摘要
传统的异步电动机直接转矩控制在低速段由于纯积分环节中定子电阻的影响对磁链的观测不稳定,将造成磁链和转矩脉动过大,限制了实用范围.针对这一不足,本文引进新的磁链观测方法,即带自适应补偿低通滤波器模型,对其进行仿真实验.结果表明,该模型能够较好地改善磁链轨迹,转矩、电流脉动均得到有效控制,能够保证系统的控制品质,具有工程实用价值.
The traditional direct torque control for asynchronous motor in low speed region is unstable due to influence of the stator resistance on flux observation,which will make the flux and the torque ripple too large,limiting the utility range.To solve this problem,this paper introduces a new flux observation method,with adaptive compensation lowpass filter model,and carries on the simulation experiment.The simulation results show that the model can well improve flux trajectory with torque and current ripple under effective control,thus ensure the quality of the control system,with higher engineering.
出处
《安徽工程大学学报》
CAS
2012年第1期53-55,共3页
Journal of Anhui Polytechnic University
基金
安徽省高校自然科学基金资助项目(kj2008a21zc)
