Machining method for permanent magnetic direct current brushless motor

A brushless motor, permanent magnet DC technology, applied in electrical components, electromechanical devices, etc., can solve the problems of precise control of magnetic flux and speed, poor consistency of motor performance, uncertainty of motor speed, etc., to improve motor speed and signal distortion. The effect of reducing the resistance and weakening the running resistance of the magnetic flux

Inactive Publication Date: 2016-12-07
XUZHOU NANPU ELECTRICAL TECH
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AI Technical Summary

Problems solved by technology

Ordinary stator windings, although the magnetic flux and rotational speed can be adjusted by changing the number of coil turns, cannot achieve precise control of the internal magnetic flux and rotational speed of the motor. The Hall signal is greatly affected by it, and the motor rotational speed has uncertainty. Larger errors lead to poor consistency of motor performance and increased damage rate

Method used

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  • Machining method for permanent magnetic direct current brushless motor

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing.

[0012] like figure 1 Shown is the structural diagram of the embodiment of the present invention, including: stator, the stator is composed of N silicon steel sheets 2 stacked, and the silicon steel sheets 2 are fixed by positioning steel nails 1; stator slots 5 are evenly distributed on the stator, and the stator slots 5 A Hall slot 4 is formed in the middle of the notch, and a Hall element is embedded in the Hall slot 4; the present invention processes a semicircular acceleration slot with magnetic flux control on the middle position of the slot teeth between two adjacent stator slots Port 3, the acceleration slot 3 with magnetic flux control forms a semicircular partition between two adjacent stator slots, and forms a local eddy current magnetic field in the acceleration slot 3 with magnetic flux control.

[0013] The stator generally has different height specifications ...

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Abstract

The invention provides a machining method for a permanent magnetic direct current brushless motor. The machining method comprises the steps that a semicircular magnetic flux control acceleration notch is machined at the middle position of a groove tooth of two adjacent stator grooves, semicircular isolation is formed between the two adjacent stator grooves through the magnetic flux control acceleration notch, and a local eddy magnetic field is formed in the magnetic flux control acceleration notch. By means of the machining method, the magnetic flux and rotation speed can be precisely controlled, the control difficulty is lowered, meanwhile, the Hall signal collection precision is improved, the Hall signal reliability is guaranteed, and motor consistency is improved.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a processing method for a permanent magnet DC brushless motor. Background technique [0002] At present, the permanent magnet DC brushless motor mainly adopts square wave control program, and recently developed sine wave control program, but all have 12-slot stators, and the magnetic flux is arranged according to the stator windings. Although ordinary stator windings can adjust the magnetic flux and rotational speed by changing the number of coil turns, it is impossible to achieve precise control of the internal magnetic flux and rotational speed of the motor. The Hall signal is greatly affected by it, and the motor rotational speed has uncertainty. Larger errors will lead to poor consistency of motor performance and increased damage rate. Contents of the invention [0003] Purpose of the invention: In order to solve the above technical problems, achieve precise control of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/00H02K29/08
CPCH02K29/00H02K29/08
Inventor 滕义松滕磊
Owner XUZHOU NANPU ELECTRICAL TECH
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