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Permanent magnet synchronous linear motor modeling and characteristic analyzing method based on equivalent magnetic circuit method

A permanent magnet synchronous straight line, equivalent magnetic circuit technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of no motor end modeling, etc., to achieve a simple and easy model, and ensure accuracy Effect

Inactive Publication Date: 2016-07-20
TIANJIN UNIV
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Problems solved by technology

Calculation and analysis of permanent magnet synchronous linear motor based on equivalent magnetic circuit method without detailed modeling of motor end

Method used

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  • Permanent magnet synchronous linear motor modeling and characteristic analyzing method based on equivalent magnetic circuit method
  • Permanent magnet synchronous linear motor modeling and characteristic analyzing method based on equivalent magnetic circuit method
  • Permanent magnet synchronous linear motor modeling and characteristic analyzing method based on equivalent magnetic circuit method

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Embodiment Construction

[0022] The invention first establishes a finite element method simulation model of a permanent magnet synchronous linear motor with computer software, and solves the magnetic field flux density distribution, flux linkage, armature back electromotive force and magnetic resistance of the motor. Then use MATLAB to program the proposed equivalent magnetic circuit method analysis model of permanent magnet synchronous motor and its characteristic analysis method, and solve the model to get the results. Comparing the results obtained by MATLAB with the results obtained by the finite element method, the correctness of the proposed model and its characteristic analysis method is verified. The specific implementation steps are as follows:

[0023] 1. Use computer software to establish a finite element model of permanent magnet synchronous linear motor, and determine the basic structural parameters of the motor as shown in Table 1.

[0024] Table 1 Basic parameters of PMSM finite elemen...

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Abstract

The invention relates to a permanent magnet synchronous linear motor modeling and characteristic analyzing method based on an equivalent magnetic circuit method. The method comprises following steps of dividing a permanent magnet synchronous linear motor equivalent magnetic circuit method analyzing model into two parts, wherein a linear motor primary forms a first part, and an air gap and a motor secondary form a second part; ignoring the saturation of an iron core, solving the permeance of the first part and magnetomotive force parameters generated by an armature winding; equally dividing the magnetic circuit in each space width entering into each primary tooth into four branches except the end part of the motor; obtaining the distribution of the air gap flux density of the motor at any moment; and solving the magnetic linkage of the motor, the counter electromotive force of an armature and the magnetic resistance of the motor. According to the method, under the premise of ensuring the model precision, the model is simple and practicable.

Description

technical field [0001] The invention belongs to the field of electric machine magnetic field calculation characteristic analysis, and in particular relates to a permanent magnet synchronous linear electric machine modeling method based on an equivalent magnetic circuit method, and a method for electric machine characteristic analysis. Background technique [0002] Permanent magnet synchronous linear motors are widely used in the industrial field due to their unique linear motion, high efficiency and high thrust density, and have attracted the attention of researchers at home and abroad. The finite element method and the equivalent magnetic circuit method are commonly used in motor design and characteristic analysis. The results of the finite element method analysis are accurate, but the calculation amount is large and time-consuming, which is not conducive to fast calculation. It is not suitable to use the finite element method in the initial stage of motor design and in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/367
Inventor 李桂丹宋双利李斌
Owner TIANJIN UNIV
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