基于测量矢量插入法的双电机相电流重构  

Phase current reconstruction of two motors based on measurement vector insertion method

作　　者：耿强[1] 余朝阳 周湛清 GENG Qiang;YU Zhaoyang;ZHOU Zhanqing(School of Electrical Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学电气工程学院,天津300387

出　　处：《天津工业大学学报》2024年第6期80-88,共9页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(52077154);天津市自然科学基金资助项目(23JCYBJC00290);天津市教委科研计划项目重点资助项目(2019ZD09)。

摘　　要：针对五桥臂逆变器驱动双永磁同步电机系统进行相电流重构存在电流重构盲区、有效矢量采样法在电流重构盲区内无法准确完成电流重构等问题。基于安装在直流母线上的单电流传感器,分析了五相电流重构原理以及电流重构盲区,进而提出了一种测量矢量插入法,实现了盲区内2台电机的相电流重构,并利用重构的相电流进行双电机的独立闭环控制。仿真结果表明:本文算法实现了五桥臂逆变器驱动双永磁同步电机系统的相电流重构,2台电机的相电流重构误差较小,重构的相电流用于电机控制不会对电机的稳态性能造成影响,并且2台电机均具有良好的动态性能。The phase current reconstruction of the dual permanent magnet synchronous motor system driven by the five-leg inverter has problems such as current reconstruction blind area and the inability of the effective vector sampling method to accurately complete the current reconstruction in the current reconstruction blind area.Based on a single current sensor installed on the DC bus,the principle of five-phase current reconstruction and the current reconstruction blind area is analyzed,and then a measurement vector insertion method is proposed to achieve the phase current reconstruction of the two motors in the blind area,and the reconstructed phase current is used to perform independent closed-loop control of the dual motors.The simulation results show that the algorithm in this paper realizes the phase current reconstruction of the dual permanent magnet synchronous motor system driven by the five-leg inverter,the phase current reconstruction errors of the two motors are small,the reconstructed phase currents are used for motor control without affecting the steady-state performance of the motors,and both motors have good dynamic performance.

关 键 词：双永磁同步电机 五桥臂电压源逆变器(FL-VS1) 单电流传感器 相电流重构 测量矢量插入法 

分 类 号：TM341[电气工程—电机] TM351