Xa i-inverter ehambelanayo ikhethelwe i-motor frequency variable, olu vavanyo lulandelayo lulandelayo kufuneka lwenziwe ngesiseko sohlalutyo olucacileyo lweempawu zomthwalo phantsi kweemeko zokwenyani zokusebenza kwemoto: 1) ukuhambelana kombane we-inverter ngokwayo; 2) akukho mthwalo, umthwalo, iimpawu zokusebenza zohlengahlengiso ezifana ne-vibration kunye nengxolo ngexesha lesantya.
1 Umthwalo wetorque rhoqo
Xa ukulawulwa kwesantya sokuguqulwa kwesantya senziwa phantsi komthwalo we-torque rhoqo, i-torque yokumelana kwi-shaft ye-motor output iya kuhlala ingatshintshi ngexesha lenkqubo yokwandisa okanye yokunciphisa isantya, kodwa ixabiso eliphezulu lesantya sokunyuka alivunyelwe ukuba lidlule kwi-rated. isantya, kungenjalo i-motor iya kutshiswa ngenxa yokusebenza komthwalo ogqithisileyo.Kwinkqubo yokunyuka kwesantya, akukho torque yokumelana kuphela, kodwa kunye ne-inertia torque yokuthintela utshintsho lwesantya, ukuze i-torque kwi-motor shaft idlule i-torque elinganisiweyo yemoto, kunye neempazamo ezahlukeneyo zombane zinokubakho ngenxa ye-shaft. ukuphuka okanye ukufudumala kwee-windings.Into ebizwa ngokuba yi-regulation yesantya se-torque eqhubekayo ibhekisela kwi-torque eqhubekayo kwi-shaft ye-output ye-motor xa isantya sihlengahlengiswa kuso nasiphi na isantya sokusebenza okuzinzileyo, kwaye inamandla okuqhuba umthwalo we-torque rhoqo.Kwinkqubo yokunyuka kwemoto okanye ukuncipha, ukuze ucuthe ixesha lenkqubo yenguqu, ngaphakathi koluhlu oluvumelekileyo lwamandla omatshini wemoto kunye nokunyuka kobushushu bemoto, i-motor shaft kufuneka ikwazi ukuvelisa isantya esikhulu ngokwaneleyo okanye i-torque ye-braking, ukuze i-motor ikwazi ukungena ngokukhawuleza kwisantya sokujikeleza rhoqo. i-torque eqhuba imo.
2 Umthwalo wamandla rhoqo
Uphawu lwe-torque-speed yamandla angaguqukiyo lubhekiselele kwinto yokuba amandla abonelelwa yimoto kufuneka ahlale rhoqo xa isixhobo okanye umatshini utshintsha kwisantya sokusebenza. Iimfuno zeempawu zetorque ephezulu kunye nesantya esiphezulu, oko kukuthi, i-motor kufuneka ikwazi ukuqhuba i-torque eguquguqukayo kunye nemithwalo yamandla eqhubekayo.
Xa i-voltage ye-motor inyuka ngokunyuka kwe-frequency, ukuba i-voltage ye-motor ifikelele kwi-voltage elinganisiweyo ye-motor, ayivumelekanga ukuqhubeka nokunyusa i-voltage ngokunyuka kwe-frequency, kungenjalo ukugquma kwemoto kuya kuba. yaphukile ngenxa yomthamo omkhulu .Ngenxa yesi sizathu, emva kokuba i-motor ifikelele kwi-voltage elinganisiweyo, nokuba i-frequency iyanda, i-motor voltage ihlala ingatshintshi. Amandla anokuthi aphuhliswe yimoto agqitywe yimveliso yombane olinganisiweyo kunye nomlinganiselo okhoyo wemoto, kwaye okwangoku ayisatshintshi ngokuphindaphindiweyo. Iphumelele i-voltage eqhubekayo, ikhoyo ngoku kunye nokusebenza kwamandla rhoqo.
Ngaphandle kwamandla aqhubekayo kunye nomthwalo oqhubekayo we-torque, ezinye izixhobo zisebenzisa amandla ahluka kakhulu ngesantya sokusebenza.Kwizixhobo ezifana nabalandeli kunye neepompo zamanzi, i-torque yokumelana ilingana ne-2nd ukuya kwe-3 yamandla esantya sokuhamba, oko kukuthi, uphawu lokunciphisa umthwalo we-square torque, kufuneka ukhethe kuphela i-inverter yokugcina amandla ngokwenqanaba elilinganisiweyo; Ukuba i-motor isetyenzisiwe, iimfuno zokusebenza kwemoto ngexesha lonke lokuqalisa inkqubo ukusuka ekumeni ukuya kwisantya esiqhelekileyo sokubaleka kufuneka zithathelwe ingqalelo ngakumbi.
Ixesha lokuposa: May-13-2022