Izifundo eziphambili:
●Uvavanyo lweMpembelelo yeNkcazelo yeSiguquli:Uvavanyo lwe-impulse ye-transformer ihlola amandla ayo okumelana neempembelelo eziphezulu ze-voltage, iqinisekisa ukuba ukugquma kwayo kunokusingatha i-spikes ngokukhawuleza kwi-voltage.
● Uvavanyo lweMpembelelo yoMbane:Olu vavanyo lusebenzisa amandla ombane endalo afana nombane ukuvavanya ukugquma kwesiguquli, ukuchonga ubuthathaka obunokubangela ukusilela.
●Ukutshintsha uvavanyo lwe-Impulse:Olu vavanyo lulinganisa i-voltage spikes ukusuka kwimisebenzi yokutshintsha kwinethiwekhi, enokuthi igxininise ukufakwa kwe-transformer.
●I-Impulse Generator:I-generator ye-impulse, esekelwe kwisekethe ye-Marx, yenza iimpembelelo eziphezulu ze-voltage ngokutshaja ii-capacitors ngokuhambelana kunye nokuzikhupha kuthotho.
●Uvavanyo lokuSebenza:Inkqubo yovavanyo ibandakanya ukusebenzisa iimpembelelo zombane eziqhelekileyo kunye nokurekhoda umbane kunye neefom zangoku zamaza ukuchonga nakuphi na ukusilela kokugquma.
Ukukhanyisa yinto eqhelekileyo kwiiintambo zothumelongenxa yobude bawo. Lo mbane ubetha emgceniumqhubiibangela amandla ombane. Isixhobo setheminali somgca wothumelo ezifanaisiguquli samandlaemva koko ufumana le mibane yempembelelo yombane. Kwakhona ngexesha lonke uhlobo lomsebenzi wokutshintsha kwi-intanethi kwinkqubo, kuya kubakho ukutshintshwa kweempembelelo zenzeke kwinethiwekhi. Ubungakanani beempembelelo zokutshintsha zinokuba malunga nama-3.5 amaxesha ombane wenkqubo.
I-Insulation ibalulekile kubaguquli, njengoko nabuphi na ubuthathaka bunokubangela ukusilela. Ukujonga ukusebenza kwayo, ii-transformers zifumana iimvavanyo ze-dielectric. Nangona kunjalo, amandla okumelana novavanyo akwanelanga ukubonisa amandla e-dielectric. Yiyo loo nto iimvavanyo zempembelelo, kubandakanya umbane kunye nokutshintsha iimvavanyo zempembelelo, zenziwa
Impulse yoMbane
Impembelelo yombane yinto ecocekileyo yendalo. Kunzima kakhulu ukuqikelela eyona milo yamaza yophazamiso lombane. Ukususela kwidatha eqokelelweyo malunga nombane wendalo, kunokugqitywa ukuba ukuphazamiseka kwenkqubo ngenxa yombane wendalo, kunokubonakaliswa ngeemilo ezintathu ezisisiseko zamaza.
●Amaza ngokupheleleyo
● Amaza anqunyulwe kunye
●Phambi kwamaza
Nangona olona phazamiseko lwempembelelo yombane lusenokungabi nazo ezi milo zithathu ncam kodwa ngokuchaza la maza umntu unokuseka ubuncinci bamandla e-dielectric ye-transformer.
Ukuba uphazamiso lombane luhamba ngomgca wothumelo phambi kokufikelela kwiisitshintshi, ukumila kwayo kwamaza kusenokuba iliza elipheleleyo. Ukuba udanyazo lwenzeka kuyo nayiphi naisigqubutheloemva kwencopho yamaza, inokuba ngamaza anqunyulwayo.
Ukuba umbane ubetha ngokuthe ngqo kwiitheminali ze-transformer, i-impulseI-Voltageinyuka ngokukhawuleza ide ikhululeke ngokudanyaza. Ngephanyazo lombane we-flash ngequbuliso uyawa kwaye usenokwenza umphambili wemilo yamaza.
Isiphumo sezi fom zamaza kwi-insulation ye-transformer inokwahluka omnye komnye. Asiyi apha kwingxoxo eneenkcukacha malunga nokuba loluphi uhlobo lwe-voltage waveforms ebangela ukuba loluphi uhlobo lokusilela kwi-transformer. Kodwa nokuba yeyiphi na imilo yokuphazamiseka kombane wamaza ombane, zonke zinokubangela ukusilela kwe-insulation kwi-transformer. NgokoUkukhanyisa uvavanyo lwe-impulse ye-transformerlolona vavanyo lubalulekileyo lwe-transformer.
Ukutshintsha Impulse
Ngezifundo kunye noqwalaselo lutyhila ukuba ukutshintshwa kwamandla ombane okanye impembelelo yokutshintsha inokuba nexesha langaphambili lamakhulu amasekhondi amancinci kwaye lo mbane unokupheliswa ngamaxesha athile. I-IEC - i-600060 iye yamkelwa kuvavanyo lwabo lwe-impulse yokutshintsha, i-wave ende enexesha elingaphambili le-250 μs kunye nexesha kwi-half value 2500 μs kunye nokunyamezela.
Injongo yovavanyo lombane we-impulse kukuqinisekisa ukubaisitshintshiukugquma kombane ukumelana nombane ogqithisayo onokuthi wenzeke enkonzweni.
Uyilo lwe-impulse generator lusekwe kwisekethe kaMarx. Idayagram yesekethe esisiseko iboniswe kuMzobo ongentla. Impembeleloii-capacitorsI-Cs (i-12 capacitors ye-750 ηF) ihlawuliswa ngokuhambelana ngokutshajaresistorsI-Rc (28 kΩ) (amandla ombane aphezulu avumelekileyo wokutshaja angama-200 kV). Xa i-voltage yokutshaja ifikelele kwixabiso elifunekayo, ukuchithwa kwe-spark gap F1 iqaliswe yi-pulse yangaphandle yokukhupha. Xa i-F1 idiliza, amandla enqanaba elilandelayo (inqaku B kunye no-C) liyenyuka. Ngenxa yokuba uthotho resistors Rs lixabiso eliphantsi-ohmic xa kuthelekiswa nokukhupha resistors Rb (4,5 kΩ) kunye resistor ukutshaja Rc, kwaye ekubeni eliphantsi-ohmic ukukhupha resistor Ra yahlulwe kwisekethe yi-intaphanye-umsantsa ancedisayo Fal. , Umahluko onokuthi ubekho kwi-spark-gap F2 uyenyuka kakhulu kwaye ukwaphuka kwe-F2 kuqalisiwe.
Ngaloo ndlela i-spark-gaps ibangelwa ukuphuka ngokulandelelana. Ngenxa yoko, ii-capacitors zikhutshiwe kwi-series-connection. I-high-ohmic discharge resistors i-Rb inomlinganiselo wokutshintsha iimpembelelo kunye ne-ohmic resistors ephantsi ye-Ra yokukhupha umbane. I-resistors Ra idityaniswe ngokuhambelana ne-resistor Rb, xa i-spark-gaps encedisayo idiliza, kunye nokulibaziseka kwexesha lamakhulu ambalwa e-nano-imizuzwana.
Eli lungiselelo liqinisekisa ukuba ijenereyitha isebenza ngokufanelekileyo.
Ubume be-wave wave kunye nexabiso lencopho yombane wempembelelo ilinganiswa ngeNkqubo yokuHlalutya i-Impulse Analyzing (DIAS 733) eqhagamshelweisahluli sombane. I-voltage efunekayo ifunyenwe ngokukhetha inani elifanelekileyo lezigaba ezidityanisiweyo zechungechunge kunye nokulungelelanisa umbane wokutshaja. Ukuze kufumaneke ukukhutshwa okuyimfuneko kwamandla okudityaniswa kwe-parallel okanye i-series-parallel ye-generator ingasetyenziswa. Kule meko ezinye ze-capacitors zixhunyiwe ngokufanayo ngexesha lokukhutshwa.
Ubume bempembelelo efunekayo bufunyenwe ngokukhethwa okufanelekileyo koluhlu kunye nokukhutshwa kwe-resistors ye-generator.
Ixesha elingaphambili lingabalwa malunga nenxaki:
Nge-R1 >> i-R2 kunye ne-Cg >> C (15.1)
Tt = .RC123
kunye nesiqingatha sexesha ukuya kwisiqingatha sexabiso ukusuka kwinxaki
T ≈ 0,7.RC
Ngokwenza umsebenzi, isiphaluka sovavanyo silinganiswe ngokwamava.
Ukusebenza kovavanyo lwe-Impulse
Uvavanyo lwenziwa ngeempembelelo zombane eziqhelekileyo ze-polarity embi. Ixesha langaphambili (T1) kunye nexesha ukuya kwisiqingatha-ixabiso (T2) lichazwe ngokuhambelana nomgangatho.
Impembelelo yombane esemgangathweni
Ixesha langaphambili T1 = 1,2 μs ± 30%
Ixesha ukuya kwisiqingatha-ixabiso T2 = 50 μs ± 20%
Enyanisweni, i-impulse shape ingaphambuka kwi-impulse standard xa uvavanya i-low-voltage windings yamandla aphezulu aphezulu kunye ne-windings ye-input input capacitance. Uvavanyo lwe-impulse lwenziwa ngee-voltages ezingalunganga ze-polarity ukuphepha i-flash overs ephosakeleyo kwi-insulation yangaphandle kunye nesekethe yovavanyo. Uhlengahlengiso lwamaza luyimfuneko kwizinto ezininzi zovavanyo. Amava afunyenwe kwiziphumo zovavanyo kwiiyunithi ezifanayo okanye ekugqibeleni ukubalwa kwangaphambili kunokunika isikhokelo sokukhetha amacandelo esekethe yokubunjwa kwamaza.
Ulandelelwano lovavanyo lubandakanya i-reference impulse (RW) kwi-75% ye-amplitude epheleleyo elandelwa yinani elichaziweyo lezicelo zombane kwi-amplitude epheleleyo (FW) (ngokwe-IEC 60076-3 ezintathu ezipheleleyo). Izixhobo zombane kunyeyangokuukurekhodwa komqondiso kubandakanya irekhoda yexeshana yedijithali, imonitha, ikhompyutha, iploti kunye nomshicileli. Ukurekhoda kumanqanaba amabini kunokuthelekiswa ngokuthe ngqo kwisalathisi sokungaphumeleli. Ukulawula ii-transformer isigaba esinye sivavanywa kunye neseti yokutshintsha impompo ekulayishweni kwireyithingiI-Voltagekunye nezinye izigaba ezibini zivavanywa kwindawo nganye egqithisileyo.
Uqhagamshelo lovavanyo lwe-Impulse
Zonke iimvavanyo ze-dielectric zijonga inqanaba le-insulation yomsebenzi. I-Impul generator isetyenziselwa ukuvelisa okuchaziweyoI-Voltagei-impulse wave ye-1.2/50 micro seconds seconds wave. Impembelelo enye yokunciphaI-Voltagephakathi kwe-50 ukuya kwi-75% yombane ogcweleyo wokuvavanya kunye neempembelelo ezintathu ezilandelayo kwi-voltage epheleleyo.
Yei-transformer yesigaba sesithathu, impembelelo iqhutywa kuzo zontathu izigaba ngokulandelelana.
Umbane usetyenziswa kwitheminali nganye ngokulandelelana, ugcina ezinye iitheminali zinomhlaba.
Iimilo zamaza angoku kunye ne-voltage zirekhodwa kwi-oscilloscope kwaye nakuphi na ukugqwethwa kwimilo yamaza yinkqubo yokusilela.
Ixesha lokuposa: Dec-16-2024