初级永磁直线电机逆变器补偿无电流控制  

Current Sensorless Control of Primary Permanent Magnet Linear Motor Based on Inverter Compensation

作　　者：余强国 冯亚南 王培良 申情 YU Qiang-guo;FENG Ya-nan;WANG Pei-liang;SHEN Qing(School of Science and Engineering,Huzhou College,Huzhou 313000,China;School of Engineering,Huzhou University,Huzhou 313000,China)

机构地区：[1]湖州学院理工学院,浙江湖州313000 [2]湖州师范学院工学院,浙江湖州313000

出　　处：《控制工程》2022年第5期804-812,共9页Control Engineering of China

基　　金：国家自然科学基金资助项目(61802123)。

摘　　要：为消除初级永磁直线电机无电流传感器控制中的电流跟踪误差,提出一种逆变器非线性补偿的新型无电流传感器控制策略。首先,根据实测电流和估测电流存在唯一对应关系,将正常动子视为参考动子,控制两台动子的估测电流保持相同,进而保证了实测电流的一致性;然后,在估测电流的计算中采用逆变器非线性补偿策略,削弱了估测电流和实测电流唯一对应关系中的误差项;最后,采用仿真实验测试所提容错控制的性能,结果表明,相比于现有控制策略,所提容错控制策略在稳态性能与瞬态性能上均更优,具有更广的工程应用前景。In order to eliminate the current tracking error in the current sensorless control of the primary permanent magnet linear motor, a novel current sensorless control strategy of inverter non-linear compensation is proposed. First, according to the unique correspondence between the measured current and the estimated current, the healthy mover is regarded as the reference mover, and the estimated currents of the two movers are controlled to remain the same, thereby ensuring the consistency of the measured currents. Then, in the calculation of estimated current, the inverter non-linear compensation strategy is used to weaken the error term in the unique correspondence between the estimated current and the measured current. Finally, the performance of the proposed fault-tolerant control is tested by simulation experiments. The results show that, compared with the existing control strategies, the proposed fault-tolerant control strategy is better in steady-state performance and transient performance, and has a wider application prospect in engineering.

关 键 词：初级永磁直线电机 容错控制 电流传感器 无电流传感器控制 逆变器非线性补偿 

分 类 号：TM3[电气工程—电机]