Umphakeli weyunithi ye-frequency converter braking unit ukukhumbuza ukuthi esinye sezizathu eziyinhloko esenza ukuthi ama-frequency converter adlale indima ebaluleke kakhulu ekukhiqizweni kwezimboni ukuthi athembela ku-IGBT yangaphakathi ukuze alungise i-voltage kanye nemvamisa yokuphuma kwamandla kagesi, anikeze amandla kagesi adingekayo ngokwezidingo zangempela zenjini, ngaleyo ndlela afeze ukonga amandla kanye nokulawulwa kwejubane. Yiziphi izindlela nezindlela zokuvikela amamotho aneziguquli zemvamisa?
1. Okukhiphayo kwesiguquli sokuvikela imvamisa yokuvikela i-overvoltage kunomsebenzi wokuthola i-voltage. Isiguquli sefrikhwensi singazilungisa ngokuzenzakalelayo i-voltage ephumayo ukuze sivimbele injini ukuthi imelane ne-overvoltage futhi sisebenze ngaphakathi kwebanga le-voltage elimisiwe.
2. Ngaphansi kokuvikelwa kwamandla kagesi: Uma i-voltage yemoto ingaphansi kuka-90% we-voltage evamile (ezinye zisethelwe ku-85%), ukuvikelwa kwesiguquli se-frequency kuyama.
3. Ukuvikelwa kwe-Overcurrent: Uma i-current motor idlula amasekhondi angu-150%/3 yenani elilinganiselwe, noma ama-microseconds angu-200%/10 wamanje olinganiselwe, isiguquli sefrikhwensi siyama ukuze sivikele injini.
4. Ukuvikelwa kwesigaba sokulahlekelwa kuqapha i-voltage ephumayo. Uma kukhona ukulahleka kwesigaba kokuphumayo, isiguquli sefrikhwensi siyakhala futhi siyama ngaso leso sikhathi ukuze sivikele injini.
5. I-inverter enokuvikelwa kwesigaba esibuyela emuva ingasethwa ukuze ijikeleze injini endaweni eyodwa kuphela, futhi isiqondiso sokuzungeza asikwazi ukusethwa. Ngaphandle kwalapho umsebenzisi eshintsha ukulandelana kwesigaba sezintambo zamamotho A, B, no-C, akukho nokwenzeka kwesigaba sokuhlehla.
6. Ukuvikela ukulayisha ngokweqile: Isiguquli sefrikhwensi siqapha amandla amanje enjini. Uma i-motor current idlula u-120% wesethi elinganiselwe yamanje iminithi elingu-1, isiguquli sefrikhwensi siyama ukuze sivikele injini.
7. Isiguquli semvamisa yokuvikela phansi sifakwe isekethe yokuvikela ephansi, ngokuvamile eyakhiwa ama-transformer okuvikela aphansi kanye nama-relay. Uma isigaba esisodwa noma ezimbili zimisiwe, isiguquli sefrikhwensi sizocisha ngokushesha. Kunjalo, uma kucelwe umsebenzisi, singaphinda sidizayine ukuze sivikele ukuvala shaqa ngokushesha ngemva kokubekwa phansi.
8. Ukuvikelwa kwesekethe emfushane: Ngemuva kokuthi okukhiphayo kwesiguquli sefrikhwensi kufinyezwa yisifunda esifushane, nakanjani kuzodala ukudlulela ngokweqile. Ngaphakathi kwama-microsecond ayi-10, isiguquli semvamisa sizoma ukuze sivikele injini.
9. Isiguquli sefrikhwensi yokuvikela i-overclocking sinemisebenzi yomkhawulo wefrikhwensi enkulu kanye nencane, ekhawulela imvamisa yokuphumayo ebangeni elishiwo, ngaleyo ndlela kuzuzwe umsebenzi wokuvikela ukweqisa.
10. Ukuvikelwa kwetafula ngokuvamile kusebenza kumamotho avumelanayo. Kumamotor asynchronous, i-stall ngesikhathi sokusheshisa ibonakala ngokudlulele, futhi isiguquli semvamisa sifeza lo msebenzi wokuvikela ngokuvikela okudlulele kanye nokulayisha ngokweqile. Ukuma ngesikhathi sokuncishiswa kungagwenywa ngokubeka isikhathi esiphephile sokwehlisa izinga ngesikhathi senqubo yokulungisa iphutha.