直接转矩控制系统的研究

Research on direct torque control system

首先简要介绍直接转矩控制的发展背景,基本原理及其应用范围;其次介绍直接控制的基本特点,它不像矢量控制那样需要复杂的坐标变换;接着简要介绍异步电动机的基本数学模型,得出电机转矩的基本计算公式;之后介绍电机的磁链模型,包括u-i模型及u-i-n模型,并对两种模型的优缺点进行对比分析;最后建立直接转矩控制的仿真模型,并简要分析仿真结果。

This passage firstly introduces the background of the direct torque control, basic principle and applications.After that,the passage introduces the basic features of the direct torque control.Unlike the vector control,the direct torque control needs no complicated coordinate transformation.Later,it introduces the basic mathematical model of the asynchronous motor,from which it gives the result of the basic formula for calculating of the torque.Later it comes to introduce the magnetic chain model,including the u-i model and u-i-n model,and analyzes the advantages and disadvantages.At last, it builds the simulation model and simply analyzes the simulation results.