摘要
介绍了永磁同步电机(PMSM)直接转矩控制(DTC)理论,研究了零电压矢量的作用。基于开关次数最小提出了选择零电压矢量的策略,给出了一种新型含零电压矢量开关表。仿真结果表明使用新型开关表PMSM DTC系统能正常驱动。与传统开关表相比,使用新型开关表DTC系统开关次数降低了近56%,进而降低了开关损耗。
The theory of direct torque control(DTC)in permanent magnet synchronous motor(PMSM)was investigated.The effect of zero voltage vectors for the PMSM DTC drives was analyzed.The strategy of selecting zero voltage vector was proposed based on the minimum switching times,and a new switching table with zero voltage vectors was given.Simulation results showed that the PMSM DTC system could work properly using the new table.Switching times of the DTC system using new switching table were decreased by direct torque control nearly56%compared to conventional switching table,therefore,switching loss was decreased.
作者
李耀华
曲亚飞
师浩浩
孟祥臻
焦森
LI Yaohua;QU Yafei;SGI Haohao;MENG Xiangzhen;JIAO Sen(School of automobile, Chang’ an University, Xi’an 710064,China)
出处
《电机与控制应用》
2018年第2期34-39,共6页
Electric machines & control application
基金
国家自然科学基金项目(51207012)
陕西省工业科技攻关项目(2016GY-069)
陕西省微特电机及驱动技术重点实验室开放基金项目(2013SSJ2002)
关键词
永磁同步电机
直接转矩控制
零电压矢量
开关表
permanent magnet synchronous motor (PMSM)
direct torque control (DTC)
zero voltage vector
