Combined type multi-tooth stator iron hybrid field switch flux motor

[0022] The composition structure and electromagnetic performance of a combined multi-tooth stator core hybrid excitation switched flux motor of the present invention will be specifically introduced below in conjunction with the accompanying drawings:

[0023] Refer to figure 1 As shown, a combined multi-tooth stator core hybrid excitation switched flux motor of the present invention is mainly composed of stator core tooth module 1, stator core yoke module 2, rotor core 3, armature winding 4, magnetic steel 5, and excitation Winding 6, motor base 7, installation of magnetic isolation aluminum sleeve 9, aluminum sleeve end cover 10, motor shaft 12 and so on.

[0024] Combine figure 1 with figure 2 As shown, the stator core tooth module 1 has a multi-tooth structure, and its center is coaxially provided with an inter-slot 21. The two sides of the inter-slot are symmetrically provided with tooth slots 31, and the tooth slots 31 are adjacent ones. The space between the stacking convex teeth 41 is formed, and the stator core tooth module 1 is formed by laminating a single piece of silicon steel sheet after punching or wire cutting.

[0025] Combine figure 1 , figure 2 with Figure 4 As shown, the magnetic steel 5 is installed in the slot 21, the field winding 6 is nested on the slot 31, the armature winding 4 is a concentrated winding structure, and the ring is sleeved on the stator core Tooth module 1 root.

[0026] Combine figure 1 with image 3 As shown, the stator core yoke module 2 is arranged in a circular arc structure, which is formed by laminating a single piece of silicon steel sheet after punching or wire cutting. The two ends of the stator core yoke module 2 are provided with L-shaped recesses, so that the two ends of the stator core yoke module 2 form flanges, and the stator core tooth module 1 is provided with convex parts at corresponding positions. When the root of the stator core tooth module 1 and the stator core yoke module 2 are assembled together, the convex part of the root of the stator core tooth module 1 is just stuck in the concave part of the stator core yoke module 2.

[0027] Combine figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, the magnet 5, the field winding 6, and the armature winding 4 are sequentially installed in the stator core tooth module 1 to form an independent module. The module and the stator core yoke module 2 are sequentially combined and discharged in the circumferential direction. Inside the mounting magnetic isolation aluminum sleeve 9 and axially fixed by the aluminum sleeve end cover 10.

[0028] The stator core tooth module 1, the stator core yoke module 2, the armature winding 4, the magnetic steel 5 and the field winding 6 constitute the switched flux motor stator 11. The magnetic steel 5 is magnetized in the circumferential direction, and the circumferentially adjacent magnets 5 The magnetizing direction is opposite, the winding direction of the armature winding 4 is the same, and it is arranged as A, B, C three-phase windings in the circumferential direction, the winding direction of the field winding 6 is the same, and the speed is increased according to the motor overload or weak magnetic field. The different requirements change the direction and amplitude of the input current. The rotor core 3 is a sleeve structure with convex teeth, which is a switch magnetic flux motor rotor, and is sleeved on the motor shaft 12.

[0029] Combine figure 1 with Image 6 As shown, the rotor core 3 is a sleeve structure with convex teeth, which is a switched-flux motor rotor, and is sleeved on the motor shaft 12.

[0030] Combine Figure 7 with Figure 8 As shown, an axial coolant pipe 71 is arranged on the outer circumference of the motor frame 7, and the inner wall of the motor frame 7 is provided with a through hole 72 for winding in and out. The motor frame 7 is provided with end caps 8 at both ends in the axial direction. The end cap 8 is provided with a cooling liquid flow cavity 81 along the circumferential direction. The cooling liquid flow cavity 81 is circumferentially connected to two adjacent ones. The cooling liquid pipeline 71 is connected to form a cooling liquid circulating flow system as a whole.

[0031] Combine Figure 5 , Image 6 with Picture 9 As shown, the switch magnetic flux stator 11 is placed in the motor frame 7 by installing a magnetic isolation aluminum sleeve 9, the rotor core 3 is arranged in the switch magnetic flux stator 11 through the motor shaft 12, and the motor Bearings 13 are respectively provided at both ends of the shaft 12 in the axial direction. The front and rear bearings 13 are connected to the end cover 8 and the motor base 7 respectively.

[0032] See again figure 1 As shown, as a preferred embodiment of the present invention, six stator core tooth modules 1 are placed in the circumferential direction on the inner side of the mounting magnetic isolation aluminum sleeve 9, and each stator core tooth module 1 is correspondingly provided with four convex teeth 41 , A magnetic steel 5, a centralized armature winding 4, and a field winding 6, corresponding to the optimal number of protruding teeth on the rotor core is 19. According to application requirements, the number of stator core tooth module 1 can be set as a multiple of 6, the number of convex teeth 41 can be set to 4 or 6, and the best corresponding number of convex teeth of the rotor core 3 can be selected.

[0033] Refer to Picture 10 Shown is the topology of a traditional switched flux motor, which is mainly composed of figure 1 The stator core tooth module 1 corresponding to the motor of the present invention, the armature winding 4, the magnetic steel 5 and the rotor core 3 are composed of a stator-rotor tooth-pole combination structure which is generally adopted with 12 stator cores corresponding to 10 rotor cores. Compared with the present invention, the topological structure difference is that the stator core module of the motor of the present invention is a multi-tooth structure. Using finite element simulation analysis, under the same external dimensions, compare the output torque waveforms of the motor of the present invention and the traditional switched magnetic flux motor under one pole pitch, such as Picture 11 As shown, it can be seen that, compared with the traditional switched magnetic flux motor, the output torque of the multi-tooth stator core switched magnetic flux motor of the present invention has less pulsation and is more ideal as a direct drive source for electromechanical equipment. At the same time, see Figure 4 As shown, through the combined stator core structure of the present invention, the armature winding 6 can be wound directly on the stator core tooth module 1 after being integrally wound by the winding die. The assembly is simple and convenient, and overcomes the multi-tooth core stator winding. Difficult problem with the line.

[0034] Refer to Picture 12 As shown, the finite element simulation analysis is used to study the adjustment performance of the excitation winding 6 to the magnetic field of the motor of the present invention. The main magnetic field of the motor of the present invention is composed of the magnetic steel 5 and the excitation winding 6 to form a hybrid excitation magnetic field, which belongs to a hybrid excitation motor. The armature winding 4 generates turn-chain induced magnetic flux under the mixed excitation magnetic field. When the field winding 6 does not pass current, the electromagnetic field is completely generated by the magnetic steel 5, and the magnetic link of the armature winding 4 turns is Picture 12 The rated no-load flux linkage in, can be known from the knowledge of electrical machinery, when other electromagnetic parameters remain unchanged, the greater the amplitude of the winding chain, the greater the motor output torque and the stronger the load capacity. Therefore, direct current with a certain direction and amplitude is applied to the field winding 6, which can increase the amplitude of the flux linkage of the armature winding 4 and increase the load overload capacity of the motor. Picture 12 The said overload increases the magnetic flux linkage. On the other hand, when the field winding 6 is supplied with a direct current in the opposite direction to the increasing flux linkage, the amplitude of the winding flux linkage of the armature winding 4 is reduced. When the input rated current of the armature winding remains unchanged, The output torque of the motor is reduced, the output speed of the motor is increased, and the magnetic field is weakened to increase the speed, which can increase the speed adjustment range of the motor. Such as Picture 12 As shown, the field winding 6 has a significant adjustment effect on the amplitude of the flux linkage, thereby greatly expanding the overload range and speed adjustment range of the motor of the present invention, which has significant advantages for the servo direct drive of electromechanical equipment .

[0035] The above is only one embodiment of the present invention, not all or the only embodiment. Any equivalent changes made to the technical solution of the present invention by a person of ordinary skill in the art by reading the description of the present invention are the rights of the present invention. Covered by requirements.