摘要
针对传统永磁同步电机模型预测电流控制在1个控制周期内通过遍历寻优的方式确定1个最优电压矢量作用,使得d、q轴电流波动大及相电流畸变严重的问题,提出一种简化计算的改进模型预测电流控制算法。该算法将电压矢量平面划分为12个扇区,通过无差拍原理确定参考电压矢量位置角,得到2个备选电压矢量组合,通过一种基于价值函数最小化分析得到的简化方法求取矢量最优作用时间,利用改进方式对2个电压矢量组合进行快速择优并作用于电机。该算法在减少计算量的同时,保持了良好的控制性能,通过搭建仿真实验验证,有效减小了电流波动和相电流畸变。
To solve the problem that the traditional permanent magnet synchronous motor(PMSM) model predictive current control(MPCC) algorithm determines an optimal voltage vector action by traversal optimization in one control cycle,which made the d-axis and q-axis current fluctuate greatly and the phase current distortion was serious,an improved model predictive current control algorithm with simplified calculation was proposed.The voltage vector plane was divided into 12 sectors,and the position angle of the reference voltage vector was determined by the deadbeat principle.Two alternative voltage vector combinations were obtained.The optimal duration time of the voltage vector was obtained by a simplified method based on the minimization analysis of the value function.The improved method was used to quickly select the two voltage vector combinations and act on the motor.The proposed algorithm can reduce the amount of calculation while maintaining good control performance.Through the simulation experiment,the current fluctuation and phase current distortion are effectively reduced.
作者
邓斌
张博
艾雄雄
王杰
张立昌
DENG Bin;ZHANG Bo;AI Xiongxiong;WANG Jie;ZHANG Lichang(School of Electronic and Information Engineering,Xi’an Polytechnic University,Xi’an 710600,China;Engineering Training Center,Xi’an Polytechnic University,Xi’an 710600,China)
出处
《微特电机》
2024年第1期58-62,69,共6页
Small & Special Electrical Machines
基金
西安市青年托举计划资助项目(095920201324)。
关键词
永磁同步电机
模型预测电流控制
电流无差拍
最优作用时间
permanent magnet synchronous motor(PMSM)
model predictive current control(MPCC)
current deadbeat control
optimal duration time
