Permanent magnet semi-direct drive wind power motor rotor magnetic pole assembling and magnetizing method and device

Abstract

The invention discloses a permanent magnet semi-direct drive wind power motor rotor magnetic pole assembly magnetizing method and device, and belongs to the technical field of wind power generator assembly, and the method comprises the following steps: a, completing the assembly of a rotor; b, positioning the rotor through a transition positioning flange; c, starting a magnetizer, and carrying out saturated magnetization on a pair of magnetic poles of the rotor; d, after magnetizing is completed, a magnetizing magnetic flux measuring coil measures and records magnetic fluxes of the two poles; e, rotating the rotor by an angle of one pole through the rotor rotating platform, and repeatedly completing magnetizing and magnetic flux detection of the next pair of magnetic poles of the rotor; and f, after all the magnetic poles on the rotor are magnetized, the rotor is rotated by one circle through the rotor rotating platform, and the outer circle surface magnetic distribution waveform of the rotor is scanned. Through cooperation of the magnetizing platform portal frame and the symmetrical double magnetizing heads, the problem of rotor stress at the moment of magnetizing can be solved, the magnetizing efficiency can be improved, and the magnetizing platform is suitable for overall magnetizing and batch automatic production of the permanent magnet semi-direct-drive wind driven generator rotor.

Description

Technical Field

[0001] The present invention relates to the technical field of wind generator assembly, and in particular to a permanent magnet semi-direct drive wind turbine rotor pole assembly and magnetization method and device. Background Art

[0002] The rotor of a permanent magnet semi-direct-drive wind turbine generator primarily consists of a rotor bracket, a pole box, a tensioning screw, and a pole pressure plate. The pole box contains permanent magnets. Multiple pole boxes are stacked axially in a row to form a single pole, and the rotor poles have multiple poles throughout the entire circle. As the source of the motor's magnetomotive force, the magnetization quality of the permanent magnets is a crucial factor in determining motor performance.

[0003] A Chinese patent document with publication number CN205104319U and publication date March 23, 2016, discloses an online automatic magnetization detection device, including a workbench, on which a magnetization station and a detection station are provided: the magnetization station is provided with a positioning and clamping mechanism for limiting the position of the magnetization device and a coil body for magnetizing and detecting magnetic flux of the magnetization device, the coil body being arranged on a telescopic rod of an electric lifting mechanism; the detection station includes an electric lifting mechanism equipped with a multi-channel surface magnetic detection probe, and a rotation mechanism is further provided at the connection between the electric lifting mechanism and the multi-channel surface magnetic detection probe.

[0004] The online automatic magnetization and detection device disclosed in this patent document provides a method for the overall magnetization of the permanent magnet rotor of a multi-pole motor with a kilowatt-class capacity in the new energy vehicle industry. The device is designed by setting a magnetization station and a detection station on a workbench. The magnetization station is equipped with a coil body for magnetizing the magnetized device and performing flux detection, while the detection station is equipped with a multi-channel surface magnetic detection probe. The device combines flux detection with the overall magnetization coil, automatically performing flux detection after magnetization, merging workstations and shortening detection time. This simplifies worker operations and improves production efficiency. However, this device is only applicable to small permanent magnet motors and is not suitable for semi-direct-drive wind turbines. Since the rotors of semi-direct-drive wind turbines are 3t-15t and have an outer diameter of 500mm-500mm, the amount of magnet steel used per pole, the magnetization energy, and the magnetization force are all very large. In particular, the rotor force problem at the moment of magnetization cannot be solved, making mass production and industrial application impossible. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a permanent magnet semi-direct drive wind turbine rotor pole assembly and magnetization method and device. The present invention, through the coordinated cooperation of the magnetization platform gantry and the symmetrical dual magnetization heads, can not only solve the problem of rotor force at the moment of magnetization, but also improve the magnetization efficiency. It is suitable for the overall magnetization and batch automated production of permanent magnet semi-direct drive wind turbine rotors.

[0006] The present invention is achieved through the following technical solutions: A method for assembling and magnetizing the magnetic poles of a permanent magnet semi-direct drive wind turbine rotor, characterized by comprising the following steps: a. Install the unmagnetized pole assembly on the rotor bracket to complete the rotor assembly; b. Remove the magnetizing platform gantry, hoist the rotor onto the rotor rotating platform, and position the rotor through the transition positioning flange; c. Move the magnetization platform gantry to the magnetization station, place the magnetization flux measurement coil close to the magnetic pole surface of the rotor through the magnetization coil support column, turn on the magnetizer, and perform saturation magnetization on a pair of rotor poles; d. After magnetization is completed, the magnetization flux measurement coil is moved away from the rotor through the magnetization coil support column, and the magnetization flux measurement coil measures and records the magnetic flux of the two poles; e. Rotate the rotor by one pole angle through the rotor rotating platform, and repeat the magnetization and magnetic flux detection of the next pair of magnetic poles of the rotor; f. After all the magnetic poles on the rotor are magnetized, move the surface magnetic measurement mechanism and approach it to the fixed position of the outer circle of the rotor. The rotor rotating platform rotates one circle to scan the surface magnetic distribution waveform of the outer circle of the rotor.

[0007] It also includes an intelligent magnetization step, which refers to transmitting magnetization data, magnetic flux data and surface magnetic distribution waveform data to the MES system, and completing the intelligent magnetization of the rotor poles through the control of the MES system.

[0008] In the above b, the transition positioning flange is used to fix the rotor on the rotor rotating platform and position it so that the magnetic poles of the rotor and the magnetized flux measurement coil are automatically aligned to zero.

[0009] In said f, the outer diameter of the rotor is 1400-3000 mm.

[0010] The magnetizing coil supporting column is used to drive the magnetizing flux measuring coil to approach or move away from the rotor.

[0011] The magnetizing flux measuring coil is used for magnetizing and detecting magnetic flux.

[0012] A permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device, including a magnetizer and a magnetizing flux measuring coil, characterized in that it also includes a magnetizing platform gantry, a surface magnetic measurement mechanism, a transition positioning flange, a rotor rotating platform and a magnetizing coil supporting column. The magnetizing platform gantry includes a crossbeam, a base and two columns. The upper ends of the columns are fixedly connected to the crossbeam, and the lower ends of the columns are fixedly connected to the base. The two columns are symmetrically arranged along the center of the crossbeam. There are two magnetizing coil supporting columns and two magnetizing flux measuring coils. The magnetizing flux measuring coil is fixed on the magnetizing coil supporting columns. The magnetizing coil supporting columns drive the magnetizing flux measuring coil to perform linear reciprocating motion. The magnetizing coil supporting columns are symmetrically arranged on the two columns of the magnetizing platform gantry. The rotor rotating platform is installed on the base of the magnetizing platform gantry. The transition positioning flange is engaged with the rotor rotating platform.

[0013] The surface magnetic measurement mechanism includes a surface magnetic measurement probe, a positioning roller, a roller fixing shaft, an elastic member and a roller fixing frame. The surface magnetic measurement probe and the positioning roller are arranged on the roller fixing shaft. One end of the roller fixing frame is connected to the roller fixing shaft, and the other end of the roller fixing frame is connected to the elastic member.

[0014] There are multiple surface magnetic measurement probes, positioning rollers and elastic members. The surface magnetic measurement probes and positioning rollers are evenly arranged on the roller fixing shaft, and any positioning roller is located between two adjacent elastic members.

[0015] The distance between the surface magnetic measurement probe and the rolling surface of the positioning roller is 0.2-2 mm.

[0016] The rotor rotating platform includes a rotating table, a base, a tapered roller bearing, a bearing mounting seat and a servo motor. The bearing mounting seat is fixed on the base, the tapered roller bearing is mounted on the bearing mounting seat, the rotating table is rotatably set on the base through the tapered roller bearing, and the motor shaft of the servo motor is connected to the rotating table.

[0017] There are two bearing mounting seats, which are symmetrically arranged on the base along the central axis of the rotating platform.

[0018] Two tapered roller bearings are arranged on the bearing mounting seat, and the two tapered roller bearings are arranged along the axial direction of the rotating platform.

[0019] The MES system described in the present invention refers to a production information management system for the execution layer of the workshop of a manufacturing enterprise.

[0020] The basic principles of the present invention are as follows: The magnetizing platform gantry is coordinated with the symmetrical double magnetizing heads. The magnetizing platform gantry includes a crossbeam, a base and two columns. The upper ends of the columns are fixedly connected to the crossbeam, and the lower ends of the columns are fixedly connected to the base. The two columns are symmetrically arranged along the center of the crossbeam. The magnetizing platform gantry with this specific structure can provide rigid support and ensure the stability and reliability of the magnetizing process.

[0021] The magnetizing platform gantry provides stable support, while the rotor rotating platform and transition positioning flange achieve precise rotor alignment and indexing rotation. The magnetizing machine, combined with a linearly adjustable magnetizing flux measurement coil, dynamically applies and calibrates the magnetic field, and cooperates with the surface magnetic measurement mechanism to monitor the magnetic flux intensity and distribution in real time, thereby completing high-precision magnetization and quality verification of multiple poles in an automated cycle, taking into account both efficiency and consistency, and is suitable for the batch assembly needs of permanent magnet semi-direct-drive wind turbine motor rotors.

[0022] The beneficial effects of the present invention are mainly manifested in the following aspects: 1. Compared with the prior art, the present invention not only solves the problem of rotor force at the moment of magnetization, but also improves the magnetization efficiency through the coordinated cooperation of the magnetization platform gantry and the symmetrical dual magnetization heads. It is suitable for the integral magnetization and batch automated production of permanent magnet semi-direct drive wind turbine rotors.

[0023] 2. In the present invention, the entire magnetization method ensures automatic zeroing of the rotor poles and the magnetization flux measurement coil through positioning by the stop and positioning pin of the transition positioning flange, eliminating cumulative assembly errors. The linear adjustment of the magnetization flux measurement coil's dynamic approach and distance combined with saturation magnetization achieves efficient and uniform loading of the magnetic field on the pole surface. Step-by-step rotation magnetization and real-time measurement of magnetic flux form a pole-by-pole closed-loop calibration to avoid discrete magnetic pole performance. Finally, the waveform scanning of the magnetic distribution on the outer surface comprehensively verifies the consistency of the magnetic poles and ensures the uniformity of the air gap magnetic field. The overall process significantly improves the efficiency, accuracy and reliability of the mass production of permanent magnet rotors through the automated cycle of positioning, magnetization, detection and rotation.

[0024] 3. The present invention integrates magnetization parameters, real-time magnetic flux and surface magnetic waveform data into the MES system to achieve data closed-loop management and dynamic optimization of the magnetization process. The MES system automatically analyzes the magnetization deviation and provides feedback to adjust the magnetizer parameters to ensure that the single-pole magnetic field strength and multi-pole synergy meet the standards. The traceability of the entire process data supports quality backtracking and process optimization. At the same time, the MES system coordinates production, which can reduce manual intervention, improve magnetization consistency and yield, and meet the high-precision and intelligent mass production requirements of permanent magnet rotors.

[0025] 4. The present invention specifically adopts a magnetizing platform gantry, which can provide rigid support, ensure the stability of the magnetizing process, and solve the problem of rotor force at the moment of magnetization.

[0026] 5. The present invention can ensure the precise positioning and stable indexing rotation of the rotor poles through the rigid coordination of the magnetization platform gantry and the rotor rotating platform, thereby significantly improving the magnetization alignment accuracy.

[0027] 6. The present invention adopts a magnetizing coil support column to drive the magnetizing flux measurement coil to perform linear reciprocating motion, thereby achieving dynamic calibration and uniform coverage of the magnetic field and reducing magnetization deviation.

[0028] 7. In the present invention, there are multiple surface magnetic measurement probes, positioning rollers and elastic parts. The surface magnetic measurement probes and positioning rollers are evenly arranged on the roller fixing axis. Any positioning roller is located between two adjacent elastic parts. Through the coordinated action of the evenly distributed surface magnetic measurement probes and the alternately arranged positioning rollers and elastic parts, comprehensive scanning of the outer surface magnetic field of the rotor, adaptive contact pressure compensation and stable radial positioning are achieved, ensuring that the surface magnetic measurement probe and the rotor surface are evenly fitted during the measurement process to avoid offset or vibration interference, thereby improving the accuracy and reliability of magnetic field distribution detection.

[0029] 8. In the present invention, the rotor rotating platform includes a rotating table, a base, a tapered roller bearing, a bearing mounting seat and a servo motor. The bearing mounting seat is fixed to the base, the tapered roller bearing is mounted on the bearing mounting seat, the rotating table is rotatably set on the base through the tapered roller bearing, and the motor shaft of the servo motor is connected to the rotating table. The rotor rotating platform adopts this specific structure, through the high-rigidity support of the tapered roller bearing and the precise drive of the servo motor, to achieve high-precision indexing rotation and stable load-bearing of the rotor, ensure the repeatability of rotor positioning and anti-overturning ability during magnetization, and meet the rigidity requirements of large-size permanent magnet rotor assembly.

[0030] 9. The present invention integrates a surface magnetic measurement mechanism to monitor the magnetic flux distribution in real time, forming a closed-loop quality control to ensure the consistency of magnetic pole performance.

[0031] 10. The present invention has an overall automated cycle process that significantly shortens the single-pole magnetization period, adapting to the needs of high-efficiency batch production while reducing manual intervention, ensuring the reliability and yield rate of permanent magnet rotor assembly.

[0032] 11. The present invention realizes efficient and high-precision multi-pole continuous magnetization through the integration of mechanical positioning, electromagnetic control and real-time detection, significantly improving the quality and production efficiency of permanent magnet rotor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, wherein: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a structural diagram of the magnetizing platform gantry of the present invention; Figure 3 It is a structural schematic diagram of the surface magnetic measurement mechanism of the present invention; Figure 4 This is a schematic structural diagram of the rotor rotating platform of the present invention; Markings in the figure: 1. Magnetic pole assembly, 2. Rotor bracket, 3. Rotor, 4. Magnetization platform gantry, 5. Rotor rotating platform, 6. Transition positioning flange, 7. Magnetization coil support column, 8. Magnetization flux measurement coil, 9. Magnetizer, 10. Surface magnetic measurement mechanism, 11. Beam, 12. Base, 13. Column, 14. Surface magnetic measurement probe, 15. Positioning roller, 16. Roller fixing shaft, 17. Elastic part, 18. Roller fixing frame, 19. Rotating table, 20. Base, 21. Tapered roller bearing, 22. Bearing mounting seat, 23. Servo motor. DETAILED DESCRIPTION

[0034] Example 1 See also Figure 1 and Figure 2 A method for assembling and magnetizing the rotor poles of a permanent magnet semi-direct drive wind turbine motor comprises the following steps: a. Install the unmagnetized magnetic pole assembly 1 on the rotor bracket 2 to complete the assembly of the rotor 3; b. Remove the magnetizing platform gantry 4, hoist the rotor 3 onto the rotor rotating platform 5, and position the rotor 3 through the transition positioning flange 6; c. Move the magnetization platform gantry 4 to the magnetization station, place the magnetization flux measurement coil 8 close to the magnetic pole surface of the rotor 3 through the magnetization coil support column 7, turn on the magnetizer 9, and perform saturation magnetization on a pair of magnetic poles of the rotor 3; d. After magnetization is completed, the magnetization flux measurement coil 8 is moved away from the rotor 3 through the magnetization coil support column 7, and the magnetization flux measurement coil 8 measures and records the magnetic flux of the two poles; e. Rotate the rotor 3 by one pole angle through the rotor rotating platform 5, and repeat the magnetization and magnetic flux detection of the next pair of magnetic poles of the rotor 3; f. After all the magnetic poles on the rotor 3 are magnetized, the surface magnetic measurement mechanism 10 is moved close to the fixed position of the outer circle of the rotor 3. The rotor rotating platform 5 rotates one circle to scan the surface magnetic distribution waveform of the outer circle of the rotor 3.

[0035] This embodiment is the most basic implementation method. Compared with the existing technology, the coordinated cooperation between the magnetization platform gantry 4 and the symmetrical dual magnetization heads can not only solve the force problem of the rotor 3 at the moment of magnetization, but also improve the magnetization efficiency. It is suitable for the overall magnetization and mass automated production of the permanent magnet semi-direct drive wind turbine rotor 3.

[0036] Example 2 See also Figure 1 and Figure 2A method for assembling and magnetizing the rotor poles of a permanent magnet semi-direct drive wind turbine motor comprises the following steps: a. Install the unmagnetized magnetic pole assembly 1 on the rotor bracket 2 to complete the assembly of the rotor 3; b. Remove the magnetizing platform gantry 4, hoist the rotor 3 onto the rotor rotating platform 5, and position the rotor 3 through the transition positioning flange 6; c. Move the magnetization platform gantry 4 to the magnetization station, place the magnetization flux measurement coil 8 close to the magnetic pole surface of the rotor 3 through the magnetization coil support column 7, turn on the magnetizer 9, and perform saturation magnetization on a pair of magnetic poles of the rotor 3; d. After magnetization is completed, the magnetization flux measurement coil 8 is moved away from the rotor 3 through the magnetization coil support column 7, and the magnetization flux measurement coil 8 measures and records the magnetic flux of the two poles; e. Rotate the rotor 3 by one pole angle through the rotor rotating platform 5, and repeat the magnetization and magnetic flux detection of the next pair of magnetic poles of the rotor 3; f. After all the magnetic poles on the rotor 3 are magnetized, the surface magnetic measurement mechanism 10 is moved close to the fixed position of the outer circle of the rotor 3. The rotor rotating platform 5 rotates one circle to scan the surface magnetic distribution waveform of the outer circle of the rotor 3.

[0037] It also includes an intelligent magnetization step, which refers to transmitting magnetization data, magnetic flux data and surface magnetic distribution waveform data to the MES system, and completing the intelligent magnetization of the rotor's three poles through the control of the MES system.

[0038] In step b, the transition positioning flange 6 is used to fix the rotor 3 on the rotor rotating platform 5 and position it so that the magnetic poles of the rotor 3 and the magnetized flux measuring coil 8 are automatically aligned to zero.

[0039] In said f, the outer diameter of the rotor 3 is 1400 mm.

[0040] This embodiment is a preferred implementation method. The entire magnetization method ensures automatic zeroing of the rotor 3 magnetic poles and the magnetization flux measurement coil 8 through positioning by the stop and positioning pin of the transition positioning flange 6, eliminating assembly cumulative errors. The linear adjustment of the dynamic approach and distance of the magnetization flux measurement coil 8 is combined with saturation magnetization to achieve efficient and uniform loading of the magnetic field on the pole surface. Step-by-step rotation magnetization and real-time measurement of magnetic flux form a pole-by-pole closed-loop calibration to avoid discrete magnetic pole performance. Finally, the waveform scanning of the magnetic distribution on the outer surface comprehensively verifies the consistency of the magnetic poles and ensures the uniformity of the air gap magnetic field. The overall process significantly improves the efficiency, accuracy and reliability of mass production of the permanent magnet rotor 3 through the automated cycle of positioning, magnetization, detection and rotation.

[0041] By integrating magnetization parameters, real-time magnetic flux and surface magnetic waveform data into the MES system, data closed-loop management and dynamic optimization of the magnetization process are achieved. The MES system automatically analyzes the magnetization deviation and provides feedback to adjust the parameters of the magnetizer 9 to ensure that the single-pole magnetic field strength and multi-pole synergy meet the standards. The traceability of data throughout the entire process supports quality backtracking and process optimization. At the same time, the MES system coordinates production, reduces manual intervention, improves magnetization consistency and yield, and meets the high-precision and intelligent mass production requirements of permanent magnet rotors 3.

[0042] Example 3 See also Figure 1 and Figure 2 A method for assembling and magnetizing the rotor poles of a permanent magnet semi-direct drive wind turbine motor comprises the following steps: a. Install the unmagnetized magnetic pole assembly 1 on the rotor bracket 2 to complete the assembly of the rotor 3; b. Remove the magnetizing platform gantry 4, hoist the rotor 3 onto the rotor rotating platform 5, and position the rotor 3 through the transition positioning flange 6; c. Move the magnetization platform gantry 4 to the magnetization station, place the magnetization flux measurement coil 8 close to the magnetic pole surface of the rotor 3 through the magnetization coil support column 7, turn on the magnetizer 9, and perform saturation magnetization on a pair of magnetic poles of the rotor 3; d. After magnetization is completed, the magnetization flux measurement coil 8 is moved away from the rotor 3 through the magnetization coil support column 7, and the magnetization flux measurement coil 8 measures and records the magnetic flux of the two poles; e. Rotate the rotor 3 by one pole angle through the rotor rotating platform 5, and repeat the magnetization and magnetic flux detection of the next pair of magnetic poles of the rotor 3; f. After all the magnetic poles on the rotor 3 are magnetized, the surface magnetic measurement mechanism 10 is moved close to the fixed position of the outer circle of the rotor 3. The rotor rotating platform 5 rotates one circle to scan the surface magnetic distribution waveform of the outer circle of the rotor 3.

[0043] Preferably, it also includes an intelligent magnetization step, wherein the intelligent magnetization refers to transmitting the magnetization data, magnetic flux data and surface magnetic distribution waveform data to the MES system, and completing the intelligent magnetization of the rotor 3 poles through the control of the MES system.

[0044] In step b, the transition positioning flange 6 is used to fix the rotor 3 on the rotor rotating platform 5 and position it so that the magnetic poles of the rotor 3 and the magnetized flux measuring coil 8 are automatically aligned to zero.

[0045] In said f, the outer diameter of the rotor 3 is 3000 mm.

[0046] The magnetizing coil supporting column 7 is used to drive the magnetizing flux measuring coil 8 to move closer to or away from the rotor 3 .

[0047] The magnetizing flux measuring coil 8 is used for magnetizing and detecting magnetic flux.

[0048] This embodiment is another preferred implementation method, which specifically adopts the magnetization platform gantry 4 to provide rigid support, ensure the stability of the magnetization process, and solve the problem of the rotor 3 being subjected to force at the moment of magnetization.

[0049] Example 4 See also Figure 1 and Figure 2 A permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device includes a magnetizer 9, a magnetizing flux measuring coil 8, a magnetizing platform gantry 4, a surface magnetic measuring mechanism 10, a transition positioning flange 6, a rotor rotating platform 5 and a magnetizing coil supporting column 7. The magnetizing platform gantry 4 includes a beam 11, a base 12 and two columns 13. The upper end of the column 13 is fixedly connected to the beam 11, and the lower end of the column 13 is fixedly connected to the base 12. The two columns 13 are along the center of the beam 11. Symmetrically arranged, there are two magnetizing coil support columns 7 and two magnetizing flux measuring coils 8. The magnetizing flux measuring coil 8 is fixed on the magnetizing coil support columns 7. The magnetizing coil support columns 7 drive the magnetizing flux measuring coil 8 to perform linear reciprocating motion. The magnetizing coil support columns 7 are symmetrically arranged on the two columns 13 of the magnetizing platform gantry 4. The rotor rotating platform 5 is installed on the base 12 of the magnetizing platform gantry 4. The transition positioning flange 6 is engaged with the rotor rotating platform 5.

[0050] This embodiment is another preferred implementation method. Through the rigid cooperation between the magnetizing platform gantry 4 and the rotor rotating platform 5, the precise positioning and stable indexing rotation of the magnetic poles of the rotor 3 can be ensured, and the magnetizing alignment accuracy can be significantly improved.

[0051] The magnetizing coil support column 7 is used to drive the magnetizing flux measuring coil 8 to perform linear reciprocating motion, thereby achieving dynamic calibration and uniform coverage of the magnetic field and reducing magnetizing deviation.

[0052] Example 5 See also Figure 1-Figure 3A permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device includes a magnetizer 9, a magnetizing flux measuring coil 8, a magnetizing platform gantry 4, a surface magnetic measuring mechanism 10, a transition positioning flange 6, a rotor rotating platform 5 and a magnetizing coil supporting column 7. The magnetizing platform gantry 4 includes a beam 11, a base 12 and two columns 13. The upper end of the column 13 is fixedly connected to the beam 11, and the lower end of the column 13 is fixedly connected to the base 12. The two columns 13 are along the center of the beam 11. Symmetrically arranged, there are two magnetizing coil support columns 7 and two magnetizing flux measuring coils 8. The magnetizing flux measuring coil 8 is fixed on the magnetizing coil support columns 7. The magnetizing coil support columns 7 drive the magnetizing flux measuring coil 8 to perform linear reciprocating motion. The magnetizing coil support columns 7 are symmetrically arranged on the two columns 13 of the magnetizing platform gantry 4. The rotor rotating platform 5 is installed on the base 12 of the magnetizing platform gantry 4. The transition positioning flange 6 is engaged with the rotor rotating platform 5.

[0053] The surface magnetic measurement mechanism 10 includes a surface magnetic measurement probe 14, a positioning roller 15, a roller fixing shaft 16, an elastic member 17 and a roller fixing frame 18. The surface magnetic measurement probe 14 and the positioning roller 15 are arranged on the roller fixing shaft 16. One end of the roller fixing frame 18 is connected to the roller fixing shaft 16, and the other end of the roller fixing frame 18 is connected to the elastic member 17.

[0054] There are multiple surface magnetic measuring probes 14 , positioning rollers 15 and elastic members 17 . The surface magnetic measuring probes 14 and positioning rollers 15 are evenly arranged on the roller fixing shaft 16 , and any positioning roller 15 is located between two adjacent elastic members 17 .

[0055] This embodiment is another preferred implementation method. There are multiple surface magnetic measurement probes 14, positioning rollers 15 and elastic members 17. The surface magnetic measurement probes 14 and positioning rollers 15 are evenly arranged on the roller fixing shaft 16. Any positioning roller 15 is located between two adjacent elastic members 17. Through the coordinated action of the evenly distributed surface magnetic measurement probes 14 and the alternately arranged positioning rollers 15 and elastic members 17, comprehensive scanning of the outer surface magnetic field of the rotor 3, adaptive contact pressure compensation and stable radial positioning are achieved, ensuring that the surface magnetic measurement probes 14 and the surface of the rotor 3 are evenly fitted during the measurement process to avoid offset or vibration interference, thereby improving the accuracy and reliability of magnetic field distribution detection.

[0056] Example 6 See also Figures 1-4A permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device includes a magnetizer 9, a magnetizing flux measuring coil 8, a magnetizing platform gantry 4, a surface magnetic measuring mechanism 10, a transition positioning flange 6, a rotor rotating platform 5 and a magnetizing coil supporting column 7. The magnetizing platform gantry 4 includes a beam 11, a base 12 and two columns 13. The upper end of the column 13 is fixedly connected to the beam 11, and the lower end of the column 13 is fixedly connected to the base 12. The two columns 13 are along the center of the beam 11. Symmetrically arranged, there are two magnetizing coil support columns 7 and two magnetizing flux measuring coils 8. The magnetizing flux measuring coil 8 is fixed on the magnetizing coil support columns 7. The magnetizing coil support columns 7 drive the magnetizing flux measuring coil 8 to perform linear reciprocating motion. The magnetizing coil support columns 7 are symmetrically arranged on the two columns 13 of the magnetizing platform gantry 4. The rotor rotating platform 5 is installed on the base 12 of the magnetizing platform gantry 4. The transition positioning flange 6 is engaged with the rotor rotating platform 5.

[0057] Preferably, the surface magnetic measurement mechanism 10 includes a surface magnetic measurement probe 14, a positioning roller 15, a roller fixing shaft 16, an elastic member 17 and a roller fixing frame 18, the surface magnetic measurement probe 14 and the positioning roller 15 are arranged on the roller fixing shaft 16, one end of the roller fixing frame 18 is connected to the roller fixing shaft 16, and the other end of the roller fixing frame 18 is connected to the elastic member 17.

[0058] There are multiple surface magnetic measuring probes 14 , positioning rollers 15 and elastic members 17 . The surface magnetic measuring probes 14 and positioning rollers 15 are evenly arranged on the roller fixing shaft 16 , and any positioning roller 15 is located between two adjacent elastic members 17 .

[0059] The distance between the surface magnetic measuring probe 14 and the rolling surface of the positioning roller 15 is 0.2 mm.

[0060] The rotor rotating platform 5 includes a rotating table 19, a base 20, a tapered roller bearing 21, a bearing mounting seat 22 and a servo motor 23. The bearing mounting seat 22 is fixed on the base 20, and the tapered roller bearing 21 is mounted on the bearing mounting seat 22. The rotating table 19 is rotatably set on the base 20 through the tapered roller bearing 21, and the motor shaft of the servo motor 23 is connected to the rotating table 19.

[0061] This embodiment is another preferred implementation method. The rotor rotating platform 5 includes a rotating table 19, a base 20, a tapered roller bearing 21, a bearing mounting seat 22 and a servo motor 23. The bearing mounting seat 22 is fixed on the base 20, and the tapered roller bearing 21 is mounted on the bearing mounting seat 22. The rotating table 19 is rotatably set on the base 20 through the tapered roller bearing 21. The motor shaft of the servo motor 23 is connected to the rotating table 19. The rotor rotating platform 5 with this specific structure achieves high-precision indexing rotation and stable load-bearing of the rotor 3 through the high-rigidity support of the tapered roller bearing 21 and the precise drive of the servo motor 23, ensuring the repeatability of the positioning of the rotor 3 and the anti-overturning ability during the magnetization process, and meeting the rigidity requirements of the assembly of the large-sized permanent magnet rotor 3.

[0062] Example 7 See also Figures 1-4 A permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device includes a magnetizer 9, a magnetizing flux measuring coil 8, a magnetizing platform gantry 4, a surface magnetic measuring mechanism 10, a transition positioning flange 6, a rotor rotating platform 5 and a magnetizing coil supporting column 7. The magnetizing platform gantry 4 includes a beam 11, a base 12 and two columns 13. The upper end of the column 13 is fixedly connected to the beam 11, and the lower end of the column 13 is fixedly connected to the base 12. The two columns 13 are along the center of the beam 11. Symmetrically arranged, there are two magnetizing coil support columns 7 and two magnetizing flux measuring coils 8. The magnetizing flux measuring coil 8 is fixed on the magnetizing coil support columns 7. The magnetizing coil support columns 7 drive the magnetizing flux measuring coil 8 to perform linear reciprocating motion. The magnetizing coil support columns 7 are symmetrically arranged on the two columns 13 of the magnetizing platform gantry 4. The rotor rotating platform 5 is installed on the base 12 of the magnetizing platform gantry 4. The transition positioning flange 6 is engaged with the rotor rotating platform 5.

[0063] The surface magnetic measurement mechanism 10 includes a surface magnetic measurement probe 14, a positioning roller 15, a roller fixing shaft 16, an elastic member 17 and a roller fixing frame 18. The surface magnetic measurement probe 14 and the positioning roller 15 are arranged on the roller fixing shaft 16. One end of the roller fixing frame 18 is connected to the roller fixing shaft 16, and the other end of the roller fixing frame 18 is connected to the elastic member 17.

[0064] There are multiple surface magnetic measuring probes 14 , positioning rollers 15 and elastic members 17 . The surface magnetic measuring probes 14 and positioning rollers 15 are evenly arranged on the roller fixing shaft 16 , and any positioning roller 15 is located between two adjacent elastic members 17 .

[0065] The distance between the surface magnetic measuring probe 14 and the rolling surface of the positioning roller 15 is 2 mm.

[0066] Further preferably, the rotor rotating platform 5 includes a rotating table 19, a base 20, a tapered roller bearing 21, a bearing mounting seat 22 and a servo motor 23, the bearing mounting seat 22 is fixed on the base 20, the tapered roller bearing 21 is mounted on the bearing mounting seat 22, the rotating table 19 is rotatably set on the base 20 through the tapered roller bearing 21, and the motor shaft of the servo motor 23 is connected to the rotating table 19.

[0067] There are two bearing mounting seats 22 , which are symmetrically arranged on the base 20 along the central axis of the rotating platform 19 .

[0068] Two tapered roller bearings 21 are disposed on the bearing mounting seat 22 , and the two tapered roller bearings 21 are arranged along the axial direction of the rotating platform 19 .

[0069] This embodiment is the best implementation method. The integrated surface magnetic measurement mechanism 10 monitors the magnetic flux distribution in real time to form a closed-loop quality control, which can ensure the consistency of magnetic pole performance.

[0070] The overall automated cycle process significantly shortens the single-pole magnetization period, adapting to the needs of high-efficiency batch production while reducing manual intervention, ensuring the reliability and yield rate of the permanent magnet rotor 3 assembly.

[0071] By integrating mechanical positioning, electromagnetic control and real-time detection, efficient and high-precision multi-pole continuous magnetization is achieved, significantly improving the quality and production efficiency of the permanent magnet rotor 3 assembly. Magnetization coil support column 7: It adopts a guide rail slide and slide box structure, with the slide stroke of 1000mm in the Y axis, the slide moving speed of 2000mm / min in the Y axis, and the positioning accuracy of 0.02mm / m; the slide vertical stroke of Z axis is 1500mm, the slide working feed speed of Z axis is 1-3000mm / min, the slide moving speed of Z axis is 2000mm / min, and the positioning accuracy is 0.02mm / m. The cross-sectional size of the slide is 550mm×550mm, and the movement and positioning of the magnetized flux measurement coil 8 are realized by the magnetized coil support column 7, and the positioning accuracy is within 0.1mm / m.

Claims

1. A permanent magnet semi-direct drive wind turbine rotor pole assembly and magnetization method, characterized in that: The following steps are involved: a. Install the unmagnetized magnetic pole assembly (1) on the rotor bracket (2) to complete the assembly of the rotor (3); b. Remove the magnetizing platform gantry (4), hoist the rotor (3) onto the rotor rotating platform (5), and position the rotor (3) through the transition positioning flange (6); c. Move the magnetization platform gantry (4) to the magnetization station, place the magnetization flux measurement coil (8) close to the magnetic pole surface of the rotor (3) through the magnetization coil support column (7), turn on the magnetizer (9), and perform saturation magnetization on a pair of magnetic poles of the rotor (3); d. After magnetization is completed, the magnetization flux measurement coil (8) is moved away from the rotor (3) through the magnetization coil support column (7), and the magnetization flux measurement coil (8) measures and records the magnetic flux of the two poles; e. Rotating the rotor (3) by one pole angle through the rotor rotating platform (5), and repeating the magnetization and magnetic flux detection of the next pair of magnetic poles of the rotor (3); f. After all the magnetic poles on the rotor (3) are magnetized, the surface magnetic measurement mechanism (10) is moved and brought close to a fixed position on the outer circle of the rotor (3). The rotor rotating platform (5) rotates one circle to scan the surface magnetic distribution waveform on the outer circle of the rotor (3).

2. The method for assembling and magnetizing the rotor poles of a permanent magnet semi-direct drive wind turbine according to claim 1, characterized in that: It also includes an intelligent magnetization step, wherein the intelligent magnetization refers to transmitting magnetization data, magnetic flux data and surface magnetic distribution waveform data to the MES system, and completing the intelligent magnetization of the rotor (3) magnetic poles through the control of the MES system.

3. The method for assembling and magnetizing the rotor poles of a permanent magnet semi-direct drive wind turbine according to claim 1, characterized in that: In the above-mentioned step b, the transition positioning flange (6) is used to fix the rotor (3) on the rotor rotating platform (5) and position it so that the magnetic poles of the rotor (3) and the magnetized flux measuring coil (8) are automatically aligned to zero.

4. The method for assembling and magnetizing the rotor poles of a permanent magnet semi-direct drive wind turbine according to claim 1, characterized in that: In said f, the outer diameter of the rotor (3) is 1400-3000 mm.

5. The method for assembling and magnetizing the rotor poles of a permanent magnet semi-direct drive wind turbine according to claim 1, characterized in that: The magnetizing coil support column (7) is used to drive the magnetizing flux measuring coil (8) to move closer to or away from the rotor (3).

6. The method for assembling and magnetizing the rotor poles of a permanent magnet semi-direct drive wind turbine according to claim 1, characterized in that: The magnetizing flux measuring coil (8) is used for magnetizing and detecting magnetic flux.

7. A permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device, comprising a magnetizer (9) and a magnetizing flux measuring coil (8), characterized in that: The invention also includes a magnetizing platform gantry (4), a surface magnetic measurement mechanism (10), a transition positioning flange (6), a rotor rotating platform (5) and a magnetizing coil supporting column (7), wherein the magnetizing platform gantry (4) includes a crossbeam (11), a base (12) and two columns (13), the upper end of the column (13) is fixedly connected to the crossbeam (11), the lower end of the column (13) is fixedly connected to the base (12), the two columns (13) are symmetrically arranged along the center of the crossbeam (11), and the magnetizing coil supporting column (7) is fixedly connected to the base (12). ) and magnetizing flux measuring coil (8), each of which is two, the magnetizing flux measuring coil (8) is fixed on the magnetizing coil supporting column (7), the magnetizing coil supporting column (7) drives the magnetizing flux measuring coil (8) to make linear reciprocating motion, the magnetizing coil supporting column (7) is symmetrically arranged on two columns (13) of the magnetizing platform gantry (4), the rotor rotating platform (5) is installed on the base (12) of the magnetizing platform gantry (4), and the transition positioning flange (6) is engaged with the rotor rotating platform (5).

8. The permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device according to claim 7, characterized in that: The surface magnetic measurement mechanism (10) comprises a surface magnetic measurement probe (14), a positioning roller (15), a roller fixing shaft (16), an elastic member (17) and a roller fixing frame (18). The surface magnetic measurement probe (14) and the positioning roller (15) are arranged on the roller fixing shaft (16). One end of the roller fixing frame (18) is connected to the roller fixing shaft (16), and the other end of the roller fixing frame (18) is connected to the elastic member (17).

9. The permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device according to claim 8, characterized in that: The surface magnetic measurement probe (14), positioning roller (15) and elastic member (17) are all multiple, and the surface magnetic measurement probe (14) and positioning roller (15) are evenly arranged on the roller fixing shaft (16), and any positioning roller (15) is located between two adjacent elastic members (17).

10. The permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device according to claim 8, characterized in that: The distance between the surface magnetic measurement probe (14) and the rolling surface of the positioning roller (15) is 0.2-2 mm.

11. The permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device according to claim 7, characterized in that: The rotor rotating platform (5) comprises a rotating table (19), a base (20), a tapered roller bearing (21), a bearing mounting seat (22) and a servo motor (23), wherein the bearing mounting seat (22) is fixed on the base (20), the tapered roller bearing (21) is mounted on the bearing mounting seat (22), the rotating table (19) is rotatably arranged on the base (20) via the tapered roller bearing (21), and the motor shaft of the servo motor (23) is connected to the rotating table (19).

12. The permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device according to claim 11, characterized in that: There are two bearing mounting seats (22), and the two bearing mounting seats (22) are symmetrically arranged on the base (20) along the central axis of the rotating platform (19).

13. The permanent magnet semi-direct drive wind turbine rotor pole assembly magnetizing device according to claim 11, characterized in that: Two tapered roller bearings (21) are provided on the bearing mounting seat (22), and the two tapered roller bearings (21) are arranged along the axial direction of the rotating platform (19).

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