Umhlinzeki weyunithi ye-braking uyakukhumbuza ukuthi i-frequency converter ineyunithi yokubhuleka (amandla aphansi ayi-resistor yokubhuleka, amandla aphezulu i-transistor yamandla aphezulu i-GTR kanye nomjikelezo wayo wokushayela), amandla aphansi akhiqizwa ngaphakathi, futhi amandla aphezulu akhiqizwa ngaphandle.
Lapho umshini osebenzayo udinga ukubhuleka ngokushesha, futhi phakathi nesikhathi esidingekayo, amandla okuvuselela kabusha esiguquli semvamisa awakwazi ukugcinwa ku-capacitor emaphakathi phakathi kwebanga le-voltage elishiwo noma isixhasi sangaphakathi sokubhuleka asikwazi ukusisebenzisa ngesikhathi, okubangela ukugcwala ngokweqile engxenyeni ye-DC, ingxenye yangaphandle yokubhuleka idinga ukungezwa ukusheshisa ukusetshenziswa kwamandla okuvuselela.
Ingabe i-variable frequency motor isesimweni esikhiqizayo uma ipakiwe, njengoba ifakwe ibhuleki eliwumshini?
Ngokuvamile, lapho isiguquli se-frequency sima ngokushesha kakhulu, i-motor izonikeza amandla empendulo ku-converter ye-frequency, futhi injini izoba sesimweni sokukhiqiza Kunganqunywa ukuthi i-motor isesimweni sokukhiqiza ngokubheka i-voltage yebhasi ye-converter frequency. Okokufaka kwe-AC 380V. I-voltage ye-DC icishe ibe ngu-550V.
Ingabe iyunithi yokubhuleka yesiguquli sefrikhwensi iyasebenza ngalesi sikhathi?
Ngemuva kokugcwala ngokweqile kwe-converter frequency. Iyunithi yokubhuleka evamile inomkhawulo wokubhuleka. Ukweqa lo mkhawulo. Iyunithi yokubhuleka izosebenza.
Izizathu zokulimala kweyunithi yamabhuleki
(1) Ukungafani kwamandla, amandla eyunithi yokubhuleka mancane kakhulu (i-resistor noma i-chopper mancane kakhulu) ukuthi asebenzise amandla e-kinetic amaningi kangaka ngesikhathi esifushane.
(2) Umthwalo udlule amandla amakhulu avumelekile eyunithi yokubhuleka ngenxa yezizathu ezithile.
(3) Iyunithi yebhuleki inokukhipha ukushisa okungekuhle ngenxa yothuli noma ezinye izizathu. Kwenze kushise futhi konakele.
(4) Iyunithi yokubhuleka yonakaliswe ngenxa yesifunda esifushane sangaphakathi esibangelwa uthuli oluqhutshwayo.