet yoke of the rotor, and a magnetic pole center line of the magnetic pole module deflects for a target angle relative to a central axis of the magnet yoke. The magnetic pole module includes: a base and a magnet; the length direction of the base extends along the first datum line, the magnet is arranged on the mounting surface of the base, a first included angle is formed between the magnetic pole center line of the magnet and the first datum line, and the first included angle is smaller than a target angle. The base further comprises a radial positioning surface, the radial positioning surface is back to back with the mounting surface and is used for being attached to the magnet mounting surface of the magnet yoke. The radial positioning surface is an arc surface, and the axis of the side surface of the cylinder to which the radial positioning surface belongs is parallel to the first datum line. When the magnetic pole module is applied to the oblique pole type motor, the length direction of the base only needs to deflect an angle value smaller than a target angle relative to the central axis of the magnetic yoke, and the loss of the air gap width value of the oblique pole type motor can be remarkably reduced.
Description
[ technical field ] A method for producing a semiconductor device
the application relates to the technical field of motors, in particular to a magnetic pole module, a rotor, a skewed pole motor and a wind generating set.
[ background of the invention ]
Motors can be classified into a slant pole type motor and a direct pole type motor according to the positional relationship between the magnetic pole center line of the magnet and the central axis of the motor. In a skewed pole machine, the pole center line of the magnet is deflected by a target angle relative to the central axis of the machine, which is actually the desired pole deflection angle for the skewed pole machine; in a direct pole machine, the pole center line is parallel to the central axis of the machine.
In the prior art, a magnet is generally disposed on a base to form a pole module, the length direction of the magnet is parallel to the length direction of the base, and the base is mounted on the inner circumferential surface (or outer circumferential surface) of a yoke. When the magnetic pole module is applied to a skewed pole type motor, in order to ensure that the magnetic pole center line of the magnet deflects by a target angle relative to the central axis of the motor, the length direction of the base needs to deflect by the target angle relative to the axial direction of the magnetic yoke. Since the inner circumferential surface (or outer circumferential surface) of the base mounted on the yoke is a circular arc surface, the larger the target angle of the longitudinal direction of the base with respect to the axial deflection of the yoke, the closer the magnet is to the rotor in the radial direction, which may cause a loss of the air gap width value between the rotor and the stator.
In summary, the technical problem that the application of the magnetic pole module to the oblique pole type motor in the prior art easily causes the loss of the air gap width value exists.
[ Utility model ] content
An object of the application is to provide a magnetic pole module, rotor, oblique polar motor and wind generating set for solve the magnetic pole module that exists among the prior art and be applied to oblique polar motor and easily cause the technical problem of air gap width value loss.
In a first aspect, embodiments of the present application provide a magnetic pole module, where the magnetic pole module is disposed on a magnet mounting surface of a yoke of a rotor, and a magnetic pole center line of the magnetic pole module is offset by a target angle with respect to a central axis of the yoke. The magnetic pole module includes: a base and a magnet; the length direction of the base extends along the first datum line, the magnet is arranged on the mounting surface of the base, a first included angle is formed between the magnetic pole center line of the magnet and the first datum line, and the first included angle is smaller than a target angle. The base further comprises a radial positioning surface, the radial positioning surface is back to back with the mounting surface and is used for being attached to the magnet mounting surface of the magnet yoke. The radial positioning surface is an arc surface, and the axis of the side surface of the cylinder to which the radial positioning surface belongs is parallel to the first datum line.
In a second aspect, an embodiment of the present application provides a rotor, including a magnetic yoke, a plurality of pressing bars, and a plurality of magnetic pole modules provided in the first aspect of the embodiment of the present application; the magnet mounting surfaces of the magnet yokes where the plurality of pressing bars are arranged at intervals along the circumferential direction; the length direction of each pressing strip extends along a second reference line, and a second included angle is formed between the second reference line and the central axis of the magnetic yoke; the sum of the first included angle and the second included angle is equal to the target angle; a magnetic pole module is arranged between two adjacent press strips, two sides of the base of the magnetic pole module are respectively attached to the two adjacent press strips in the circumferential direction of the magnetic yoke, and the first datum line is parallel to the second datum line.
in a third aspect, embodiments of the present application provide a skewed pole motor, which is a skewed pole generator or a skewed pole motor, and includes a rotor provided in the second aspect of the embodiments of the present application.
in a fourth aspect, an embodiment of the present application provides a wind turbine generator system, including the skewed pole generator provided in the third aspect of the embodiment of the present application.
compared with the prior art, the method has the following beneficial technical effects:
When the magnetic pole module provided by the embodiment of the application is applied to the skewed pole type motor, the first datum line in the base and the central axis of the magnetic yoke form a second included angle, and the magnetic pole center line of the magnet and the first datum line in the base form a first included angle, so that the magnetic pole center line of the magnet deflects a target angle relative to the central axis of the motor, only the sum of the angle values of the first included angle and the second included angle needs to be ensured to be equal to the target angle. That is, the length direction of the base only needs to be deflected by the angle of the second included angle with respect to the axial direction of the yoke. Because the angle value of the second included angle is smaller than the target angle, the magnetic pole module provided by the application embodiment is applied to the oblique-pole motor, and the loss of the air gap width value of the oblique-pole motor can be remarkably reduced.
The radial positioning surface is designed to be an arc surface, so that the radial positioning surface can be more matched with the magnet mounting surface of the magnetic yoke, the distance between the magnetic pole module and the magnet mounting surface can be further reduced, and the loss of the air gap width value of the oblique-pole motor can be further reduced. And the radial positioning surface of the base is attached to the magnet mounting surface as much as possible, so that the magnetic resistance of the main magnetic circuit of the magnetic pole can be reduced, and the generation of larger magnetic pressure drop is avoided.
in addition, the inventor of the present application further considers that, when the magnetic pole modules are sequentially arranged on the magnet mounting surface along the circumferential direction of the magnetic yoke, the larger the angle value of the first included angle is, the larger the width dimension of the base is, which may cause the circumferential distance between the magnets in two adjacent magnetic pole modules to increase, which may cause the magnet accommodation amount of the magnet mounting surface to decrease, and decrease the effective utilization rate of the magnet mounting surface. Based on the above consideration, in the magnetic pole module provided in the embodiment of the present application, the angle of the first included angle is set to be smaller than the target angle, so that the width dimension of the base is reduced to a greater extent, and the magnet installation surface has a higher effective utilization rate.
the magnetic pole module that this application embodiment provided can install on the yoke through the layering, and at the in-process of assembly, can install a plurality of layering in the yoke magnet installation face preset the position in advance, then put into the magnetic pole module between two corresponding layering, utilize the layering to fix the magnetic pole module on the yoke to the extrusion of base. The fixing mode greatly facilitates the installation and the disassembly operation of the magnetic pole module, is beneficial to improving the assembly efficiency of the motor, reducing the assembly difficulty and being beneficial to the later maintenance and the replacement of the magnetic pole module.
[ description of the drawings ]
in order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.
Fig. 1 is a schematic structural diagram of a magnetic pole module according to an embodiment of the present disclosure;
FIG. 2 is a disassembled schematic view of FIG. 1 provided by an embodiment of the present application;
FIG. 3 is a left side view of FIG. 1 as provided by an embodiment of the present application;
FIG. 4 is a disassembled schematic view of FIG. 3 provided by an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a rotor provided in an embodiment of the present application;
FIG. 6 is a right side view of FIG. 5 provided by an embodiment of the present application;
FIG. 7 is an enlarged view of a portion of FIG. 6 at H in accordance with an exemplary embodiment of the present disclosure;
In the figure:
100-pole module; 1-a base; 101-a mounting surface;
1011-first edge line; 102-a radial locating surface; 11-a substrate; 12-a boss;
2-a magnet; 21-magnetic steel; 201-bottom surface edge line;
200-pressing strips; 3-layering the main body; 4-layering wing plates;
300-magnetic yoke.
[ detailed description ] embodiments
reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The embodiment of the present application provides a magnetic pole module 100, as shown in fig. 1 to 4, the magnetic pole module 100 is disposed on a magnet mounting surface of a yoke 300 of a rotor, and a magnetic pole center line of the magnetic pole module 100 is offset by a target angle with respect to a central axis of the yoke 300. The magnetic pole module 100 includes: a base 1 and a magnet 2. The length direction of the base 1 extends along a first reference line, the magnet 2 is arranged on the mounting surface 101 of the base 1, and a magnetic pole center line of the magnet 2 and the first reference line form a first included angle which is smaller than a target angle. The base 1 further comprises a radial positioning surface 102, the radial positioning surface 102 being opposite to the mounting surface 101 for fitting to the magnet mounting surface of the yoke 300. The radial positioning surface 102 is an arc surface, and an axis of a side surface of the cylinder to which the radial positioning surface 102 belongs is parallel to the first reference line.
Those skilled in the art will appreciate that the central axis of the yoke 300 is, in fact, the central axis of the motor to which the yoke 300 belongs. The magnetic pole center line is a virtual line, the magnetic pole center line is a center line parallel to the longitudinal direction of the magnet 2, and the straight line N in fig. 1 represents the magnetic pole center line of the magnet 2. The first reference line may be a virtual line or a solid side line for characterizing the length extension direction of the base 1, the top view of the base 1 is shown in fig. 1, the outline of the base 1 in the top view direction is a rectangle, the first reference line may be a long side of the rectangle or a center line parallel to the length direction of the base 1, and the straight line P in fig. 1 represents the first reference line in the base 1. An angle A formed by the straight line N and the straight line P is a first included angle.
The magnet mounting surface is a circular arc surface. For the outer rotor, the magnet mounting surface is the inner circumferential surface of the yoke 300; for the inner rotor, the magnet mounting surface is the outer peripheral surface of the yoke 300. It should be noted that the cylinder to which the radially oriented surface 102 of the base 1 belongs is virtual and is introduced to illustrate that the radially oriented surface 102 of the base 1 can be analogized to a portion of the side of the cylinder.
The target angle at which the magnetic pole center line of the magnetic pole module 100 is deflected with respect to the central axis of the yoke 300 means a desired magnetic pole deflection angle of the skewed pole motor when the magnetic pole module 100 is applied to the skewed pole motor.
When the magnetic pole module 100 provided by the embodiment of the application is applied to a skewed pole motor, the first reference line in the base 1 and the central axis of the magnetic yoke 300 form a second included angle, and since the magnetic pole center line of the magnet 2 already forms a first included angle with the first reference line of the base 1, in order to ensure that the magnetic pole center line of the magnet 2 deflects a target angle relative to the central axis of the motor, it is only required to ensure that the sum of the angle values of the first included angle and the second included angle is equal to the target angle. That is, the longitudinal direction of the base 1 only needs to be deflected by the angle of the second included angle with respect to the axial direction of the yoke 300. Since the angle value of the second included angle is smaller than the target angle, the magnetic pole module 100 provided in the embodiment of the present application is applied to the skewed pole motor, and the loss amount of the air gap width value of the skewed pole motor can be significantly reduced.
The radial positioning surface 102 is designed to be an arc surface, so that the radial positioning surface 102 can be more matched with the magnet mounting surface of the magnetic yoke 300, the distance between the magnetic pole module 100 and the magnet mounting surface can be further reduced, and the loss of the air gap width value of the oblique pole type motor can be further reduced. In addition, the radial positioning surface 102 of the base 1 is attached to the magnet mounting surface as much as possible, so that the magnetic resistance of the main magnetic circuit of the magnetic pole can be reduced, and the generation of large magnetic pressure drop can be avoided.
in addition, the inventor of the present application further considers that, when the magnetic pole modules 100 are sequentially arranged on the magnet mounting surface along the circumferential direction of the magnetic yoke 300, the larger the angle value of the first included angle is, the larger the width dimension of the base 1 is, which may cause the circumferential distance between the magnets 2 in two adjacent magnetic pole modules 100 to increase, which may cause the accommodation amount of the magnets 2 on the magnet mounting surface to decrease, and may reduce the effective utilization rate of the magnet mounting surface. In view of the above, in the magnetic pole module 100 provided in the embodiment of the present application, the angle of the first included angle is set to be smaller than the target angle, so that the width dimension of the base 1 is reduced to a greater extent, and the magnet installation surface has a higher effective utilization rate.
The magnetic pole module 100 provided by the embodiment of the application can be installed on the magnetic yoke 300 through the pressing strips, in the assembling process, a plurality of pressing strips can be installed at the preset position of the magnet installation surface in the magnetic yoke 300 in advance, then each magnetic pole module 100 is placed between two corresponding pressing strips, and the magnetic pole module 100 is fixed on the magnetic yoke 300 by utilizing the pressing strips to extrude the base. The fixing mode greatly facilitates the installation and the disassembly operation of the magnetic pole module 100, is beneficial to improving the assembly efficiency of the motor, reducing the assembly difficulty and being beneficial to the later maintenance and the replacement of the magnetic pole module 100.
Alternatively, in the magnetic pole module 100 provided in the embodiment of the present application,
when the magnetic pole module 100 is mounted on the magnet mounting surface of the magnetic yoke 300, since the length direction of the base 1 needs a deflection angle value (for example, an angle value of the second included angle described above) relative to the axial direction of the magnetic yoke 300, in order to ensure that the radial positioning surface 102 of the base 1 fits the magnet mounting surface as much as possible, a radius value of the radial positioning surface 102 should be set according to specific conditions, and specifically, for the magnetic pole module 100 applied to the outer rotor, the radius of the cylindrical side surface to which the radial positioning surface 102 belongs is smaller than the radius of the magnet mounting surface of the magnetic yoke 300; for a pole module 100 for an inner rotor, the radius of the cylindrical side surface to which the radial positioning surface 102 belongs is smaller than the radius of the magnet mounting surface of the yoke 300.
Alternatively, the bottom surface of the base 1 may be machined by turning or the like, which helps to reduce the manufacturing cost.
The inventors of the present application have considered that, in the magnetic pole module 100 provided in the embodiment of the present application, since the magnetic pole center line of the magnet 2 needs to form the first angle with the first reference line, the position and orientation of the magnet 2 need to be precisely adjusted during the assembly of the magnetic pole module 100, which greatly increases the difficulty of the assembly of the magnetic pole module 100.
In view of the above, optionally, in the magnetic pole module 100 provided in the embodiment of the present application, the base 1 includes a substrate 11 and a boss 12 attached to the substrate 11. The mounting surface 101 is a top surface of the boss 12, and the radial positioning surface 102 is a bottom surface of the substrate 11. The mounting surface 101 includes two first edge lines 1011 parallel to the length direction of the boss 12, and the first edge lines 1011 form a first angle with the first reference line. Two bottom surface edge lines 201 of the bottom surface of the magnet 2 are aligned with two first edge lines 1011 of the mounting surface 101, respectively, and the bottom surface edge lines 201 are parallel to the magnetic pole center line. The substrate 11 is outside the two first edge lines 1011 of the boss 12, beyond the boss 12.
taking fig. 2 as an example, mounting surface 101 in fig. 2 is rectangular, and first edge line 1011 of mounting surface 101 is the long side of the rectangle. The magnet 2 in fig. 2 includes a plurality of magnetic steels 21, the magnetic steels 21 are substantially rectangular parallelepiped, and the bottom edge line 201 of the magnet 2 is a side line perpendicular to the length direction of the magnetic steels 21 in the bottom of each magnetic steel 21. The length direction of the magnetic steel 21 is perpendicular to the first edge lines 1011 of the mounting surface 101, and the distance between the two first edge lines 1011 is equal to the length of the magnetic steel 21.
Because the two first edge lines 1011 of the mounting surface 101 of the boss 12 form the first included angle with the first reference line, when the magnet 2 is mounted on the mounting surface 101, the magnetic pole center line of the magnet 2 and the first reference line can form the first included angle only by ensuring that the two bottom surface edge lines 201 of the bottom surface of the magnet 2 are respectively aligned with the corresponding first edge lines 1011. Therefore, the boss 12 is equivalent to a positioning reference in the installation process of the magnet 2, so that the assembly difficulty of the magnetic pole module 100 is effectively reduced, and the assembly efficiency is improved.
Alternatively, in the magnetic pole module 100 provided in the embodiment of the present application, the substrate 11 and the boss 12 may be integrally formed. For example, the susceptor 1 is rectangular plate-shaped before being machined, and a material in a region near the side of the top surface of the susceptor 1 is removed by using a milling machine or a machining center to form a boss 12, and a portion below the boss 12 is the substrate 11.
Alternatively, the substrate 11 and the boss 12 are originally independent components, and the substrate 11 and the boss 12 are connected together by adhesion or welding, or the substrate 11 and the boss 12 are connected together by a connecting member (e.g., a bolt).
Alternatively, the base plate 11 and the boss 12 may be made of soft magnetic material with good magnetic permeability, such as low carbon steel, silicon steel, or electrical iron.
Alternatively, in the magnetic pole module 100 provided in the embodiment of the present application, the magnet 2 includes a plurality of magnetic steels 21, and the plurality of magnetic steels 21 are arranged in a row along the direction of the magnetic pole center line and are disposed on the mounting surface 101.
In fig. 1 and 2, the magnetic steel 21 is substantially rectangular, the side faces of two adjacent magnetic steels 21 are attached, and the center line of the magnetic pole of the magnet 2 coincides with the center line of each magnetic steel 21 parallel to the width direction of the magnetic steel 21. Alternatively, the material of the magnetic steel 21 may be a neodymium iron boron permanent magnet material or a ferrite permanent magnet material.
Based on the same inventive concept, the present embodiment also provides a rotor, as shown in fig. 5 and 6, including a yoke 300, a plurality of beads 200, and a plurality of magnetic pole modules 100 provided by the present embodiment.
the plurality of pressing strips 200 are arranged on the magnet mounting surface of the magnet yoke 300 at intervals along the circumferential direction, the length direction of each pressing strip 200 extends along a second reference line, and the second reference line and the central axis of the magnet yoke 300 form a second included angle. The sum of the first included angle and the second included angle is equal to the target angle. A magnetic pole module 100 is arranged between two adjacent press strips 200, two sides of the base 1 of the magnetic pole module 100 are respectively attached to the two adjacent press strips 200 in the circumferential direction of the magnetic yoke 300, and the first datum line is parallel to the second datum line.
It will be understood by those skilled in the art that a portion of the structure of the rotor is shown in fig. 5 and 6, a projection of the portion of the structure in the axial direction of the rotor is shown in fig. 5, and a projection of the portion of the structure in the radial direction of the rotor is shown in fig. 6.
It should be noted that the central axis of the yoke 300 is actually the central axis of the motor to which the yoke 300 belongs. The target angle is an angle at which the magnetic pole center line of the magnetic pole module 100 is offset with respect to the center axis of the yoke 300 in the skewed pole motor to which the rotor belongs, i.e., a desired magnetic pole skew angle of the skewed pole motor.
The second reference line may be a virtual line or a solid side line for characterizing the length extending direction of the molding strip 200, the bottom surface of the molding strip 200 in fig. 5 is a rectangle, the first reference line may be a long side of the rectangle or a center line parallel to the length direction, and the straight line M in fig. 5 represents the second reference line in the molding strip 200.
In fig. 5, a line N indicates a pole center line of the magnet 2, a line P indicates a first reference line of the base, and a line L indicates a central axis of the yoke 300. The straight lines L, M and N are not necessarily at the positions shown in the drawings, and in order to more clearly show the relationship between the straight lines, the straight lines are translated to the same position, and those skilled in the art can understand that the included angle relationship between the translated straight lines is not changed. The straight line N forms an included angle A with the straight line P, the straight line P forms an included angle B with the straight line L, and the straight line L forms an included angle C with the straight line N.
In the magnetic pole module 100, the center line of the magnetic pole of the magnet 2 forms a first included angle with the first reference line of the base 1, and since the two sides of the base 1 of the magnetic pole module 100 are respectively attached to the two adjacent press strips 200 in the circumferential direction of the magnetic yoke 300, the first reference line is parallel to the second reference line, that is, the first reference line of the base 1 in the magnetic pole module 100 forms a second included angle with the center line of the magnetic yoke 300, that is, the angle B in fig. 5. Since the first reference line of the base 1 in the pole module 100 forms the first angle with the pole center line of the magnet 2, the angle of the angle formed by the pole center line of the magnet 2 in the pole module 100 and the central axis of the yoke 300 is the sum of the first angle and the second angle, i.e., the target angle (the value of the angle C in fig. 5).
alternatively, in the rotor provided in the embodiment of the present application, the bead 200 includes the bead main body 3, and two bead wings 4. The two pressing strip wing plates 4 are respectively arranged on two sides of the pressing strip main body 3 in the length direction, and the length direction of the pressing strip wing plates 4 is parallel to the length direction of the pressing strip main body 3. The top surface of the molding main body 3 is attached to the magnet mounting surface of the yoke 300, and the molding wing plate 4 is away from the top surface of the molding main body 3 in the radial direction of the yoke 300. Both side surfaces of base plate 11 of magnetic pole module 100 are respectively bonded to the side surfaces of two adjacent bead main bodies 3 in the circumferential direction of yoke 300. The top surfaces of the portions of the base plate 11 of the magnetic pole module 100, which exceed the bosses 12, are respectively attached to the pressing strip wing plates 4 of two adjacent pressing strips 200 in the radial direction of the magnetic yoke 300.
In the embodiment of the present application, the cross section of the pressing strip 200 perpendicular to the length direction thereof is substantially T-shaped, the pressing strip main body 3 is a vertical side of the T-shape, and the two pressing strip wing plates 4 are transverse sides of the T-shape.
In the embodiment of the present application, the pressing bar 200 may be previously installed, and then the magnetic pole module 100 may be installed. As shown in fig. 7, the contact surface of the pressing bar 200 and the magnetic yoke 300 is the top surface of the pressing bar main body 3, after the pressing bar 200 is installed on the magnet installation surface, a gap exists between the pressing bar wing plate 4 and the magnet installation surface, the part of the substrate 11 of the magnetic pole module 100, which exceeds the boss 12, is aligned to the port of the gap, and the magnetic pole module 100 is pushed into the gap between the two pressing bars 200 along the axial direction of the magnetic yoke 300, so that the installation of the magnetic pole module 100 can be completed.
alternatively, in the rotor provided in the embodiment of the present application, a plurality of mounting holes (not shown in the drawings) are provided on the magnet mounting surface of the yoke 300. The plurality of mounting holes are divided into a plurality of rows along the circumferential direction of the magnetic yoke 300, and a line connecting the central points of all the mounting holes in each row of mounting holes forms a second included angle with the central axis of the motor. The compression beads 200 are attached to the magnet mounting surface of the yoke 300 through the corresponding row of mounting holes.
Optionally, each row of mounting holes includes a pin hole and a threaded hole, and the molding 200 is provided with the pin hole and the threaded through hole. The pin penetrates through a pin hole on the pressing strip 200 and is placed into a corresponding pin hole on the magnet yoke 300, so that the positioning precision of the pressing strip 200 is ensured; screws penetrate through threaded through holes in the hold-down strip 200 and are screwed into corresponding threaded holes in the magnetic yoke 300, so that the hold-down strip 200 is fixedly connected with the magnet mounting surface.
alternatively, the magnet mounting surface of the yoke 300 may be machined by turning or the like, which helps to reduce the manufacturing cost.
Based on the same inventive concept, the embodiment of the application also provides a skewed pole type motor, the skewed pole type motor is a skewed pole type generator or a skewed pole type motor, and the skewed pole type motor comprises the rotor provided by the embodiment of the application.
Based on the same inventive concept, the embodiment of the application also provides a wind generating set, which comprises the oblique pole type generator provided by the embodiment of the application.
By applying the embodiment of the application, at least the following technical effects are achieved:
When the magnetic pole module provided by the embodiment of the application is applied to the skewed pole type motor, the first datum line in the base and the central axis of the magnetic yoke form a second included angle, and the magnetic pole center line of the magnet and the first datum line in the base form a first included angle, so that the magnetic pole center line of the magnet deflects a target angle relative to the central axis of the motor, only the sum of the angle values of the first included angle and the second included angle needs to be ensured to be equal to the target angle. That is, the length direction of the base only needs to be deflected by the angle of the second included angle with respect to the axial direction of the yoke. Because the angle value of the second included angle is smaller than the target angle, the magnetic pole module provided by the application embodiment is applied to the oblique-pole motor, and the loss of the air gap width value of the oblique-pole motor can be remarkably reduced.
The radial positioning surface is designed to be an arc surface, so that the radial positioning surface can be more matched with the magnet mounting surface of the magnetic yoke, the distance between the magnetic pole module and the magnet mounting surface can be further reduced, and the loss of the air gap width value of the oblique-pole motor can be further reduced. And the radial positioning surface of the base is attached to the magnet mounting surface as much as possible, so that the magnetic resistance of the main magnetic circuit of the magnetic pole can be reduced, and the generation of larger magnetic pressure drop is avoided.
In addition, the inventor of the present application further considers that, when the magnetic pole modules are sequentially arranged on the magnet mounting surface along the circumferential direction of the magnetic yoke, the larger the angle value of the first included angle is, the larger the width dimension of the base is, which may cause the circumferential distance between the magnets in two adjacent magnetic pole modules to increase, which may cause the magnet accommodation amount of the magnet mounting surface to decrease, and decrease the effective utilization rate of the magnet mounting surface. Based on the above consideration, in the magnetic pole module provided in the embodiment of the present application, the angle of the first included angle is set to be smaller than the target angle, so that the width dimension of the base is reduced to a greater extent, and the magnet installation surface has a higher effective utilization rate.
the magnetic pole module that this application embodiment provided can install on the yoke through the layering, and at the in-process of assembly, can install a plurality of layering in the yoke magnet installation face preset the position in advance, then put into the magnetic pole module between two corresponding layering, utilize the layering to fix the magnetic pole module on the yoke to the extrusion of base. The fixing mode greatly facilitates the installation and the disassembly operation of the magnetic pole module, is beneficial to improving the assembly efficiency of the motor, reducing the assembly difficulty and being beneficial to the later maintenance and the replacement of the magnetic pole module.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
in the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (9)
1. A magnetic pole module provided to a magnet mounting surface of a yoke (300) of a rotor, characterized in that a magnetic pole center line of the magnetic pole module is deflected by a target angle with respect to a center axis of the yoke (300); the magnetic pole module includes: a base (1) and a magnet (2);
The length direction of the base (1) extends along a first datum line, the magnet (2) is arranged on the mounting surface (101) of the base (1), a magnetic pole center line of the magnet (2) and the first datum line form a first included angle, and the first included angle is smaller than the target angle;
The base (1) further comprises a radial positioning surface (102); the radial positioning surface (102) is opposite to the mounting surface (101) and is used for being attached to a magnet mounting surface of the magnetic yoke (300); the radial positioning surface (102) is an arc surface, and the axis of the cylindrical side surface to which the radial positioning surface (102) belongs is parallel to the first datum line.
2. The pole module according to claim 1, characterized in that, for the pole module applied to an outer rotor, the radius of the cylindrical side to which the radial positioning surface (102) belongs is smaller than the radius of the magnet mounting surface of the magnet yoke (300);
for the pole modules applied to the inner rotor, the radius of the cylindrical side surface to which the radial positioning surface (102) belongs is smaller than the radius of the magnet mounting surface of the magnet yoke (300).
3. A pole module according to claim 2, characterized in that the base (1) comprises a base plate (11) and a boss (12) fitted to the base plate (11);
The mounting surface (101) is the top surface of the boss (12) far away from the substrate (11); the radial positioning surface (102) is the bottom surface of the base plate (11) far away from the boss (12);
The mounting surface (101) comprises two first edge lines (1011) parallel to the length direction of the boss (12), and the first edge lines (1011) and the first reference line form the first included angle; two bottom surface edge lines (201) of the bottom surface of the magnet (2) respectively aligned with the two first edge lines (1011) of the mounting surface (101), the bottom surface edge lines (201) being parallel to the magnetic pole center lines;
The substrate (11) is outside the two first edge lines (1011) of the boss (12) beyond the boss (12).
4. a pole module according to claim 3, characterized in that the base plate (11) and the boss (12) are integrally formed; or the base plate (11) and the boss (12) are connected by at least one of the following modes: sticking, welding and connecting through a connecting piece.
5. A rotor, characterized by comprising a yoke (300), a plurality of beads (200), and a plurality of pole modules according to any one of claims 1-4;
The pressing strips (200) are arranged on the magnet mounting surface of the magnetic yoke (300) at intervals along the circumferential direction; the length direction of each pressing strip (200) extends along a second reference line, and a second included angle is formed between the second reference line and the central axis of the magnetic yoke (300); the sum of the first included angle and the second included angle is equal to the target angle;
The magnetic pole module is arranged between two adjacent pressing strips (200), two sides of the base (1) of the magnetic pole module are respectively attached to the two adjacent pressing strips (200) in the circumferential direction of the magnetic yoke (300), and the first datum line is parallel to the second datum line.
6. The rotor as recited in claim 5, characterized in that the bead (200) comprises a bead body (3) and two bead wings (4); the two pressing strip wing plates (4) are respectively arranged on two sides of the pressing strip main body (3) in the length direction, and the length direction of the pressing strip wing plates (4) is parallel to the length direction of the pressing strip main body (3); the top surface of the pressing strip main body (3) is connected to the magnet mounting surface of the magnetic yoke (300), and the pressing strip wing plate (4) is far away from the top surface of the pressing strip main body (3) along the radial direction of the magnetic yoke (300);
two side surfaces of a base plate (11) of the base (1) are respectively attached to the side surfaces of the batten main bodies (3) of two adjacent battens (200) in the circumferential direction of the magnet yoke (300); the top surface of the part, exceeding the boss (12) of the base (1), of the base plate (11) is respectively attached to the pressing strip wing plates (4) of two adjacent pressing strips (200) in the radial direction of the magnet yoke (300).
7. The rotor as recited in claim 5, characterized in that the magnet mounting surface of the yoke (300) is provided with a plurality of mounting holes;
the plurality of mounting holes are divided into a plurality of rows along the circumferential direction of the magnetic yoke (300); the connecting line of the central points of all the mounting holes in each row of mounting holes and the central axis of the magnet yoke form the second included angle; the pressing strips (200) are connected to the magnet mounting surfaces of the magnet yoke (300) through the mounting holes in the corresponding rows.
8. A skewed pole machine, being a skewed pole generator or a skewed pole motor, comprising a rotor according to any of claims 5-7.
9. A wind power plant comprising a skewed pole generator according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920718417.XU CN209786894U (en) | 2019-05-17 | 2019-05-17 | magnetic pole module, rotor, skewed pole type motor and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920718417.XU CN209786894U (en) | 2019-05-17 | 2019-05-17 | magnetic pole module, rotor, skewed pole type motor and wind generating set |
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| CN209786894U true CN209786894U (en) | 2019-12-13 |
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| CN201920718417.XU Active CN209786894U (en) | 2019-05-17 | 2019-05-17 | magnetic pole module, rotor, skewed pole type motor and wind generating set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014013A (en) * | 2019-12-20 | 2021-06-22 | 新疆金风科技股份有限公司 | Rotor support, rotor, motor and wind generating set |
| CN113098216A (en) * | 2019-12-23 | 2021-07-09 | 新疆金风科技股份有限公司 | Magnetic conduction tool, sleeving tool of motor and sleeving method |
| CN113595355A (en) * | 2021-08-27 | 2021-11-02 | 江苏群科智能科技股份有限公司 | Magnetic pole inclined stator for linear motor |
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2019
- 2019-05-17 CN CN201920718417.XU patent/CN209786894U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113014013A (en) * | 2019-12-20 | 2021-06-22 | 新疆金风科技股份有限公司 | Rotor support, rotor, motor and wind generating set |
| CN113014013B (en) * | 2019-12-20 | 2023-06-09 | 新疆金风科技股份有限公司 | Rotor support, rotor, motor and wind generating set |
| CN113098216A (en) * | 2019-12-23 | 2021-07-09 | 新疆金风科技股份有限公司 | Magnetic conduction tool, sleeving tool of motor and sleeving method |
| CN113098216B (en) * | 2019-12-23 | 2023-07-21 | 新疆金风科技股份有限公司 | Magnetic conduction tool, motor sleeving tool and motor sleeving method |
| CN113595355A (en) * | 2021-08-27 | 2021-11-02 | 江苏群科智能科技股份有限公司 | Magnetic pole inclined stator for linear motor |
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