Magnetic circuit method and finite element method-based motor noise optimization method and apparatus

Abstract

Embodiments of the invention disclose a magnetic circuit method and finite element method-based motor noise optimization method and apparatus, which is used for solving the technical problems of relatively high noise measurement precision and cost of a permanent magnet synchronous motor and difficulty in adjusting parameters of the permanent magnet synchronous motor in a measurement process to achieve the purpose of optimizing motor noises in the prior art. The method comprises the steps of simplifying a magnetic field of the motor to a magnetic circuit through magnetic circuit method design, and generating a preliminary design model of the motor; analyzing parameters influencing cogging torque of the motor in the preliminary design model of the motor according to a finite element method, and selecting numerical values of parameters capable of reducing the cogging torque of the motor; performing radial electromagnetic force wave solving on the motor, working out radial force waves on stator teeth of the motor, and performing harmonic response analysis on an obtained solving result; and outputting vibration acceleration obtained by the harmonic response analysis to a stator shell of the motor, and performing sound field analysis to obtain a noise distribution condition around the motor.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motors, in particular to a motor noise optimization method and device based on a magnetic circuit method and a finite element method. Background technique [0002] Energy saving and emission reduction is a global development trend, and the cotton spinning industry is a large energy consumer. Its running time is 24 hours, and the electricity cost of the working motor accounts for the second largest expenditure cost in the cotton spinning industry. Core) belongs to one means, but it has the problem of cogging torque. Moreover, the noise produced by the motor used in textiles is also a problem that cannot be ignored. When the noise of the motor is too large, it will not only affect its normal operation, but even the sweeping of the motor will occur, and it will also affect the work of the staff. The noise of the motor mainly comes from electromagnetic noise. Since the magnetic field in th...

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Problems solved by technology

[0009] The embodiment of the present invention provides a motor noise optimization method and device based on the magnetic circuit method and the finite element method, which solves the problem of high measurement accuracy and measurement cost o

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