An Improved DTC Algorithm for Reducing Torque Ripples of PMSM Based on Cloud model and SVM
There are big ripples on current and electromagnet torque under traditional hysteresis direct torque control (HDTC) on motor drive system. To solve these problems, a two dimension cloud model controller is designed to instead traditional hysteretic comparator in this paper, and zero voltage vectors are used to further reduce ripples. The torque error, the flux error and stator flux position are used to select two adjacent active vectors and its ratio of active time. Zero voltage vectors effective time is determine by the output of cloud model controller based on the torque error magnitude and flux error magnitude. Arranging the inverter switching in this manner, results in fast torque response and minimum torque ripples as compared to the traditional HDTC. The simulation results have verified the effectiveness of this method.
Permanent Magnet Synchronous Motor Direct Torque Control Cloud model Torque Rippl
Li Ningzhou Wei Xiaojuan Li Ningzhou Feng Xiaoyun
School of Electrmechanical Engineering Lanzhou Jiaotong University Lanzhou,Gansu,China School of Electrical Engineering Southwest Jiaotong University Chengdu,Sichuan,China
国际会议
南京
英文
274-277
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）