CN206195570U - Disk does not have iron core magnetic flow modulation motor - Google Patents

Abstract

The invention relates to a disc type ironless magnetic flux modulation motor, which relates to the field of disc motors. The invention solves the problems of high loss of the existing disc-type magnetic flux modulation motor, poor mechanical performance of the magnetic modulation block, heavy stator core and complex structure. In the utility model, N stators and N+1 rotor disks are staggered, and there is an air gap between the stator and the rotor disks. The stator includes a set of windings and two non-magnetic armature disks, and the annular winding is packaged in two non-conductive armature disks. Between the magnetic armature discs, each non-magnetic armature disc is provided with N _s grooves, and the N _s grooves are evenly distributed along the circumference of the non-magnetic armature disc, and each groove is provided with a Magnetic adjustment block; the 1st and N+1th rotor discs are equipped with 2P ₂ magnets on the side close to the stator, and the two sides of the 2nd to Nth rotor discs are equipped with 2P ₂ pieces of magnetic steel, P ₂ represents the number of pole pairs of the magnetic steel on one side of each rotor disk; the number of pole pairs P ₁ of the magnetic field generated by each set of windings, and P ₁ +P ₂ =N _s . Mainly used for power transmission.

Description

Disk type ironless flux modulation motor

technical field

The utility model relates to the field of disc motors.

Background technique

In recent years, with the continuous development of my country's industrial level, there are higher requirements for power transmission in industry. As a direct drive system that replaces traditional complex transmission, it is gradually attracting people's attention. In the power transmission of traditional gears and motors, not only the system is bulky and the reliability is low, but the wear of the gears brings problems such as friction loss, regular maintenance, and large vibration and noise. Magnetic gear is a gear that relies on magnetic transmission. It not only eliminates traditional mechanical friction loss, but also greatly reduces vibration and noise because there is no contact between gears. It requires no maintenance and has high reliability. Based on the principle of magnetic gears, a series of magnetic flux modulation motors with reliable structure and excellent performance that can be applied to direct drive applications have been derived.

Similar to conventional motors, flux-modulated motors also come in radial-flux and disc versions. Compared with the radial type, the disc motor has the characteristics of small size, simple structure, and large torque at low speed. However, the stator windings of the existing disc-type magnetic flux modulation motors are all wound on the stator core, which not only increases the loss of the motor and makes the weight of the whole machine larger, but also because of the existence of the magnetic flux modulation ring with the magnetic flux modulation function, the motor The structure is relatively complicated, and non-magnetic materials such as epoxy resin need to be filled between the magnetic rings, which deteriorates its mechanical stability and reduces the reliability of the whole machine.

Utility model content

The utility model is to solve the problems of high loss of the existing disc-type magnetic flux modulation motor, poor mechanical performance of the magnetic modulation block, heavy stator core and complex structure. The utility model provides a disc-type ironless magnetic flux modulation motor.

Disk type ironless flux modulation motor, which includes N stators, N+1 rotor discs, rotating shaft and housing, N stators and N+1 rotor discs are located in the housing, and N stators are fixed On the inner wall of the housing, N+1 rotor discs are rotationally connected to the shaft through interference fit, and N stators, N+1 rotor discs are coaxial with the housing, N stators and N+1 rotors The disks are staggered, and there is an air gap between the stator and rotor disks; N is an integer greater than or equal to 1;

Each stator includes a set of windings and two non-magnetically conductive armature disks, and the winding is packaged between the two non-magnetically conductive armature disks.

Each non-magnetically conductive armature disk is provided with N _s grooves, and the N _s grooves are evenly distributed along the circumference of the non-magnetically conductive armature disk, and each groove is provided with a magnetic adjustment block;

N+1 rotor disks are respectively defined as the 1st to N+1th rotor disks, wherein, the 1st and N+1th rotor disks are equipped with 2P ₂ on the side close to the stator 2 magnets, and 2P ₂ magnets are evenly distributed in the circumferential direction along the side where they are located. Both sides of the second to Nth rotor discs are equipped with 2P ₂ magnets, and the 2P magnets on the two sides The magnetic steel is set in mirror image, and 2P ₂ magnetic steels on each side are evenly distributed along the circumference of the side where they are located;

P ₂ represents the number of pole pairs of the magnetic steel on one side of each rotor disk; the number of pole pairs P ₁ of the magnetic field generated by each set of windings is energized, and P ₁ +P ₂ =N _s .

The non-magnetically conductive armature disc is an epoxy resin armature disc.

The material property of the magnetic modulation block is ferromagnetic.

The beneficial effect brought by the utility model is that the disc-type coreless magnetic flux modulation motor proposed by the utility model is an axial flux, that is, a disc type, and the stator adopts a coreless form (that is, an armature winding disc), There are grooves on the non-conductive armature disk, and the magnetic modulation block is placed in these grooves to improve the mechanical performance of the magnetic modulation block; the magnetic modulation block is combined with the armature winding disk, compared with the existing disk type magnetic flux modulation The motor not only solves the technical problem of the non-magnetic material filled between the magnetic adjustment blocks, but also eliminates the disadvantages of poor mechanical performance and poor reliability caused by it.

The motor stator of the utility model adopts an iron-free structure, the weight of the motor is greatly reduced, the specific power is higher, and the stator structure is simplified. And because there is no iron core in the stator, the hysteresis loss and eddy current loss generated are eliminated, and the efficiency of the motor has been greatly improved. With its special rotor disc form, the disc motor is easier to make a multi-pole motor. Through the flux modulation of the magnetic block, the power and torque density of the motor are enhanced. In the case of cost reduction, it has stable low-speed The large torque output capability has extremely high application value in direct drive fields such as electric vehicles.

The disc-type coreless magnetic flux modulation motor described in the utility model can be expanded into a single stator and single rotor form, a double stator and single rotor form, and a multi-disk form when N takes different values.

The connection form of any winding as long as it complies with The relational formula, ie the combination of P ₁ +P ₂ =N _s , should be within the protection scope of the present utility model.

Description of drawings

Fig. 1 is the main cross-sectional view of the disc-type ironless flux modulation motor described in the utility model;

Fig. 2 is when N is 1, the main sectional view of described disc type ironless flux modulation motor;

Figure 3 is an expanded view of the stator and rotor disks when N is 1;

Fig. 4 is a structural schematic diagram of the 1st or N+1th rotor disc;

Figure 5 is a front view of a non-magnetically permeable armature disc;

Fig. 6 is the distribution diagram of the magnetic modulation blocks arranged on the non-magnetically permeable armature disc;

Fig. 7 is a schematic structural diagram of the winding; wherein, A represents current input, and X represents current output.

detailed description

Specific Embodiment 1: Refer to FIG. 1 to FIG. 7 to illustrate this embodiment. The disk-type ironless flux modulation motor described in this embodiment includes N stators 1, N+1 rotor discs 2, and a rotating shaft 3. and housing 4, N stators 1 and N+1 rotor discs 2 are all located in housing 4, N stators 1 are fixed on the inner wall of housing 4, and N+1 rotor discs 2 pass through the interference Cooperate with the rotating shaft 3 to rotate, and N stators 1, N+1 rotor disks 2 are coaxial with the housing 4, N stators 1 and N+1 rotor disks 2 are arranged alternately, the stator 1 and the rotor disk There is an air gap between 2; N is an integer greater than or equal to 1;

Each stator 1 includes a set of windings 1-1 and two non-magnetically conductive armature disks 1-2, the winding 1-1 is packaged between the two non-magnetically conductive armature disks 1-2,

Each non-magnetically conductive armature disk 1-2 is provided with N _s grooves, and the N _s grooves are evenly distributed along the circumferential direction of the non-magnetically conductive armature disk 1-2, and each groove is provided with an adjusting Magnetic block 1-2-1;

N+1 rotor disks 2 are respectively defined as the 1st to N+1th rotor disks 2, wherein, the 1st and N+1th rotor disks 2 are both on the side close to the stator 1 There are _two 2P magnetic steels 2-1, and the _two 2P magnetic steels 2-1 are evenly distributed in the upper direction along the side where they are located, and the two sides of the second to Nth rotor discs 2 are provided with 2P ₂ magnetic steels 2-1, the magnetic steel 2-1 on the two sides are mirror images, and the 2P ₂ magnetic steels 2-1 on each side are evenly distributed along the circumference of the side where they are located;

P ₂ represents the number of pole pairs of the magnetic steel 2-1 on one side of each rotor disk 2; the number of pole pairs P ₁ of the magnetic field generated by each set of windings 1-1, and P ₁ +P ₂ =N _s .

In this embodiment, the stator 1 described in the utility model has only the winding 1-1 without an iron core, and the winding 1-1 is realized by the prior art, and the stator winding coils are all packaged on the stator armature disk by non-extracting magnetic materials, namely: In the non-magnetic armature disk, each coil is fan-shaped, and the coil is wound by enameled wire or other insulating material wires, the cross section is flat, the connection method is a single-layer chain cross arrangement, and the connection between the windings is A For example, refer to Fig. 7, B and C are the same, after each set of winding 1-1 is energized, a P ₁ antipolar magnetic field is generated in the axial direction.

The magnetic steel 2-1 can be pasted on the rotor disc 2 of the motor using an adhesive.

According to the principle of magnetic flux modulation: the relationship between P ₁ , P ₂ and N _s is: P ₁ = |mP ₂ +kN _s |, where m=1, 3, 5,..., +∞; k=0, ±1, ±2,...,±∞;

When m=1, k=-1, the air gap magnetic field modulated by the magnetic modulation block 1-2-1 is the strongest, and the magnetic field space harmonic rotation speed is Since the magnetic adjustment block 1-2-1 is fixed on the armature winding disk, the magnetic adjustment block 1-2-1Ω _s is 0, and the ratio of the stator magnetic field speed Ω _r to the magnetic field space harmonic rotation speed Ω _m,k is The transmission ratio G _r is:

The high-speed rotating magnetic field generated by the inner stator is modulated by the magnetic modulation block 1-2-1, and a multi-pole low-speed magnetic field with the same number of poles as the rotor poles will be generated in the air gap. The generated harmonic magnetic field cooperates with the magnetic pole of the magnetic steel 2-1 to complete the torque output.

When N is equal to 1, there is only one layer of air gap on one side of the motor, which greatly reduces the problems in manufacturing and assembly, and has a simple structure and low cost, which improves the reliability of the whole machine.

Specific embodiment 2: Refer to Fig. 1 to Fig. 7 to illustrate this embodiment, the difference between this embodiment 1 and the disk-type ironless flux modulation motor described in specific embodiment 1 is that the non-magnetically permeable armature disc 1-2 is the epoxy resin armature disc.

In this embodiment, each non-magnetically conductive armature disc 1-2 is provided with N _s grooves, and the N _s grooves are evenly distributed along the circumferential direction of the non-magnetically conductive armature disc 1-2. There is a magnetic adjustment block 1-2-1; the epoxy resin is non-magnetic, which can be regarded as spatially, and the magnetic and non-magnetic materials are arranged at intervals on the non-magnetic armature disc 1-2, which achieves Magnetic flux modulation.

The non-magnetically conductive armature disc 1-2 can be directly cast from epoxy resin, and has relatively high mechanical strength.

Specific embodiment three: Referring to Fig. 1 to Fig. 7 to illustrate this embodiment, the difference between this embodiment and the disk-type ironless flux modulation motor described in specific embodiment one or two is that the magnetic modulation block 1- The material characteristic of 2-1 is ferromagnetic property.

Claims (3)

1. disc type iron core-free Flux modulation motor, it includes N number of stator (1), N+1 rotor discs (2), rotating shaft (3) and housing (4), N number of stator (1) and N+1 rotor discs (2) are respectively positioned in housing (4), and N number of stator (1) is each attached to housing (4) inwall On, N+1 rotor discs (2) is rotated with rotating shaft (3) by interference fit and is connected, and N number of stator (1), N+1 rotor discs (2) and housing (4) is coaxial, N number of stator (1) and N+1 rotor discs (2) are staggered, between stator (1) and rotor discs (2) There is air gap；N is the integer more than or equal to 1；

Characterized in that, each described stator (1) includes a set of winding (1-1) and two non-magnetic armature discs (1-2), winding (1-1) is encapsulated between two non-magnetic armature discs (1-2),

Each non-magnetic armature disc (1-2) is provided with N_sIndividual groove, N_sIndividual groove is along the circumferential uniform of non-magnetic armature disc (1-2) Distribution, is provided with an adjustable magnetic block (1-2-1) in each groove；

N+1 rotor discs (2) is respectively defined as the 1st to the N+1 rotor discs (2), wherein, the 1st and N+1 turns Sub- disk (2), 2P is being equipped with that side of stator (1)₂Individual magnet steel (2-1), and 2P₂Individual magnet steel (2-1) is along its institute That side on be circumferentially uniformly distributed, two sides of the 2nd to n-th rotor discs (2) are equipped with 2P₂Individual magnet steel (2-1), magnet steel (2-1) mirror image on two sides is set, and the 2P that each side is provided with₂Individual magnet steel (2-1), along where it Side be circumferentially uniformly distributed；

P₂Represent a number of pole-pairs for the magnet steel of side (2-1) of each rotor discs (2)；Often set winding (1-1) is powered and produces magnetic The number of pole-pairs P of field₁, and P₁+P₂=N_s。

2. disc type iron core-free Flux modulation motor according to claim 1, it is characterised in that described non-magnetic armature disc (1-2) is epoxy resin armature disc.

3. disc type iron core-free Flux modulation motor according to claim 1 and 2, it is characterised in that described adjustable magnetic block (1- Material property 2-1) is ferromagnetic property.