基于SVPWM的异步发电机模糊直接转矩控制系统仿真

为了解决电机传统直接转矩控制方法中存在转矩和磁链脉动大的问题,本文在研究异步发电机、正弦脉宽调制（SVPWM）、及直接转矩控制算法的基础上,提出了改进型异步发电机直接转矩控制算法。利用Matlab/Simulink仿真平台搭建了异步发电机直接转矩控制算法系统仿真模型,包括电机模块、测量模块、逆变模块、速度和转矩计算调节模块等,并进行系统的仿真分析。从结果可知,与传统异步发电机直接转矩控制算法相比较,改进型直接转矩控制系统控制精度高明显提高、响应速度得到改善、鲁棒特性好,证明了该控制算法的有效性与可行性。

Simulation of asynchronous generators fuzzy direct torque control system based on SVPWM

In order to solve the problem of existence of torque and flux pulsation in the traditional motor direct torque control method, based on the research of asynchronous generator, sinusoidal pulse width modulation （SVPWM）, and direct torque con- trol algorithm, improved asynchronous generators direct torque control algorithms were put forward. System simulation models of asynchronous generator direct torque control the algorithm were built using Matlab/Simulink simulation platform, which con- sist of the motor module, measurement module, inverter module, speed and torque adjustment module, and system simulation analysis was also achieved. It is noted from the results that in comparison with traditional asynchronous generator direct torque control algorithm, accuracy of the improved direct torque control system was significantly improved, the response speed was quicker, robustness is enhanced, which certifies the effectiveness and feasibility of the control algorithm.