Ukusetyenziswa kwe-MOSFET kwisekethe yokuqhuba ye-DC brushless motor

Kubomi bethu bemihla ngemihla, iinjini ze-DC brushless aziqhelekanga, kodwa enyanisweni, iinjini ze-DC brushless, eziqulunqwe ngumzimba wemoto kunye nomqhubi, ngoku zisetyenziswa ngokubanzi kumacandelo obuchwepheshe obuphezulu obunje ngemoto, izixhobo, ulawulo lwemizi-mveliso, ukuzenzela kunye nokuzenzela. I-aerospace, ngenxa yokusebenza kwayo okuthembekileyo, akukho kuguga kunye nokukrazula, izinga eliphantsi lokungaphumeleli, ubude bokuphila ngaphezu kwe-motor brushed bunyuke malunga namaxesha ama-6 kunye nezinye izibonelelo. Kungenxa yokuba i-DC brushless motor inendima ebaluleke kakhulu, ukuze unikeze umdlalo opheleleyo ekusebenzeni kwayo, khetha i-MOSFET efanelekileyo yokuqhuba isekethe nayo ibaluleke kakhulu.

Imoto ye-DC inempendulo ekhawulezayo, ukuqala kwe-torque, ukusuka kwisantya se-zero ukuya kwisantya esilinganiselweyo kunokubonelela ngokusebenza kwetorque, kodwa iingenelo zemoto ye-DC zikwayintsilelo, kuba i-DC motor ukwenzela ukuvelisa i-torque eqhubekayo phantsi kokusebenza komthwalo olinganisiweyo, intsimi yemagnethi ye-armature kunye ne-rotor magnetic field kufuneka igcinwe kwi-90 ° rhoqo, efuna ukufezekiswa ngeebrashi zekhabhoni kunye ne-rectifier. Iibrashi zekhabhoni kunye nezilungisi zivelisa iintlantsi kunye nothuli lwekhabhoni xa imotor ijikeleza, ngoko ke ukongeza ekudaleni umonakalo kumacandelo, anokusetyenziswa kwizicelo ezilinganiselweyo.

Ukuba ufuna ukuphucula ukusebenza kwemoto yokuqhuba, kufuneka uqale kumacandelo ombane, aI-MOSFETekwazi ukuqhuba isekethe kakuhle kakhulu ibaluleke kakhulu, kule mfuno yokusebenza ye-DC brushless motor, i-Guanhua Weiye ine-N-channel ekhethekileyo yokuphucula i-FETs yamandla aphezulu, kunye nentlawulo ephantsi, i-low reverse transfer capacitance, isantya sokutshintsha ngokukhawuleza kunye ezinye iimpawu.

Ngexesha elifanayo, okuI-MOSFETingasetyenziselwa ukuqhuba oomatshini bokuwelda kunye nokutshintsha izixhobo zombane.