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Skewed slot anomalistic permanent magnet synchronous motor

A permanent magnet synchronous motor and chute technology, applied in synchronous machine parts, magnetic circuits, electric components, etc., can solve problems such as error-prone noise, torque drop, and difficulty in the application environment of high-power electric vehicles, and solve heat accumulation. , The effect of improving the working torque

Active Publication Date: 2015-05-27
深圳市良益实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Asynchronous motors are characterized in that they can be used normally in various regions or in bad weather, with low cost and convenient production. However, the working efficiency of asynchronous motors is too low and the energy consumption is large, so it is not easy to be used in the application of high-power electric vehicles surroundings
[0004] 2. Switched reluctance motor, this type of motor has the advantages of large torque and low cost, but the controller of switched reluctance motor is not stable, easy to make mistakes and has a lot of noise. In addition, there is vibration in the working process of switched reluctance motor Larger, less efficient, etc., so it is usually more suitable as a drum motor
Therefore, if this type of motor is applied to an electric vehicle, since the electric vehicle will have a long-term climbing application environment, at this time, the temperature of this type of motor will increase due to continuous high-load operation, and the torque will decrease, which will eventually affect the performance of the electric vehicle. normal driving

Method used

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  • Skewed slot anomalistic permanent magnet synchronous motor
  • Skewed slot anomalistic permanent magnet synchronous motor
  • Skewed slot anomalistic permanent magnet synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In the above, the magnet 5 is surrounded by the bottom surface 52 and the two side surfaces 51 which are successively connected; Correspondingly, and when the magnet 5 is put into the magnet accommodating cavity 42 , the connecting ends of the two side surfaces 51 correspondingly extend to the through groove 43 on the side surface of the rotor 4 .

[0033] In this embodiment, the use of approximately triangular-shaped magnets can not only increase the magnetic area, but also increase the refraction point of the magnetic column line magnetic circuit, which can effectively increase the torque, so that it can be compared with other flat and tile-shaped motors under the same power. Compared with the magnet, it produces a larger torque.

Embodiment 2

[0035] In the above, the bottom surface 52 of the magnet 5 is convex in an arc shape; the bottom surface 52 is connected to the two side surfaces 51 through the thick surface 53 .

[0036] Through a large number of experiments, it is found that increasing the arc of the bottom surface of the magnet can effectively solve the problem of high heat generation in the motor process. Increasing the arc bottom surface can mainly reduce the magnetic pulsation, and then achieve the purpose of reducing the heat generation. In this embodiment, the bottom surface of the magnet is further optimized into a convex arc shape, which can better ensure the effect and consume more energy, because the magnetic field magnetic circuit is unbalanced, strong and weak, and the arc shape is designed as What is important is the balance of the magnetic field and the above-mentioned effects.

Embodiment 3

[0038] Among the above, it has been obtained through a large number of experiments that the effect of designing the thick surface 53 of the magnet with a width of 1-4mm is the best.

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Abstract

The invention provides a skewed slot anomalistic permanent magnet synchronous motor. The motor comprises a stator, a rotor and a magnet, wherein a magnet containing cavity is arranged on the rotor; a straight slot communicated with the magnet containing cavity is formed in the side surface of the rotor according to each magnet containing cavity. Compared with a permanent magnet synchronous motor with a common structure, which can produce hot stack during use, the skewed slot anomalistic permanent magnet synchronous motor has the benefits that by being provided with the straight slot communicated with the magnet containing cavity in the rotor, magnetic resistance cannot be closed after the magnet is mounted on the rotor, and the problem of hot stack is solved. Compared with a common permanent magnet synchronous motor which can reach 500N.M, 100KW and 3000RPM, the skewed slot anomalistic permanent magnet synchronous motor adopting the structure can reach 750N.M, 100KW and 3000RPM, so that the structure can effectively improve the operation torque of the motor.

Description

technical field [0001] The invention relates to a motor, in particular to a chute special-shaped permanent magnet synchronous motor. Background technique [0002] There are many types of motors available. From now on, four commonly used motors, including asynchronous motors, switched reluctance motors, DC excitation motors and permanent magnet synchronous motors, are listed to introduce their respective advantages and disadvantages in combination with the application environment of electric vehicles: [0003] 1. Asynchronous motors are characterized in that they can be used normally in various regions or in bad weather, with low cost and convenient production. However, the working efficiency of asynchronous motors is too low and the energy consumption is large, so it is not easy to be used in the application of high-power electric vehicles environment. [0004] 2. Switched reluctance motor, this type of motor has the advantages of large torque and low cost, but the controll...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K21/02
CPCH02K1/165H02K1/278H02K21/02
Inventor 陈昭肃薛云华
Owner 深圳市良益实业有限公司
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