Umhlinzeki weyunithi ye-frequency converter braking unit ukukhumbuza ukuthi ekusetshenzisweni kwesiguquli se-frequency, ukukhetha okungalungile kanye nokusetshenziswa kwesiguquli sefrikhwensi ngokuvamile kungabangela isiguquli sefrikhwensi ukuthi singasebenzi ngendlela evamile, futhi kuholele nasekuhlulekeni kwemishini, okuholela ekuphazamisekeni kokukhiqiza kanye nokulahlekelwa kwezomnotho okungadingekile.
1, Izinyathelo zokuqapha zokukhetha nokufaka
Indlela yokukhetha i-converter frequency ngendlela efanele
Kunezinhlobo ezahlukene zeziguquli zefrikhwensi, futhi ukukhetha okulungile kufanele kusekelwe emandleni alinganiselwe, amanje akalwe, i-voltage elinganiselwe, umthamo wokugcwala, kanye nezidingo zokusetshenziswa zamapharamitha ahlukahlukene wesiguquli sefrikhwensi. Ngokuvamile, imisebenzi eyisisekelo yesiguquli semvamisa evamile ingahlangabezana nezidingo zokusetshenziswa okuvamile, kodwa kuya ngesimo. Isibonelo, amandla aphezulu wesiguquli semvamisa kufanele anyuswe ngokuya ngomthwalo kanye nemvelo yokusetshenziswa. Ngaphezu kwalokho, ezinye izimboni ezikhethekile nazo zidinga ukukhethwa kweziguquli zefrikhwensi ezinochwepheshe.
2. Ungasifaka kanjani kahle isiguquli sefrikhwensi
Funda ngokucophelela imanuwali yomsebenzisi kanye nocingo ngokulandela imiyalelo. Ukuze uvimbele ukushaqeka kukagesi okubangelwa ukuvuza ngaphakathi kwesiguquli sefrikhwensi, idivayisi yokuguqula amaza kufanele imiswe ngokuqinile ukuze igweme ukuvuza okubangelwa ukuphazamiseka kwefrikhwensi yomsakazo.
2. Ukusetshenziswa okulungile ngesikhathi sokusebenza
(1) Uma ijubane lemoto lilawulwa isiguquli sefrikhwensi, umsindo nokukhuphuka kwezinga lokushisa kwemoto kuphakeme kunalapho usebenzisa imvamisa yamandla. Lapho i-motor isebenza ngesivinini esiphansi, ngenxa yejubane eliphansi lama-fan fan blades, ukukhuphuka kwezinga lokushisa kwe-motor kuyanda. Kulesi simo, ukunakekelwa kufanele kukhokhwe ekunciphiseni umthwalo ngendlela efanele futhi unake umoya omncane kanye nokupholisa ukuvimbela ukukhuphuka kwezinga lokushisa kwemoto ukuba kudlule umkhawulo omkhulu.
(2) Ukuphazamiseka kwentambo yokuphakelwa kukagesi kufanele kukhuliswe ngokufanelekile. Uma isiguquli sefrikhwensi sixhunywe kugridi yamandla e-low-voltage, uma ibanga phakathi kwesiguquli semvamisa nesiguquli sokusabalalisa liseduze kakhulu, noma uma umthamo wesiguquli sokusabalalisa sikhulu ngokuphindwe izikhathi eziyi-10 kunaleso lesiguquli samafrikhwensi, uma i-impedance yesekethe incane kakhulu, izobangela ukukhuphuka okukhulu kwesiguquli semvamisa ngesikhathi sokufaka, ukuguqula okulimaza ngokuqondile izakhi zokulungisa imvamisa. Ngakho-ke uma i-impedance incane, i-reactor ye-AC kufanele ifakwe phakathi kwe-transformer ne-converter frequency.
3, Ukugcinwa okufanele ngesikhathi sokusebenza
(1) Uma usebenzisa i-frequency converter ukuze uqalise futhi ume ukuze ulawule isivinini, ama-circuit breaker kanye nama-contactor akufanele asetshenziswe ngokuqondile, ngaphandle kwalokho isiguquli sefrikhwensi sizolahlekelwa ukulawula futhi sibangele imiphumela emibi. Ngakho-ke, kulesi simo, esikhundleni sokusebenzisa ama-circuit breakers kanye nabathintana nabo, amatheminali okulawula okuguqula imvamisa kufanele asetshenziselwe ukusebenza.
(2) Lapho ushayela i-motor evamile ene-torque engaguquki usebenzisa i-frequency converter, kuyadingeka ukulawula ubude besikhathi sokusebenza kwesivinini esiphansi, njengoba ukusebenza kwesivinini esiphansi isikhathi eside kungalimaza umphumela wokukhipha ukushisa kwemoto futhi kwandise izinga lokushisa layo. Ngakho-ke, esimweni se-torque yesikhathi eside esinejubane eliphansi, kuyadingeka ukukhetha i-motor frequency frequency.
(3) Phakathi nokunakekelwa kwansuku zonke, kuyadingeka ukuhlola ukuthi ingabe inani lokumelana le-resistor yokubhuleka yangaphandle yesiguquli sefrikhwensi likhulu kunenani elivumelekile le-resistor yokubhuleka elithwelwe isiguquli sefrikhwensi. Uma itheminali ye-resistor yebhuleki ezoxhunywa ixhunywe embobeni engafanele, izobangela ukujikeleza okufushane kuswishi ngesikhathi sokubhuleka. Ngakho-ke, ngenkathi uhlangabezana nezidingo zokubhuleka, kuyadingeka ukwenza ukumelana namabhuleki kukhule ngokufanele.