基于双MPC与变斜率I/f的SPMSM快速启动控制策略研究  

SPMSM fast start control strategy based on dual MPC and dynamic slope I/f

作　　者：刘普 崔艺博 王聪 韩坤 常忠廷 LIU Pu;CUI Yibo;WANG Cong;HAN Kun;CHANG Zhongting(School of Electrical and Information Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;XJ Electric Co.,Ltd.,Xuchang 461000,China)

机构地区：[1]郑州轻工业大学电气信息工程学院,河南郑州450002 [2]许继电气股份有限公司,河南许昌461000

出　　处：《电机与控制学报》2024年第9期151-161,共11页Electric Machines and Control

基　　金：河南省重大科技专项(221100240500);河南省科技攻关项目(222102220089)。

摘　　要：为了表贴式永磁同步电机(SPMSM)快速启动应用,针对现有恒流频比控制(I/f)启动采用固定参考斜率导致启动慢以及后续投切为双PI闭环磁场定向控制(FOC)策略动态响应能力不足的问题,提出一种内、外环均采用模型预测控制(MPC)策略的SPMSM变斜率I/f(DI/f)启动控制策略。首先通过模型预测推算出下一时刻的转子位置、转速。其中转速用于估算负载转矩,转子位置等效为变斜率I/f启动中的动态参考频率,构成变DI/f启动。当电机转速达到设定转速后,系统自动投切为双闭环MPC控制。模型预测转速外环通过当前转速与估算负载计算下一时刻q轴电流的额定值,实现启动到稳态的平稳快速切换。仿真与实验结果验证该算法的可行性与有效性,并使永磁同步电机的启动上升时间缩短了41.9%,调节时间缩短了41.1%。In order to realize the fast start-up of surface permanent magnet synchronous motor(SPMSM),a dynamic slope I/f(DI/f)start-up control strategy for SPMSM was proposed,in which both the inner and outer loops adopt the model predictive control(MPC)strategy,in order to solve the problems of slow start-up caused by the fixed reference slope of the existing I/f start-up and insufficient dynamic response capability of the subsequent switching to the double PI closed-loop field oriented control(FOC)strategy.First,the rotor position and speed at the next moment were calculated by model prediction.The speed was used to estimate the load torque,and the rotor position is equivalent to the dynamic reference fre-quency in the variable slope I/f start-up,which constitutes the variable DI/f start-up.When the motor speed reaches the set speed,the system automatically switches to the double closed-loop MPC control.The model predictive speed outer loop calculates the rated value of the q-axis current at the next moment through the current speed and the estimated load,so as to achieve a smooth and fast switch from start-up to steady state.The simulation and experimental results verify feasibility and effectiveness of the algo-rithm,and shorten the starting rise time of the permanent magnet synchronous motor by 41.9%and the setting time by 41.1%.

关 键 词：永磁同步电机 I/f控制 磁场定向控制 模型预测控制 复合控制 动态响应 

分 类 号：TM351[电气工程—电机] TM341