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Method for manufacturing three-phase symmetric printed winding

A technology of printing windings and manufacturing methods, applied in the shape/style/structure of winding conductors, electric components, manufacturing motor generators, etc., to achieve the effects of good heat dissipation, small torque ripple, and high power-to-volume ratio

Inactive Publication Date: 2014-12-17
GUANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Apparently the existing wound disc three-phase windings cannot meet these requirements

Method used

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  • Method for manufacturing three-phase symmetric printed winding
  • Method for manufacturing three-phase symmetric printed winding
  • Method for manufacturing three-phase symmetric printed winding

Examples

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] Making punches: such as figure 1 As shown, on a copper (or aluminum) alloy sheet with a uniform thickness (0.10 mm to 0.35 mm), a stamping sheet 1001 is produced by using a die or chemical etching. There are 3N punching grooves 1002 evenly distributed on the punching sheet 1001, and these punching grooves 1002 are evenly distributed around the axis and have the same shape. Three small-diameter positioning holes 1010, 1011 and 1012 are located in the lower left corner, and three large-diameter positioning holes 1020, 1021 and 1022 are located in the upper right corner. The shape of the punching groove 1002 is composed of five connected segments: straight line segment-involute or circular arc segment-straight line segment-involute or circular arc segment-straight line segment from inside to outside.

[0036] The remaining part between the two...

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PUM

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Abstract

The invention discloses a method for manufacturing a three-phase symmetric printed winding, and particularly relates to methods for manufacturing three-phase symmetry printed windings with extremely low torque pulsation. The method includes manufacturing group sheets from stamped steel; manufacturing a closed printed winding from the group sheets; removing six conductors of the uppermost layer and six conductors of the lowermost layer of the printed winding by means of shearing to acquire a distributed winding U+, a distributed winding U-, a distributed winding V+, a distributed winding V-, a distributed winding W+ and a distributed winding W-; connecting the distributed winding U+ with the distributed winding U- in series or parallel to obtain a U-phase winding; acquiring a V-phase winding and a W-phase winding by the aid of identical processes; connecting the U-phase winding, the V-phase winding and the W-phase winding with one another to obtain the three-phase symmetric printed winding in star or delta connection. The method has the advantages that the shapes, including the distribution radiuses and the radiuses of matched cylinder permanent magnets of motors, of the conductors are optimally designed by the aid of an optimal design process, and accordingly the torque pulsation generated by counter-electromotive-force harmonic components can be minimized; the three-phase symmetric printed winding manufactured by the aid of the method can be applied to the high-precision servo driving motors with high dynamic performance.

Description

technical field [0001] The invention relates to a three-phase permanent magnet synchronous motor, in particular to a method for manufacturing a three-phase symmetrical printed winding of the three-phase permanent magnet synchronous motor. Background technique [0002] At present, due to congenital defects such as positioning torque and air gap magnetic density distortion of the known three-phase permanent magnet synchronous motor with teeth and slots, the torque of the motor will fluctuate, vibration and noise will occur, and the speed will fluctuate, so that the motor cannot run smoothly and affect motor performance. At the same time, it causes the motor to generate undesired vibration and noise. In variable speed drives, when the torque ripple frequency coincides with the mechanical resonance frequency of the stator or rotor, the vibration and noise generated by the detent torque will be amplified. The existence of detent torque also affects the low-speed performance of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/04H02K3/26
Inventor 黄植功
Owner GUANGXI NORMAL UNIV
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