摘要
针对牵引异步电动机的高速弱磁区定子磁链最佳给定值问题,深入分析了直接转矩控制的系统结构和数学模型,提出了一种基于滞环控制的自动寻优定子磁链的弱磁方案。通过仿真和实验验证了新的弱磁策略能自动寻求最优磁链,提高电动机带载能力。
Aiming at the optimal reference of stator flux in flux-weakening region of traction asynchronous motor, deeply analyzes the system structure and mathematical model of direct torque control are deeply analyed.Then a fluxweakening method based on hysteresis control is proposed.The simulation and experimental results show that the new flux-weakening strategy can automatically seek the optimal flux linkage and improve the load capacity of the motor.
作者
肖航
刘莹
赵韵政
程善美
XIAO Hang;LIU Ying;ZHAO Yun-zheng;CHENG Shan-mei(Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《电力电子技术》
CSCD
北大核心
2018年第12期28-31,共4页
Power Electronics
关键词
牵引异步电动机
直接转矩控制
弱磁策略
自动寻优
traction asynchronous motor
direct torque control
flux-weakening strategy
automatic optimization
