摘要
从工业场合下多电机系统高速运行的实际需求出发,分析了传统多电机控制系统和传统弱磁控制系统的优缺点,针对多电机高速运行时的弱磁特性进行了研究。模型预测控制(MPC)是一种基于被控对象模型的新型控制算法,具有较强的鲁棒性和较好的控制性能。交叉耦合控制是一种在并行控制基础上对每个电机进行相应补偿的控制系统。将MPC应用到多电机控制系统中并对其进行改进使其具有弱磁控制能力;对传统的交叉耦合控制策略进行改进。将二者结合提出了一种基于模型预测的多电机弱磁同步控制策略,并以双电机系统为例。最后,进行了仿真验证,仿真试验结果表明,基于模型预测的多电机弱磁同步控制策略,可获得比传统双电机系统更好的跟随性能和同步性能。
Based on the actual demand for high-speed operation of multi-motor system in industrial occasions,the advantages and disadvantages of traditional multi-motor control system and traditional flux weakening control system were analyzed.The flux weakening characteristics of multi-motor system under the high-speed operation were discussed.Model predictive control(MPC)was a new control algorithm based on the controlled object model,which had strong robustness and better control performance.Cross-coupling control was a control system which compensated each motor on the basis of parallel control.MPC was applied to multi-motor control system and the ability of flux weakening control was improved.The traditional cross-coupling control strategy was also improved.A model prediction synchronous control strategy for multi-motor flux weakening control was proposed based on the combination of the two strategies.Taking the simulation of dual-motor system as an example,the simulation results show that the multi-motor flux weakening synchronous control strategy based on model prediction has better tracking performance and synchronous performance than the traditional control system.
作者
李东亮
缪仲翠
王志浩
张靓
LI Dongliang;MIAO Zhongcui;WANG Zhihao;ZHANG Jing(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《电机与控制应用》
2019年第11期7-12,共6页
Electric machines & control application
基金
国家自然科学基金项目(61663022)
长江学者和创新团队发展计划项目(IRT_16R36)
关键词
多电机转速同步
交叉耦合控制
模型预测控制
弱磁控制
multi-motor speed synchronization
cross-coupling control
model predictive control
flux weakening control
