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Motor electromagnetic design method based on probability analysis

A technology of electromagnetic design and probabilistic analysis, applied in computer-aided design, calculation, electrical and digital data processing, etc., can solve the problem of increasing the probability of design failure, and achieve the effect of reducing the design failure rate

Active Publication Date: 2019-09-06
SHANGHAI MOTOR SYST ENERGY SAVING ENG TECH RES CENT +1
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Problems solved by technology

Therefore, when the motor material performance, processing technology, and external load fluctuate, the probability of design failure of the qualified scheme calculated based on the average value of the input variable will increase.

Method used

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  • Motor electromagnetic design method based on probability analysis
  • Motor electromagnetic design method based on probability analysis
  • Motor electromagnetic design method based on probability analysis

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Embodiment 1

[0106] To facilitate those skilled in the art to quickly understand the above electromagnetic design calculation method, an example is introduced below to illustrate the calculation process of the method. This method is applied to the design process of a non-standard high-efficiency three-phase asynchronous motor. Considering the mass production cost, the punching material is 50W470.

[0107] Motor power: 4kW, number of poles: 4.

[0108] 1) Calculate the deterministic scheme with the electromagnetic design computer program written, and calculate the calculated value of the performance parameters of the scheme: efficiency η = 91.81%; power factor The technical agreement requires that the efficiency guarantee value is 91.5%; the power factor guarantee value is The minimum power factor and efficiency product recommended by the user agreement: 0.726.

[0109] 2) Determine random variable vector X=[K Fe , Di1, D2, Ps, P 2 ] T

[0110] 3) Random vector X=[K Fe , Di1, D2, P...

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Abstract

The invention provides a motor electromagnetic design method based on probability analysis. The invention provides a motor electromagnetic design calculation method considering random variable fluctuation such as material performance, processing technology and external load during motor electromagnetic design calculation. The motor electromagnetic design calculation method based on probability analysis can correctly, scientifically and objectively design the electromagnetic scheme meeting the technical conditions and probability requirements, the standard deviation requirement corresponding tothe electromagnetic scheme can provide a basis for the process design, guidance suggestions are provided for the production process, and the potential design failure rate is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to an electromagnetic design method of a high-efficiency three-phase asynchronous motor. Background technique [0002] Electromagnetic design of three-phase asynchronous motor is the first and most critical step in motor manufacturing, which is related to whether the motor's operating performance indicators are qualified. The electromagnetic design calculation of the three-phase asynchronous motor has experienced manual electromagnetic calculation (adjusting the design scheme according to the designer's experience), to writing computer programs and using various methods to realize automatic calculation and scheme optimization for the electromagnetic design process. [0003] The computer program is mainly based on the "Electromagnetic Calculation Program for Small and Medium-sized Three-phase Asynchronous Motors" published by the Shanghai Electric Appliance Research Institute in 1971,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 向懿黄坚李光耀姚丙雷韦福东王建辉
Owner SHANGHAI MOTOR SYST ENERGY SAVING ENG TECH RES CENT
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