课题八绕线转子异步电动机的控制线路

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,课题八 绕线转子异步电动机的控制线路,YR,系列 符号,绕线转子三相异步电动机，可以通过滑环在转子绕组中串接电阻来改善电动机的机械特性，从而达到减小启动电流、增大启动转矩以及调节转速的目的。,一、转子绕组串接电阻启动控制线路,1.,转子串接三相电阻启动原理,启动时，在转子回路串入作,Y,形连接、分级切换的三相启动电阻器，以减小启动电流、增加启动转矩。随着电动机转速的升高，逐级减小可变电阻。启动完毕后，切除可变电阻器，转子绕组被直接短接，电动机便在额定状态下运行。,转子串接三相对称电阻器,转子串接三相不对称电阻器,2.,按钮操作控制线路,L1L2L3,FU1,KM1,M,3,3,FU2,KH,SB5,QS,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM3,KM2,KM,R1,R2,R3,KH,SB2,SB3,SB4,电路组成分析,KM,L1L2L3,KM1,3,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,R1,R2,R3,SB2,SB3,SB4,合上,QS,按下,SB1,绕线转子串联全部电阻启动,FU1,FU2,QS,M,3,KH,KH,M,3,L1L2L3,KM1,3,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,R1,R2,R3,SB2,SB3,SB4,按下,SB2,KM1,线圈得电,KM1,触头闭合,绕线转子串联,R2,R3,启动,FU1,FU2,QS,KH,KH,M,3,L1L2L3,KM1,3,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,R1,R2,R3,SB2,SB3,SB4,按下,SB3,KM2,线圈得电,KM2,触头闭合,绕线转子串联,R3,启动,FU1,FU2,QS,KH,KH,M,3,L1L2L3,KM1,3,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,R1,R2,R3,SB2,SB3,SB4,按下,SB4,KM3,线圈得电,KM3,触头闭合,绕线转子切除全部电阻运行,FU1,FU2,QS,KH,KH,M,3,L1L2L3,KM1,3,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,SB2,SB3,SB4,松开,SB4,电动机继续运行,R1,R2,R3,FU1,FU2,QS,KH,KH,3.,时间继电器自动控制线路,L1L2L3,FU1,KM1,M,3,3,FU2,KH,SB2,QS,SB1,KM2,KM3,KM,KM,KT3,KM3,KM2,KM1,KM3,KM2,KM1,KM,R1,KT1,KT2,KT3,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KH,电路组成分析,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,合上,QS,按下,SB1,KM,线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM,触头闭合,绕线转子串联全部电阻启动,KT1,线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KT1,延时闭合触头闭合,KM1,线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM1,触头闭合,绕线转子串联,R2,R3,启动,KT2,线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KT2,延时闭合触头闭合,KM2,线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM2,触头闭合,绕线转子串联,R3,启动,KT3,线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KT3,延时闭合触头闭合,KM3,线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM3,触头闭合,绕线转子切除全部电阻运行,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,L1L2L3,M,3,3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM3,动断触头断开,KT1,线圈失电,KT1,触头断开,KM1,线圈失电,KM1,触头断开,KT2,线圈失电,KT2,触头断开,电动机继续运转,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,4.,电流继电器自动控制电路,L1L2L3,FU1,M,3,3,FU2,KH,SB2,QS,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KH,KA1,KA,KM3,KA3,R3,KA3,KM1,KM1,KM2,KM3,KA2,KA,KM,KM1,KM2,KM3,电路组成分析,L1L2L3,FU1,M,3,3,SB2,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KA1,KA,KM3,KA3,R3,KA3,KM1,KM1,KM2,KM3,KA2,KA,KM,KM1,KM2,KM3,合上,QS,按下,SB1,KM,线圈得电,FU2,KH,QS,KH,L1L2L3,FU1,M,3,3,SB2,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KA1,KA,KM3,KA3,R3,KA3,KM1,KM1,KM2,KM3,KA2,KA,KM,KM1,KM2,KM3,KM,触头闭合,绕线转子串联全部电阻启动,K,线圈得电,FU2,KH,QS,KH,L1L2L3,FU1,M,3,3,SB2,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KA1,KA,KM3,KA3,R3,KA3,KM1,KM1,KM2,KM3,KA2,KA,KM,KM1,KM2,KM3,KA,动合触头闭合,因启动电流大,KA1,KA2.KA3,的动断触头断开,继续串联全部电阻启动,FU2,KH,QS,KH,L1L2L3,FU1,M,3,3,SB2,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KA1,KA,KM3,KA3,R3,KA3,KM1,KM1,KM2,KM3,KA2,KA,KM,KM1,KM2,KM3,因速度加快，电流减小，,KA1,欠电流,动断触头闭合,KM1,线圈得电,KM1,触头闭合串联,R2,R3,继续启动,FU2,KH,QS,KH,L1L2L3,FU1,M,3,3,SB2,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KA1,KA,KM3,KA3,R3,KA3,KM1,KM1,KM2,KM3,KA2,KA,KM,KM1,KM2,KM3,因速度再加快电流继续减小,KA2,欠电流,动断触头闭合,KM2,线圈得电,KM2,触头闭合串联,R3,继续启动,FU2,KH,QS,KH,L1L2L3,FU1,M,3,3,SB2,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KA1,KA,KM3,KA3,R3,KA3,KM1,KM1,KM2,KM3,KA2,KA,KM,KM1,KM2,KM3,因速度再加快电流继续减小,KA3,欠电流,动断触头闭合,KM3,线圈得电,KM3,触头闭合切除全部电阻全速运行,FU2,KH,QS,KH,二、转子绕组串联频敏变阻器启动控制线路,频敏变阻器是一种阻抗值随频率明显变化、静止的无触点电磁元件。它实质上是一个铁心损耗非常大的三相电抗器。在电动机启动时，将频敏变阻器串接在转子绕组中，启动完毕短接切除频敏变阻器。,L1L2L3,FU1,FU2,QS,KM1,KM1,KM2,RF,KT,KM2,M,3,KM1,KH,SB2,SB1,KT,KM2,KM2,KM2,3,电路组成分析,KH,L1L2L3,FU1,KM1,KM1,KM2,RF,M,3,SB2,SB1,KT,KM2,KM2,3,合上,QS,按下,SB1,KM1,线圈得电,KT,线圈得电,KT,KM2,KM1,KM2,FU2,QS,KH,KH,L1L2L3,FU1,KM1,KM1,KM2,RF,M,3,SB2,SB1,KT,KM2,KM2,3,KM1,触头闭合,电动机串联频敏电阻启动,KT,KM2,KM1,KM2,FU2,QS,KH,KH,L1L2L3,FU1,KM1,KM1,KM2,RF,M,3,SB2,SB1,KT,KM2,KM2,3,KT,延时闭合触头闭合,KM2,线圈得电,KM2,触头闭合,切除频敏电阻电动机全速运行,KT,KM2,KM1,KM2,FU2,QS,KH,KH,L1L2L3,FU1,KM1,KM1,KM2,RF,M,3,SB2,SB1,KT,KM2,KM2,3,KT,线圈失电,KT,延时闭合触头复位,电动机继续全速运行,KT,KM2,KM1,KM2,FU2,QS,KH,KH,三、凸轮控制器控制线路,中、小容量绕线转子异步电动机的启动、调速及正反转控制，常常采用凸轮控制器来实现，以简化操作，如桥式起重机上大部分采用这种控制线路。,L1L2L3,M,3,QS,I,I,AC8AC9AC7AC6AC5,SA10,SA11,SA12,SA1,SA2,SA3,SA4,SA5,SA6,SA7,SA8,SA9,54321012345,反转 零位 正转,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,电路组成分析,KM,KM,正转,L1L2L3,M,3,QS,I,I,AC8AC9AC7AC6AC5,SA10,SA11,SA12,SA1,SA2,SA3,SA4,SA5,SA6,SA7,