Rotor structure of permanent magnet auxiliary synchronous reluctance motor

Abstract

The utility model relates to the technical field of permanent magnet auxiliary synchronous reluctance motors, and discloses a rotor structure of a permanent magnet auxiliary synchronous reluctance motor, which comprises a rotor provided with six groups of first mounting grooves, six groups of second mounting grooves and six groups of third mounting grooves. And each group of the first mounting grooves, the second mounting grooves and the third mounting grooves comprises two symmetrically distributed first mounting grooves, second mounting grooves and third mounting grooves, and each group of the first mounting grooves, the second mounting grooves and the third mounting grooves are axially arranged at equal intervals by taking the center of the rotor as the axis. According to the utility model, six groups of first mounting grooves, second mounting grooves and third mounting grooves are arranged, and each group of mounting grooves are arranged in a V shape, so that larger salient pole ratio and reluctance torque are obtained; and the clamping grooves are formed, so that the magnetic steel mounting positions of the first mounting groove, the second mounting groove and the third mounting groove are rectangular, the magnetic steel is convenient to process and manufacture, and the magnetic steel processing inconvenience caused by special-shaped grooves is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of permanent magnet assisted synchronous reluctance motors, and in particular relates to a rotor structure of a permanent magnet assisted synchronous reluctance motor. Background Art

[0002] The permanent magnet assisted synchronous reluctance motor is a motor that combines the advantages of permanent magnets and reluctance synchronous motors. The motor adopts a combination structure of permanent magnets and iron cores, and also utilizes the reluctance effect, thereby achieving high efficiency, high power density and high precision. The permanent magnet provides high magnetic energy density and magnetic field stability. In addition, the reluctance synchronous motor has good anti-interference, high efficiency and low noise, which further improves the performance of the permanent magnet assisted synchronous reluctance motor. The permanent magnet assisted synchronous reluctance motor is widely used in industrial automation, electric vehicles, wind power generation and other fields, and is gradually replacing traditional asynchronous motors and DC motors.

[0003] The current permanent magnet assisted synchronous reluctance motor rotor structure mostly adopts an arc or U-shaped structure. Using this structure, it is impossible to obtain a larger salient pole ratio to obtain a larger reluctance torque. At the same time, the arc and U-shaped structures require magnets of adapted shapes, which makes the processing of the magnets difficult. In addition, the arc rotor structure has no supporting structure in the middle, resulting in low overall strength.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a rotor structure of a permanent magnet assisted synchronous reluctance motor, by setting six groups of first mounting slots, second mounting slots and third mounting slots, and making the mounting slots of each group arranged in a V-shape, a larger salient pole ratio is obtained, thereby obtaining a larger reluctance torque; the clamping slots are set so that the magnetic steel installation positions of the first mounting slots, the second mounting slots and the third mounting slots are rectangular, which is convenient for the processing and manufacturing of the magnetic steel and avoids the inconvenience of magnetic steel processing caused by special-shaped slots.

[0006] The basic concept of the technical solution adopted in this utility model is:

[0007] A rotor structure of a permanent magnet assisted synchronous reluctance motor includes a rotor, wherein a first mounting slot, a second mounting slot and a third mounting slot are provided on the rotor, and six groups of the first mounting slot, the second mounting slot and the third mounting slot are arranged, and each group of the first mounting slot, the second mounting slot and the third mounting slot includes two symmetrically distributed ones, and each group of the first mounting slot, the second mounting slot and the third mounting slot are axially arranged at equal intervals with the center of the rotor as the axis.

[0008] As a preferred implementation of the present utility model, the length of the first mounting groove is greater than the length of the second mounting groove, and the length of the second mounting groove is greater than the length of the third mounting groove.

[0009] As a preferred implementation of the present invention, the first installation slot, the second installation slot and the third installation slot are all provided with card slots on their sides.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model provides six groups of first mounting grooves, second mounting grooves and third mounting grooves, and arranges the mounting grooves of each group in a V-shape, thereby obtaining a larger salient pole ratio and thus obtaining a larger magnetic resistance torque;

[0012] The card slots are arranged so that the magnetic steel installation positions of the first installation slot, the second installation slot and the third installation slot are rectangular, which is convenient for the processing and manufacturing of the magnetic steel and avoids the inconvenience of magnetic steel processing caused by special-shaped slots;

[0013] Each group of symmetrically located mounting grooves are not connected to each other and form a reinforcement structure, thereby making the rotor structure more firm and stable.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a rotor structure of a permanent magnet assisted synchronous reluctance motor of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the card slot of the utility model.

[0017] In the figure: 1, rotor; 2, first mounting slot; 3, second mounting slot; 4, third mounting slot; 5, clamping slot. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0019] Embodiment 1:

[0020] like Figure 1 to Figure 2As shown, a rotor structure of a permanent magnet assisted synchronous reluctance motor includes a rotor 1, on which a first mounting groove 2, a second mounting groove 3 and a third mounting groove 4 are opened, and six groups of the first mounting groove 2, the second mounting groove 3 and the third mounting groove 4 are arranged, each group of the first mounting groove 2, the second mounting groove 3 and the third mounting groove 4 includes two symmetrically distributed ones, and each group of the first mounting groove 2, the second mounting groove 3 and the third mounting groove 4 is axially arranged with equal intervals around the center of the rotor 1.

[0021] Embodiment 2:

[0022] like Figure 1 to Figure 2 As shown, in a specific embodiment, the length of the first mounting slot 2 is greater than the length of the second mounting slot 3, and the length of the second mounting slot 3 is greater than the length of the third mounting slot 4. In this configuration, the first mounting slot 2, the second mounting slot 3, and the third mounting slot 4 are all used to install magnetic steel, and each group of the first mounting slot 2, the second mounting slot 3, and the third mounting slot 4 in a symmetrical position are not connected, and a reinforcement structure is formed, so that the overall strength of the rotor structure is enhanced.

[0023] Embodiment 3:

[0024] like Figure 1 to Figure 2 As shown, further, a clamping slot 5 is provided on the side of the first mounting slot 2, the second mounting slot 3 and the third mounting slot 4. In this configuration, the clamping slot 5 is provided to make the magnetic steel installation position of the first mounting slot 2, the second mounting slot 3 and the third mounting slot 4 rectangular, which is convenient for the processing and manufacturing of the magnetic steel and avoids the inconvenience of magnetic steel processing caused by the special-shaped slot.

Claims

1. A rotor structure of a permanent magnet assisted synchronous reluctance motor, comprising a rotor (1), characterized in that: The rotor (1) is provided with a first mounting groove (2), a second mounting groove (3) and a third mounting groove (4); the first mounting groove (2), the second mounting groove (3) and the third mounting groove (4) are arranged in six groups; each group of the first mounting groove (2), the second mounting groove (3) and the third mounting groove (4) includes two symmetrically distributed grooves; and each group of the first mounting groove (2), the second mounting groove (3) and the third mounting groove (4) is axially arranged at equal intervals with the center of the rotor (1) as the axis.

2. The rotor structure of a permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The length of the first mounting groove (2) is greater than the length of the second mounting groove (3), and the length of the second mounting groove (3) is greater than the length of the third mounting groove (4).

3. The rotor structure of a permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The first installation slot (2), the second installation slot (3) and the third installation slot (4) are all provided with a clamping slot (5) on their sides.

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