异步电机定子磁链的间接观测方法

磁场控制是实现高性能交流调速方法（矢量控制、直接转矩控制等）的基础。目前，为了尽可能地减少调速系统对电机参数特别是转子参数的依赖，提高控制系统的鲁棒性，按定子磁场控制的磁场控制法已越来越得到重视。磁场控制的关键是磁链的正确计算，本文仔细分析了目前常用的几种异步电机定子磁链的观测方法，讨论了各自的实质及其优缺点，通过数值仿真对其误差收敛性及由参数变化造成的观测误差进行了定量分析。

Indirect Stator Flux Linkage Calculation Methods of Induction Motor

Field control is the base of high-performance control strategy of AC motor(vector control,direct torque control,etc). For decrease the dependence of motor's parameters,especially rotor parameters,to increase control system's robustness,attention has been put in flux control using stator flux more and more recently. The key of field control is how to truly calculate the flux linkage. This paper widely analyses some popular used sta- tor flux linkage calculation methods of induction motor,discusses their essence and their advantage or disadvan- tage. Furthermore,this paper gives quantitative analysis of calculation errors caused by variable parameters and it's convergence using simulation.