PMSM模型预测直接转矩改进控制策略研究  

Research on the Strategy of Permanent Magnet Synchronous Motor Model Predictive Direct Torque Control Improvement

作　　者：孙旭霞[1,2] 樊昱琨 李生民 刘一栋[1,2] SUN Xuxia;FAN Yukun;LI Shengmin;LIU Yidong(School of Automation & Information Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China;Key Laboratory of Shaanxi Province forComplex System Control and Intelligent Information Processing,Xi’an 710048,Shaanxi,China)

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048 [2]陕西省复杂系统控制与智能信息处理重点实验室,陕西西安710048

出　　处：《电气传动》2019年第8期26-31,共6页Electric Drive

基　　金：国家自然基金项目(51607142);陕西省重点产业创新链—工业领域项目(2017ZDCXL-GY-01-01);陕西省自然科学研究项目(2016JM5061)

摘　　要：永磁同步电机直接转矩控制,其转矩与磁链脉动问题较为突出。在永磁同步电机直接转矩控制中运用模型预测控制算法,以算法滚动优化与反馈校正的特点对转矩、磁链脉动进行抑制;在模型预测直接转矩控制的基础上运用空间电压矢量细分,增加可预测电压矢量的个数,以提升预测精度;同时,对预测运算进行简化处理,增进算法适用性。仿真验证了该算法的可行性和有效性,并通过实验平台进行试验测试。结果表明,该控制系统相电流波形正弦度高、高次谐波得到抑制,而且简化后的算法使得系统运行时间减少了39.7%。The direct torque contro(l DTC)of permanent magnet synchronous moto(r PMSM)has the problems of prominent torque and flux ripple. Model predictive control algorithm was utlized in PMSM-DTC,the characteristic of algorithm that are the rolling characteristics optimization and feedback correction was utlized to suppress the ripple of torque and flux. On the basis of model predictive direct torque contro(l MPDTC),subdividing voltage space vector was used and the number of pre measured voltage vector was increased to improve the prediction accuracy. At the same time,the prediction operation was simplified to enhance applicability of algorithm. The simulation verifies the feasibility and effectiveness of the algorithm,and it is tested through the experimental platform. The results show that the phase current waveform of the control system is more similiar as sine wave,and the high order harmonics are suppressed. Moreover,the simplified algorithm reduces the running time of the system by 39.7%.

关 键 词：永磁同步电机 直接转矩控制 模型预测 脉动 

分 类 号：TM341[电气工程—电机]