船舶异步电动机常用控制电路-三相异步电动机的制动控制线路

三相异步电动机的制动控制线路电气制动机械制动制动控制类型课程导入Courseintroduction

提高生产效率及准确停位要求电动机能迅速停车，对电动机进行制动控制三相异步电动机从切除电源到完全停止运转为什么需要制动控制呢？不能适应某些生产机械工艺的要求惯性课程导入Courseintroduction

拖动系统减速或加速停车电气制动用于船用锚机起货机位能性负载的匀速下降课程导入Courseintroduction

Electricalbraking制动控制的类型Type制作目的电磁铁操纵机械进行制动的电磁机械制动电气制动使电动机产生一个与转子原来转动方向相反的力矩来进行制动反接制动制作方法准确、迅速停车工作安全能耗制动常用的电气制动电容制动回馈制动电气制动Electricbraking电动机产生一个和电动机实际旋转方向相反的电磁转矩使电动机迅速停转反接制动Reversebrake反接制动原理在停车时，把电动机反接，则其定子旋转磁场便反向旋转在转子上产生的电磁转矩亦随之变为反向，成为制动转矩电气制动Electricbraking反接制动Reversebrake单向启动反接制动控制原理M3～L1L2L3FU1FU2KM1KM2KHSB1KM1SB2KM2KM1KM2KHQSＲKM1nKSKM2KS合上电源开关QS电气制动Electricbraking反接制动ReversebrakeM3～L1L2L3FU1FU2KM1KM2KHSB1KM1SB2KM2KM1KM2KHQSＲKM1nKSKM2KS按下SB1KM1线圈得电单向启动反接制动控制原理电气制动Electricbraking反接制动ReversebrakeM3～L1L2L3FU1FU2KM1KM2KHSB1KM1SB2KM2KM1KM2KHQSＲKM1nKSKM2KSKM1自锁触头闭合，自锁松开SB1KM1主触头闭合电动机启动，运行在转速高到一定值时，KS闭合单向启动反接制动控制原理电气制动Electricbraking反接制动ReversebrakeM3～L1L2L3FU1FU2KM1KM2KHSB1KM1SB2KM2KM1KM2KHQSＲKM1nKSKM2KS按下SB2KM1失电释放KM2线圈得电电动机串联电阻反接，反接制动KM2自锁触头闭合KM2主触头闭合停单向启动反接制动控制原理电气制动Electricbraking反接制动ReversebrakeM3～L1L2L3FU1FU2KM1KM2KHSB1KM1SB2KM2KM1KM2KHQSＲKM1nKSKM2KS松开SB2继续反接制动停单向启动反接制动控制原理电气制动Electricbraking反接制动ReversebrakeM3～L1L2L3FU1FU2KM1KM2KHSB1KM1SB2KM2KM1KM2KHQSＲKM1nKSKM2KS当转速降低到一定值时KS断开KM2线圈失电各触头复位n单向启动反接制动控制原理电气制动Electricbraking能耗制动Energyconsumptionbraking立即在定子线组的任意两相中通入直流电利用转子感应电流受静止磁场的作用以达到制动目的电动机切断交流电源电气制动Electricbraking电路组成能耗制动M3～L1L2L3KM1KHSB1KM1SB2KM2KM1KM2KHKM1KTKM2VUWQSFU1FU2KTKTKM2KM2V电气制动ElectricbrakingEnergyconsumptionbraking能耗制动EnergyconsumptionbrakingM3～L1L2L3KM1KHSB1KM1SB2KM2KM1KM2KHKM1KTKM2VUWQSFU1FU2KTKTKM2KM2V单向启动能耗制动自动控制电路工作原理合上电源开关QS按下SB1KM1线圈得电电气制动Electricbraking能耗制动M3～L1L2L3KM1KHSB1KM1SB2KM2KM1KM2KHKM1KTKM2VUWQSFU1FU2KTKTKM2KM2V单向启动能耗制动自动控制电路工作原理KM1自锁触头闭合KM1主触头闭合KM1联锁触头分断电气制动Electricbraking能耗制动M3～L1L2L3KM1KHSB1KM1SB2KM2KM1KM2KHKM1KTKM2VUWQSFU1FU2KTKTKM2KM2V单向启动能耗制动自动控制电路工作原理按下SB2KM1线圈失电KM1自锁触头分断KM1主触头分断KM1联锁触头闭合KM2线圈得电KT线圈得电电气制动Electricbraking能耗制动M3～L1L2L3KM1KHSB1KM1SB2KM2KM1KM2KHKM1KTKM2VUWQSFU1FU2KTKTKM2KM2V单向启动能耗制动自动控制电路工作原理KM2自锁触头闭合KM2主触头分断闭合电动机半波能耗制动KM2联锁触头分断KT瞬时闭合触头闭合松开SB2电气制动Electricbraking能耗制动M3～L1L2L3KM1KHSB1KM1SB2KM2KM1KM2KHKM1KTKM2VUWQSFU1FU2KTKTKM2KM2V单向启动能耗制动自动控制电路工作原理KT延时断开触头延时分断KM2线圈失电KT线圈失电各触头复位电气制动Electricbraking能耗制动有变压器桥式整流能耗制动控制电路工作原理合上电源开关QS按下SB1KM1线圈得电FU2KHSB1KM1SB2KM1KM2KTKTKTKM2KM2KM1M3～L1L2L3FU1KM1QSFU3VCTCKHRKM2VUW3KM2电气制动Electricbraking能耗制动有变压器桥式整流能耗制动控制电路工作原理FU2KHSB1KM1SB2KM1KM2KTKTKTKM2KM2KM1M3～L1L2L3FU1KM1QSFU3VCTCKHRKM2VUWKM2KM1自锁触头闭合KM1主触头闭合KM1联锁触头分断松开SB13电气制动Electricbraking能耗制动有变压器桥式整流能耗制动控制电路工作原理FU2KHSB1KM1SB2KM1KM2KTKTKTKM2KM2KM1M3～L1L2L3FU1KM1QSFU3VCTCKHRKM2VUWKM23按下SB1KM1线圈失电KM1自锁触头分断KM1主触头分断KM1联锁触头闭合KM2线圈得电KT线圈得电电气制动Electricbraking能耗制动有变压器桥式整流能耗制动控制电路工作原理FU2KHSB1KM1SB2KM1KM2KTKTKTKM2KM2KM1M3～L1L2L3FU1KM1QSFU3VCTCKHRKM2VUWKM23KM2自锁触头闭合KM2主触头分断闭合电动机半波能耗制动KM2联锁触头分断KT瞬时闭合触头闭合松开SB1电气制动Electricbraking能耗制动有变压器桥式整流能耗制动控制电路工作原理FU2KHSB1KM1SB2KM1KM2KTKTKTKM2KM2KM1M3～L1L2L3FU1KM1QSFU3VCTCKHRKM2VUWKM23KT延时断开触头延时分断KM2线圈失电KT线圈失电各触头复位电气制动Electricbraking电容制动Capacitorbraking立即在电动机定子绕组的出线端接入电容器来迫使电动机迅速停转的方法电动机切断交流电源电气制动Electricbraking电容制动Capacitorbraking电容制动电路工作原理当旋转着的电动机断开交流电源时，转子内仍有剩磁随着转子的惯性转动，形成一个随转子转动的旋转磁场该磁场切割定子绕组产生感生电动势，并通过电容器回路形成感生电流电流产生的磁场与转子绕组中的感生电流相互作用，产生一个与旋转方向相反的制动力矩，使电动机受制动迅速停转电气制动Electricbraking合上电源开关QS按下SB1KM1线圈得电电容制动CapacitorbrakingM3～L1L2L3FU1FU2KM1KM2KHSB1SB2KM1KM1KM1KM2KHUVWQSRKM1＝＝＝KTKTKM2电容制动电路工作原理电气制动Electricbraking电容制动M3～L1L2L3FU1FU2KM1KM2KHSB1SB2KM1KM1KM1KM2KHUVWQSRKM1＝＝＝KTKTKM2电容制动电路工作原理KM1自锁触头闭合KM1主触头闭合KM1联锁触头分断KM1辅助触头闭合KT线圈得电KT瞬时闭合延时断开触头闭合松开SB1电气制动Electricbraking电容制动M3～L1L2L3FU1FU2KM1KM2KHSB1SB2KM1KM1KM1KM2KHUVWQSRKM1＝＝＝KTKTKM2电容制动电路工作原理按下SB2KM1线圈失电KM1