基于傅里叶变换解耦的容错控制方法
Fault Tolerant Control Method based on Fourier Transform Decoupling
杨毅 1张中哲 1赵辉 1李琪琦 1徐志书1
作者信息
- 1. 北京精密机电控制设备研究所,北京,100076;控制执行机构技术创新中心,北京,100076
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摘要
在多相电机的容错控制中,对于通过多约束求解获得的较为复杂的非正弦型容错电流一般采用滞环控制方法进行容错控制.电压空间矢量控制相对滞环控制具有转矩脉动小、能量消耗小的优势,在多相电机的控制中更为普遍.为解决非正弦型容错电流不能直接解耦变换以适用于电压空间矢量控制的问题,引入傅里叶变换并将非正弦型容错电流分解为基波电流与三次谐波电流,实现非正弦型容错电流的解耦变换,基于此推导解耦变换矩阵,采用仿真分析的方法来验证处理方法的正确性.结果表明这种处理方法可以解决多相永磁同步电机开路容错控制下的非正弦型容错电流无法直接解耦变换导致的无法直接适用于电压空间矢量控制的问题,以实现降低转矩脉动、提高电机电流平稳性的目标.
Abstract
In the fault-tolerant control of polyphase motors,hysteresis control is generally adopted for the more complex non-sinusoidal fault-tolerant current obtained by multi-constraint solving.Compared with hysteresis control,voltage space vector control has the advantages of low torque ripple and low energy consumption,which is more common in the control of polyphase motors.In order to solve the problem that the non-sinusoidal fault-tolerant current cannot be decoupled directly for voltage space vector control,Fourier transform is introduced and the non-sinusoidal fault-tolerant current is decomposed into fundamental current and third harmonic current to realize the decoupling transformation of the non-sinusoidal fault-tolerant current.Based on this,the decoupling transformation matrix is derived and the correctness of the processing method is verified by simulation analysis.The results show that this method can solve the problem that the non-sinusoidal fault-tolerant current under open fault-tolerant control of polyphase permanent magnet synchronous motor cannot be directly applied to voltage space vector control,so as to reduce the torque ripple and improve the motor current stability.
关键词
五相永磁同步电机/容错控制/傅里叶变换/解耦/电压空间矢量控制Key words
five-phase permanent magnet synchronous motor/fault tolerant control/Fourier transform/decoupling/voltage space vector control引用本文复制引用
出版年
2024
NETL
NSTL
万方数据