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1、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,FU2,KH,SB5,QS,SB1,K
2、M2,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,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,KH,KH,L1L2L3,KM1,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
3、串联R2,R3启动,FU1,FU2,QS,KH,KH,L1L2L3,KM1,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,L1L2L3,KM1,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,L1L2L3,KM
4、1,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,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,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM
5、1,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,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,SB2,SB1,KM3,KM,KM,KT3,KM2,KM
6、1,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,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,SB2,SB1,KM3,
7、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,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
8、,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,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,L1L
9、2L3,M 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,FU1,3,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,
