AU2018431391B2 - Permanent magnet motor and modular rotor structure thereof - Google Patents
Permanent magnet motor and modular rotor structure thereof Download PDFInfo
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- AU2018431391B2 AU2018431391B2 AU2018431391A AU2018431391A AU2018431391B2 AU 2018431391 B2 AU2018431391 B2 AU 2018431391B2 AU 2018431391 A AU2018431391 A AU 2018431391A AU 2018431391 A AU2018431391 A AU 2018431391A AU 2018431391 B2 AU2018431391 B2 AU 2018431391B2
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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
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
- H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
-
- 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
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset magnets
-
- 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
- H02K2213/12—Machines characterised by the modularity of some components
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
English translation of PCT/CN2018/103744
ABSTRACT
A modular rotor structure and a permanent magnet motor including the modular rotor
structure are provided according to the application. A modular rotor structure includes a
5 module connecting flange and at least two rotor modules segmented in a circumferential
direction. Each of the rotor modules includes a module magnetic pole, a module magnetic
yoke for mounting the module magnetic pole, a module fixing plate and a module ribbed plate
for detachably connecting adjacent rotor modules. The module ribbed plate is fixedly
connected with the module magnet yoke, the module magnetic yoke is fixedly connected with
10 the module fixing plate, and the module fixing plate is detachably connected with the module
connecting flange. Compared with the conventional technology, the modular rotor structure
according to the present application can realize the modularization of the rotor assembly, and
solve the problem that the high-power motor is limited by the land transportation due to the
excessive outer diameter.
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Description
[0001] The present application claims the priority to Chinese Patent Application No. 201810916513.5, titled "PERMANENT MAGNET MOTOR AND MODULAR ROTOR STRUCTURE THEREOF", filed with the China National Intellectual Property Administration on August 13, 2018, which is incorporated herein by reference in its entirety.
[0002] The present application relates to the technical field of motors, and in particular to a modular rotor structure. In addition, the present application further relates to a permanent magnet motor including the modular rotor structure.
[0003] With the development of motor technology, permanent magnet motors continuously develop toward a direction of high-power, and it is more and more frequent that a low-power model is replaced by a new high-power main model. Especially in recent years, along with the rise of offshore wind power, the trend of upsizing single-machine capacity is more obvious.
[0004] The volume and weight of the motor will inevitably get larger and larger due to the promotion of the motor power, and the accompanying transportation problem is also highlighted. At present, due to the width limitation of land transportation, it is generally required that an outer diameter of a motor does not exceed 5m. Therefore, in a case that the outer diameter of the motor exceeds 5m, the transportation method of the motor will be limited. At the same time, the increase in the outer diameter of the motor will also increase the transportation difficulty during transportation, thereby increasing the transportation cost.
[0005] In the conventional technology, in order to avoid the transportation problem caused by the excessive outer diameter of the motor, it is necessary to control the outer diameter of the high-power motor, and the requirement of the motor to the power is satisfied by using a method of lengthening an axial length of the motor. However, the increase of the axial length of the motor will reduce the utilization rate of the motor material, thereby resulting in an increase in manufacturing cost and a decrease in product competitiveness.
[0006] In summary, a problem to be urgently solved by those skilled in the art at present is how to avoid the width limitation of the land transportation on the outer diameter of the motor while not increasing the manufacturing cost.
[0006A]Reference to any prior art in the specification is not an acknowledgement or suggestion that this prior art forms part of the common general knowledge in any jurisdiction or that this prior art could reasonably be expected to be combined with any other piece of prior art by a skilled person in the art.
[0006B] By way of clarification and for avoidance of doubt, as used herein and except where the context requires otherwise, the term "comprise" and variations of the term, such as "comprising", "comprises" and "comprised", are not intended to exclude further additions, components, integers or steps.
[0007] In view of the above, an object of the present application is to provide a modular rotor structure capable of avoiding the width limitation of land transportation without increasing the manufacturing cost, thereby solving the problem that the high-power motor is limited by the land transportation due to an excessive outer diameter.
[0008] Another object of the present application is to provide a permanent magnet motor including the above rotor structure.
[0009] In order to achieve the above objects, the following technical solutions are provided according to the present application.
[0009A]According to a first aspect of the invention there is provided a modular rotor structure, comprising a module connecting flange and at least two rotor modules segmented in a circumferential direction, wherein each of the at least two rotor modules comprises a module magnetic pole, a module magnetic yoke configured to mount the module magnetic pole, a module fixing plate, and a module ribbed plate configured to detachably connect with adjacent rotor modules; and the module ribbed plate is fixedly connected with the module magnetic yoke, the module magnetic yoke is fixedly connected with the module fixing plate, and the module fixing plate is detachably connected with the module connecting flange; wherein the module fixing plate has a first through hole configured to adjust a relative position of the module fixing plate and the module connecting flange.
[0009B] According to a second aspect of the invention there is provided a permanent magnet motor, comprising a rotor structure, wherein the rotor structure is the modular rotor structure according to the first aspect.
[0010] A modular rotor structure includes a module connecting flange and at least two rotor modules segmented in a circumferential direction. Each of the rotor modules includes a module magnetic pole, a module magnetic yoke for mounting the module magnetic pole, a module fixing plate and a module ribbed plate for detachably connecting adjacent rotor modules. The module ribbed plate is fixedly connected with the module magnet yoke, the module magnetic yoke is fixedly connected with the module fixing plate, and the module fixing plate is detachably connected with the module connecting flange.
[0011] Preferably, one module magnetic yoke includes at least one module-magnetic-pole mounting plane, and angles between all adjacent module-magnetic-pole mounting planes are the same.
[0012] Preferably, all the module-magnetic-pole mounting planes in the module magnetic yoke are equidistant from a center of a modular rotor assembly.
[0013] Preferably, all module-magnetic-pole mounting surfaces in the module magnetic yoke are arc surfaces having a same radius.
[0014] Preferably, all the module-magnetic-pole mounting surfaces in the module magnetic
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yoke are equidistant from the center of the modular rotor assembly.
[0015] Preferably, the module fixing plate has a first through hole for adjusting a relative position of the module fixing plate and the module connecting flange.
[0016] Preferably, the module fixing plate has a pin hole for performing pin-hole align drilling with the module connecting flange.
[0017] Preferably, the module ribbed plate has a second through hole for adjusting a relative position of adjacent rotor modules.
[0018] Preferably, the module magnetic pole has an axially segmented structure.
[0019] A permanent magnet motor includes the modular rotor structure according to anyone of the above.
[0020] Compared with the conventional technology, the modular rotor structure according to the present application can realize the modularization of the rotor assembly, and solve the problem that the high-power motor is limited by the land transportation due to the excessive outer diameter.
[0021] Since the rotor assembly is located outside the permanent magnet motor, the rotor module can be first disassembled during transportation, that is, the connection between the rotor modules and the module connecting flange, and the connection between the adjacent rotor modules are disassembled, and then the motor with the rotor assembly being removed, the rotor modules and rotor-module connecting members are separately transported. In this way, the outer diameter of the motor during the transportation is changed into an outer
diameter of a stator assembly. As long as the outer diameter of the stator assembly is smaller than 5m, the motor can be transported by land transportation, which will not be subjected to the limitation on the outer diameter of the motor during the land transportation.
[0022] After the transportation is finished, the rotor assembly of the motor can be assembled, that is, the connection between the rotor modules and the module connecting flange, and the connection between the adjacent rotor modules are fixed. In addition, to facilitate the transportation of the module magnetic poles, the module magnetic poles may be transported separately, and be mounted after the transportation is finished.
[0023] During the processing and manufacturing of an integrated rotor structure in the conventional technology, the integrated rotor structure is difficult to process and easy to
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deform, and a rejection rate of products is high. The modular rotor structure according to the present application reduces the size of machined parts and the processing difficulty, and the rotor structure is less prone to deformation during the processing, so that a qualified rate of the products is improved, and the manufacturing cost is thereby reduced.
[0024] Therefore, the modular rotor structure according to the present application allows the high-power motor to avoid the width limitation of the land transportation during transportation, and also reduces the manufacturing cost and promotes the market
competitiveness of the products.
[0025] The permanent magnet motor including the above modular rotor structure can be transported after the modular rotor is disassembled, which reduces the outer diameter of the motor during transportation, and avoids the width limitation of the land transportation on the
outer diameter of the motor.
[0026] For more clearly illustrating embodiments of the present application or the technical solutions in the conventional technology, drawings for describing the embodiments or the conventional technology will be briefly described hereinafter. Apparently, the drawings in the following description are only examples of the present application, and for those skilled in the art, other drawings may be obtained based on the provided drawings without any creative efforts.
[0027] Figure 1 is a schematic partial view of a specific embodiment of a permanent magnet motor according to the present application;
[0028] Figure 2 is a schematic structural view of a rotor module shown in Figure 1;
[0029] Figure 3 is a schematic perspective view of a rotor assembly shown in Figure 1;
[0030] Figure 4 is a schematic sectional view of the rotor module shown in Figure 2;
[0031] Figure 5 is a schematic sectional view of a variant structure of the rotor module shown in Figure 2; and
[0032] Figure 6 is a schematic sectional view of another variant structure of the rotor module shown in Figure 2.
English translation of PCT/CN2018/103744
[0033] Reference Numerals in Figures 1 to 6:
1 rotor assembly, 2 stator assembly,
3 air gap, 11 rotor module,
12 module connecting flange, 13 module-mounting positioning pin,
14 module-fixing-plate fastener, 15 module-ribbed-plate fastener,
111 module magnetic yoke, 112 module magnetic pole,
113 module ribbed plate, 114 module fixing plate.
[0034] The technical solutions according to the embodiments of the present application will be described clearly and completely as follows in conjunction with the drawings in the embodiments of the present application. It is apparent that the described embodiments are only a part of the embodiments according to the present application, rather than all the embodiments. Any other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without any creative work fall within the protection scope of the present disclosure.
[0035] An object of the present application is to provide a rotor structure capable of avoiding the width limitation of land transportation on the outer diameter of the motor without increasing the manufacturing cost. Another object of the present application is to provide a permanent magnet motor including the above rotor structure.
[0036] Referring to Figures 1 to 6, Figure 1 is a schematic partial view of a specific embodiment of a permanent magnet motor according to the present application; Figure 2 is a schematic structural view of a rotor module shown in Figure 1; Figure 3 is a schematic perspective view of a rotor assembly shown in Figure 1; Figure 4 is a schematic sectional view of the rotor module shown in Figure 2; Figure 5 is a schematic sectional view of a variant structure of the rotor module shown in Figure 2; and Figure 6 is a schematic sectional view of another variant structure of the rotor module shown in Figure 2.
[0037] A modular rotor structure is provided according to the present application, which includes at least two rotor modules 11 segmented in a circumferential direction. Each of the
English translation of PCT/CN2018/103744
rotor modules 11 includes a module magnetic pole 112, a module magnetic yoke 111, a module ribbed plate 113 and a module fixing plate 114. The module magnetic pole 112 is mounted on the module magnetic yoke 111, the module ribbed plate 113 and the module fixing plate 114 are fixedly connected with the module magnetic yoke 111, the module ribbed plate 113 is configured to detachably connect with adjacent rotor modules 11, and the module fixing plate 114 is detachably connected with the module connecting flange 12.
[0038] The modular rotor structure can be disassembled during the transportation of the motor, that is, the connection between the rotor modules 11 and the module connecting flange 12, and the connection between the adjacent rotor modules 11 are disassembled. In this way, the outer diameter of the motor during the land transportation is changed into an outer
diameter of a stator structure, as long as the outer diameter of the stator structure satisfies the limitation on the outer diameter of the motor during the land transportation. Since the stator structure is located inside the rotor structure, there is an air gap 3 between the stator structure and the rotor structure. Therefore, in a case that the outer diameter of the stator structure of
the motor meets the requirement on the outer diameter of the motor during the land transportation, the outer diameter of the rotor structure may be larger than a limited size of the outer diameter of the motor during the land transportation.
[0039] In order to facilitate the transportation of the module magnetic poles 112 during transportation, the module magnetic poles 112 may be transported separately, and be mounted on the module magnetic yoke 111 after the transportation is finished; or the module magnet poles 112 may be mounted on the module magnetic yoke 111 first, and then the rotor modules 11 on which the module magnetic poles 112 are mounted are transported.
[0040] The adjacent rotor modules 11 are detachably connected with each other by the module ribbed plate 113, and a module-ribbed-plate fastener 15 may be a bolt or other connection manner that meets the requirements; and the module fixing plate 114 is detachably connected with the module connecting flange 12, and a module-fixing-plate fastener 14 may be a bolt or other connection manner that meets the requirements.
[0041] The rotor modules 11 in the modular rotor structure are segmented in the circumferential direction, and all the rotor modules 11 are combined together in the circumferential direction to form the rotor assembly 1.
[0042] The modular rotor structure allows the disassembly of the rotor assembly 1 of the
English translation of PCT/CN2018/103744
high-power motor to be realized during the transportation, and then the stator assembly 2 and the rotor assembly 1 are separately transported, so that the outer diameter of the high-power motor is changed into the outer diameter of the stator assembly 2 during the transportation. In a case that the outer diameter of the stator assembly 2 meets the limitation on the outer diameter of the motor during the land transportation, the outer diameter of the rotor assembly 1 can be larger than the limitation on the outer diameter of the motor during the land transportation. Therefore, under same land transportation rules, the outer diameter of the high-power motor can be further increased, so that the power of the motor can be increased to meet requirements for the power of the motor and requirements of the land transportation rules in actual manufacturing.
[0043] In addition, from the perspective of processing and manufacturing, the integrated rotor assembly is difficult to process, and is prone to deformation during processing, lifting and transportation, and has a high cost of scrapped loss, thereby increasing the manufacturing cost. During processing and manufacturing, the modular rotor structure reduces the size of the parts and the processing difficulty, and is not prone to deformation during use, such that the cost of scrapped loss is reduced, and the manufacturing cost is further reduced, thereby improving the market competitiveness of the products.
[0044] Therefore, the modular rotor structure allows the high-power motor to avoid the limitation of the land transportation rules, and also reduces the manufacturing cost and promotes the market competitiveness of the products.
[0045] On the basis of the above specific embodiments, considering that some high-power motors have a large number of poles, if there is only one magnetic-pole mounting plane in one module magnetic yoke 111, a large number of module magnetic yokes 111 need to be processed. The more the module magnetic yokes 111, the more the module ribbed plates 113 and the module fixing plates 114. The more connection portions that need to be disassembled and mounted during the disassembly and mounting process, the more complicated the operation process is. Therefore, at least one module-magnetic-pole mounting plane is arranged in the module magnetic yoke 111, and the angles between all adjacent module-magnetic-pole mounting planes are the same, as shown in Figure 5.
[0046] Specifically, a section of the module-magnetic-pole mounting planes in the module magnetic yoke 111 is a polygonal structure. After all the rotor modules 11 are assembled
English translation of PCT/CN2018/103744
together, a regular polygon having a same inscribed circle is just formed by the sections of all the module-magnetic-pole mounting planes, and all the module-magnetic-pole mounting planes are equidistant from a center of the rotor assembly. Due to mounting or processing reasons, the regular polygon is only an approximate shape, and does not meet a strict dimension standard in geometric definition. The module magnetic pole 112 is mounted on the module-magnetic-pole mounting plane of the module magnetic yoke 111, and all the module magnetic poles 112 are uniformly distributed in the circumferential direction.
[0047] Increasing the number of the module-magnetic-pole mounting planes in the module magnetic yoke 111 can reduce the number of the rotor modules 11, so that the number of connectors between adjacent rotor modules 11 and the number of connectors between the rotor modules 11 and the module connecting flange 12 are correspondingly reduced. Therefore, the assembly or disassembly process of the rotor module 11 is simpler, thereby saving the time for disassembly and mounting.
[0048] Not all the module magnetic yokes 111 have the same number of the module-magnetic-pole mounting planes herein, and there may be a case where the module magnetic yokes 111 in a same motor have different number of module-magnetic-pole mounting planes.
[0049] Consider that the module magnetic pole 112 has a flat mounting surface, the module-magnetic-pole mounting surface herein is a plane. In order to match the shape of the mounting surface of the module magnetic pole 112, the module-pole-mounting surface of the module magnetic yoke 111 is provided as a plane. On the basis of the above specific embodiments, considering that the mounting surface of the module magnetic pole 112 may be an arc surface, the module-magnetic-pole mounting surface of the module magnetic yoke 111 is an arc surface having the same radius.
[0050] Specifically, cross sections of the module-magnetic-pole mounting surfaces in the module magnetic yoke 111 are arcs having the same radius. After all the rotor modules 11 are assembled together, a circle is just formed by the cross sections of all the module-magnetic-pole mounting surfaces, and all the module-magnetic-pole mounting surfaces are equidistant from the center of the rotor assembly. Due to mounting or processing reasons, the circle is only an approximate shape, and does not meet the strict dimension standard in the geometric definition. The module magnetic pole 112 is mounted on the
English translation of PCT/CN2018/103744
module-magnetic-pole mounting surface of the module magnetic yoke 111, and all the module magnetic poles 112 are uniformly distributed in the circumferential direction.
[0051] The module-magnetic-pole mounting surface in the module magnetic yoke 111 is an arc surface, which can cooperate with the mounting of the module magnetic pole 112 of which the mounting surface is an arc surface. At the same time, during processing, compared with the processing of the polygonal structure, operations such as edge finding and angle measuring are not required during the processing of the arc surface, which makes the processing process simpler, easier to operate, and saves the processing time, thereby reducing the manufacturing cost and further improving the market competitiveness of the products.
[0052] The module-magnetic-pole mounting surfaces herein may be arc surfaces with uniform angles, that is, each module magnetic yoke 111 has the module-magnetic-pole mounting surface with a same size, the module magnetic pole 112 can adopt a same positioning structure during the mounting process, and the positioning process is simple. The module-magnetic-pole mounting surfaces may be arc surfaces with non-uniform angles, that is, each module magnetic yoke 111 has the module-magnetic-pole mounting surface with different sizes. In actual manufacturing, specific conditions are specifically analyzed, and the actual manufacturing requirements shall prevail.
[0053] On the basis of the above specific embodiments, considering that the uniformity of the air gap 3 between the rotor assembly 1 and the stator assembly 2 has a great influence on the overall performance of the motor, that is, the higher the consistency of the air gap 3, the better the performance of the motor, the connection between the rotor module 11 and the stator assembly 2 may be configured as an adjustable structure, as shown in Figure 2.
[0054] Specifically, a first through hole maybe provided on the module fixing plate 114, and the first through hole has a larger size than required for the connection with the module connecting flange 12. Therefore, the relative position of the rotor module 11 and the module connecting flange 12 can be adjusted via the first through hole according to actual conditions, that is, the air gap 3 is adjusted by adjusting the relative position between the rotor module 11 and the stator assembly 2. Then the consistency adjustment of the air gap 3 can be realized by adjusting the relative positions of all the rotor modules 11 and the module connecting flange 12 one by one.
[0055] The consistency adjustment of the air gap 3 in the present application can be realized
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by adjusting the relative positions of the multiple rotor modules 11 and the module connecting flange 12. For the integrated rotor structure in the conventional technology, the consistency of the air gap 3 can only be adjusted by adjusting a position of the whole rotor. Therefore, the consistency of the adjusted air gap 3 in the embodiment of the present application is higher, and the performance of the motor is correspondingly improved.
[0056] The first through hole herein may be of any shape, as long as the relative position between the rotor module 11 and the module connecting flange 12 can be adjusted via the first through hole, and the first through hole can be configured to fix a connection position of the rotor module 11 and the module connecting flange 12.
[0057] On the basis of the above specific embodiments, considering that the adjustment process of the consistency of the air gap 3 is complicated, multiple pin holes may be processed on the module fixing plate 114. After the relative position adjustment of the rotor module 11 and the module connecting flange 12 has been done, the two are positioned by pin-hole align drilling, so that there is no need to readjust the air gap 3 in the next mounting process.
[0058] Specifically, multiple pin holes are provided on the module fixing plate 114. After the consistency adjustment of the air gap 3 between the rotor module 11 and the stator assembly 2 has been done, the pin-hole align drilling is performed via the pin holes on the module fixing plate 114 and the module fixing plate 12, and the interconnected portions are marked. In this way, after one disassembly, the positioning and reassembly process only needs to mount module-mounting positioning pins 13 into the corresponding pin holes, and there is no need to readjust the consistency of the air gap 3, thereby avoiding the complicated operation of repeatedly adjusting the air gap 3 and saving working time.
[0059] It should be further noted that the pin-hole align drilling herein refers to that the module fixing plate 114 has pin holes, and the module connecting flange 12 does not have pin holes, after the consistency adjustment of the air gap 3 has been done, pin holes that correspond to the positions of the pin holes on the module fixing plate 114 and are fit with the pin holes on the module fixing plate 114, are processed at corresponding positions of the module connecting flange 12.
[0060] On the basis of the above specific embodiments, considering that the adjacent rotor modules 11 need to be connected via the module ribbed plate 113, a second through hole
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configured to adjust a connection position is provided on the module ribbed plate 113.
[0061] In the process of adjusting the air gap 3, not only the relative position between the module fixing plate 114 and the module connecting flange 12 needs to be adjusted, but also the relative position between the adjacent rotor modules 11 needs to be adjusted. Therefore, the second through hole configured to adjust the connecting position of the adjacent rotor modules 11 is provided on the module ribbed plate 113, so that a fixing position can be adjusted at any time according to the adjustment of the air gap 3. Moreover, the second through hole can also be used for securing the adjacent rotor modules 11, so that the connection of the adjacent rotor modules 11 is firmer, thereby avoiding a situation where the adjacent rotor modules 11 are loosened under high-speed rotation during work.
[0062] The fastening method herein may be bolt fastening. In order to avoid loosening, appropriate glue may be used for bonding. The fastening method may be other fastening and anti-loose method, which will not be described in detail herein.
[0063] Besides, the second through hole herein may be of any shape, as long as the relative position between the adjacent rotor modules 11 can be adjusted via the second through hole, and the second through hole can be configured to secure the adjacent rotor modules 11.
[0064] It should be further noted that, the first through hole in the present application is a through hole on the module fixing plate 114 for adjusting the relative position of the module fixing plate 114 and the module connecting flange 12, the second through hole in the present application is a through hole on the module ribbed plate 113 for adjusting the relative position of the adjacent rotor modules 11, the first and the second are just used to distinguish the through holes at different positions, and there is no order in sequence.
[0065] On the basis of the above specific embodiments, considering that it is difficult to process and mount the module magnetic pole 112, the module magnetic pole 112 is designed as an axially segmented structure.
[0066] The module magnetic pole 112 of the axially segmented structure is shorter in a length direction than before, the magnetic force is smaller than before in the mounting process, and the influence of the magnetic force in the mounting process is small. Therefore, the difficulty of the mounting process is reduced. In addition, after the size is shortened, it will be easier to process and manufacture the module magnetic pole 112, thereby reducing the
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difficulty of processing and manufacturing.
[0067] In addition to the above modular rotor structure, a permanent magnet motor including the modular rotor structure disclosed by the above embodiments of the present application is further provided according to the present application. For the structures of other parts of the permanent magnet motor, reference is made to the conventional technology, which will not be described in detail herein.
[0068] In the present specification, the embodiments are described in a progressive manner. Each embodiment mainly focuses on an aspect different from other embodiments, and reference can be made to these similar parts among the embodiments. Any combination of all the specific embodiments is within the protection scope of the present application, and will not be described herein.
[0069] The modular rotor structure and the permanent magnet motor including the modular rotor structure provided by the present application are described in detail above. The principle and embodiments of the present application are described through specific examples herein. The description of the above-described embodiments is merely used to facilitate understanding the method and core idea of the present application. It should be noted that, for those skilled in the art, various improvements and modifications may be further made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope defined by the claims of the present application.
Claims (9)
1. A modular rotor structure, comprising a module connecting flange and at least two rotor modules segmented in a circumferential direction, wherein
each of the at least two rotor modules comprises a module magnetic pole, a module magnetic yoke configured to mount the module magnetic pole, a module fixing plate, and a module ribbed plate configured to detachably connect with adjacent rotor modules; and
the module ribbed plate is fixedly connected with the module magnetic yoke, the module magnetic yoke is fixedly connected with the module fixing plate, and the module fixing plate is detachably connected with the module connecting flange;
wherein the module fixing plate has a first through hole configured to adjust a relative position of the module fixing plate and the module connecting flange.
2. The modular rotor structure according to claim 1, wherein one module magnetic yoke comprises at least one module-magnetic-pole mounting plane, and angles between all adjacent module-magnetic-pole mounting planes are same.
3. The modular rotor structure according to claim 2, wherein all the module-magnetic-pole mounting planes in the module magnetic yoke are equidistant from a '0 center of a modular rotor assembly.
4. The modular rotor structure according to claim 1, wherein all module-magnetic-pole mounting surfaces in the module magnetic yoke are arc surfaces having a same radius.
5. The modular rotor structure according to claim 4, wherein all the module-magnetic-pole mounting surfaces in the module magnetic yoke are equidistant from a center of a modular rotor assembly.
6. The modular rotor structure according to claim 1, wherein the module fixing plate has a pin hole configured to perform pin-hole align drilling with the module connecting flange.
7. The modular rotor structure according to claim 6, wherein the module ribbed plate has a second through hole configured to adjust a relative position of the adjacent rotor modules.
8. The modular rotor structure according to any one of claims 1 to 7, wherein the module magnetic pole has an axially segmented structure.
9. A permanent magnet motor, comprising a rotor structure, wherein the rotor structure is the modular rotor structure according to any one of claims 1 to 8.
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Figure 1
Figure 2
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Figure 4
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Figure 6
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Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810916513.5 | 2018-08-13 | ||
| CN201810916513.5A CN108923557B (en) | 2018-08-13 | 2018-08-13 | Permanent magnet motor and modular rotor structure thereof |
| PCT/CN2018/103744 WO2020034266A1 (en) | 2018-08-13 | 2018-09-03 | Permanent magnet motor and modular rotor structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2018431391A1 AU2018431391A1 (en) | 2020-02-27 |
| AU2018431391B2 true AU2018431391B2 (en) | 2020-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| AU2018431391A Active AU2018431391B2 (en) | 2018-08-13 | 2018-09-03 | Permanent magnet motor and modular rotor structure thereof |
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| Country | Link |
|---|---|
| CN (1) | CN108923557B (en) |
| AU (1) | AU2018431391B2 (en) |
| BR (1) | BR112020006203A2 (en) |
| WO (1) | WO2020034266A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113098173B (en) * | 2019-12-23 | 2023-03-31 | 新疆金风科技股份有限公司 | Supporting tool structure, split rotor with tool and assembling method of motor rotor |
| EP4016809B1 (en) * | 2020-12-18 | 2023-01-04 | Wobben Properties GmbH | Segmented generator, generator segment and wind turbine as well as method for preparation for transportation, method for transportation and assembling method for a segmented generator as well as method for installing a wind turbine |
| EP4016804A1 (en) | 2020-12-18 | 2022-06-22 | Wobben Properties GmbH | Segmented generator, rotor segment, generator segment and wind turbine |
| DE102020134188A1 (en) * | 2020-12-18 | 2022-06-23 | Wobben Properties Gmbh | Stator segment, rotor segment and generator and method |
| CN112953126B (en) * | 2021-01-20 | 2023-09-08 | 中国长江动力集团有限公司 | Universal collecting ring housing of steam turbine generator |
| US11909268B2 (en) | 2021-03-11 | 2024-02-20 | ZF Active Safety US Inc. | Integrated rotor |
| CN113964986B (en) * | 2021-12-21 | 2022-03-15 | 常州神力电机股份有限公司 | Super-large-specification wind power rotor workpiece and intelligent assembling system and method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090134629A1 (en) * | 2007-11-26 | 2009-05-28 | Siemens Aktiengesellschaft | Direct drive generator and wind turbine |
| US20110298330A1 (en) * | 2008-12-18 | 2011-12-08 | Stephan Joeckel | Generator for a wind energy installation and method for its production |
| CN104467229A (en) * | 2014-11-19 | 2015-03-25 | 新疆金风科技股份有限公司 | Rotor module and assembling method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2713480B1 (en) * | 2012-09-27 | 2018-01-31 | Siemens Aktiengesellschaft | Rotor of a permanent magnet generator |
| EP2731232B1 (en) * | 2012-11-08 | 2019-01-30 | GE Renewable Technologies Wind B.V. | Generator for a wind turbine |
| CN203193408U (en) * | 2013-04-02 | 2013-09-11 | 中国第一重型机械股份公司 | Wind power generator assembly-type stator device |
| CN203911615U (en) * | 2014-06-24 | 2014-10-29 | 北京金风科创风电设备有限公司 | Permanent magnet generator rotor and generator |
| CN104333180B (en) * | 2014-12-02 | 2017-03-01 | 哈尔滨电机厂有限责任公司 | Heavy whole Transporting electromotor is in Installation in Plant method |
| CN105186743B (en) * | 2015-09-10 | 2017-11-14 | 华中科技大学 | A kind of method for the rotor mechanism for making magneto |
| CN205945457U (en) * | 2016-08-23 | 2017-02-08 | 中车株洲电机有限公司 | Rotor of excitation split type iron core cures frock |
| CN106849391B (en) * | 2017-03-06 | 2019-08-02 | 新疆金风科技股份有限公司 | Magnetic pole module, rotor, motor and wind power generating set |
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- 2018-08-13 CN CN201810916513.5A patent/CN108923557B/en active Active
- 2018-09-03 BR BR112020006203-0A patent/BR112020006203A2/en active IP Right Grant
- 2018-09-03 AU AU2018431391A patent/AU2018431391B2/en active Active
- 2018-09-03 WO PCT/CN2018/103744 patent/WO2020034266A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090134629A1 (en) * | 2007-11-26 | 2009-05-28 | Siemens Aktiengesellschaft | Direct drive generator and wind turbine |
| US20110298330A1 (en) * | 2008-12-18 | 2011-12-08 | Stephan Joeckel | Generator for a wind energy installation and method for its production |
| CN104467229A (en) * | 2014-11-19 | 2015-03-25 | 新疆金风科技股份有限公司 | Rotor module and assembling method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020034266A1 (en) | 2020-02-20 |
| BR112020006203A2 (en) | 2021-03-02 |
| CN108923557A (en) | 2018-11-30 |
| AU2018431391A1 (en) | 2020-02-27 |
| CN108923557B (en) | 2020-06-26 |
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