摘要
为了实现异步电动机在轻载或空载运行时,通过降低其工作电压达到节能经济运行的目的,从异步电动机的T型简化模型着手,对异步电动机的能耗进行了详细分析。采用控制晶闸管导通角的相控调压方式,引入功率因数角自整定PID控制算法,再结合电动机电流反馈,设计了一种异步电动机可跟踪负载的节电控制器。该控制器集自动跟踪负载,轻载节能和断相、过载、三相不平衡、逆相等多种保护功能于一体,且在电动机启动过程中可实现软启动功能,使启动电流小,机械冲击小,实现了一个控制器完成多种控制功能的目的。经在132KW1600T摩擦压力机上使用,节电率高达39%,节能效果明显。
In order to save energy and operate economically by lowering the operating voltage during the asynchronous motor running in light -load or no -load,this paper starts from its simplified model T and analyzes the energy consumption in detail,and designs an asynchronous motor variable load buck energy -saving controller which can automatically track the load.The power factor angle of self -tuning PID control algorithm,combined with the motor current feedback,is presented and the energy -saving controller is designed with the protection functions of light load and open phase,overload,three -phase unbalance and reverse phase.In addition,the soft start function is realized,in low current and mechani-cal shock,and achieve the purpose of a controller with a variety of control functions.The experiment shows that the power saving rate is as high as 39% on the friction pressure machine of 132KW1600T, and energy -saving effect is obvious.
出处
《微处理机》
2016年第1期72-75,共4页
Microprocessors
基金
河海大学国家级大学生创新训练计划资助项目(201510294034)
关键词
异步电动机
可变负载
降压节电
晶闸管导通角
相控调压
软启动
Asynchronous motor
Variable load
Energy-saving
Conduction angle of the thyristor
Phase control
Soft start
