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Precise calculation method for winding stator mode of AC (alternating current) motor

A technology of AC motors and calculation methods, applied in calculation, electrical digital data processing, design optimization/simulation, etc., to achieve the effects of high calculation accuracy, improved accuracy, and accurate axial modal calculation

Inactive Publication Date: 2016-05-25
SHANGHAI ELECTRICAL APP RES INST +1
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Compared with the conventional modal calculation method, the method provided by the present invention has the advantages of structural equivalence, reasonable material properties, and high accuracy of calculation results, thereby solving the difficulty of accurate calculation of the modal parameters of the complex structure of the motor winding stator and the composite material model

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  • Precise calculation method for winding stator mode of AC (alternating current) motor
  • Precise calculation method for winding stator mode of AC (alternating current) motor

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the present invention more understandable, the present invention will be further described in detail in conjunction with specific examples.

[0031] In the present invention, in order to test and analyze the modal parameters of the winding stator, the winding stator of the motor is selected, and the modal test is carried out in the following manner;

[0032] 1) Select the actual product of the stator with windings. The product includes a stator core composed of silicon steel sheets, a coil wound by copper wires, slot insulation, winding insulation and insulating varnish;

[0033] 2) Carry out modal test on the selected winding stator. Such as figure 1 As shown, the modal test will have a winding stator using springs and nylon ropes to suspend the stator in the air. Divide the outer surface of the stator into 8 equal parts along the circumferential direction, and each equal part distributes 3 measurin...

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Abstract

The present invention discloses a precise calculation method for a winding stator mode of an AC motor. Targeted as the case where winding stators of middle and small AC motors have multiple types of materials and are complex in structure and the like, the present invention provides a method for accurately calculating a winding stator mode by combining actual stator mode parameter testing and finite element emulation calculation and considering influences of an equivalent insulation layer of a stator iron-core lamination structure, and quality and stiffness of an in-slot winding and an end winding on a mode. The method solves the difficulty in accurately calculating and analyzing an actual model mode in the case that a winding stator has multiple types of materials and is complex in structure.

Description

technical field [0001] The invention relates to a method for calculating the modality of a winding stator of an AC motor, which belongs to the technical field of motors. Background technique [0002] The motor stator mode has an important influence on the vibration and noise of the motor. When the vibration frequency of the motor stator resonates with the electromagnetic force frequency, a large vibration acceleration will be generated; in order to avoid resonance and reduce vibration noise, it is necessary to analyze and calculate the stator modal parameters. [0003] For the analysis method of modal parameters, there are two methods: modal test method and calculation method. The modal test method only tests and analyzes the existing products, and cannot evaluate the product design stage; while the calculation analysis method can evaluate the product structure in advance, so as to optimize the product structure and make it meet the design requirements. [0004] There are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 额尔和木巴亚尔李敏杨青张伟韩素芳吕顺
Owner SHANGHAI ELECTRICAL APP RES INST
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