电机学英文文献翻译————————————————————————————————作者:————————————————————————————————日期: Thethree-phaseinductionmotorspeedcontrolmethodThree-phaseasynchronousmotorspeedformula:N=60f/p(1-s)Canbeseenfromtheaboveformula,changethepowersupplyfrequencyf,,,chopperspeedcontrol,cascadecontrol,icslipclutch,fluidcouplings,-,withhighspeedmethodandinefficientmethodsoftwokindsofspeed:highspeedwhentheslipreferstothesame,sonosliplosses,suchasmulti-speedmotors,Slipfrequencycontrolandlosscanspeedrecoverymethods(suchascascadecontrol,etc.).Adeterioratinglossofspeedcontrolmethodsareinefficientspeed,suchasseriesresistanceoftherotorspeedmethod,theenergylossintherotorcircuiton;lutchThespeedmethod,theenergylossintheclutchcoils;fluidcouplingspeed,,ifnotspeedrange,,variabl
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