电力系统自动化Issue(16)：115-120,126,7.DOI:10.7500/AEPS20131023016
一种永磁同步电机定子磁链和电磁转矩观测器
A Stator Flux and Electromagnetic Torque Observer for Permanent Magnet Synchronous Motor
摘要
Abstract
In the wind power generation system,wind power generators need to accurately control the torque according to the torque command from the master control system.In the traditional control system,the current command is directly calculated according to the torque command and then it is controlled by the current closed-loop.However,because of the influence of the parameters,the torque control accuracy is lowered as a result.For this reason,this paper proposes a stator flux and electromagnetic torque observer for the permanent magnet synchronous motor (PMSM) based on a full order sliding mode observer.Compared with the traditional voltage model based flux observer,the proposed observer has overcome the problems of integral initial value and integral drift.Compared with the traditional current model based flux observer,the proposed observer is independent of the parameters of the inductance and permanent magnet flux linkage.Based on the observed stator flux,the electromagnetic torque can be accurately observed.In addition,the torque control accuracy can be greatly improved by the torque closed-loop.Simulation and experimental results have verified the effectiveness of the proposed algorithm. This work is supported by National Natural Science Foundation of China(No.5 1377040).关键词
永磁同步电机/磁链观测器/电磁转矩控制/风力发电/转矩闭环Key words
permanent magnet synchronous motor (PMSM)/flux observer/electromagnetic torque control/wind power generation/torque closed-loop引用本文复制引用
朱云国,阚超豪..一种永磁同步电机定子磁链和电磁转矩观测器[J].电力系统自动化,2014,(16):115-120,126,7.基金项目
国家自然科学基金资助项目(51377040)。 （51377040）
