Umphakeli weyunithi ye-frequency converter braking unit ukukhumbuza ukuthi njengengxenye evame ukusetshenziswa yezinto zikagesi, iziguquli zefrikhwensi zivame ukubhekana nezinkinga ezivamile ezifana nokushisisa ngokweqile kwezinto eziphikisana nokukhishwayo, ukungahambi kahle kwe-CPU, ukungahambi kahle kwezingxenye, ukungahambi kahle kokufaka, ukungahambi kahle kokuphumayo, nokunye.
I-1, Uma amandla okokufaka exhunywe ku-motor okukhiphayo ngokuphambene, azoqhuma;
2, Ukuqhuma kwesiguquli semvamisa kungase kubangelwe izizathu ezimbili:
Ukuqhuma kwe-capacitor
1. Ukuqhuma kwenzeke ngaphakathi kwesiguquli sefrikhwensi ngenxa yesifunda esifushane
⑴ Ngokuvamile, kungenxa yokushisa kwangaphakathi okuphezulu kwesiguquli semvamisa, okuholela ekuqhumeni kwe-capacitor.
⑵ Kuya ngendawo yokusetshenziswa (uma imvelo imbi kakhulu, cabanga ukusebenzisa isiguquli esingavumeli ukuqhuma), noma kungase kube nezinto zangaphandle ezisele ngaphakathi kwesiguquli sefrikhwensi.
2. Izimbangela zokuqhuma kwe-capacitor;
⑴ Ivolthi yokunikezwa kwamandla iphezulu kakhulu
⑵ Ukwehluleka kwe-Capacitor noma ukuvuza. Kufanele kube ngenxa yomswakama ophezulu ekamelweni noma ukuba khona kwamaconsi amanzi ngaphakathi kwesiguquli semvamisa, okubangele isifunda esifushane engxenyeni ethile futhi kwaholela engozini yokuqhuma. Uma kungumshini omdala, kungase kube nesinye isizathu, okungukuthi ibhodi lesifunda le-converter ye-frequency ayigqokisiwe nge-insulation layer. Ibhodi lesifunda lesiguquli esidala se-Omron alikaze lithole ukwelashwa kwe-insulation kanye ne-anti-corrosion. Kungase futhi kuqhume.
Uma imojula ye-IGBT iqhuma ngemva nje kokuba i-inverter ivuliwe, kunqunywa ngokuyisisekelo ukuthi i-IGBT ilahlekisa futhi ibangele ukujikeleza okufushane ku-P no-N, ngaphandle kokuthi kungenzeka kube namaphutha ezintambo zamandla. Kunezizathu eziningi zalesi simo, njengokushintshwa kwezinto zamandla, ama-circuits okushayela, nokunye. Kukhona isifunda esifushane, noma kunenkinga ngebhodi lesifunda sedrayivu, noma isignali ye-trigger ayixhunyiwe kumojula. Kungenzeka futhi ukuthi izintambo ezibuthakathaka zithwala ugesi onamandla. Kukhona into yangaphandle ehambisa ugesi, edala isifunda esifushane. Kungenzeka futhi ukuthi i-voltage iphezulu kakhulu noma izingxenye sezigugile.