Structure for improving flux linkage of permanent magnet motor

Abstract

The utility model relates to the technical field of permanent magnet motors, in particular to a structure for improving the flux linkage of a permanent magnet motor, which can increase the flux linkage and increase the power density by adding V-shaped magnetic shoe grooves in a rotor on the basis of surface-mounted magnetic shoes, and also has better sine wave flux density waveform because the outer side is provided with the surface-mounted magnetic shoes; comprising a stator, the stator is installed on a permanent magnet motor, and the motor structure adopts an inner rotor twelve-groove ten-stage structure; and the rotor is rotationally mounted on the stator and generates magnetic force.

Description

Technical Field

[0001] This utility model relates to the technical field of permanent magnet motors, and in particular to a structure for improving the flux linkage of a permanent magnet motor. Background Technology

[0002] There are two main types of brushless motor rotor magnetic circuit structures: built-in and surface-mounted. Built-in structures have directional magnetic tile slots inside the rotor, with structures such as straight lines and V-shapes. The advantage of built-in magnetic tiles is that they can be used in high-speed motors, with the magnetic tiles inserted inside the rotor core. The advantage of surface-mounted magnetic tiles is that they produce a better sinusoidal magnetic flux density waveform.

[0003] Existing permanent magnet motors, such as the stator core and permanent magnet motor disclosed in utility model patent application number 202420506847.6, mainly include a housing and windings. The windings are installed inside the stator core. Multiple sets of stator yoke slots are opened inside the outer ring of the stator core. Thermally conductive silicone is poured into the upper and lower ends of the windings and into the stator yoke slots, and after curing, it forms a noise-reducing and heat-dissipating colloid. In use, while minimizing the impact on the magnetic field lines, the stator yoke slots are formed by slotting the stator core in a specific shape, and thermally conductive silicone connecting the front and rear ends of the stator windings is poured in to form a noise-reducing and heat-dissipating colloid, thereby reducing noise and increasing heat dissipation.

[0004] However, existing surface-mount magnetic tiles require the addition of a stainless steel protective sleeve, which reduces their magnetic properties. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a structure that improves the magnetic flux of a permanent magnet motor by adding V-shaped magnetic tile grooves inside the rotor when using a surface-mounted magnetic tile foundation. This increases the magnetic flux and power density. At the same time, since the outer side is a surface-mounted magnetic tile, it also has a better sinusoidal magnetic flux density waveform.

[0006] This utility model discloses a structure for improving the magnetic flux linkage of a permanent magnet motor, including a stator mounted on the permanent magnet motor, the motor structure adopting an internal rotor twelve-slot ten-stage structure; it also includes a rotor, the rotor being rotatably mounted on the stator and generating magnetic force; the rotor is mounted inside the stator, and wires are wound around the stator, and after being energized, the coils generate magnetic force to drive the rotor to rotate.

[0007] Preferably, the rotor includes a rotor core and ten sets of surface-mounted magnetic tiles. The rotor core is rotatably mounted on a permanent magnet motor. Ten sets of grooves are opened on the rotor core, and the ten sets of surface-mounted magnetic tiles are respectively installed in the ten sets of grooves of the rotor core. The energized coil generates magnetic force to drive the surface-mounted magnetic tiles to rotate, and the surface-mounted magnetic tiles drive the rotor core to rotate, and the rotor core outputs power.

[0008] Preferably, the rotor also includes twenty sets of square magnetic tiles, and the rotor core has ten sets of V-shaped grooves. Two sets of square magnetic tiles are installed in each set of V-shaped grooves, and the installation angle of the two sets of square magnetic tiles is 127.5°. By setting twenty sets of square magnetic tiles, the magnetic force of the rotor is enhanced, and the magnetic performance is not reduced after adding a stainless steel protective sleeve.

[0009] Preferably, the square magnetic tile has a width of 8.7 mm and a thickness of 3 mm.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: the rotor is installed inside the stator, the wire is wound around the stator, and the coil generates magnetic force to drive the rotor to rotate after being energized. Attached Figure Description

[0011] Figure 1 This is a front view structural diagram of the present invention;

[0012] Figure 2 This is a front view structural schematic diagram of the rotor of this utility model;

[0013] Figure 3 This is a front view structural diagram of the rotor core of this utility model.

[0014] The attached diagram is labeled as follows: 01, stator; 02, rotor; 21, rotor core; 22, surface-mounted magnet; 23, square magnet. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0016] Example 1

[0017] This utility model discloses a structure for improving the magnetic flux linkage of a permanent magnet motor, comprising a stator 01 mounted on the permanent magnet motor, the motor structure adopting an internal rotor twelve-slot ten-stage structure; and a rotor 02 rotatably mounted on the stator 01 and generating magnetic force; the rotor 02 includes a rotor core 21 and ten sets of surface-mounted magnetic tiles 22, the rotor core 21 being rotatably mounted on the permanent magnet motor, the rotor core 21 having ten sets of grooves, and the ten sets of surface-mounted magnetic tiles 22 being respectively installed in the ten sets of grooves of the rotor core 21; during operation, the rotor 02 is mounted inside the stator 01, wires are wound around the stator 01, the energized coil generates magnetic force to drive the surface-mounted magnetic tiles 22 to rotate, the surface-mounted magnetic tiles 22 drive the rotor core 21 to rotate, and the rotor core 21 outputs power.

[0018] Example 2

[0019] like Figures 1 to 3 As shown, this utility model provides a structure for improving the magnetic flux of a permanent magnet motor, based on embodiment 1. The rotor 02 further includes twenty sets of square magnetic tiles 23, and the rotor core 21 has ten sets of V-shaped grooves. Two sets of square magnetic tiles 23 are installed in each set of V-shaped grooves, and the installation angle of the two sets of square magnetic tiles 23 is 127.5°. The square magnetic tiles 23 also have a width of 8.7 mm and a thickness of 3 mm. When it is working, the rotor 02 is installed in the stator 01, and the wires are wound around the stator 01. The energized coil generates magnetic force to drive the surface magnetic tiles 22 to rotate. The surface magnetic tiles 22 drive the rotor core 21 to rotate, and the rotor core 21 outputs power. By setting twenty sets of square magnetic tiles 23, the magnetic force of the rotor 02 is enhanced, and the magnetic performance is not reduced after adding a stainless steel protective sleeve.

[0020] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A structure for improving the flux linkage of a permanent magnet motor, comprising a stator (01) mounted on the permanent magnet motor, wherein the motor structure adopts an internal rotor twelve-slot ten-stage structure; characterized in that, It also includes a rotor (02), which is rotatably mounted on the stator (01) and generates magnetic force.

2. The structure for improving the flux linkage of a permanent magnet motor as described in claim 1, characterized in that, The rotor (02) includes a rotor core (21) and ten sets of surface-mounted magnetic tiles (22). The rotor core (21) is rotatably mounted on a permanent magnet motor. Ten sets of grooves are opened on the rotor core (21), and the ten sets of surface-mounted magnetic tiles (22) are respectively installed in the ten sets of grooves of the rotor core (21).

3. The structure for improving the flux linkage of a permanent magnet motor as described in claim 2, characterized in that, The rotor (02) also includes twenty sets of square magnetic tiles (23). Ten sets of V-shaped grooves are opened on the rotor core (21). Two sets of square magnetic tiles (23) are installed in each set of V-shaped grooves. The installation angle of the two sets of square magnetic tiles (23) is 127.5°.

4. The structure for improving the flux linkage of a permanent magnet motor as described in claim 3, characterized in that, The square magnetic tile (23) has a width of 8.7 mm and a thickness of 3 mm.

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