基于转矩滞环结构优化的零电压矢量作用分析  

The Function Analysis of Zero Voltage Vector Based on the Structure of the Torque Hysteresis in Optimizing

作　　者：崔皆凡[1] 王鸿雪 秦超[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《组合机床与自动化加工技术》2014年第4期38-40,共3页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：辽宁省科技厅资助基金项目(201202167)

摘　　要：为了提高永磁同步电机直接转矩控制在高速加工中心、精密磨床等场合的控制性能,从零电压矢量的作用原理入手,深入的分析了永磁同步电机直接转矩控制系统中零电压矢量的作用以及转矩滞环比较器结构的改变对转矩波动的影响。与传统转矩滞环比较器相比,采用滞环宽度优化的转矩滞环比较器,通过合理添加零电压矢量,使转矩波动明显减小。利用Matlab仿真平台,证明了转矩滞环宽度相同时,系统速度越低转矩波动越小。在系统速度相同时,转矩滞环比较器滞环宽度越大转矩波动越小。In order to improve the performance of permanent magnet synchronous motor direct torque control such as high speed machining center and precision grinder, from the principle of zero voltage vector func- tion, it analyzes the role of zero voltage vector in the Permanent magnet synchronous motor control system and the impact on Torque hysteresis comparator structure of rotating torque fluctuations deeply. Compared with the traditional torque hysteresis comparator, the hysteresis width optimized torque hysteresis comparator reduces torque ripple obviously, by adding zero voltage vectors reasonably. Using the Matlab simulation platform, it proves that under the condition of the same width of hysteresis the smaller the system speeds the smaller the torque ripples, and under the condition of the same system speed the greater the hysteresis width, the smaller the torque ripple.

关 键 词：永磁同步电机 直接转矩控制 零电压矢量 转矩滞环比较器 

分 类 号：TH16[机械工程—机械制造及自动化] TG65[金属学及工艺—金属切削加工及机床]