摘要
为了提高内置式永磁同步电机(IPMSM)直接转矩控制系统的动态品质及鲁棒性,使系统在暂态、稳态过程中具有更优良的特性,提出了将直接转矩控制与线性-滑模变结构控制相结合的策略,分别采用转矩、磁链线性(PI)-滑模控制器取代了传统直接转矩控制中的滞环或PI控制器,该控制器分别根据转矩、磁链给定量与反馈量的误差动态调节平衡增益,使其实现线性控制与滑模开关控制的平衡关系,满足系统的控制需求。理论分析及实验结果表明,这种控制策略可极大地减小了磁链及转矩脉动,增大了调速范围,同时仍保持直接转矩控制固有的转矩快速响应特征,在负载恒定或突变条件下系统具有快速跟踪、鲁棒性强的优点,有效改善了系统的动、静态运行性能。
In order to improve the robustness and performance of the permanent magnet synchronous machine drives system based on the direct torque control method,a direct torque and linear sliding-mode variable structure control of PMSM drive is presented. The drive employs two new controllers, to replace conventional hysteresis controllers, to improve response of the drive and to reduce the impulsive motion of the torque and flux by regulation the balance gain between the linear and nonlinear sliding-mode. Theoretical analysis and experiments confirm the strong robustness and the ability of tracking load variation quickly, preserve quickly dynamic torque response merit, which effectively improves dynamic and static performance.
出处
《控制工程》
CSCD
北大核心
2015年第1期144-149,共6页
Control Engineering of China
基金
国家自然基金项目(F010507)
陕西省教育厅项目(14JK1362)
关键词
内置式永磁同步电机
线性-滑模控制
变结构控制
直接转矩控制
interior permanent magnet synchronous motor
linear-sliding control
variable structure control
direct torque control
