摘要
由于永磁同步电动机无差拍电流预测控制中参数扰动或模型失配会出现电流静差和振荡问题,因此提出基于离散扩张状态观测器的鲁棒电流预测控制方法。但是系统仍然有着启动超调、动态响应时间过长等不足,为了提升系统的动静态性能,因此在无差拍电流预测控制算法的基础上,设计出离散扩张状态观测器来估计系统扰动,修正后补偿给电机的参考电压,通过极点配置分析系统稳定性,再将模型预测控制应用到转速环,从而形成基于扰动观测的永磁同步电动机双预测控制。仿真结果表明,所提方法具有动态响应快、静态误差小、受负载扰动影响小的特点,对参数扰动具有较强的鲁棒性。
Due to the parameter disturbance or model mismatch will cause current static difference and oscillation problems in the deadbeat current predictive control of permanent magnet synchronous motor,a robust current predictive control method based on discrete extended state observer is proposed.However,the system still has shortcomings such as overshooting and too long dynamic response time.In order to improve the dynamic and static performance of the system,therefore on the basis of the deadbeat current predictive control algorithm,a discrete extended state observer is designed to estimate the system disturbance and after it is corrected the reference voltage of the motor is compensated,and the stability of the system is analyzed by the pole arrangement.Then the model predictive control is applied to the speed loop to form a dual predictive control of the permanent magnet synchronous motor based on disturbance observation.The simulation results show that the proposed method has the characteristics of fast dynamic response,small static error and little influence by load disturbance,and strong robustness to parameter disturbance.
作者
齐歌
李敬业
QI Ge;LI Jing-ye(School of Electrical Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《组合机床与自动化加工技术》
北大核心
2020年第12期85-89,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
河南自然科学基金(182300410182)。
关键词
永磁同步电动机
扩张观测器
无差拍
模型预测
permanent magnet synchronous motor
expansion observer
deadbeat
model predictive
