.,課題八繞線轉子異步電動機的控制線路,YR系列符號,繞線轉子三相異步電動機，可以通過滑環在轉子繞組中串接電阻來改善電動機的機械特性，從而達到減小啟動電流、增大啟動轉矩以及調節轉速的目的。,.,一、轉子繞組串接電阻啟動控制線路,1.轉子串接三相電阻啟動原理啟動時，在轉子回路串入作Y形連接、分級切換的三相啟動電阻器，以減小啟動電流、增加啟動轉矩。隨著電動機轉速的升高，逐級減小可變電阻。啟動完畢后，切除可變電阻器，轉子繞組被直接短接，電動機便在額定狀態下運行。,轉子串接三相對稱電阻器,轉子串接三相不對稱電阻器,.,2.按鈕操作控制線路,.,L1L2L3,FU1,KM1,FU2,KH,SB5,QS,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM3,KM2,KM,R1,R2,R3,KH,SB2,SB3,SB4,電路組成分析,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繞線轉子串聯全部電阻啟動,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SB2KM1線圈得電KM1觸頭閉合繞線轉子串聯R2,R3啟動,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SB3KM2線圈得電KM2觸頭閉合繞線轉子串聯R3啟動,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SB4KM3線圈得電KM3觸頭閉合繞線轉子切除全部電阻運行,FU1,FU2,QS,KH,KH,.,L1L2L3,KM1,SB5,SB1,KM2,KM3,KM,KM1,KM3,KM2,KM1,KM,KM3,KM2,KM,SB2,SB3,SB4,松開SB4電動機繼續運行,R1,R2,R3,FU1,FU2,QS,KH,KH,.,3.時間繼電器自動控制線路,.,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,電路組成分析,.,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線圈得電,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM觸頭閉合繞線轉子串聯全部電阻啟動KT1線圈得電,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KT1延時閉合觸頭閉合KM1線圈得電,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM1觸頭閉合繞線轉子串聯R2,R3啟動KT2線圈得電,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KT2延時閉合觸頭閉合KM2線圈得電,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM2觸頭閉合繞線轉子串聯R3啟動KT3線圈得電,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KT3延時閉合觸頭閉合KM3線圈得電,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM3觸頭閉合繞線轉子切除全部電阻運行,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,L1L2L3,M3,SB2,SB1,KM3,KM,KM,KT3,KM2,KM1,KM3,KM2,KM1,R1,R2,R3,KM,KM1,KM2,KM3,KM3,KT1,KT2,KM3動斷觸頭斷開KT1線圈失電KT1觸頭斷開KM1線圈失電KM1觸頭斷開KT2線圈失電KT2觸頭斷開電動機繼續運轉,KM1,KM2,KM3,KM,KT1,KT2,KT3,FU1,FU2,KH,QS,KH,.,4.電流繼電器自動控制電路,.,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,電路組成分析,.,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線圈得電,FU2,KH,QS,KH,.,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,KM觸頭閉合繞線轉子串聯全部電阻啟動K線圈得電,FU2,KH,QS,KH,.,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動合觸頭閉合因啟動電流大,KA1,KA2.KA3的動斷觸頭斷開,繼續串聯全部電阻啟動,FU2,KH,QS,KH,.,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,因速度加快，電流減小，KA1欠電流,動斷觸頭閉合KM1線圈得電KM1觸頭閉合串聯R2,R3繼續啟動,FU2,KH,QS,KH,.,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,因速度再加快電流繼續減小KA2欠電流,動斷觸頭閉合KM2線圈得電KM2觸頭閉合串聯R3繼續啟動,FU2,KH,QS,KH,.,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,因速度再加快電流繼續減小KA3欠電流,動斷觸頭閉合KM3線圈得電KM3觸頭閉合切除全部電阻全速運行,FU2,KH,QS,KH,.,二、轉子繞組串聯頻敏變阻器啟動控制線路,頻敏變阻器是一種阻抗值隨頻率明顯變化、靜止的無觸點電磁元件。它實質上是一個鐵心損耗非常大的三相電抗器。在電動機啟動時，將頻敏變阻器串接在轉子繞組中，啟動完畢短接切除頻敏變阻器。,.,L1L2L3,FU1,FU2,QS,KM1,KM1,KM2,RF,KT,KM2,KM1,KH,SB2,SB1,KT,KM2,KM2,KM2,電路組成分析,KH,.,L1L2L3,FU1,KM1,KM1,KM2,RF,SB2,SB1,KT,KM2,KM2,合上QS按下SB1KM1線圈得電KT線圈得電,KT,KM2,KM1,KM2,FU2,QS,KH,KH,.,L1L2L3,FU1,KM1,KM1,KM2,RF,SB2,SB1,KT,KM2,KM2,KM1觸頭閉合電動機串聯頻敏電阻啟動,KT,KM2,KM1,KM2,FU2,QS,KH,KH,.,L1L2L3,FU1,KM1,KM1,KM2,RF,SB2,SB1,KT,KM2,KM2,KT延時閉合觸頭閉合KM2線圈得電KM2觸頭閉合切除頻敏電阻電動機全速運行,KT,KM2,KM1,KM2,FU2,QS,KH,KH,.,L1L2L3,FU1,KM1,KM1,KM2,RF,SB2,SB1,KT,KM2,KM2,KT線圈失電KT延時閉合觸頭復位電動機繼續全速運行,KT,KM2,KM1,KM2,FU2,QS,KH,KH,.,三、凸輪控制器控制線路中、小容量繞線轉子異步電動機的啟動、調速及正反轉控制，常常采用凸輪控制器來實現，以簡化操作，如橋式起重機上大部分采用這種控制線路。,.,L1L2L3,QS,AC8AC9AC7AC6AC5,54321012345,反轉零位正轉,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,電路組成分析,KM,KM,.,正轉,.,L1L2L3,QS,AC8AC9AC7AC6AC5,54321012345,反轉零位正轉,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,合上QS,按下SB1,KM,KM,.,L1L2L3,QS,AC8AC9AC7AC6AC5,54321012345,反轉零位正轉,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,KM觸頭閉合,KM,KM,.,L1L2L3,QS,AC8AC9AC7AC6AC5,SA10,SA11,SA12,SA1,SA2,SA3,SA4,SA5,SA6,SA7,SA8,SA9,54321012345,反轉零位正轉,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,手輪轉到“正”位置,KM,KM,.,L1L2L3,QS,AC8AC9AC7AC6AC5,SA10,SA11,SA12,SA1,SA2,SA3,SA4,SA5,SA6,SA7,SA8,SA9,54321012345,反轉零位正轉,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,手輪轉到“正”位置,KM,KM,.,L1L2L3,QS,AC8AC9AC7AC6AC5,SA10,SA11,SA12,SA1,SA2,SA3,SA4,SA5,SA6,SA7,SA8,SA9,54321012345,反轉零位正轉,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,手輪轉到“正”位置,KM,KM,.,L1L2L3,QS,AC8AC9AC7AC6AC5,SA10,SA11,SA12,SA1,SA2,SA3,SA4,SA5,SA6,SA7,SA8,SA9,54321012345,反轉零位正轉,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,手輪轉到“正”位置,KM,KM,.,L1L2L3,QS,AC8AC9AC7AC6AC5,SA10,SA11,SA12,SA1,SA2,SA3,SA4,SA5,SA6,SA7,SA8,SA9,54321012345,反轉零位正轉,KA1,SB2,SB1,AC12,SQ1,SA10,KM,KA2,AC10,SQ2,AC11,AC,FU1,FU1,KA1,KA2,AC1,AC4,AC2,AC3,手輪轉到“正”位置,KM,KM,.,反轉,.,L1L2L3,QS,AC8AC9AC7AC6AC5,5432