izindaba

Imigqa yakazibuthe ekhiqizwe ikhoyili ayikwazi ukudlula yonke ikhoyili yesibili, ngakho-ke i-inductance ekhiqiza indawo kazibuthe evuzayo ibizwa ngokuthi i-leakage inductance. Ibhekisela engxenyeni ye-flux kazibuthe elahlekile phakathi nenqubo yokuhlanganisa ama-transformer ayisisekelo nesesibili.
Incazelo ye-inductance yokuvuza, izimbangela zokuvuza kwe-inductance, ukulimala kokuvuza, izici eziningana ezithinta ukuvuza, izindlela eziyinhloko zokunciphisa inductance yokuvuza, ukukalwa kwe-inductance yokuvuza, umehluko phakathi kokuvuza kokuvuza kanye nokuvuza kwe-flux magnetic.
Ukuvuza kwe-Inductance Definition
I-inductance yokuvuza yingxenye ye-flux kazibuthe elahlekile ngesikhathi sokuhlanganisa okuyisisekelo nesesibili se-motor. I-inductance yokuvuza ye-transformer kufanele kube ukuthi imigqa yamagnetic yamandla ekhiqizwa ikhoyili ayikwazi ukudlula yonke ikhoyili yesibili, ngakho-ke i-inductance ekhiqiza ukuvuza kazibuthe ibizwa ngokuthi i-leakage inductance.
Isizathu sokuvuza kwe-inductance
Ukuvuza kokugeleza kwenzeka ngenxa yokuthi okunye ukugeleza okuyinhloko (okwesibili) akuhlanganiswe nokwesibili (okuyinhloko) ngomongo, kodwa kubuyela kokuyinhloko (kwesibili) ngokuvalwa komoya. I-conductivity yocingo iphindwe izikhathi ezingu-109 kunomoya, kuyilapho ukuvuthwa kwento eyinhloko ye-ferrite esetshenziswa kuma-transformers cishe izikhathi ezingu-104 kuphela zomoya. Ngakho-ke, lapho i-flux kazibuthe idlula isifunda kazibuthe esakhiwe yi-ferrite core, ingxenye yayo izovuza emoyeni, yakhe i-circuit kazibuthe evaliwe emoyeni, okuholela ekuvuzeni kazibuthe. Futhi njengoba i-frequency yokusebenza ikhula, ukufinyeleleka kwe-ferrite core material esetshenzisiwe kuncipha. Ngakho-ke, kuma-frequencies aphezulu, lesi simo sibonakala kakhulu.
Ingozi yokuvuza kwe-inductance
Ukuvuza kwe-inductance kuyinkomba ebalulekile yokushintsha ama-transformers, okunomthelela omkhulu ezinkomba zokusebenza zokushintsha izinto zamandla. Ukuba khona kokuvuza kwe-inductance kuzokhiqiza amandla e-electromotive emuva lapho idivayisi yokushintsha icishiwe, okulula ukubangela ukuphuka kwe-overvoltage yedivayisi yokushintsha; ukuvuza kwe-inductance kungabuye kuhlotshaniswe ne-Capacitance esabalalisiwe kumjikelezo kanye ne-capacitance esabalalisiwe yekhoyili ye-transformer yakha i-oscillation circuit, eyenza i-circuit i-oscillate futhi ikhiphe amandla ka-electromagnetic ngaphandle, okubangela ukuphazamiseka kwe-electromagnetic.
Izici eziningana ezithinta ukuvuza kwe-inductance
Ku-transformer engaguquki eseyenziwe kakade, i-inductance yokuvuza ihlobene nezici ezilandelayo: K: i-coefficient yokuvunguza, elingana ne-inductance yokuvuza. Ukuze uthole ama-windings alula ayisisekelo kanye nesesibili, thatha 3. Uma ukujika kwesibili kanye nokujika okuyinhloko kulinyazwa ngokushintshana Bese, thatha u-0.85, yingakho indlela yokwenza isangweji inconywa, ukuvuza kwe-inductance kwehla kakhulu, cishe ngaphansi kwe-1/3 ye- owokuqala. Lmt: Ubude obumaphakathi bokujika ngakunye kwawo wonke amajika ohlaka lwamathambo Ngakho-ke, abaklami be-transformer bathanda ukukhetha umongo onomongo omude. Uma ijika libanzi, i-inductance yokuvuza iba mancane. Kuzuzisa kakhulu ukunciphisa ukuvuza kwe-inductance ngokulawula inani lokujika lokujika libe lincane. Umthelela we-inductance ubudlelwano be-quadratic. Nx: inani lokujika kokusonta okungu-W: ububanzi obumazombezombe Amathini: ukujiya kokuvala amajika bW: ukujiya kwawo wonke ama-winding we-transformer eqediwe. Kodwa-ke, indlela yokumisa isangweji iletha inkathazo yokuthi amandla e-parasitic ayanda, ukusebenza kahle kuyehla. Lawa mandla abangelwa amandla ahlukene wamakhoyili aseduze wamajika ahlangene. Lapho iswishi ishintshiwe, amandla agcinwe kuyo azokhululwa ngendlela yezipikhi.
Indlela eyinhloko yokunciphisa ukuvuza kwe-inductance
Amakhoyili ahlanganisiwe 1. Iqembu ngalinye lama-winding kufanele alinyazwe ngokuqinile, futhi kufanele asakazwe ngokulinganayo. 2. Imigqa yokuhola kufanele ihleleke kahle, izame ukwenza i-engeli elungile, futhi isondele odongeni lwamathambo 3. Uma ungqimba olulodwa lungenakulimala ngokugcwele, ungqimba olulodwa kufanele lube nenxeba elincane. 4 Isendlalelo se-insulating kufanele sincishiswe ukuze sihlangabezane nezidingo ze-voltage futhi uma kunesikhala esiningi, cabangela uhlaka lwamathambo olude futhi unciphise ukujiya. Uma kuyikhoyili enezingqimba eziningi, imephu yokusabalalisa indawo kazibuthe yezingxenye eziningi zamakhoyili ingenziwa ngendlela efanayo. Ukunciphisa ukuvuza kokuvuza, kokubili okuyisisekelo nesesibili kungahlukaniswa. Ngokwesibonelo, ihlukaniswe yaba primary 1/3 → eyesibili 1/2 → primary 1/3 → secondary 1/2 → primary 1/3 noma primary 1/3 → secondary 2/3 → primary 2/3 → secondary 1/ 3 njll., amandla amakhulu kazibuthe ancishiswa abe ngu-1/9. Kodwa-ke, amakhoyili ahlukaniswe kakhulu, inqubo yokusonta iyinkimbinkimbi, isilinganiso sokuphumula phakathi kwamakhoyili siyanda, isici sokugcwalisa sincishisiwe, futhi ukuvinjelwa phakathi kokuyinhloko nesesibili kunzima. Esimeni lapho ama-voltage okukhiphayo nawokufaka ephansi ngokuqhathaniswa, i-inductance yokuvuza iyadingeka ukuthi ibe mncane kakhulu. Isibonelo, i-transformer yokushayela ingalimaza ngezintambo ezimbili ngokuhambisana. Ngesikhathi esifanayo, ingqikithi kazibuthe enobubanzi obukhulu bewindi nobude iyasetshenziswa, njengohlobo lwebhodwe, uhlobo lwe-RM, nensimbi ye-PM. Umoya-mpilo uzibuthe, ukuze amandla kazibuthe efasiteleni aphansi kakhulu, futhi i-inductance yokuvuza encane ingatholakala.
Isilinganiso sokuvuza kwe-inductance
Indlela evamile yokulinganisa ukuvuza ukuvuza iwukuzungeza ukujikajika kwesibili (okuyinhloko), ukulinganisa ukugeleza kokujika kwamajika okuyinhloko (okwesibili), futhi inani le-inductance eliwumphumela liwukuvuza okuyisisekelo (kwesibili) ukuya kwesibili (okuyinhloko). I-transformer leakage inductance enhle akufanele idlule i-2 ~ 4% ye-magnetizing inductance yayo. Ngokulinganisa ukuvuza kwe-inductance ye-transformer, ikhwalithi ye-transformer ingahlulelwa. I-inductance yokuvuza inomthelela omkhulu kumjikelezo kumafrikhwensi aphezulu. Lapho uvala i-transformer, i-inductance yokuvuza kufanele yehliswe ngangokunokwenzeka. Iningi lezakhiwo ze-"sandwich" ze-primary (secondary) -secondary (primary) -primary (secondary) zisetshenziselwa ukuvunguza i-transformer. ukunciphisa ukuvuza kwe-inductance.
Umehluko phakathi kwe-leakage inductance kanye nokuvuza kwe-magnetic flux
I-inductance yokuvuza ukuhlangana phakathi kokuyinhloko kanye nesesibili lapho kunamawindi amabili noma ngaphezulu, futhi ingxenye ye-flux kazibuthe ayihlanganiswa ngokugcwele nesesibili. Iyunithi ye-inductance yokuvuza ngu-H, ekhiqizwa ukuvuza okuguquguqukayo kazibuthe ukusuka kweyinhloko kuya kweyesibili. Ukuvuza kwe-Magnetic flux kungase kube ukujikajika okukodwa noma ama-winding amaningi, futhi ingxenye yokuvuza kwe-magnetic flux ayikho ohlangothini lwe-flux enkulu kazibuthe. Iyunithi yokuvuza kazibuthe yi-Wb. Ukuvuza kokuvuza kubangelwa ukuvuza kwe-magnetic flux, kodwa ukuvuza kwe-magnetic flux akukhiqizi ukuvuza kokuvuza.