名称:三相异步电动机变频调速系统设计6摘要:变频器是交流电气传动系统的一种,是将交流工频电源转换成电压、频率均可变的适合交流电机调速的电力电子变换装置,英文简称VVVF(VariableVoltageVariableFrequency)本设计的思路是先以PLC控制变频器,再用变频器再对电机进行调速。关键词:异步电机变频器plc调速Abstract:TheinverterisapowerelectronicconversiondeviceofACelectrictransmissionsystem,whichconvertsACpower-frequencyvoltageandfrequencytobefitforACmotorspeedcontrol,andiscalledVVVF(VariableVoltageVariableFrequency).ThedesignisbasedonthatthePLCcontrolstheinverter,andthentheinvertercontrolsthespeedofthemotors.