课题八绕线转子异步电动机的控制线路

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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L1L2L3FU1KM1M3～3FU2KHSB5QSSB1KM2KM3KMKM

2、1KM3KM2KM1KM3KM2KMR1R2R3KHSB2SB3SB4电路组成分析KML1L2L3KM13SB5SB1KM2KM3KMKM1KM3KM2KM1KMKM3KM2KMR1R2R3SB2SB3SB4合上QS按下SB1绕线转子串联全部电阻启动FU1FU2QSM3～KHKHM3～L1L2L3KM13SB5SB1KM2KM3KMKM1KM3KM2KM1KMKM3KM2KMR1R2R3SB2SB3SB4按下SB2KM1线圈得电KM1触头闭合绕线转子串联R2,R3启动FU1FU2QSKHKHM3～L1L2L3KM13SB5SB1KM2KM3KMKM1KM3KM2KM1KMKM3KM

3、2KMR1R2R3SB2SB3SB4按下SB3KM2线圈得电KM2触头闭合绕线转子串联R3启动FU1FU2QSKHKHM3～L1L2L3KM13SB5SB1KM2KM3KMKM1KM3KM2KM1KMKM3KM2KMR1R2R3SB2SB3SB4按下SB4KM3线圈得电KM3触头闭合绕线转子切除全部电阻运行FU1FU2QSKHKHM3～L1L2L3KM13SB5SB1KM2KM3KMKM1KM3KM2KM1KMKM3KM2KMSB2SB3SB4松开SB4电动机继续运行R1R2R3FU1FU2QSKHKH3.时间继电器自动控制线路L1L2L3FU1KM1M3～3FU2KHSB2QSS

4、B1KM2KM3KMKMKT3KM3KM2KM1KM3KM2KM1KMR1KT1KT2KT3R2R3KMKM1KM2KM3KM3KT1KT2KH电路组成分析L1L2L3M3～3SB2SB1KM3KMKMKT3KM2KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2合上QS按下SB1KM线圈得电KM1KM2KM3KMKT1KT2KT3FU1FU2KHQSKHL1L2L3M3～3SB2SB1KM3KMKMKT3KM2KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2KM触头闭合绕线转子串联全部电阻启动KT1线圈得电KM1KM2KM3K

5、MKT1KT2KT3FU1FU2KHQSKHL1L2L3M3～3SB2SB1KM3KMKMKT3KM2KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2KT1延时闭合触头闭合KM1线圈得电KM1KM2KM3KMKT1KT2KT3FU1FU2KHQSKHL1L2L3M3～3SB2SB1KM3KMKMKT3KM2KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2KM1触头闭合绕线转子串联R2,R3启动KT2线圈得电KM1KM2KM3KMKT1KT2KT3FU1FU2KHQSKHL1L2L3M3～3SB2SB1KM3KMKMKT3KM2

6、KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2KT2延时闭合触头闭合KM2线圈得电KM1KM2KM3KMKT1KT2KT3FU1FU2KHQSKHL1L2L3M3～3SB2SB1KM3KMKMKT3KM2KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2KM2触头闭合绕线转子串联R3启动KT3线圈得电KM1KM2KM3KMKT1KT2KT3FU1FU2KHQSKHL1L2L3M3～3SB2SB1KM3KMKMKT3KM2KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2KT3延时闭合触头闭合KM3线圈

7、得电KM1KM2KM3KMKT1KT2KT3FU1FU2KHQSKHL1L2L3M3～3SB2SB1KM3KMKMKT3KM2KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2KM3触头闭合绕线转子切除全部电阻运行KM1KM2KM3KMKT1KT2KT3FU1FU2KHQSKHL1L2L3M3～3SB2SB1KM3KMKMKT3KM2KM1KM3KM2KM1R1R2R3KMKM1KM2KM3KM3KT1KT2KM3动断触头断开KT1线圈失电K