永磁同步电机三矢量优化预测磁链控制  

Three vectors model predictive flux-linkage control of permanent magnet synchronous motor

作　　者：葛兴来[1] 胡晓[1] 孙伟鑫 李松涛[1] GE Xing-lai;HU Xiao;SUN Wei-xin;LI Song-tao(Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle,Ministry of Education,Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]西南交通大学磁浮技术与磁浮列车教育部重点实验室,成都611756

出　　处：《电机与控制学报》2021年第8期9-17,共9页Electric Machines and Control

摘　　要：永磁同步电机的传统模型预测控制由于备选电压矢量覆盖范围有限,因此存在单个控制周期内计算复杂、电流脉动大等缺陷,在实际工况中难以实现良好的控制性能。针对这一问题,以磁链为控制变量提出一种优化三矢量模型预测磁链控制策略,利用磁链无差拍原理计算下一周期的第一最优电压矢量,相比传统方法可减少单个控制周期内的预测次数;再遍历第一最优电压矢量与剩下有效电压矢量的所有组合选择第二最优矢量,达到备选电压矢量覆盖范围最大化;最后引入零矢量调节合成电压矢量幅值。仿真和实验验证结果表明,与单一矢量预测磁链控制相比,三矢量MPFC在保证动静态性能的同时,能够明显减小电流谐波和转矩脉动,降低计算复杂度,提高在实际系统中的控制性能。Due to the limited voltage vectors,the conventional model predictive control(MPC)of permanent magnet synchronous motor(PMSM)may suffer from the heavy computational burden and large current ripples,which is undesirable in practice.An improved three vectors model predictive control based on the flux-linkage prediction is proposed in this paper to address these issues.The first optimal voltage vector pre-applied in the next period was calculated using the principle of deadbeat flux-linkage to reduce the number of forecasts in a single control period.Furthermore,all the combinations of the first optimal voltage vector and the remaining effective voltage vectors were traversed to select the second optimal vector,maximizing the candidate voltage vector’s coverage.Afterward,a zero vector was introduced to adjust the composite voltage vector amplitude.Simulations and experimental results show that,compared with the single vector predictive flux linkage(MPFC)control,the three-vector MPFC can effectively mitigate current harmonics and torque ripples with preserving satisfaction,reduce computational complexity,and improve control performance.

关 键 词：永磁同步电机 模型预测控制 多矢量预测 磁链控制 三矢量预测磁链控制 

分 类 号：TM351[电气工程—电机]