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Parameterization calculation method for GVPI stator iron core mode

A technology of stator core and calculation method, applied in design optimization/simulation, geometric CAD, etc., can solve the problems such as the influence of increasing the stiffness of the core and the contribution of the stiffness of the teeth of the core cannot be considered, so as to shorten the calculation time and avoid human errors. , the effect of improving efficiency

Active Publication Date: 2020-02-25
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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AI Technical Summary

Problems solved by technology

This method has the following disadvantages: 1) It cannot consider the influence of the increase in core stiffness brought about by the GVPI process; 2) The contribution of the stiffness of the core teeth is omitted
Therefore, the results obtained by the previous core modal calculation method are lower than the actual value

Method used

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  • Parameterization calculation method for GVPI stator iron core mode
  • Parameterization calculation method for GVPI stator iron core mode
  • Parameterization calculation method for GVPI stator iron core mode

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Embodiment Construction

[0030] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0031] The present invention provides a kind of parameterized calculation method for GVPI stator core mode, comprising the following steps:

[0032] Step 1. Establish a simplified geometric model of the stator core

[0033] According to the design size of the generator stator, a simplified two-dimensional model of the stator core is established. The simplified model includes three parts: the core yoke, the core teeth and the s...

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Abstract

The invention discloses a parameterization calculation method for a GVPI stator iron core mode. A stator iron core is formed by stacking silicon steel sheets. When the stator iron core modal adoptingthe GVPI technology is calculated, the stator winding with actual mass and low elasticity modulus is established to simulate the improvement of the stator winding on the overall rigidity of the iron core after GVPI, so that the accuracy of the stator iron core modal calculation adopting the GVPI technology is improved. The method has the advantages that through secondary development, calculation of various GVPI iron core modes can be achieved, operation is easy, standardization of the calculation method and process is achieved, human factor errors caused by different analysts are avoided, thecalculation time is remarkably shortened, and the efficiency is improved.

Description

technical field [0001] The invention relates to a parameterized calculation method for a GVPI stator core mode, which is suitable for a two-pole or four-pole generator adopting the GVPI technology, and belongs to the technical field of motors. Background technique [0002] When the generator rotor is connected to the excitation current, the rotor becomes an electromagnet, and most of the rotating magnetic field generated by it forms a closed loop through the rotor, air gap and stator core. The stator core will be subjected to a certain frequency of electromagnetic excitation force. If the natural frequency of the iron core is close to the electromagnetic excitation frequency, it will cause destructive resonance. Therefore, it must be avoided in the structural design. [0003] During the global vacuum pressure impregnation (GVPI) process of the stator core and windings, the two will be impregnated with resin and cross-linked into a whole under vacuum and pressure. The overall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/17
CPCY02T90/00
Inventor 贺阿亚达张燕张健吴新亚杨昔科
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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