摘要
针对异步电动机直接启动过程中存在的问题,研究了一种基于模糊自适应PID控制的异步电动机转矩斜坡启动方式。通过异步电动机恒转矩负载机械特性的分析,推导出了转矩斜坡启动方式的数学模型。利用Matlab软件中的电气系统模块库和模糊逻辑工具箱,建立了基于模糊自适应PID控制的异步电机软启动系统的仿真模型,并进行了仿真。仿真结果表明恒转矩负载下模糊自适应PID控制的转矩斜坡软启动方式正确有效,可以有效地减小启动过程中对电网的冲击,降低了对拖动系统的不利影响,同时启动过程平稳。
Considering the existing problems as asynchronous motor start up directly,a torque slope start-up mode for asynchronous motor was studied based on self-adaptive fuzzy PID control.Through analysis of mechanical characteristics of asynchronous motor with constant torque,the mathematic model of torque slope start-up mode for asynchronous motor based on self-adaptive fuzzy PID control was established.The power system blackest and the fuzzy logic toolbox in Matlab were used to built the simulation model and simulink.The simulation results show that the soft-starting mode is correct and effective,reduces the shock to the electrical network and the adverse effects on the drag system and make asynchronous motor start up very smoothly.
出处
《电气传动》
北大核心
2010年第5期49-52,共4页
Electric Drive
基金
辽宁省教育厅科研项目(20060386)
关键词
异步电动机
软启动
模糊自适应PID
转矩斜坡
仿真
asynchronous motor
soft-starting
self-adaptive fuzzy PID
torque slope
simulation
