一种永磁同步电机交流传动系统SVPWM调制策略死区效应补偿方法  

A research on dead time compensation for SVPWM modulation strategy with PMSMAC drive system

作　　者：黄兰兰 邓小群 HUANG Lan-lan;DENG Xiao-qun(Guizhou Air Control Technology Co.Ltd.,Guiyang,Guizhou 550009,China)

机构地区：[1]贵州航天控制技术有限公司,贵州贵阳550009

出　　处：《宁德师范学院学报（自然科学版）》2020年第3期259-264,共6页Journal of Ningde Normal University(Natural Science)

摘　　要：针对采用空间矢量调制(SVPWM)策略的永磁同步电机(PMSM)交流传动系统,由于死区时间的设置、开关管导通及关断延时、系统采样及模拟数字(AD)转换延时等造成的“死区效应”,因此导致电机相电压、相电流畸变,谐波含量增大,转矩脉动及噪音增大,系统控制性能降低等问题.结合系统一拍延时补偿,提出一种“一拍延时+死区效应在线补偿”的方法.与其他方法相比,所提方法无需电流极性判断,无需逆变器特性参数,实现简单,并通过仿真验证了方法的有效性.For the PMSM AC drive system with SVPWM modulation strategy,an analysis has been made on the problems of the distortion of the motor phase voltage and phase current,the increase of harmonic content and torque ripple and noise,and the decrease of the system control performance,the causes of which were the dead-time setting,on and off delay on switching,the delay of the system sampling and AD conversion.A method of one beat delay+dead time on-line compensation method is proposed based on the analysis.Compared with other methods,the proposed method does not need current polarity judgment and inverter characteristic parameters,and is simple to implement.Finally,the effectiveness of the proposed method is verified by simulation.

关 键 词：交流传动系统 永磁同步电机(PMSM) 死区效应 一拍延时补偿 

分 类 号：TM341[电气工程—电机]