基于卡尔曼滤波的PMSM驱动器死区补偿  

Dead-time compensation method for PMSM drives based on Kalman Filtering

作　　者：潘扬[1] 徐建明[1] 俞立[1] 于飞[1] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310023

出　　处：《浙江工业大学学报》2011年第3期323-328,共6页Journal of Zhejiang University of Technology

基　　金：浙江省科技厅重大专项基金资助项目(2009C11058);浙江省自然科学基金资助项目(Y1090505)

摘　　要：针对矢量控制永磁同步电机驱动器,提出了一种基于卡尔曼滤波的在线死区补偿方法.通过分析功率器件的通态压降及死区对逆变器输出相电压的影响,给出了死区补偿时间和死区补偿电压的表达式.采用卡尔曼滤波器在线估计两相旋转坐标系中q轴扰动电压,进而计算出死区补偿时间和三相死区补偿电压,最后将各相死区补偿电压与参考电压相加对逆变器死区进行补偿.仿真结果表明:该方法能够较好地消除零电流钳位现象,有效地降低输出电流的脉动.An on-line dead-time compensation method using Kalman filtering is presented for vector-controlled permanent magnet synchronous motor（PMSM） drives.The influence of the dead-time and on-voltage of power devices on the inverter output voltage is analyzed,and a dead-time compensation time（DTCT） and a phase dead-time compensation voltage（DTCV） are respectively formulated.Kalman filtering is used to estimate the q-axis disturbance voltage in two-phase rotating coordinate system,DTCT and three-phase DTCV are calculated.Then the inverter dead-time can be compensated by adding each phase DTCV to the reference voltage.The simulation results show that the zero-current clamping phenomenon can be eliminated well and the ripple of output current can be decreased effectively.

关 键 词：永磁同步电动机 死区补偿 扰动电压 卡尔曼滤波 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]