摘要
为解决传统PMSM直接转矩控制系统中存在定子磁链和电磁转矩脉动较大的问题,将传统直接转矩控制系统中的滞环比较器和PI速度调节器分别用指数趋近律的滑模变参数控制器和变参数PI速度控制器代替,并且将直接转矩控制和空间矢量调制技术结合,以此构建了改进后的PMSM直接转矩控制系统,仿真研究表明,新系统能有效减小转矩脉动,使逆变器的开关管频率稳定,同时保持了直接转矩控制转矩响应快速,强鲁棒性的优良动态性能。
In order to solve the problems of stator flux and the electromagnetic torque ripples which are larger intraditional PMSM direct torque control system,exponential reaching law sliding mode variable parameter controllerand variable parameter PI speed controllers were used to replace hysteresis comparator and PI speed regulator,andthe direct torque control was conbined with space vector modulation technology to build the improved PMSM directtorque control system.simulation results show that the new system can effectively reduce the torque ripple and keepstability of the inverter switch frequency,while maintaining the direct torque control torque response fast and strongrobustness,excellent dynamic performance.
作者
韩维敏
李世军
HAN Weimin;LI Shijun(College of Wind Energy Engineering,Hunan Vocational Institute of Technology,Xiangtan 411000,Hunan,China;College of Electrical & Information Engineering,Hunan Institute of Engineering,Hunan Provincial Key Laboratory of Wind Generator and Its Control,Xiangtan 411101,Hunan,China)
出处
《电气传动》
北大核心
2017年第3期8-11,共4页
Electric Drive
基金
湖南省教育厅项目(15C0643)
关键词
永磁同步电机
直接转矩控制
空间矢量调制
滑模变结构
变参数PI
permanent magnet synchronous motor
direct torque control(DTC)
space vector modulation
sliding mode variable structure
variable parameter PI
