家电科技Issue(z1)：174-180,7.DOI:10.19784/j.cnki.issn1672-0172.2023.99.039
充磁方式对偏心状态下外转子永磁电机振动噪声影响分析
Influence of magnetization mode on vibration and noise of outer-rotor permanent magnet motor under eccentricity
张婷婷 1孙维国 1葛梦 1钱成1
作者信息
- 1. 广东威灵电机制造有限公司 广东顺德 528333
- 折叠
摘要
Abstract
Due to the asymmetric structure of air gap of the single-phase permanent magnet brushless DC motor,coupled with the inevitable deviation of the concentricity processing between the rotor and shaft,it will bring rich harmonic content to the air gap magnetic density and radial electromagnetic force.Aiming at the problem of 11～20-fold frequency noise in the single-phase external rotor refrigerator fan,first derives the radial electromagnetic force of the permanent magnet motor in the uneccentric and eccentric state,and points out the radial electromagnetic force order and frequency under eccentric state.Secondly,it analyzes the influence of gradual air gap on the air gap flux density of the motor,and the influence of different surface magnetic curves on the air gap flux density and back EMF harmonic content,and the influence of different surface magnetization schemes on the radial electromagnetic force under the moving eccentric state is analyzed.The simulation results show that reasonable adjustment of the magnetization method and weakening the peak magnetic peak can effectively reduce the amplitude of the radial electromagnetic force.Finally,it is verified through experiments that the flat-top wavetable magnetic scheme can significantly improve the noise problem.The research results provide a reference for the design of the outer-rotor permanent magnet motor.关键词
单相永磁无刷直流电机/转子偏心/振动噪声/充磁方式/外转子电机Key words
Single-phase permanent magnet brushless DC motor/Rotor eccentricity/Vibration and noise/Magnetizing method/Outer-rotor motor分类
信息技术与安全科学引用本文复制引用
张婷婷,孙维国,葛梦,钱成..充磁方式对偏心状态下外转子永磁电机振动噪声影响分析[J].家电科技,2023,(z1):174-180,7.
