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Permanent magnet motor comprising angle detection device

A permanent magnet motor, rotation angle detection technology, used in motors, electromechanical devices, transportation and packaging, etc., can solve the problems of coil short circuit, excessive lead reliability, risk, etc., to improve reliability and eliminate short circuit risks.

Inactive Publication Date: 2020-06-09
苏州昱泽智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this traditional resolver generally has an excitation coil, a sine coil and a cosine coil on each stator tooth, that is, each tooth has three different sets of coils, and there is a short circuit caused by mutual friction between the coils during production and use. risk
And there are 6 wires leading out from each stator tooth, too many wires lead to reliability risks

Method used

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  • Permanent magnet motor comprising angle detection device
  • Permanent magnet motor comprising angle detection device
  • Permanent magnet motor comprising angle detection device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0021] In this embodiment, take K=2, N=2, that is, in this embodiment, the permanent magnet motor body is a permanent magnet motor with a number of pole pairs of 4, the number of convex machines of the rotor of the rotation angle detection device is 2, and the permanent magnet rotor The rotor is installed on the same shaft to rotate coaxially, and the stator of the permanent magnet motor and the stator of the rotation angle detection device are installed in a common stator casing (not shown in the figure). figure 1 It is the control flowchart of the permanent magnet motor in the first embodiment of the present invention. The permanent magnet motor system is divided into two parts: the permanent magnet motor and the driving system. an angle (such as figure 2 Medium 101), figure 2 The horizontal axis corresponds to the mechanical angle that the shaft of the permanent magnet motor rotates. The angle conversion circuit multiplies the first angle by the coefficient Z (the number...

no. 2 example

[0023] In this embodiment, get S=8, promptly in this embodiment, the permanent magnet motor body is the permanent magnet motor that the number of pole pairs is 8, and the convex machine number of the rotor of the rotation angle detecting device is 1, and the permanent magnet rotor and the rotor are installed Rotating coaxially on the same shaft, the stator of the permanent magnet motor and the stator of the rotation angle detection device are installed in a common stator casing (not shown in the figure). The control flowchart of the permanent magnet motor in the second embodiment of the present invention can also refer to figure 1 , the permanent magnet motor system is divided into two parts, the permanent magnet motor and the drive system. The position signal output by the rotation angle detection device is connected to the input terminal of the decoding circuit, and the first angle is output after decoding (such as image 3 201), image 3 The horizontal axis corresponds to ...

no. 3 example

[0025] In this embodiment, M=4, that is, in this embodiment, the permanent magnet motor body is a permanent magnet motor with a pole pair number of 4, and the number of convex machines of the rotor of the rotation angle detection device is 4, and the permanent magnet rotor and the rotor are installed Rotating coaxially on the same shaft, the stator of the permanent magnet motor and the stator of the rotation angle detection device are installed in a common stator casing (not shown in the figure). Figure 4 It is the control flow diagram of the permanent magnet motor in the third embodiment of the present invention. The permanent magnet motor system is divided into two parts: the permanent magnet motor and the driving system. An angle signal (such as Figure 5 301), Figure 5 The horizontal axis corresponds to the mechanical angle that the shaft of the permanent magnet motor rotates. The period of the first angle signal is the same as that of the rotor magnetic field of the pe...

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Abstract

The invention provides a permanent magnet motor comprising an angle detection device. The permanent magnet motor comprises a permanent magnet motor body and a rotation angle detection device, whereinthe permanent magnet motor body comprises a motor stator and a permanent magnet rotor; magnetic poles of the permanent magnet rotor are alternately distributed along the circumferential direction; therotation angle detection device comprises a stator and a rotor; the permanent magnet rotor and the rotor are installed on the same shaft and rotate coaxially; the stator comprises a stator yoke and stator detection teeth located on the stator yoke; at most one coil is wound on each stator detection tooth; the inductance of each coil changes along with the change of the rotation angle of the rotorso as to be used for detecting the rotation angle of the rotor. The reliability of the permanent magnet motor is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a permanent magnet motor including an angle detection device. Background technique [0002] Industries such as electric vehicles, industrial automation, robotics, textile machinery, and aerospace are all inseparable from the high-performance control of rotating electrical machines, so motor rotation angle sensors are required, and they are often required to be used in high-temperature environments. [0003] At present, permanent magnet motors equipped with photoelectric angle encoders are widely used because they can easily detect the rotation angle of the motor, but the photoelectric angle encoders in this motor contain photoelectric components and semiconductor devices, so they cannot be used in In high temperature environment. [0004] The permanent magnet motor is equipped with a resolver to detect the rotation angle. Since it does not use a photoelectric conversion device, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/21H02K11/225
CPCH02K11/21H02K11/225Y02T10/64
Inventor 高翔
Owner 苏州昱泽智能科技有限公司
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