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Motor electromagnetic force and electromagnetic vibration noise analysis method and system

A noise analysis and electromagnetic vibration technology, applied in electrical digital data processing, instruments, geometric CAD, etc., can solve problems such as complex vibration calculation, and achieve the effect of shortening calculation time, solving complex calculation, and improving accuracy

Pending Publication Date: 2021-06-04
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

However, in the existing vibration semi-analytical calculation method, only the vibration response calculation part is replaced by the mode superposition method, and the most time-consuming electromagnetic force calculation and transfer function calculation still rely on finite element calculation data, which does not fundamentally solve the problem of vibration calculation. complicated question

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  • Motor electromagnetic force and electromagnetic vibration noise analysis method and system
  • Motor electromagnetic force and electromagnetic vibration noise analysis method and system
  • Motor electromagnetic force and electromagnetic vibration noise analysis method and system

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Embodiment Construction

[0061] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0062] Such as figure 1 As shown, the embodiment of the present invention provides a method for calculating the electromagnetic force and electromagnetic vibration noise of a motor, which includes the following steps:

[0063] (1) The calculation platform needs to be initialized before the whole calculation process starts, including setting the speed, torque, power, etc. of the motor to determi...

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Abstract

The invention discloses a motor electromagnetic force and electromagnetic vibration noise analysis method and system, and the method comprises the following steps: S100: determining the operation condition of a motor, obtaining the phase current of the motor at any moment, and determining a slot magnetomotive force function and a slot matrix of the motor, and the armature magnetomotive force of the motor at any moment; s200, establishing a static finite element model of the motor, and analyzing the magnetomotive force of a permanent magnet of the motor and the complex air gap permeability functions of a stator and a rotor of the motor; s300, obtaining the air gap flux density of the motor, and obtaining the electromagnetic force borne by each stator tooth of the motor; s400, establishing a three-dimensional structure finite element model of the motor, and analyzing a vibration transfer function of the motor; and S500, calculating the vibration speed and the vibration acceleration of the motor under the excitation of any electromagnetic force, and obtaining the sound pressure level and the sound power radiated by the motor based on the vibration speed and the vibration acceleration. According to the invention, the electromagnetic force and the electromagnetic vibration noise of the motor under various working conditions can be quickly evaluated and analyzed, and the calculation and optimization efficiency of the vibration noise of the motor is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of motor vibration and noise, and more specifically relates to a method and system for analyzing the electromagnetic force and electromagnetic vibration noise of a motor. Background technique [0002] Motors have been widely used in various fields of social production and life. In recent years, the vibration and noise of the motor has gradually become an important indicator to measure the performance of the motor. The field of transportation equipment represented by new energy vehicles and the field of national defense represented by all-electric ships and underwater vehicles have put forward extremely high requirements on the vibration and noise of motors. For new energy vehicles, the vibration and noise of the drive motor not only reduces the ride comfort of the vehicle, but also affects the user's recognition of the brand and market competitiveness. In the fields of all-electric ships and underwater veh...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F30/23G06T17/20G06F119/14
CPCG06F30/17G06F30/23G06T17/20G06F2119/14
Inventor 卢阳李健徐宏伟
Owner HUAZHONG UNIV OF SCI & TECH
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