绕线转子异步电动机的控制线路.ppt

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1、.手动控制串联电阻降压启动,电路组成分析,M3,L1L2L3,FU1,FU2,KM1,KM2,KH,SB1,SB2,KM1,KM2,KM1,KM2,KH,U,V,W,QS,KM2,KT,KM1,2.时间继电器控制串联电阻降压启动,KT,课题七 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。,1.按钮操作控制线路,L1L2L3,FU1,KM1,FU2,FR,SB5,QS,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM3,KM2,KM,R1,R2

2、,R3,FR,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,FR,FR,L1L2L3,KM1,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,R1,R2,R3,SB2,SB3,SB4,按下SB2KM1线圈得电KM1触头闭合绕线转子串联R2,R3启动,FU1,FU2,QS,FR,FR,L1L2L3,KM1,SB5,SB1,K

3、M2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,R1,R2,R3,SB2,SB3,SB4,按下SB3KM2线圈得电KM2触头闭合绕线转子串联R3启动,FU1,FU2,QS,FR,FR,L1L2L3,KM1,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,R1,R2,R3,SB2,SB3,SB4,按下SB4KM3线圈得电KM3触头闭合绕线转子切除全部电阻运行,FU1,FU2,QS,FR,FR,L1L2L3,KM1,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,SB

4、2,SB3,SB4,松开SB4电动机继续运行,R1,R2,R3,FU1,FU2,QS,FR,FR,2.时间继电器自动控制线路,L1L2L3,FU1,KM1,FU2,FR,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,FR,电路组成分析,L1L2L3,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SB1KM线圈得电,

5、KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,FR,QS,FR,L1L2L3,M3,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,FR,QS,FR,L1L2L3,M3,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

6、合KM1线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,FR,QS,FR,L1L2L3,M3,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,FR,QS,FR,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2

7、,KT2延时闭合触头闭合KM2线圈得电,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,FR,QS,FR,L1L2L3,M3,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,FR,QS,FR,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3

8、,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,FR,QS,FR,L1L2L3,M3,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,FR,QS,FR,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,

9、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,FR,QS,FR,思考:KM1,KM2,KM3的常闭触点的作用.,接触器，KM2、KM3、KM4的常闭触头串联在KM1线圈回路中的作用,保证电动机在转子回路中电阻全部加入的条件下才能起动。当KM2、KM3、KM4的任一个常闭触头因熔焊或其它原因没有恢复闭合时，KM1线圈因无通路而不能获电.,3.电流继电器自动控制电路,L1L2L3,FU1,3,FU2,FR,SB2,QS,SB1,KM,

10、KM,KA1,KM2,KM,R2,R1,KA2,FR,KA1,KA,KM3,KA3,R3,KA3,KM1,KM1,KM2,KM3,KA2,KA,KM,KM1,KM2,KM3,电路组成分析,L1L2L3,FU1,3,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SB1KM线圈得电,FU2,FR,QS,FR,L1L2L3,FU1,3,SB2,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KA1,KA,KM3,KA3,R3,KA3

11、,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,FR,QS,FR,L1L2L3,FU1,3,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,FR,QS,FR,L1L2L3,FU1,3,SB2,SB1,KM,KM,KA1,KM2,KM,R2,R1,KA2,KA1,KA,KM3

12、,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,FR,QS,FR,L1L2L3,FU1,3,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,FR,QS,FR,L1L2L3,FU1,3,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,FR,QS,FR,中间继电器KA的作用,中间继电器KA的作用是为KM1、KM2、KM3线圈提供通路，而且保证起动开始时，全部电阻都接入转子电路。因为只有中间继电器KA获电，且KA的常开触头闭合后，才能为电流继电器FA1、FA2、FA3的常闭触头提供通路，然后才能逐级短路切除电阻。,