项目名称： PWM供电下横向磁通永磁电机电磁噪声的分析及抑制研究

项目编号： No.61503042

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 自动化技术、计算机技术

项目作者： 王巍

作者单位： 渤海大学

项目金额： 21万元

中文摘要： “噪声”是电动机主要技术指标之一，更是电动机品质指标和优等价格的重要依据。电动机的噪声涉及电动机、声学、结构动力学、信号分析等专业学科，造成噪声问题的复杂性和高难度。在电动机电磁设计阶段即控制电磁噪声是从根本上实现噪声控制的方法。横向磁通永磁电机同时具有高转矩密度及高效率的特点，已经引起电机研究者与商家关注，对该类电机噪声控制研究也显得尤为重要。本项目针对横向磁通永磁电机，采取电机本体优化设计和控制相结合的方法分析和抑制电磁噪声。首先经过仿真及理论分析设计低噪声横向磁通永磁电机；其次将小波理论引入噪声源识别技术，对频率范围在所需范围重构信号进行2次频谱分析，清晰得出信号特征，并结合特定谐波消除PWM对电磁噪声进行控制；最后针对基于Markov链的双随机PWM方法进一步研究该类电机电磁噪声抑制问题。该项研究对促进科技、社会的发展，及推进该类电机在相关领域的应用均具有重要意义。

中文关键词： 横向磁通永磁电机；电磁噪声抑制；小波分析；随机PWM

英文摘要： Electromagnetic noise is an important technical index for electric motor and the noise level of electric motor has become an essential factor in market competition. Electromagnetic noise of motor involves multidisciplinary knowledge, such as electric machinery, acoustics, structural dynamics and signal analysis, which led to the complexity and difficulty of noise problem. To solve the problem fundamentally, we should take steps to suppression noise in design stage. Transverse flux permanent magnet motor has high torque density and efficiency, which attracts more and more researchers and businesses. So, study on electromagnetic noise is particularly important for it. The project takes the method of combination of optimize design theory and control to analyze and control electromagnetic noise for transverse flux motor. First, design motor with low electromagnetic noise by the simulation and theoretical analysis. In addition, introduce wavelet theory to noise source identification technology. To get clear signal characteristics, the further frequency spectrum of reconstructive signals would be analyzed. Then suppress electromagnetic noise in accordance with specific harmonic waves. In the final step, the suppression of electromagnetic noise would be studied by using dual randomized PWM based on Markov chains. This project has important implications for the development of economy, science and technology, and application of this type of motor in the correlative field.

英文关键词： Transverse Flux Permanent Magnet Motor;Electromagnetic Noise Suppression;Wavelet Analysis;Random PWM