【摘要】 通过分析电机软起动的工作原理可知,影响电机起动特性的关键是晶闸管的初始触发角和动态过程中触发角的增量。基于此,提出了最小电流的模糊控制方法。以电流和电流的变化为输入量,通过模糊控制得到晶闸管的触发角,使电机可靠起动,同时通过最小电流控制实现节能。更多还原

【Abstract】 In this paper the fuzzy control based on the minimum current is proposed.By analyzing the operation of the soft starter,the key factors affecting the dynamic performance are the initial trigger angle of thyristor and its increment during starting.The closedloop control is realized to start the motor reliably with the current and the error of current as the input variables.And the energy saving is acquired by controlling the minimum current.更多还原