无速度传感器三电平逆变器异步电动机直接转矩控制系统(II)——基于全阶定子磁链观测器的参数和速度辨识

Sensorless Direct Torque Control of Induction Motor Fed by Three Level Inverter(II) ——Parameters and Speed Identification Based on Full Order Stator Flux Observer

在固定合成矢量的控制算法基础上,提出了一种基于定子磁链的自适应全阶观测器的三电平逆变器供电异步电动机直接转矩控制(DTC)方法,在准确观测磁链的同时能够进行电动机定子电阻和转子转速辨识。实验结果证明本文提出的方法实现了三电平逆变器供电异步电动机高性能无速度传感器直接转矩控制系统运行。

A high performance sensor-less three-level DTC system based on an adaptive full-order stator flux observer is presented. Good steady state and dynamic performance have been achieved by fully digital control and precise estimation of rotor speed based on DSP, and this is proved by experimental results.