表贴式永磁同步电机多步预测控制简化算法  

Simplified multi-step predictive control for surface permanent magnet synchronous motor

作　　者：李耀华[1] 苏锦仕 秦辉 赵承辉 秦玉贵 周逸凡[1] LI Yao-hua;SU Jin-shi;QIN Hui;ZHAO Cheng-hui;QIN Yu-gui;ZHOU Yi-fan(School of Automotive,Chang’an University,Xi’an 710064,China)

机构地区：[1]长安大学汽车学院,陕西西安710064

出　　处：《电机与控制学报》2022年第11期122-131,共10页Electric Machines and Control

基　　金：陕西省自然科学基金(2021JM-163);西安市碑林区科技计划项目(GX2252)。

摘　　要：针对表贴式永磁同步电机多步模型预测转矩控制优化过程运算量大的问题,提出一种多步预测控制新型简化算法。首先,建立了多步模型预测转矩控制模型,分析未简化算法(T-MPTC)的实施过程和运算量;其次,在“精简电压矢量集合”法(S-MPTC)基础上,提出了“电压矢量保持”算法(P-MPTC),一定条件下避免遍历备选电压矢量集中的所有电压矢量以简化运算;最后,定义运算量的评价指标,将所提出的P-MPTC算法与T-MPTC、S-MPTC算法进行仿真对比,分析3种算法的控制性能和运算量的变化情况,并在STM32H743单片机平台上实际对比了3种算法的执行时间,验证了所提出算法的简化效果。结果表明,相比于其他两种算法,提出的简化算法在保证电机控制性能基本不变的同时,能大幅度减少多步模型预测的运算量。以六步预测为例,P-MPTC算法运算量仅为T-MPTC算法运算量的0.02%,极大减少了多步预测的计算量。Aiming at reducing computational burden in multi-step model predictive torque control(MPTC)of surface-mounted permanent magnet synchronous motors(SPMSM),a novel simplified multistep MPTC algorithm named P-MPTC,was proposed.First,a multi-step MPTC model was established,and the computational burden of the traditional MPTC(T-MPTC)were discussed.Secondly,based on the“Simplified Voltage Vector Set”method(S-MPTC),the“Voltage-Preserving”algorithm of MPTC(P-MPTC)was proposed,which avoided enumerating all the voltage vectors in the candidate set to simplify the computation.Finally,the evaluation metrics of the computational burden was defined.Through simulation,the proposed MPTC algorithm was compared with T-MPTC and S-MPTC,to analyze the change of control performance and computational burden.The execution time of the three algorithms was actually compared on the STM32H743 microcontroller platform to verify the simplification effect of the proposed algorithm.The result shows that,compared with the other two algorithms,the proposed simplified algorithm can greatly reduce the computational burden of multi-step MPTC while the motor control performance almost not change.For example,in the six-step MPTC,the computational burden in the proposed simplified algorithm is only 0.02% of that in T-MPTC,which decreases computational burden dramatically.

关 键 词：电机控制技术 永磁同步电机 有限控制集 模型预测控制 多步预测控制 简化算法 

分 类 号：TM351[电气工程—电机]