基于模型预测算法内置永磁同步电机弱磁控制  

Field Weakening Operation Control of Interior Permanent Magnet Synchronous Motor Based onModel Predictive Control

作　　者：李国洪[1] 王鹏 LI Guohong;WANG Peng(Tianjin Key Laboratory of Control Theory and Applications in Complicated Industry System,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学天津市复杂系统控制理论及应用重点实验室,天津300384

出　　处：《组合机床与自动化加工技术》2023年第8期103-107,共5页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：针对内置式永磁同步电机(IPMSM)在弱磁控制阶段的不稳定性以及运行时所产生的转矩和电流波动等问题,提出根据电机不同区域运行特点,将其分区域进行预测控制,提高运行效率与稳定性。该方法将有限集模型预测转矩控制与内置式永磁同步电机相结合,分成3个控制区域,根据电机基速阶段最大转矩电流比和高速弱磁阶段最大转矩电压比控制以及逆变器特点在各区域提出不同的成本函数对电机进行有效约束,然后利用特定的转折条件使区域之间平稳过渡,完成电机转速的提升。方法能够实现电机在不同控制区域的稳定运行,有效发挥电机潜能,保证电机高功率输出。通过仿真验证了该方法的正确性与可靠性。Aiming at the instability of the interior permanent magnet synchronous motor(IPMSM)in the field weakening control stage and the torque and current fluctuations generated during operation,it is proposed to predict and control the operation of the motor in different regions according to its operating characteristics in different regions to improve the operating efficiency and stability.This method combines the finite set model prediction torque control with the interior permanent magnet synchronous motor,divides it into three control areas,and proposes different cost functions to effectively constrain the motor according to the maximum torque per ampere in the motor base speed stage and the maximum torque per voltage control in the high-speed field weakening stage and the inverter characteristics,and then use specific turning conditions to make a smooth transition between regions to complete the increase of motor speed.The method can realize the stable operation of the motor in different control areas,effectively exert the potential of the motor,and ensure the high power output of the motor.The correctness and reliability of the proposed method are verified by simulation.

关 键 词：内置式永磁同步电机 模型预测控制 弱磁控制 稳定性 

分 类 号：TH165[机械工程—机械制造及自动化] TG68[金属学及工艺—金属切削加工及机床]