摘要
提出了一种有效磁链滑模定子磁链观测器。与一般滑模磁链观测器不同的是该观测器并不包含转速自适应环节,从而避免了由于转速估计误差所导致的磁链观测性能下降。采用Lyapunov稳定性理论证明了观测器渐近收敛。通过实时估计有效磁链信息,间接计算出电机转速,从而实现内置式永磁同步电机(IPMSM)的无速度传感器直接转矩控制。仿真结果表明了该方法的有效性。
A sliding-mode observer based on"active flux"concept was proposed.Different from the conventional stator flux linkage observer,this observer was not consisted of the speed adaptive loop.Therefore,it was immune to estimate of speed error which would make the performance of the observer worsen.The Lyapunov stability theory was employed to prove that the observer was asymptotically stable.By using the estimated active flux angle,the motor speed could be calculated.As a result,the speed sensor-less IPMSM direct torque control drive was achieved.Simulation results are presented to validate the effectiveness of the proposed method.
作者
张兴华
刘伟
ZHANG Xinghua;LIU Wei(College of Electrical Engineering and Control Science,Nanjing Tech University,Nanjing 211816,Jiangsu,China)
出处
《电气传动》
北大核心
2017年第7期7-11,共5页
Electric Drive
基金
国家自然科学基金(51477073)
江苏省自然科学基金(BK20161549)
关键词
内置式永磁同步电机
有效磁链
滑模观测器
无速度传感器
直接转矩控制
interior permanent magnet synchronous motor
active flux
sliding-mode observer
speed sensor-less
direct torque control
