摘要
为抑制永磁同步电机的电流谐波,提出一种新型电流谐波抑制方法,在永磁同步电机数学模型的基础上,分析了产生谐波的原因及不良影响。通过低通滤波器与坐标变换的方法检测了5次与7次谐波,采用一种前馈控制方法将电流谐波分量提取出来并进行了相应的补偿,抑制了电流谐波,并提高电流的动态响应速度。为验证提出的方法,进行仿真分析和实验。结果表明,该方法对抑制电流谐波的效果显著,而可以提升动态响应性能。
In order to suppress current harmonic of permanent magnet synchronous motors （PMSM）, an advanced current harmonic suppression method is developed in this paper. On the basis of PMSM mathematical model, the reasons and the adverse impact are explicated. The 5 and 7 harmonics are checked through the low-pass filter and the method of coordinate transformation, and the current harmonic component has been extracted by the feedforward control method and the corresponding compensation is made, which suppresses current harmonics and improves the current dynamic response performance. The effectiveness of the proposed algorithm has been verified by simulation and experimental results.
出处
《控制工程》
CSCD
北大核心
2016年第2期284-288,共5页
Control Engineering of China
基金
湖南省教育厅科学研究项目(14C0272)
湖南省自然科学基金(2015JJ2014)
关键词
永磁同步电机
电流谐波抑制
前馈补偿
坐标变换
Permanent magnet synchronous motor
current harmonic suppression
feedforward compensation
coordinate transformation
