考虑失磁故障的永磁同步电机辅助抗饱和滑模控制  

Consideration of flux-loss fault in auxiliary anti-windup sliding mode control of PMSM

作　　者：何静[1] 邹奕月 张昌凡[2] 贾林[2] HE Jing;ZOU Yiyue;ZHANG Changfan;JIA Lin(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China;College of Railway Transportation,Hunan University of Technology,Zhuzhou 412007,China)

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412007 [2]湖南工业大学轨道交通学院,湖南株洲412007

出　　处：《包装与食品机械》2024年第6期98-105,共8页Packaging and Food Machinery

基　　金：国家自然科学基金(52172403,62173137);湖南省教育厅科学研究项目(23A0426)。

摘　　要：为解决永磁体失磁及控制器输出饱和等问题对系统可靠性和安全性构成的威胁,提出考虑失磁故障的永磁同步电机(PMSM)辅助抗饱和滑模的控制方法。采用无差拍容错控制以抑制同步电机失磁现象,通过调节d轴电流使有效磁链恒定,从而输出恒定的电磁转矩。建立电流滑模控制器输出q轴电流,设计辅助抗饱和控制算法,以补偿的方式解决滑模输出调节电流过大的问题。仿真结果显示,未采取此控制策略的电机在失磁后,转速从300 N_(r)/s开始线性下降,且i_(q)的初始峰值达到200 A;采用此控制策略的PMSM能够保持转速稳定在设定的300 N_(r)/s,且q轴控制电流的峰值饱和值被限制在30 A以内,较未采取此控制策略的i_(q)值减小85%,实现电机转速的稳定跟踪。研究为PMSM在包装与食品行业的可靠应用提供技术支持。To address the threats posed by issues such as permanent magnet demagnetization and controller output saturation to system reliability and safety,a control method is proposed for permanent magnet synchronous motors(PMSM) that incorporates auxiliary anti-saturation sliding mode control while considering demagnetization faults.Deadbeat fault-tolerant control is employed to mitigate demagnetization in synchronous motors,maintaining a constant effective flux linkage by adjusting the d-axis current,thereby ensuring a stable electromagnetic torque output.A current sliding mode controller is established to output the q-axis current,and an auxiliary anti-saturation control algorithm is designed to compensate for excessive adjustment currents from the sliding mode output.Simulation results demonstrate that without this control strategy,the motor's speed begins to linearly decrease from 300 N_(r)/s after demagnetization,with an initial peak i_(q) reaching 200 A.In contrast,with this control strategy,the PMSM can maintain a stable speed of 300 N_r/s,and the peak saturation value of the q-axis control current is limited to within30 A,representing an 85% reduction in i_(q) compared to the uncontrolled scenario,thus achieving stable tracking of motor speed.This research provides technical support for the reliable application of PMSMs in the packaging and food industries.

关 键 词：永磁同步电机 包装与食品行业 失磁故障 辅助抗饱和控制 滑模控制器 

分 类 号：TB486.3[一般工业技术—包装工程] TP273[自动化与计算机技术—检测技术与自动化装置]