指数规则的永磁同步电机逆变器死区效应补偿  

Index-rule Dead-time Effect Compensation for PMSM Inverter

作　　者：朱渊渤[1] 白瑞林[1] 吉峰[1] 王长江[1] 

机构地区：[1]轻工过程先进控制教育部重点实验室,江南大学,智能控制研究所,江苏无锡214122

出　　处：《电力电子技术》2012年第10期103-105,共3页Power Electronics

基　　金：国家自然科学基金项目(60804013)~~

摘　　要：在传统的平均死区电压补偿方法基础上提出一种新型改进方法。根据补偿电压与负载电流的关系,在小电流时准确地补偿畸变电压,避免了因补偿电压不准确造成的电流波动。采用三相电流同步采样的方法消除电流共模噪声,解决了小电流情况下电流方向检测问题。实验结果表明:该方法能够有效补偿死区效应,减小电流谐波,改善电机低速响应性能,目前已经应用于小功率交流伺服低速控制。A new improved dead-time compensation method is proposed on the basis of the traditional average voltage method.According to the relationship of compensation voltage and load current, compensation voltage is more accuracy when load current is small.To removing the current common-mode noise, a three-phase current synchronous sampling method is proposed which solves the direction detection problem when current is small.The experimental results show that this method can effectively compensate dead-time effect, reduce the current harmonics and improve the low-speed motor response performance.It has been used in the small power AC servo speed control.

关 键 词：永磁同步电机 逆变器 死区效应 

分 类 号：TM351[电气工程—电机]