基于三电平逆变器直接转矩控制的开关矢量优化  

Switch Vector Optimization of Three-level Inverters for Direct Torque Control

作　　者：隗宇 张欢仁[1] 李勇[1] 

机构地区：[1]上海船舶运输科学研究所,上海200135

出　　处：《上海船舶运输科学研究所学报》2014年第4期7-12,共6页Journal of Shanghai Ship and Shipping Research Institute

摘　　要：研究了二极管中点箝位型三电平逆变器的优化控制策略。在直接转矩控制系统中,基于新型固定矢量合成方法,采用多级滞环比较器,更加充分有效地利用合成矢量对开关矢量进行优化,从而减小转矩脉动,提高系统响应速度。通过Matlab仿真,验证了该方法设计合理,与传统系统相比,优化后系统的控制性能明显提升。This paper studies the optimized control strategy of the neutral point diode clamped （NPC）three-level inverter. Based on the fixed vector synthesis method, the switch vectors are optimized to decrease the torque ripple and improve response speed by means of the multi-level hysteresis comparators and the synthesized vectors. Matlab simulation result proves that the optimi- zing method features significantly improved control performance compared to conventional system.

关 键 词：三电平逆变器 中点箝位 多级滞环比较器 开关矢量 直接转矩控制 

分 类 号：TM464[电气工程—电器]