感应电动机智能软启动器研究

摘要

In order to solve the large startup current of induction motors, a fuzzy adaptive control soft start system is presented in this paper. It can control startup current and avoid the inrush of the current for smooth running. According to the characteristic of induction motor, taking current error and error change rate as input quantity and the control angle of thyristor as output quantity, the fuzzy A-daptive control algorithm for the soft startup of induction motors was designed by using fuzzy logical toolbox in Matlab software. In comparison with the traditional PID and traditional fuzzy control methods, the self-adaptive fuzzy control method is more superior.%为了解决三相异步电动机起动电流较大的问题,采用了一种软起动模糊自适应控制器.据其起动特性,将电流误差和误差的变化率作为输入量,晶闸管的控制角作为输出量,设计出一种自调整比例因子的模糊自适应控制算法.随后做了Matlab环境下的仿真实验,并且与常规的PID控制方法和常规模糊控制方法进行比较,得到了模糊自适应控制算法具有优越性的结论.